CN206695694U - A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure - Google Patents
A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure Download PDFInfo
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- CN206695694U CN206695694U CN201720145857.1U CN201720145857U CN206695694U CN 206695694 U CN206695694 U CN 206695694U CN 201720145857 U CN201720145857 U CN 201720145857U CN 206695694 U CN206695694 U CN 206695694U
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Abstract
It the utility model is related to a kind of combined firework with transmitting hole and multiple tracks back-fire relief structure, including body, some tubular housings have been evenly arranged on the body, tubular housing upper port opens, lower port is closed, fireworks inner tank built in tubular housing and propellant, the bottom of each tubular housing is provided with an annular groove and a transmitting hole, the bottom surface of the body is provided with several back-fire relief boss, the back-fire relief boss is provided with the counterbore of depression, vent is provided with the counterbore, the one end open of the vent is in the bottom surface in transmitting hole, another end opening of the vent is located in the counterbore.The utility model solves the problems, such as that fireworks inner tank direction in emission process is unstable, active force is not concentrated, and the utility model also has the multiple tracks back-fire relief structure of prominent bottom surface, can prevent string fire in transmitting.
Description
Technical field
It the utility model is related to fireworks technical field, and in particular to a kind of combination with transmitting hole and multiple tracks back-fire relief structure
Fireworks.
Background technology
With the development of fireworks technology, slurry is passed through by compression molding, one piece using hydraulic machinery, mould in recent years
Property shaping production combined firework by industry extensive use, the shape of the combined firework after shaping is similar with conventional combination fireworks,
Its profile is generally prism, cylinder etc..It is parallel on the body of combined firework to be evenly distributed with some tubular housings, tubular cavity
Structurally and functionally similar with the monotubular of conventional combination fireworks, the tubular housing upper port opening of body, lower port closing, tubular housing
Built-in fireworks inner tank and propellant.But its fiery pattern of biography is different from the fiery even guiding structure of the sidepiece biography of conventional combination fireworks, uses
Bottom is ignited connecting line construction.The blind end of tubular housing opens up the vent through body bottom surface, and bottom surface is provided with connection vent
The lead of bottom surface opening, lead are connected with each vent, are ignited the propellant built in above described tubular cavity by vent.Adopt
Slurry be can be found in into Chinese patent literature, Authorization Notice No. CN by the technique of compression molding with hydraulic machinery, mould
101377395B, authorized announcement date on April 11st, 2012, entitled " firework outer barrel, fire works display projectile shell and its system of compression molding
Make ".
But we are in practice, it has been found that the combined firework of this compression molding still has following shortcoming：（1）Tubulose
Propellant in cavity is not concentrated, and gunpowder is more scattered, in the bottom skewness of tubular housing, when propellant is lighted
It is big to the active area of bottom, push up that the active force of fireworks inner tank is smaller, influence the effect inside fireworks inner tank and inner cylinder
The firing altitude of part；（2）Fireworks inner tank position inaccurate built in tubular housing, it is not easy to overlapped with the axis of tubular housing,
Often there are left-right deviation some drawbacks, because fireworks inner tank bottom does not limit positioning, often occur rail in emission process
Trace displacement, firework display effect is influenceed, or even influence firework display safety；（3）The combined firework of existing compression molding, in tubulose
The blind end of cavity opens up the flash hole through body bottom surface, and the bottom surface opening of flash hole is located in cloth line groove, in the cloth
In line groove, it is provided between the opening of flash hole bottom surface and blocks groove, the cloth line groove glue sealing, to prevent string fire
Phenomenon.Such as Authorization Notice No. CN102914223B, authorized announcement date on July 31st, 2013, a kind of entitled " group of compression molding
Close fireworks ", groove and glue sealing are blocked in the exactly this use of use prevents the structure of string fire.But in actual application
In, it has been found that groove and glue sealing are blocked in this use prevents that the structure of string fire is not reliable and stable, because glue is filled
Block after groove and block the combination of groove and unstable, in process of production, in transportation, during setting off, warp
Often due to carrying, mobile or vibrations there is the situation that glue comes off, ftracture, especially in emission process of lighting a fire, lead with
Under high temperature and the double action of gas shock caused by propellant burning, there is softening, cracking in glue, and with blocking groove
Depart from, make to block groove and do not have the effect for blocking string fire, cause the gunpowder in each tubular housing and effect part be not according to
Design sets off program and transmitting is sequentially lighted by fuse, the situation for two or more tubular cavities occur almost while launching, completely
Destroy firework display effect.
Utility model content
The purpose of this utility model is for overcome the deficiencies in the prior art, there is provided a kind of new combined firework.
The utility model uses following technical scheme：
A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure, including body, the body are suppressed using mould
It is molded, some tubular housings has been evenly arranged on the body, tubular housing upper port opens, lower port closing, tubular housing
Built-in fireworks inner tank and propellant, it is characterised in that the bottom of each tubular housing is provided with a raising launching effect
Transmitting hole, it is described transmitting hole in be placed with propellant.
Further, the bottom of each tubular housing is additionally provided with an annular groove for being easy to place fireworks inner tank, institute
The bottom margin for stating fireworks inner tank is located in annular groove, and the annular groove is looped around the surrounding in transmitting hole.
Further, the transmitting hole is conical bores, and the bottom surface of the conical bores is provided with vent, the ring
The cross sectional shape of shape groove is U-shaped.
Further, the bottom surface of the body is provided with several back-fire relief boss, each back-fire relief lug boss position respectively with body
Interior each tubular housing is corresponding, and the back-fire relief boss is provided with the counterbore of depression, and vent is provided with the counterbore, described to draw
In the bottom surface in transmitting hole, another end opening of the vent is located in the counterbore one end open of fire hole.
Preferably, the back-fire relief boss is round boss, and the center of the round boss is provided with a counterbore, described heavy
The vent for being used for installing lead is provided with hole.
Preferably, the back-fire relief boss is square boss, and the square boss is provided with the counterbore of two depressions, is respectively
First counterbore and the second counterbore, first counterbore is interior to be provided with inlet wire vent, and outlet vent is provided with second counterbore.
Further, the square boss is by the first back-fire relief wall, the second back-fire relief wall, the 3rd back-fire relief wall, left connection wall, right company
Wall composition is connect, the first back-fire relief wall is located at the left side of the first counterbore, and the second back-fire relief wall is located at the right side of the second counterbore, institute
The 3rd back-fire relief wall is stated between the first counterbore and the second counterbore, the both ends of the first back-fire relief wall, the second back-fire relief wall both ends,
The both ends of 3rd back-fire relief wall are connected with left connection wall, right connection wall respectively.
Further, the first back-fire relief wall of the square boss, be respectively equipped with the top of the second back-fire relief wall the first crossed beam trunking,
Second crossed beam trunking.
Further, connected between the square boss and adjacent another square boss by twice fire resisting wall, described two
A lead channels are provided between road fire resisting wall, the lead channels connect with the first crossed beam trunking, the second crossed beam trunking respectively.
Further, the bottom surface of the bottom surface of the lead channels and first crossed beam trunking, the bottom surface of the second crossed beam trunking are mutual
Flush, the lead channels are connected as a single entity with the first crossed beam trunking, the second crossed beam trunking.
The utility model has the beneficial effect that：
It is provided with annular groove in tubular housing of the present utility model, the cross sectional shape of the annular groove is rectangle or U-shaped, annulus
The width at shape edge is equal to or slightly less than the well width of annular groove, the lower edge of fireworks inner tank is inserted into the groove of annular groove
In, row constraint limitation is entered to the position of fireworks inner tank, makes the central axis of fireworks inner tank with the central axis of annular groove be coaxial
Structure, ensure that left and right deflection is not occurring in tubular housing for fireworks inner tank, make fireworks inner tank in bottom emission gunpowder point
It can vertically upward launch during combustion, overcome the shortcomings that fireworks inner tank bottom of existing combined firework does not limit positioning, prevent cigarette
Left and right deflection occurs for flower inner cylinder, prevents fireworks inner tank and the effect part of inside from occurring course deviation in emission process, eliminates
The uncertain factor of firework display effect and firework display safety is influenceed, improves firework display effect and firework display security
Energy.
Bottom surface in tubular housing of the present utility model is additionally provided with the transmitting hole of sunk structure, when lead is lighted in transmitting hole
Propellant when, due to transmitting hole internal diameter be less than tubular housing internal diameter, transmitting hole in propellant more concentrate, send out
Penetrate that the high-temperature gas that is drastically expanded during powder burning is smaller to the active area in transmitting hole, active force is more concentrated, unit area
On transmitting pressure it is bigger, in particular by conical bores transmitting cheat structure when, firing altitude when fireworks inner tank is seted off
Higher, faster, firework display effect is more preferable for emission rate, simultaneously because annular groove effectively makes cigarette to the effect of contraction of fireworks inner tank
Flower effect part transmitting is run along launching track.
The utility model in a preferred embodiment, employs the first back-fire relief wall, the second back-fire relief wall, the 3rd back-fire relief wall, a left side
The square boss that connection wall, right connection wall are formed, and the multiple back-fire relief knot for the lead contiguous block being connected with adjacent prismatic boss
Structure, the high-temperature combustion gas discharged when being burnt to lead and during flare enter row constraint, the first back-fire relief wall, the second back-fire relief wall,
3rd back-fire relief wall, left connection wall, right connection wall are the obvious solid type back-fire relief structures of prominent body bottom surface, by the first counterbore and
Entering lead and go out lead and completely separate in two counterbores, what its back-fire relief effect was much better than existing depressed blocks groove structure,
It is existing enter lead and going out between lead separated using blocking groove, the high temperature pressure and high-temperature gas when entering lead burning are still
Ignited out lead possibly through groove is blocked with solidifying the gap of glue, form transmitting string fire, especially solidify glue in height
Temperature, gases at high pressure double actions under, softening and shedding easily occurs, cause into lead burning when also unignited propellant just
Directly ignite lead, string fire phenomenon occurred, the gunpowder and fireworks inner tank in each tubular housing are seted off not in accordance with design
Program lights transmitting successively, but the situation that two or more tubular cavities are almost launched simultaneously occurs, destroys set off effect completely
Fruit.The first back-fire relief wall of the present embodiment, the second back-fire relief wall, the 3rd back-fire relief wall, left connection wall, right connection wall are and body bottom surface one
Body is compressing, and its height protrudes body bottom surface 2-5mm, the phenomenon that hot mastication comes off will not occur, also in the absence of back-fire relief
Wall and the gap of body bottom surface, the string fire defect of existing combined firework is overcome completely.
Brief description of the drawings
Fig. 1 is the outward appearance overall structure diagram of embodiment 1；
Fig. 2 is the cross-sectional view of embodiment 1；
Fig. 3 is the outward appearance overall structure diagram of embodiment 2；
Fig. 4 is the cross-sectional view of embodiment 2；
Fig. 5 is the body bottom portion 3-D solid structure schematic diagram of embodiment 3；
Fig. 6 is the planar structure schematic diagram of the body bottom portion of embodiment 3；
Fig. 7 is another 3-D solid structure schematic diagram of the body bottom portion of embodiment 3；
Fig. 8 is the body bottom portion 3-D solid structure schematic diagram of embodiment 4（Without the state of lead and moistureproof glue）；
Fig. 9 is the planar structure schematic diagram of the body bottom portion of embodiment 4（Without the state of lead and moistureproof glue）.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figure 1 and Figure 2, this is that one kind 25 sends out combined firework, is made using overall time die press technology for forming.Institute
The combined firework of compression molding is stated, is included in parallel equally distributed 25 tubular housings 2, the upper end of tubular housing 2 on body 1
Mouth is open, lower port closing, fireworks inner tank and propellant built in tubular housing 2, the bottom of tubular housing 2（That is tubular housing 2
Blind end）Transmitting hole 6 provided with an annular groove 7 for being easy to place fireworks inner tank and a raising launching effect, annular groove 7
The surrounding in transmitting hole 6 is looped around, propellant is filled with transmitting hole 6.The annular groove 7 and transmitting hole 6 also use mould pressure
The technique that type is made makes, and is suppressed together with the bottom of tubular housing 2.The frame 3 for being surrounded by projection of the bottom surface of body 1,
Frame 3 is provided with multiple ventilation and pressure release grooves 4.The side of body 1 is provided with lateral grooves 5, and the bottom of body 1 is fixed with moistureproof glue and led
Live wire, the blasting fuse both ends lead to the top of body 1 by the lateral grooves 5 of body 1.
Transmitting hole 6 can use the cavity body structure of circular cylindrical cavity, conical bores or other depressions, be filled out in transmitting hole 6
Filled with propellant, the bottom surface in transmitting hole 6 is provided with the vent through the bottom surface of body 1.The vent can use a hair
The structure that hole 6 sets a vent is penetrated, the lead for being provided with and being connected with the bottom blasting fuse of body 1 is inserted in the vent.
The vent can also use a transmitting to cheat 6 structures for setting two vents, and two vents are respectively that inlet wire is ignited
Hole 8 and outlet vent 9, insertion is provided with into lead and goes out lead respectively in the inlet wire vent 8 and outlet vent 9,
Go out lead with entering lead string in the transmitting hole 6 of another adjacent tubular housing 2 in the transmitting hole 6 of one tubular housing 2
Connection.
In this example, transmitting hole 6 preferably uses conical bores structure, the bottom position drill bit of the conical bores
Two vents are drilled with, one is inlet wire vent 8, and one is outlet vent 9.It surround and is provided with the surrounding of conical bores
Annular groove 7, the central axis of the annular groove 7 and the central axis weight of the central axis of conical bores and tubular housing 2
Close, be coaxial configuration.The lower edge of fireworks inner tank is arranged in annular groove 7, the shape size of annular groove 7 and fireworks inner tank
The shape size of lower edge matches.Annular groove 7 can be various shapes, in this example, due to the lower edge of fireworks inner tank
Edge typically uses annular edge, so annular groove 7 is preferably cut using the circular ring-shaped groove 7 to match therewith, the annular groove 7
Face is shaped as rectangle or U-shaped, and the width of annular edge is equal to or slightly less than the well width of annular groove 7, made under fireworks inner tank
Portion edge is inserted into the groove of annular groove 7, and row constraint limitation is entered to the position of fireworks inner tank, make the central axis of fireworks inner tank with
The central axis of annular groove 7 is coaxial configuration, ensures that left and right deflection is not occurring in tubular housing 2 for fireworks inner tank, makes
Fireworks inner tank can be launched vertically upward in bottom emission propellant ignition, and the fireworks inner tank bottom for overcoming existing combined firework does not have
The shortcomings that restricted positioning, prevent fireworks inner tank from left and right deflection occurs, prevent fireworks inner tank and the effect part of inside from launching
Occur course deviation in journey, eliminate the uncertain factor for influenceing firework display effect and firework display safety, improve fireworks
Firework display effect and firework display security performance.
The present embodiment additionally uses the new structure in transmitting hole 6 simultaneously, when lead lights the propellant in transmitting hole 6
When, because the internal diameter in transmitting hole 6 is less than the internal diameter of tubular housing 2, the propellant that transmitting is cheated in 6 is more concentrated, propellant
The high-temperature gas drastically expanded during burning to transmitting hole 6 active area is smaller, active force is more concentrated, the hair in unit area
Penetrate that pressure is bigger, when cheating 6 structure in particular by the transmittings of conical bores, firing altitude when fireworks inner tank is seted off is higher,
Faster, firework display effect is more preferable for emission rate, simultaneously because annular groove 7 effectively imitates fireworks the effect of contraction of fireworks inner tank
The transmitting of fruit part is run along launching track.
Embodiment 2
As shown in Figure 3, Figure 4, this is that one kind 100 sends out combined firework, is made using overall time die press technology for forming.Institute
State the combined firework of compression molding, be included in parallel equally distributed 100 tubular housings 2 on body 1, tubular housing 2 it is upper
Open-ended, lower port closing, fireworks inner tank and propellant built in tubular housing 2, the bottom of tubular housing 2（That is tubular cavity
The blind end of body 2）Transmitting hole 6 provided with a raising launching effect, the transmitting hole 6 is interior to be filled with propellant.The ring
Shape groove 7 and transmitting hole 6 are also made using the compressing technique of mould, are suppressed together with the bottom of tubular housing 2.
Transmitting hole 6 can use the cavity body structure of circular cylindrical cavity, conical bores or other depressions, be filled out in transmitting hole 6
Filled with propellant, the bottom surface in transmitting hole 6 is provided with the vent through the bottom surface of body 1.The vent can use a hair
The structure that hole 6 sets a vent is penetrated, the lead for being provided with and being connected with the bottom blasting fuse of body 1 is inserted in the vent.
The vent can also use a transmitting to cheat 6 structures for setting two vents, and two vents are respectively
Inlet wire vent 8 and outlet vent 9, in the inlet wire vent 8 and outlet vent 9 respectively insertion be provided with into lead and
Go out lead, entering in the transmitting hole 6 for going out lead and another adjacent tubular housing 2 in 6 is cheated in the transmitting of a tubular housing 2
Lead is connected.
Embodiment 3
As shown in Fig. 5, Fig. 6, Fig. 7, this is another specific implementation structure of the present utility model, and using one piece
Property die press technology for forming make 25 hair combined fireworks, be included in parallel equally distributed 25 tubular housings 2 on body 1, manage
The upper port of shape cavity 2 opens, lower port closing, fireworks inner tank and propellant built in tubular housing 2, the bottom of tubular housing 2
Portion is provided with transmitting hole 6, and annular groove 7 can be set around the transmitting hole 6, propellant is filled with the transmitting hole 6.Institute
State annular groove 7 and transmitting hole 6 is also made using the compressing technique of mould, one is overally compressed to tubular housing 2.Need
Illustrate, in manufacturing process, the embodiment for being not provided with annular groove 7 can also be used, this is also included within the utility model
Within the scope of.
Its difference is, in this example, the bottom surface of the body 1 is provided with several back-fire relief boss, each back-fire relief boss
Position is corresponding with each position of tubular housing 2 in body 1 respectively.The back-fire relief boss is round boss 10, and the circle is convex
The center line of platform 10 overlaps with the center line of tubular housing 2, and the center of the round boss 10 is provided with one or two counterbore
11, the counterbore 11 of the round boss 10 and center is compressing together with body 1 using mould, its material used
It is consistent with body 1, round boss 10, counterbore 11 and body 1 is become one structure.It is provided with the counterbore 11 and draws for installation
The vent 12 of line.The vent 12 can use boring bar tool to punch, and mould can also be used to suppress, the number of vent 12
Amount can be one, or two.The one end open of vent 12 is in the bottom surface in transmitting hole 6, the vent 12
Another end opening be located in the counterbore 11.Installation lead in vent 12, the lead upper end sink through back-fire relief boss
Hole 11 is connected with the propellant in the transmitting hole 6 of the bottom of tubular housing 2, the lead lower end and the bottom surface of combined firework body 1
Blasting fuse be connected, the blasting fuse can be drawn or by the way of disk draws using inserting, and be fixed on the bottom of body 1 with moistureproof glue, be sunk
Lead in hole 11 in vent 12 can also use the gluing fixation of moistureproof glue.
It should be noted that as a kind of deformation of the present utility model, as shown in fig. 7, can be by the profile of round boss 10
It is changed to square, its center sets a counterbore 11, and a vent 12 is drilled with the counterbore 11.In use, only need to be complete by one
Whole blasting fuse is fixed on moistureproof glue in the wiring groove 13 of the bottom of body 1, you can meets that passing fire requires that each flash hole need not
Lead is inserted separately into, blasting fuse burning gases spark caused by burning in wiring groove 13 enters tubular housing 2 from flash hole
It is interior, light propellant and fireworks inner tank.
Embodiment 4
As shown in Figure 8, Figure 9, this is another specific implementation structure of the present utility model, and uses overall time mould
The 25 hair combined fireworks that molded technique makes, are included in parallel equally distributed 25 tubular housings 2, tubular cavity on body 1
The upper port of body 2 is opened, and lower port closing, fireworks inner tank and propellant built in tubular housing 2, the bottom of tubular housing 2 is set
There is the transmitting hole 6 of an annular groove 7 for being easy to place fireworks inner tank and a raising launching effect, annular groove 7 is looped around transmitting
The surrounding in hole 6, transmitting hole 6 is interior to be filled with propellant.The annular groove 7 and transmitting hole 6 are also using the compressing work of mould
Skill is made, and one is overally compressed to tubular housing 2.It should be noted that in manufacturing process, it can also use and be not provided with ring
The embodiment of shape groove 7, this is also included within the scope of the utility model.
The bottom surface of the body 1 is provided with several back-fire relief boss, and each back-fire relief lug boss position in body 1 respectively with each managing
Shape cavity 2 is corresponding.The back-fire relief boss is square boss, and the square boss is provided with the counterbore of two depressions, is respectively
First counterbore 21 and the second counterbore 22, first counterbore 21 is interior to be provided with inlet wire vent 8, is set in second counterbore 22
There is outlet vent 9.
Its difference is, in this example, the square boss is hindered by the first back-fire relief wall 16, the second back-fire relief wall the 17, the 3rd
Fiery wall 18, left connection wall 14, right connection wall 15 are formed, and the first back-fire relief wall 16 is located at the left side of the first counterbore 21, and described
Two back-fire relief walls 17 are located at the right side of the second counterbore 22, the 3rd back-fire relief wall 18 be located at the first counterbore 21 and the second counterbore 22 it
Between, the both ends of the first back-fire relief wall 16, the both ends of the second back-fire relief wall 17, the 3rd back-fire relief wall 18 both ends respectively with left connection wall
14th, right connection wall 15 is connected.First back-fire relief wall 16, the second back-fire relief wall 17, the 3rd back-fire relief wall 18, left connection wall 14, right connection wall
15th, the first counterbore 21, the second counterbore 22 are compressing together with the bottom of body 1, and its material used can use and body 1
Consistent material, the material with fire-proof function can also be used to suppress, the first back-fire relief wall 16, the second back-fire relief wall 17, the
Three back-fire relief walls 18, left connection wall 14, the height of right connection wall 15 protrude the bottom surface 2-5mm of body 1, its cross sectional shape can be n-type,
Or triangle or rectangle or other shapes.
First back-fire relief wall 16 of square boss, the top of the second back-fire relief wall 17 are respectively equipped with the first crossed beam trunking 19, the second mistake
Wire casing 20, first crossed beam trunking 19, the second crossed beam trunking 20 are also to be made by the way of compressing, and the width of crossed beam trunking omits
More than the diameter of lead.Connected between the square boss and adjacent another square boss by twice fire resisting wall 23, described two
Be provided with a lead channels 24 between road fire resisting wall 23, the lead channels 24 respectively with first crossed beam trunking 19, described
Two crossed beam trunkings 20 connect.The bottom surface of the lead channels 24 and bottom surface, the bottom of the second crossed beam trunking 20 of first crossed beam trunking 19
The mutual flush in face, lead channels 24 are made to be connected as a single entity with the first crossed beam trunking 19, the second crossed beam trunking 20.
The present embodiment is using the first back-fire relief wall 16, the second back-fire relief wall 17, the 3rd back-fire relief wall 18, left connection wall 14, right connection
The square boss that wall 15 is formed, and the multiple back-fire relief structure for the twice fire resisting wall 23 being connected with adjacent prismatic boss, to lead
The high-temperature combustion gas discharged during burning and during flare enter row constraint, the first back-fire relief wall 16, the resistance of the second back-fire relief wall the 17, the 3rd
Fiery wall 18, left connection wall 14, right connection wall 15 are the obvious solid type back-fire relief structures of the prominent bottom surface of body 1, by the first counterbore 21
With entering lead and go out lead and completely separate in the second counterbore 22, what its back-fire relief effect was much better than existing depressed blocks groove
Structure, entering lead and going out between lead for existing combined firework are separated using blocking groove, enter high-temperature high-pressure during lead burning
Power and high-temperature gas still are possible to ignite out lead with solidifying the gap of glue by blocking groove, form transmitting string fire, especially
It is solidify glue high temperature, gases at high pressure double action under, softening and shedding easily occurs, cause into lead burning when also
Unignited propellant just directly has ignited lead, string fire phenomenon occurs, gunpowder and fireworks inner tank in each tubular housing 2
Program is seted off not in accordance with design and lights transmitting successively, but the situation that two or more tubular cavities are almost launched simultaneously occurs,
Firework display effect is destroyed completely.The first back-fire relief wall 16 of the present embodiment, the second back-fire relief wall 17, the 3rd back-fire relief wall 18, left connection wall
14th, right connection wall 15 is integrally compressing with the bottom surface of body 1 that its height protrudes the bottom surface 2-5mm of body 1, and height will not occur
The phenomenon of warm softening and shedding, also in the absence of the gap of back-fire relief wall and the bottom surface of body 1, the string fire of existing combined firework is overcome completely
Defect.
Described above is only preferred embodiment of the present utility model, and the scope of protection of the utility model is not limited merely to
Above-described embodiment.It should be pointed out that for those skilled in the art, before the utility model principle is not departed from
Some improvements and modifications put, also should be regarded as the scope of protection of the utility model.Each composition portion being not known in the present embodiment
Available prior art is divided to be realized.
Claims (10)
1. a kind of combined firework with transmitting hole and multiple tracks back-fire relief structure, including body, the body are pressed into using mould
Type, some tubular housings are evenly arranged on the body, tubular housing upper port opens, lower port closing, in tubular housing
Put fireworks inner tank and propellant, it is characterised in that：The bottom of each tubular housing is provided with one and improves launching effect
Transmitting hole, described launch in hole are placed with propellant.
A kind of 2. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 1, it is characterised in that：Institute
The bottom for stating each tubular housing is additionally provided with an annular groove for being easy to place fireworks inner tank, the bottom margin of the fireworks inner tank
In annular groove, the annular groove is looped around the surrounding in transmitting hole.
A kind of 3. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 2, it is characterised in that：Institute
It is conical bores to state transmitting hole, and the bottom surface of the conical bores is provided with vent, and the cross sectional shape of the annular groove is U
Type.
A kind of 4. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 1, it is characterised in that：Institute
The bottom surface for stating body is provided with several back-fire relief boss, and each back-fire relief lug boss position is relative with each tubular housing in body respectively
Should, the back-fire relief boss is provided with the counterbore of depression, is provided with vent in the counterbore, the one end open of the vent is located at
In the bottom surface for launching hole, another end opening of the vent is located in the counterbore.
A kind of 5. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 4, it is characterised in that：Institute
It is round boss to state back-fire relief boss, and the center of the round boss is provided with a counterbore, is provided with the counterbore and is used to install
The vent of lead.
A kind of 6. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 4, it is characterised in that：Institute
It is square boss to state back-fire relief boss, and the square boss is provided with the counterbore of two depressions, and respectively the first counterbore and second are sunk
Hole, first counterbore is interior to be provided with inlet wire vent, and outlet vent is provided with second counterbore.
A kind of 7. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 6, it is characterised in that：Institute
State square boss to be made up of the first back-fire relief wall, the second back-fire relief wall, the 3rd back-fire relief wall, left connection wall, right connection wall, first resistance
Fiery wall is located at the left side of the first counterbore, and the second back-fire relief wall is located at the right side of the second counterbore, and the 3rd back-fire relief wall is positioned at the
Between one counterbore and the second counterbore, the both ends of the first back-fire relief wall, the both ends of the second back-fire relief wall, the both ends point of the 3rd back-fire relief wall
It is not connected with left connection wall, right connection wall.
A kind of 8. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 7, it is characterised in that：Institute
State the first back-fire relief wall of square boss, be respectively equipped with the first crossed beam trunking, the second crossed beam trunking at the top of the second back-fire relief wall.
A kind of 9. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 8, it is characterised in that：Institute
State and connected between square boss and adjacent another square boss by twice fire resisting wall, one is provided between the twice fire resisting wall
Lead channels, the lead channels connect with the first crossed beam trunking, the second crossed beam trunking respectively.
A kind of 10. combined firework with transmitting hole and multiple tracks back-fire relief structure according to claim 9, it is characterised in that：
The bottom surface of the lead channels and the bottom surface of first crossed beam trunking, the mutual flush in the bottom surface of the second crossed beam trunking, the lead lead to
Road is connected as a single entity with the first crossed beam trunking, the second crossed beam trunking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145857.1U CN206695694U (en) | 2017-02-17 | 2017-02-17 | A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720145857.1U CN206695694U (en) | 2017-02-17 | 2017-02-17 | A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206695694U true CN206695694U (en) | 2017-12-01 |
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| CN201720145857.1U Withdrawn - After Issue CN206695694U (en) | 2017-02-17 | 2017-02-17 | A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871734A (en) * | 2017-02-17 | 2017-06-20 | 卢山河 | A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure |
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2017
- 2017-02-17 CN CN201720145857.1U patent/CN206695694U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871734A (en) * | 2017-02-17 | 2017-06-20 | 卢山河 | A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure |
| CN106871734B (en) * | 2017-02-17 | 2018-12-04 | 卢山河 | A kind of combined firework with transmitting hole and multiple tracks back-fire relief structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171201 Effective date of abandoning: 20181204 |
|
| AV01 | Patent right actively abandoned |