CN108837538B - Cold flame and fire spraying equipment - Google Patents

Abstract

The invention provides a cold flame and fire spraying device which comprises a centrifugal fan and a lighting unit for lighting cold flames and fire, wherein the centrifugal fan comprises a fan shell, a first impeller arranged in the fan shell, 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 outlet and a first air inlet are formed in the fan shell, the centrifugal fan further comprises a second air inlet which is arranged on the fan shell and communicated with the first air flow channel, the sectional area of the second air inlet is not smaller than that of the first air inlet, the first impeller rotates to drive air flow entering the fan shell from the second air inlet to move towards the air outlet, and an outlet of the lighting unit is connected with the second air inlet. The invention improves the efficiency of the fan in the accelerating device, reduces the pressure loss of the fan and the space occupied by the fan, thereby reducing the volume of the whole cold flame and fire spraying equipment. The invention can realize the effect of downward eruption of fireworks, and has simple structure and easy realization.

Description

Cold flame and fire spraying equipment

Technical Field

The invention belongs to the technical field of fireworks, and particularly relates to equipment for cold fireworks eruption.

Background

Fireworks are a traditional invention in China and are commonly used in stage performances, celebrations and meeting places. As fireworks are traditionally set off by gunpowder, stronger smoke and gases with pungent odor are generated during set off, the environment is easily polluted, and potential safety hazards also exist. In recent years, the nation has made new requirements for the environmental protection and safety performance of products. Therefore, the safety of the firework is urgently needed to be improved, and the firework spraying equipment without gunpowder replaces the traditional gunpowder spraying and is bound to go into the visual field of people.

For example, patent application 200620089199.0 discloses a device for swinging, rotating or wheeling stage cold fireworks during lighting. The cold firework inserted in the clamping cup is driven by a motor to swing, rotate or rotate in a mechanical action mode through an eccentric wheel, a connecting rod or a rotating beam, so that the common direct-injection firework is changed into a fan-shaped, conical and two-strand opposite-winding dynamic firework shape.

However, the above-mentioned device can not realize the eruption control of the cold fireworks, and the firing effect of the cold fireworks is reflected only by simulation, so the effect is not ideal, so people improve the device, for example, patent application 201620475120.1 discloses a cold fireworks eruption device, which comprises a storage mechanism, a feeding mechanism arranged at the output end of the storage mechanism, and an eruption mechanism arranged at the output end of the feeding mechanism and used for erupting the ignited metal particles outwards; the output end of the feeding mechanism is provided with a heating mechanism used for heating metal particles in the feeding mechanism to ignite the metal particles, the part of the feeding mechanism provided with the heating mechanism forms a heating section of the feeding mechanism, a heat insulation layer used for heat preservation and heat insulation is wrapped outside the heating mechanism, the inner cavity of the feeding mechanism is a negative pressure cavity, a material pushing screw rod used for feeding materials in a spiral propelling mode is arranged in the negative pressure cavity of the feeding mechanism, and an air inlet which penetrates through the heat insulation layer, the spraying mechanism and the heating mechanism simultaneously and is used for introducing external air into the inner cavity of the feeding mechanism to balance negative pressure of the negative pressure cavity and promote combustion of the metal particles is formed.

Still for example, patent application 201610384034.4 discloses a cold flame fire spraying device, which comprises a discharging mechanism for storing metal powder and discharging the metal powder in a rotary pushing manner, a feeding pipe connected to an output end of the discharging mechanism for conveying the metal powder and exciting and igniting the metal powder in the conveying process, an outlet pipe connected to an output end of the feeding pipe for spraying the ignited metal powder, and an air supply mechanism for supplying air flow into the outlet pipe to spray the ignited metal powder outwards, wherein the air supply mechanism is connected with an air supply branch which leads to the feeding pipe and supplies air from a metal powder input end of the feeding pipe to a metal powder output end of the feeding pipe to drive the metal powder in the feeding pipe to flow towards the outlet pipe; and an ignition heating device for exciting and igniting the metal powder in the inner cavity of the feeding pipe in a mode of heating the outer surface of the feeding pipe by flame is arranged outside the feeding pipe.

Both of the above two patent applications can realize the spraying of the cold fireworks, however, the realization methods usually have larger volume and are inconvenient for transportation and installation; secondly, the effect of downward eruption cannot be realized because the eruption can only be upwards erupted, and the using function is too single, so that the requirements of various aspects of performance places and stages cannot be met.

In addition, in the conventional cold firework discharging device, for example, in the form shown in fig. 1, after the cold firework raw material is ignited by the ignition unit, the cold firework fuel is discharged upward by the wind force discharged from the outlet 3 of the centrifugal fan 10. The centrifugal fan 10 is generally of the form of figure 2. When the impeller rotates, a centrifugal fan of the accelerating device for the ignited cold flame raw material needs to suck air through the air inlet 1, and the air is discharged along the air outlet 3 under the centrifugal action of the rotation of the impeller. However, when the centrifugal fan is applied to an accelerating device in a cold flame and fire spraying device, the following problems exist:

(1) because only one air inlet is arranged, various energy losses exist in a gas passage in a fan shell of the centrifugal fan, so that pressure loss exists in gas released by the air outlet, and better cold flame raw material acceleration efficiency after ignition cannot be achieved;

(2) due to the structural characteristics of the centrifugal fan, the cold flame raw material to be accelerated after ignition must be arranged at the air outlet of the centrifugal fan to be accelerated, and the acceleration can be realized only by advancing a certain distance from the air outlet, so that the volume of the whole accelerating device is increased, and the miniaturization of the device is influenced.

Disclosure of Invention

The invention provides cold firework eruption equipment, aiming at the problems that the existing cold firework eruption equipment is large in size, cannot realize upward eruption, and a centrifugal fan of an accelerating device is large in pressure loss and large in occupied size.

In order to solve the technical problems, the invention adopts the technical scheme that: a cold flame and fire spraying device comprises a centrifugal fan and a lighting unit for lighting a cold flame and fire raw material, wherein the centrifugal fan comprises a fan shell, a first rotating shaft arranged on the fan shell, a first impeller arranged on the first rotating shaft and positioned in the fan shell, a first air flow channel is formed in the fan shell around the first impeller, an air outlet and a first air inlet positioned on one side of the first impeller are formed in the fan shell, the cold flame and fire spraying device also comprises a second air inlet arranged on the fan shell and communicated with the first air flow channel, the sectional area of the second air inlet is not smaller than that of the first air inlet, and the first impeller rotates to drive an air flow entering the fan shell from the second air inlet to move towards the air outlet; a second air flow channel is formed between the second air inlet and the air outlet; the outlet of the ignition unit is connected with the second air inlet.

In the invention, the ignition unit ignites the cold flame raw material, the ignited cold flame is conveyed to the second air inlet of the centrifugal fan and is discharged from the air outlet of the centrifugal fan for eruption, so that the effect of igniting the cold flame is achieved. The centrifugal fan accelerates the eruption downwards or in other directions, so that the effect of setting off the cold fireworks is achieved. In the invention, the ignited cold flame raw material enters the fan shell through the second air inlet and is discharged along the air outlet under the centrifugal action of the rotation of the impeller, the rotation of the impeller not only has a suction effect on the cold flame entering from the second air inlet, but also has a push-out effect on the cold flame discharged along the air outlet, and the rotation of the first impeller drives the air flow in the first air flow channel to move so as to drive the air flow entering the fan shell from the second air inlet to move towards the air outlet, so that the cold flame to be accelerated entering the fan shell from the second air inlet is driven to move towards the air outlet, thereby realizing better effects of blowing and accelerating the ignited cold flame raw material. Meanwhile, the ignited cold flame to be accelerated enters the fan shell and is exhausted from the fan shell after acceleration, so that the acceleration paths of the cold flame to be accelerated are all in the fan shell, and the cold flame exhausted from the air outlet is accelerated, so that the layout in the device is optimized, the space is saved, and the miniaturization of the device is facilitated.

Further, the first air flow channel and the second air flow channel have overlapping portions. Because the first air flow channel and the second air flow channel are provided with the overlapped parts, the air flow in the first air flow channel can drive the air flow in the second air flow channel to move, and therefore the air flow of the ignited cold flame raw material entering the fan shell from the second air inlet to be accelerated is driven to move towards the air outlet.

Further, the ratio of the cross-sectional areas of the first air inlet and the second air inlet ranges from 1:9 to 4: 6. According to the invention, by setting the range of the ratio of the sectional areas of the first air inlet and the second air inlet to be 1: 9-4: 6, the ratio of the volume of air sucked by the first air inlet to the volume of the cold flame raw material sucked by the second air inlet after ignition is better, so that a better acceleration effect is realized.

Furthermore, the included angle range between the axial direction of the air outlet and the axial direction of the second air inlet is [90 degrees ], 180 degrees ]. In the invention, the axial direction of the air outlet and the axial direction of the second air inlet can be mutually vertical or on the same straight line, and the included angle can also be an obtuse angle. When the included angle between the axial direction of the air outlet and the axial direction of the second air inlet is 180 degrees, namely the two are on the same straight line. The acceleration effect is better.

Further, the first impeller is arranged on the center line of the second airflow channellTo one side of (a). In the invention, the rotation of the impeller drives the accelerated ignited cold flame raw material to rotate. If the first impeller is too close to the axis of the second air inlet or the axis passes through the impeller, the ignited cold flame raw material entering from the second air inlet may not be accelerated well by the rotation of the impeller, or may be too close to the impeller to rotate in the fan housing, and is not easy to be discharged from the air outlet. By arranging the first impeller on the axis of the second air inletlThe ignited cold flame raw material entering from the second air inlet can keep a certain distance with the impeller, so that the cold flame raw material is convenient to accelerate and discharge.

Furthermore, the centrifugal fan further comprises a second rotating shaft arranged on the fan shell and a second impeller arranged on the second rotating shaft and located in the fan shell, a third airflow channel is formed in the fan shell around the second impeller, and the second impeller rotates to drive airflow entering the fan shell from the second air inlet to move towards the air outlet; the first air flow channel and the third air flow channel are combined on the second air flow channel.

Preferably, the centrifugal fan further comprises a first driving motor for driving the first rotating shaft and the second rotating shaft to rotate.

Preferably, the first impeller and the second impeller are respectively arranged on two sides of a center line of the second airflow channel; more preferably, the first impeller and the second impeller are symmetrically arranged on two sides of a center line of the second airflow channel.

In the invention, the first airflow channel and the third airflow channel are converged on the second airflow channel, and better acceleration effect of the material can be realized due to the superposition effect of the driving of the rotation of the first impeller and the rotation of the second impeller. Due to the driving of the rotation of the first impeller and the superposition effect of the rotation of the second impeller, the better acceleration effect of the ignited cold flame raw material can be realized. In the invention, the first impeller and the second impeller are symmetrically arranged on the axis of the second air inletlThe two sides of the gas burner enable the ignited cold flame raw material to be accelerated to have better acceleration effect.

Further, the cold flame eruption device further comprises a storage unit for storing the cold flame raw materials and a power unit for conveying the cold flame raw materials in the storage unit to an inlet of the ignition unit.

Preferably, the power unit comprises a second driving motor and a feeding mechanism connected with an output shaft of the second driving motor, wherein the feeding mechanism extends into the storage unit and is used for conveying the cold flame raw materials from the storage unit to an inlet of the ignition unit.

More preferably, the feeding mechanism is arranged at the bottom of the storage unit.

More preferably, the feeding mechanism is a screw.

The power unit transmits the cold flame raw material in the storage unit to the ignition unit. The feeding mechanism extends into the storage unit and conveys the cold flame raw materials from the storage unit to the inlet of the ignition unit. For example, the feed mechanism delivers the cold flame raw material over the inlet of the ignition unit, dropping into the ignition unit. The feeding mechanism is arranged at the bottom of the storage unit so as to basically push the cold flame raw materials out of the storage bin in sequence. The outer surface of the screw rod is provided with threads so that the screw rod can continuously transfer the cold flame raw material to the ignition unit while rotating.

Further, the ignition unit includes a combustion tube and a heating coil disposed around the combustion tube;

preferably, a funnel for receiving cold flame raw materials from the storage unit is arranged between the storage unit and the ignition unit, and the funnel is connected with the combustion pipe.

More preferably, the funnel is of unitary construction with the burner tube.

More preferably, the funnel and the combustion pipe are both disposed in a vertical direction or a horizontal direction.

The funnel is connected with the combustion tube to collect the pushed out cold flame raw material, so that the cold flame raw material can be effectively ignited. Funnel and combustion tube structure as an organic whole and vertical setting to in funnel and the combustion tube are dropped in proper order to the cold fireworks raw materials under its own effect of gravity, are convenient for ignite it.

The cold fireworks eruption equipment further comprises a box body and a hook arranged at the top of the box body, wherein the centrifugal fan, the ignition unit, the power unit and the storage unit are all arranged in the box body, a first opening is formed in the bottom of the box body, and the first opening and the air outlet are overlapped; preferably, the storage unit top is provided with the cold flame raw materials and puts in the mouth, the top of box is provided with the second trompil, cold flame raw materials puts in mouth, the mutual coincidence of second trompil.

Through setting up centrifugal fan, ignition unit, power pack, storage unit in the box, and hang the box through the couple, be convenient for realize the effect that cold flame fire erupted downwards. Through setting up first trompil and the mutual coincidence of air outlet, the cold flame fire that is convenient for through fan casing acceleration erupts outward to the box. Through setting up the mouth is put in to cold flame raw materials, and mouth, the mutual coincidence of second trompil are put in to cold flame raw materials, are convenient for put in the cold flame raw materials from the box top to the storage unit in the box.

Further, the cold fireworks eruption equipment still includes the support frame of fixed setting in the box, the support frame sets up in vertical direction or horizontal direction, first driving motor, second driving motor set up in one side of support frame, light unit, storage unit, fan casing set up in the opposite side of support frame.

Preferably, the storage unit, the ignition unit and the centrifugal fan are sequentially arranged from one side to the other side in the horizontal direction; more preferably, the axial direction of the air outlet and the axial direction of the second air inlet are both in the horizontal direction.

Preferably, the material storage unit, the ignition unit and the centrifugal fan are sequentially arranged from top to bottom in the vertical direction; more preferably, the axial direction of the air outlet and the axial direction of the second air inlet are both in the vertical direction.

In the invention, the support frame is arranged in the vertical direction or the horizontal direction. The first driving motor and the second driving motor are arranged on one side of the support frame, and the ignition unit, the storage unit and the fan shell are arranged on the other side of the support frame. Therefore, the balance of the weight of the whole device on two sides of the support frame can be ensured, and the safety of the device is ensured. First driving motor, second driving motor, light unit, storage unit, fan casing all fixed the setting on the support frame.

Because storage unit, ignition unit, centrifugal fan set gradually by one side to opposite side on the horizontal direction, the cold flame raw materials of the storage unit of being convenient for transmit through ignition unit, centrifugal fan in proper order, are convenient for realize the effect that the cold flame erupted. The axial direction of the air outlet and the axial direction of the second air inlet are both in the horizontal direction, so that the cold fireworks can be conveniently erupted in the horizontal direction.

Because storage unit, ignition unit, centrifugal fan set gradually from top to bottom in vertical direction for the cold flame raw materials that are located the storage unit of top enter into the ignition unit, in the fan casing of below gets into after the ignition of ignition unit, discharge downwards after accelerating, realize the effect that cold flame fire erupted downwards. The axial direction of the air outlet and the axial direction of the second air inlet are both in the vertical direction, so that the cold fireworks can be conveniently erupted in the vertical direction. The axial direction of the air outlet and the axial direction of the second air inlet are both in the vertical direction, so that the ignited cold flame raw materials can enter the second air inlet under the self gravity, and are accelerated and then sprayed downwards in the vertical direction in the fan shell. In an application scene that the ignited cold flame raw material needs to be discharged vertically downwards, a better acceleration effect can be realized.

The invention has the advantages and positive effects that: according to the invention, the ignited cold flame raw material enters the flow channel in the fan shell through the air inlet, the ignited cold flame raw material is accelerated through the rotation of the impeller in the fan shell and then is discharged through the air outlet, the rotation of the impeller has a suction effect on the ignited cold flame raw material entering the air inlet and has a pushing effect on the ignited cold flame raw material discharged from the air outlet, the efficiency of the centrifugal fan applied to the accelerating device is improved, the pressure loss of the centrifugal fan is reduced, the space occupied by the centrifugal fan is reduced, and the volume of the whole cold flame spraying equipment is reduced. The invention can realize the downward flaming effect of the fireworks by combining a plurality of simple storage units, ignition units, centrifugal fans and other components, has the characteristics of simple structure, easy realization, small volume and good controllability, is convenient to transport and install, is convenient to transport, install and use, does not occupy excessive space in the using process, is convenient to set, for example, can be easily hung above the stage to match with the performance to carry out fireworks spraying, and increases the performance effect of the stage; can also be hung at a proper place according to specific requirements.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a prior art cold firework eruption apparatus.

Fig. 2 is a schematic structural view of a centrifugal fan used in a conventional cold firework eruption apparatus.

Fig. 3 is a schematic longitudinal sectional view of a cold flame projecting apparatus according to an embodiment of the present invention.

Fig. 4 is a schematic longitudinal sectional view of the power unit and the magazine unit of the cold flame-throwing device of fig. 3.

Fig. 5 is a schematic structural view of an ignition unit of the cold flame fire spraying apparatus of fig. 3.

Fig. 6 is a schematic longitudinal sectional view of the structure shown in fig. 5.

Fig. 7 is a schematic view of a burner tube structure of an ignition unit of the cold flame spray apparatus of fig. 3.

Fig. 8 is a schematic longitudinal sectional view of the structure shown in fig. 7.

Fig. 9 is a schematic structural view of a centrifugal fan according to an embodiment of the present invention in a three-dimensional state.

Fig. 10 is a schematic structural view of another perspective state of the centrifugal fan of fig. 9.

Fig. 11 is an internal structural view of the centrifugal fan of fig. 9.

Fig. 12 is a longitudinal sectional view of fig. 9.

Fig. 13 is a schematic structural view of an ignition unit and a centrifugal fan according to an embodiment of the present invention.

Fig. 14 is a schematic view of a centrifugal fan with a first impeller and a second impeller according to another embodiment of the present invention.

Fig. 15 is a schematic view of a centrifugal fan with a first impeller and a second impeller according to yet another embodiment of the present invention.

Fig. 16 is a schematic perspective view of a cold flame and fire spraying apparatus with a case according to an embodiment of the present invention.

Fig. 17 is a cross-sectional view of the structure shown in fig. 16.

In the above drawings, 10, a centrifugal fan, 201, an inlet of an ignition unit, 202, an outlet of the ignition unit, 203, a combustion tube, 204, a heating coil, 205, a hopper, 30, a power unit, 301, a feeding mechanism, 40, a storage unit, 401, a raw material input port of a cold flame and fire, 402, a discharge port of the storage unit, 403, a top cover of the storage unit, 50, a box body, 501, a first opening, 502, a second opening, 503, a hook, 1, a first air inlet, 2, a second air inlet, 3, an air outlet, 4, a first driving motor, 41, a first rotating shaft, 43, an output shaft mounting port, 44, a first driving motor mounting surface, 51, a first air flow passage, 52, a second air flow passage, 53, a third air flow passage, 6, a second driving motor, 11, a first impeller, 12, a second impeller, 100, a top plate, 200, a bottom plate, 300, a side wall, land the axis of the second air inlet.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1 to 12 and 16 to 17, the present invention provides a cold flame spraying apparatus, which comprises a centrifugal fan 10 and an ignition unit for igniting a cold flame, a storage unit 40 for storing cold flame raw materials, and a power unit 30 for delivering the cold flame raw materials in the storage unit 40 to an inlet 201 of the ignition unit.

As shown in fig. 9-12, the centrifugal fan 10 includes a fan housing, a first rotating shaft 41 installed on the fan housing, a first impeller 11 installed on the first rotating shaft 41 and located in the fan housing, a first air flow channel 51 formed between the periphery of the first impeller 11 and the fan housing, an air outlet 3 and a first air inlet 1 located at one side of the first impeller 11 provided on the fan housing, and a second air inlet 2 provided on the fan housing and communicated with the first air flow channel 51, a cross-sectional area of the second air inlet 2 is not smaller than a cross-sectional area of the first air inlet 1, and the first impeller 11 rotates to drive an air flow entering the fan housing from the second air inlet 2 to move toward the air outlet 3; a second airflow channel 52 is formed between the second air inlet 2 and the second air outlet 3; the outlet 202 of the lighting unit is connected to the second intake vent 2.

The first air inlet 1 and the first rotating shaft 41 are arranged on opposite surfaces of the fan shell. Preferably, the first air inlet 1 is arranged on the top plate 100 of the fan housing, and the first rotating shaft 41 is arranged on the bottom plate 200 of the fan housing. Preferably, the second air inlet 2 is arranged on the side wall 300 of the fan housing and is communicated with the inside of the fan housing. Preferably, the first rotating shaft 41 of the first driving motor 4 is inserted into the blower housing from the base plate 200 of the blower housing. A first air flow passage 51 is formed in the fan housing around the first impeller 11, and the air flow in the first air flow passage 51 moves clockwise or counterclockwise.

In the invention, the cold flame eruption device is preferably a cold flame eruption waterfall device. In the present invention, the centrifugal fan 10 is a hair spray unit.

The first air flow path 51 and the second air flow path 52 have an overlapping portion.

There is no air inlet on the bottom plate 200 of the fan housing. The fan housing has a cavity which is defined by the top plate 100, the bottom plate 200 and the side walls 300. The top plate 100, bottom plate 200 and side walls 200 of the fan together form a fan housing.

The fan shell is internally provided with an air duct which moves clockwise or anticlockwise around the impeller.

The first impeller 11 is disposed at the center line of the second airflow path 52lTo one side of (a).

The first impeller 11 is fixedly provided on the first rotary shaft 41. Preferably, the ratio of the cross-sectional areas of the first air inlet 1 and the second air inlet 2 ranges from 1:9 to 4: 6. Preferably, the included angle between the axial direction of the air outlet 3 and the axial direction of the second air inlet 2 is [90 °, 180 ° ]. The included angle between the axial direction of the air outlet 3 and the axial direction of the second air inlet 2 can also be set to be an acute angle. The included angle between the axial direction of the air outlet 3 and the axial direction of the second air inlet 2 is 180 degrees (namely, the two are on the same straight line). Preferably, the axial direction of the air outlet 3 and the axial direction of the second air inlet 2 are both in the vertical direction.

The second air inlet 2 is an inlet of the ignited cold flame raw material to be accelerated, and the air outlet 3 is an outlet of the ignited cold flame raw material.

The ignited cold flame raw material passes through the inside of the fan shell and is sprayed out from the air outlet 3 of the fan after being accelerated by the wind power of the fan, so that the effect of spraying the cold flame is achieved.

If the cold fireworks need to be fired downwards, the device can be hung for use.

The ignition unit includes a combustion tube 203 and a heating coil 204 disposed around the combustion tube 203.

A hopper 205 for receiving cold flame raw materials from the storage unit 40 is arranged between the storage unit 40 and the ignition unit, and the hopper 205 is connected with the combustion pipe 203; preferably, the funnel 205 is of unitary construction with the burner tube 203; more preferably, the funnel 205 and the burner tube 203 are both disposed in a vertical direction.

The power unit 30 includes a second driving motor 6, and a feeding mechanism 301 connected to an output shaft of the second driving motor 6. The feed mechanism 301 extends into the magazine unit 40 and is used to convey the cold flame stock from the magazine unit 40 to the inlet 201 of the ignition unit. The feed mechanism 301 extends into the magazine unit 40 from one side of the magazine unit 40 and out from the other side. Preferably, the feeding mechanism 301 is disposed at the bottom of the magazine unit 40. More preferably, the feeding mechanism 301 is a screw. The outer surface of the screw rod is provided with threads.

In order to ensure that the cold flame stock is substantially ignited, the power unit 30 is realized by the second drive motor 6. The storage unit 40 may be implemented using a storage bin. The storage bin is filled with cold flame raw materials, such as metal powder or metal particles. The power unit 30 has a feed mechanism that extends into the storage bin and is capable of extending a portion from the storage bin to push out the cold flame stock in the storage bin. The ignition unit is implemented by a combustion tube and a heating coil. The second driving motor 6 is connected to the feeding mechanism 301. The feed mechanism 301 extends into the storage bin and can extend from the storage bin in small portions to push out the cold flame stock in the storage bin.

The feeding mechanism 301 is connected to the output shaft of the second driving motor 6, and the feeding mechanism 301 is disposed at the bottom of the storage bin to substantially push the cold flame raw materials out of the storage bin in sequence. The other end of the storage bin corresponding to the feeding mechanism 301 has a storage unit discharge port 402 for facilitating the feeding mechanism to push the cold flame raw material into the ignition unit, and the storage unit discharge port 402 is connected to the ignition unit. The top of the storage unit 40 is provided with a cold flame raw material feeding port 401. The cold flame raw material input port 401 may be covered by a magazine unit top cover 403 provided on the magazine unit 40. Normally, the screw is connected to the output shaft of the second driving motor 6 and horizontally disposed.

The connection of the storage unit 40 and the ignition unit is provided with a hopper, which is connected to the combustion pipe to collect the pushed out cold flame raw material so that the cold flame raw material can be effectively ignited.

The funnel of the ignition unit and the combustion pipe are integrally designed and vertically arranged, so that the cold fireworks raw materials can fall off conveniently.

As shown in fig. 3, the cold flame eruption device of the present invention includes a centrifugal fan 10, an ignition unit, a power unit 30 and a storage unit 40, wherein the storage unit 40 stores cold flame raw materials for ignition, the power unit 30 is connected to the storage unit 40, the storage unit 40 is connected to the ignition unit, the power unit 30 transmits the cold flame raw materials in the storage unit 40 to the ignition unit, the ignition unit ignites the cold flame raw materials, and transmits the ignited cold flame raw materials to the centrifugal fan 10, and the centrifugal fan 10 performs downward accelerated eruption, so as to achieve the effect of cold flame ignition.

The storage bin is typically a funnel-type structure that contains a source of cold flame, such as metal powder, e.g., composite titanium powder, or other metal particles. The ignition unit is realized by a combustion tube and a heating coil, and the ignition unit can be realized by the prior art, and is not described in detail herein.

If the cold flame needs to be ignited downwards, the device can be suspended for use, the center needs to be designed to be stable, and the stable ignition can be realized only when the balance state is achieved.

The feeding mechanism is typically a lead screw for connection to the second drive motor 6 and for control. The outer surface of the screw rod is provided with a thread structure so as to facilitate pushing of the cold flame raw material.

Referring to fig. 4, a screw rod mounting port is disposed at the storage bin corresponding to the horizontal position of the screw rod, and a seal design is performed between the screw rod mounting port and the screw rod to prevent the leakage of the cold flame raw material.

Simultaneously, the other end of storage silo corresponding to the horizontal direction of lead screw has the discharge end, and the discharge end extends and stretches into in the funnel, and the outside of discharge end has a discharge gate, through this export with the cold flame raw materials push into the funnel, be convenient for accurately with the cold flame raw materials push into the unit of lighting a fire.

The feeding mechanism may be a smooth surfaced structure that merely pushes the cold flame raw material into the hopper by a horizontal motion. The feeding mechanism can also be designed into a structure with a protruding external thread on the outer surface, so that the cold flame and fire raw materials can be pushed into the hopper through the rotary motion of the screw rod.

The hopper is arranged at the joint of the storage bin and the combustion pipe and connected with the combustion pipe to collect the pushed cold flame raw materials, so that the cold flame raw materials can be effectively ignited.

The heating coil is arranged on the outer wall of the combustion tube, and the combustion tube is vertically arranged so as to facilitate the falling of the cold fireworks raw materials.

The storage silo storage is used for the cold flame raw materials of setting off, and the storage silo lower part is arranged in to the motor connecting lead screw, and the lead screw conveys the funnel with the cold flame raw materials in the storage silo, then falls the combustion tube perpendicularly, and the combustion tube ignites the cold flame raw materials under heating coil's effect, makes it form the spark, and the spark drops perpendicularly from the combustion tube, and the in-process that drops is accelerated through centrifugal fan 10 to form the effect that the cold flame fire was set off.

Referring to fig. 9-12, in the centrifugal fan 10, the air flow accelerates the sparks to generate the flaming effect, so that the sparks can be quickly dropped and set off.

Referring to fig. 16 and 17, a specific application of the present invention is to arrange the cool firework blasting device in a box. The cold flame and fire spraying equipment further comprises a box body 50 and a hook 503 arranged at the top of the box body 50, the centrifugal fan 10, the ignition unit, the power unit 30 and the storage unit 40 are all arranged in the box body 50, a first opening 501 is formed in the bottom of the box body 50, and the first opening 501 and the air outlet 3 are overlapped. The top of the box 50 is provided with a second opening 502, and the cold flame raw material input port 401 and the second opening 502 are overlapped with each other.

The cold fireworks eruption equipment further comprises a support frame and a support frame fixedly arranged in the box body 50. First driving motor 4, second driving motor 6 are installed in one side of support frame, and it installs in the opposite side of support frame to ignite unit, storage unit 40, fan casing. The support frame sets up in the vertical direction, storage unit 40, ignition unit, centrifugal fan 10 set gradually from one side to the opposite side on the horizontal direction. Or, the support frame is arranged in the horizontal direction, and the storage unit 40, the ignition unit and the centrifugal fan 10 are sequentially arranged from top to bottom in the vertical direction.

Preferably, the storage unit 40, the ignition unit and the centrifugal fan 10 are arranged in sequence from top to bottom in the vertical direction.

Referring to fig. 16 and 17, the top of the box has an opening aligned with the top opening of the storage bin for feeding the raw material of the cold flame. Meanwhile, a hanger is fixed in the middle of the top of the box body, a hook is fixed at the top end of the hanger, and the waterfall machine can be hung through the hook, so that cold flame can be sprayed downwards, and the special spraying effect is achieved.

In the embodiment, the effect of downward spraying of fireworks can be realized by combining the components such as the storage unit 40, the ignition unit, the centrifugal fan 10 and the like, and the device has the characteristics of simple structure, easy realization, small volume and good controllability, is convenient to transport, install and use, does not occupy too much space in the use process, is convenient to arrange, and can be easily hung above a stage, for example, the device is matched with a performance to spray fireworks, so that the performance effect of the stage is improved; can also be hung at a proper place according to specific requirements.

Example 1

As shown in fig. 14, in the present embodiment, the centrifugal fan further includes a second rotating shaft mounted on the fan housing, and a second impeller 12 mounted on the second rotating shaft and located in the fan housing. Preferably, the second impeller 12 is located on the other side of the centerline/of the second airflow passage 52. A third airflow path 53 is formed between the outer periphery of the second impeller 12 and the fan housing. The second rotating shaft is arranged on the fan shell. Preferably, the second shaft is mounted to the base 200 of the fan housing. 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 disposed on the second rotating shaft. The first driving motor 4 drives the second rotating shaft to rotate. In the present embodiment, the first impeller 11 and the second impeller 12 are symmetrically disposed on both sides of the center line l of the second airflow passage 52. A third airflow path 53 is formed between the outer periphery of the second impeller 12 and the fan housing. The first air flow path 51 and the third air flow path 53 are merged in the second air flow path 52. In this embodiment, the airflow flowing in the first airflow channel 51 and the third airflow channel 53 act simultaneously to drive the airflow in the second airflow channel 52 to move from the second air inlet 2 to the air outlet 3, so as to achieve a better acceleration effect of the ignited raw material of the cold flame fire entering from the second air inlet 2. Preferably, the first impeller 11 and the second impeller 12 are disposed oppositely. A third air flow passage 53 is formed in the fan housing around the second impeller 12. The airflow in the third airflow passage 53 is in a clockwise or counterclockwise direction.

When it is required to accelerate and discharge the ignited raw material of the cold flame vertically downward, the first impeller 11 is set to rotate clockwise, and the second impeller 12 is set to rotate counterclockwise, as shown by the arrow direction in fig. 14.

When it is required to accelerate and discharge the ignited raw material of the cold flame vertically upward, the first impeller 11 is set to rotate counterclockwise, and the second impeller 12 is set to rotate clockwise.

Example 2

As shown in fig. 15, the present embodiment is different from embodiment 1 in 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 arranged offset on both sides of the axis l.

In this embodiment, because the first impeller 11 and the second impeller 12 are arranged in a staggered manner, the ignited raw material of the cold flame entering the second air flow channel (52) from the second air inlet 2 moves to the air outlet 3 under the driving of the air flow in the first air flow channel (51), and then moves to the air outlet 3 under the driving of the air flow in the third air flow channel (53), so that the ignited raw material of the cold flame entering from the second air inlet 2 can be accelerated better.

Example 3

As shown in fig. 13, in this embodiment, an included angle between the axial direction of the air outlet 3 and the axial direction of the second air inlet 2 may be set to be 90 °. This is suitable for applications where acceleration of the material in the horizontal direction is required. For example, the axial direction of the outlet port 3 may be set in the vertical direction, and the axial direction of the second inlet port 2 may be set in the horizontal direction. The ignited cold flame raw material (spark) enters the fan shell of the centrifugal fan 10 from the horizontal direction, the first impeller 11 rotates, the flow of the gas in the first gas flow channel 51 drives the ignited cold flame raw material to move to the air outlet 3, the acceleration process is realized, and therefore the cold flame raw material is sprayed out from the air outlet 3, and the effect of spraying the cold flame is formed.

The power unit 30, the second drive motor 6 and the magazine unit 40 may be arranged with reference to patent application No. 201510737018.4 entitled "cold flame ignition device and cold flame eruption apparatus for a cold flame eruption apparatus".

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent. After reading this disclosure, modifications of various equivalent forms of the present invention by those skilled in the art will fall within the scope of the present application, as defined in the appended claims. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

Claims (23)

1. The utility model provides a cold flame fire eruption equipment, includes centrifugal fan (10) and is used for the unit of lighting that ignites cold flame fire raw materials, centrifugal fan (10) include the fan casing, install first pivot (41) on the fan casing, adorn on first pivot (41) and be located first impeller (11) of fan casing, be formed with first air current channel (51) around first impeller (11) in the fan casing, be provided with air outlet (3) and be located first air intake (1) of first impeller (11) one side on the fan casing, its characterized in that: the fan is characterized by further comprising a second air inlet (2) which is arranged on the fan shell and communicated with the first air flow channel (51), the sectional area of the second air inlet (2) is not smaller than that of the first air inlet (1), and the first impeller (11) rotates to drive air flow entering the fan shell from the second air inlet (2) to move towards the air outlet (3); a second airflow channel (52) is formed between the second air inlet (2) and the air outlet (3); the outlet (202) of the ignition unit is connected with the second air inlet (2); the first air flow channel (51) and the second air flow channel (52) have an overlapping portion; the ignited cold flame raw materials enter a flow channel in the fan shell through the second air inlet (2), the ignited cold flame raw materials are driven to rotate in an accelerated mode through the rotation of the first impeller (11) in the fan shell, the ignited cold flame raw materials are discharged through the air outlet (3) after being accelerated, the rotation of the first impeller (11) has a suction effect on the ignited cold flame raw materials entering the second air inlet (2), and the ignited cold flame raw materials discharged from the air outlet (3) have a pushing-out effect.

2. The cold flame fire explosion apparatus of claim 1, wherein: the ratio of the cross sections of the first air inlet (1) and the second air inlet (2) ranges from 1:9 to 4: 6.

3. The cold flame fire explosion apparatus of claim 1, wherein: the included angle range between the axial direction of the air outlet (3) and the axial direction of the second air inlet (2) is [90 degrees ] and 180 degrees ].

4. The cold flame fire explosion apparatus of claim 1, wherein: the first impeller (11) is disposed on one side of a center line of the second airflow passage (52).

5. The cold flame fire explosion apparatus of claim 1, wherein: the centrifugal fan (10) further comprises a second rotating shaft arranged on the fan shell and a second impeller (12) arranged on the second rotating shaft and located in the fan shell, a third airflow channel (53) is formed in the fan shell around the second impeller (12), and the second impeller (12) rotates to drive airflow entering the fan shell from the second air inlet (2) to move towards the air outlet (3); the first air flow channel (51) and the third air flow channel (53) are merged on the second air flow channel (52).

6. The cold flame fire explosion apparatus of claim 5, wherein: the centrifugal fan further comprises a first driving motor (4) for driving the first rotating shaft (41) and the second rotating shaft to rotate.

7. The cold flame fire explosion apparatus of claim 5, wherein: the first impeller (11) and the second impeller (12) are respectively arranged on two sides of the central line of the second airflow channel (52).

8. The cold flame fire explosion apparatus of claim 7, wherein: the first impeller (11) and the second impeller (12) are symmetrically arranged on two sides of the center line of the second airflow channel (52).

9. A cold flame fire spraying apparatus according to any one of claims 1 to 8, wherein: also comprises a storage unit (40) for storing the cold flame raw material and a power unit (30) for conveying the cold flame raw material in the storage unit (40) to an inlet (201) of the ignition unit.

10. The cold flame fire explosion apparatus of claim 9, wherein: the power unit (30) comprises a second driving motor (6) and a feeding mechanism (301) connected with an output shaft of the second driving motor (6), wherein the feeding mechanism (301) extends into the storage unit (40) and is used for conveying cold flame raw materials from the storage unit (40) to an inlet (201) of the ignition unit.

11. The cold flame fire explosion apparatus of claim 10, wherein: the feeding mechanism (301) is arranged at the bottom of the storage unit (40).

12. The cold flame fire explosion apparatus of claim 10, wherein: the feeding mechanism (301) is a screw rod.

13. The cold flame fire explosion apparatus of claim 9, wherein: the ignition unit includes a combustion tube (203) and a heating coil (204) disposed around the combustion tube (203).

14. The cold flame fire explosion apparatus of claim 13, wherein: a hopper (205) used for receiving cold flame raw materials from the storage unit (40) is arranged between the storage unit (40) and the ignition unit, and the hopper (205) is connected with a combustion pipe (203).

15. The cold flame fire explosion apparatus of claim 14, wherein: the funnel (205) and the combustion pipe (203) are of an integrated structure.

16. The cold flame fire explosion apparatus of claim 14, wherein: the funnel (205) and the combustion pipe (203) are both arranged in the vertical direction or the horizontal direction.

17. The cold flame fire explosion apparatus of claim 9, wherein: still include box (50) and set up couple (503) at box (50) top, centrifugal fan (10), light unit, power pack (30), storage unit (40) all set up in box (50), box (50) bottom is provided with first trompil (501), first trompil (501) and air outlet (3) coincide each other.

18. The cold flame fire explosion apparatus of claim 17, wherein: the storage unit (40) top is provided with cold fireworks raw materials and puts in mouth (401), the top of box (50) is provided with second trompil (502), cold fireworks raw materials puts in mouth (401), second trompil (502) coincide each other.

19. The cold flame fire explosion apparatus of claim 6, wherein: the device comprises a storage unit (40) used for storing cold flame raw materials, a power unit (30) used for conveying the cold flame raw materials in the storage unit (40) to an inlet (201) of an ignition unit, a box body (50), a hook (503) arranged at the top of the box body (50), and a support frame fixedly arranged in the box body (50), wherein the power unit (30) comprises a second driving motor (6) and a feeding mechanism (301) connected with an output shaft of the second driving motor (6), and the feeding mechanism (301) extends into the storage unit (40) and is used for conveying the cold flame raw materials from the storage unit (40) to the inlet (201) of the ignition unit; the centrifugal fan (10), the ignition unit, the power unit (30) and the storage unit (40) are all arranged in the box body (50), a first opening (501) is formed in the bottom of the box body (50), and the first opening (501) and the air outlet (3) are overlapped; the support frame sets up on vertical direction or horizontal direction, first driving motor (4), second driving motor (6) set up in one side of support frame, light unit, storage unit (40), fan casing set up in the opposite side of support frame.

20. The cold flame fire explosion apparatus of claim 19, wherein: the storage unit (40), the ignition unit and the centrifugal fan (10) are sequentially arranged from one side to the other side in the horizontal direction.

21. The cold flame fire explosion apparatus of claim 20, wherein: the axial direction of the air outlet (3) and the axial direction of the second air inlet (2) are both in the horizontal direction.

22. The cold flame fire explosion apparatus of claim 19, wherein: the storage unit (40), the ignition unit and the centrifugal fan (10) are sequentially arranged from top to bottom in the vertical direction.

23. The cold flame fire explosion apparatus of claim 22, wherein: the axial direction of the air outlet (3) and the axial direction of the second air inlet (2) are both in the vertical direction.

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