Explosive mixing device for firework production

Abstract

The invention discloses an explosive mixing device for firework production, which comprises an explosive mixing barrel and a stirring assembly, and the stirring assembly is mounted on the explosive mixing barrel and is used for stirring materials in the explosive mixing barrel; the stirring assembly comprises a driving part, a stirring shaft and a plurality of stirring paddles; the driving part is mounted at the upper end of the pesticide mixing barrel, one end of the stirring shaft is in transmission connection with the driving part, the other end of the stirring shaft extends into the pesticide mixing barrel, and the stirring paddles are arranged on the stirring shaft; the gas conveying assembly is used for conveying gas into the chemical mixing barrel, so that materials in the chemical mixing barrel are stirred more uniformly. By arranging the gas transmission assembly, on one hand, the gas transmission assembly can enable materials in the mixing barrel to be stirred more uniformly, on the other hand, the hard contact probability between the materials and the surface of the movable part can be reduced, and the explosion risk is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fireworks production, and in particular to a powder mixing device for fireworks production. Background Art

[0002] Fireworks, also known as fireworks, pyrotechnics, and fireworks, were invented early by the Chinese working people and are often used in grand ceremonies or performances.

[0003] At present, the processing and manufacturing of fireworks and firecrackers are mostly carried out using simple manual devices, which have problems such as unstable quality, low efficiency, and inability to form large-scale production. This leads to high production costs for enterprises, unstable effects of fireworks, and workers are prone to safety accidents.

[0004] In the manufacturing process of fireworks and firecrackers, mixing explosives is an important process. The safety and large-scale production of mixed explosives directly affect the safety of production and the production efficiency of fireworks. At present, mixing explosives is mostly done by simple manual devices, which directly leads to the following problems: the explosives are easy to explode when mixed, which seriously affects the personal safety of production workers. Summary of the invention

[0005] The problem to be solved by the present invention is to provide a powder mixing device for fireworks production. By setting up a gas delivery component, the gas delivery component can, on the one hand, make the material in the powder mixing barrel be stirred more evenly, and on the other hand, it can reduce the probability of hard contact between the material and the surface of the movable part, thereby further reducing the risk of explosion.

[0006] The technical solution provided by the present invention to solve the above problems is: a medicine mixing device for fireworks production, comprising a medicine mixing barrel and a stirring assembly, wherein the stirring assembly is installed on the medicine mixing barrel and is used to stir the materials in the medicine mixing barrel; the stirring assembly comprises a driving member, a stirring shaft and a plurality of stirring paddles;

[0007] The driving member is installed on the upper end of the medicine mixing barrel, one end of the stirring shaft is connected to the driving member, and the other end extends into the medicine mixing barrel, and a plurality of stirring paddles are arranged on the stirring shaft;

[0008] It also includes a gas delivery component, which is used to deliver gas to the medicine mixing barrel so that the materials in the medicine mixing barrel are stirred more evenly.

[0009] Preferably, the driving member is a servo motor.

[0010] Preferably, the gas delivery assembly includes a gas generator and a connecting pipe, and the gas generator is used to generate an inert gas with a low temperature.

[0011] Preferably, the inert gas is nitrogen.

[0012] Preferably, a gas flow channel communicating with the connecting pipe is provided on the stirring shaft and the stirring paddle, and the gas conveyed from the connecting pipe enters the medicine mixing barrel through the gas flow channel.

[0013] Preferably, the gas flow channel includes an axial flow channel and a blade flow channel. The axial flow channel is axially arranged on the stirring shaft, the blade flow channel is arranged on the stirring paddle, the axial flow channel is communicated with the blade flow channel, and the axial flow channel is communicated with the connecting pipe.

[0014] Preferably, the connecting pipe is rotatably connected to the lower end of the stirring shaft.

[0015] Preferably, the stirring paddle includes a fixing part. One end of the fixing part is fixedly connected to the stirring shaft, the blade flow channel is arranged on the fixing part, and a plurality of first air holes are arranged on the stirring shaft. The first air holes are communicated with the blade flow channel.

[0016] Preferably, the stirring paddle further includes a movable part. An activity cavity matching with the fixing part is arranged on the movable part. A plurality of second air holes are arranged on the activity cavity. A first magnetic attraction block is arranged at the bottom of the activity cavity. A second magnetic attraction block capable of being attracted by the first magnetic attraction block is arranged at one end of the fixing part. When the first magnetic attraction block is attracted to the second magnetic attraction block, the first air holes and the second air holes are arranged in a staggered manner, and the movable part blocks the first air holes.

[0017] Preferably, a clamping part is arranged at the opening section of the activity cavity, and a protruding part matching with the clamping part is arranged at one end of the fixing part.

[0018] Compared with the prior art, the advantages of the present invention are as follows: by arranging the gas transmission component, on the one hand, the gas transmission component can make the materials in the medicine mixing barrel be stirred more evenly, and on the other hand, it can reduce the probability of hard contact between the materials and the surface of the movable part, further reducing the explosion risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation to the present invention.

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a cross-section of the present invention Figure 1 ;

[0022] Figure 3 is a cross-section of the present invention Figure 2 ;

[0023] Figure 4It is a cross-sectional view of the stirring shaft and the stirring paddle of the present invention;

[0024] Figure 5 is Figure 4 the enlarged structural schematic diagram at position A in

[0025] Reference numerals in the attached drawings: 1. Servo motor, 2. Medicine mixing barrel, 3. Movable part, 4. Second air outlet hole, 5. Fixed part, 6. Stirring shaft, 7. First air outlet hole, 8. Blade flow channel, 9. Axial flow channel, 10. First magnetic attraction block, 11. Second magnetic attraction block, 12. Activity cavity, 13. Engaging part, 14. Protruding part, 15. Connecting pipe. Detailed implementation manners

[0026] The following will describe in detail the implementation manners of the present invention in conjunction with the drawings and embodiments, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the implementation process of technical effects and implement accordingly.

[0027] In the description of the present invention, it should be noted that for orientation terms, such as terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the indicated orientation and position relationships are based on the orientation or position relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0028] In addition, for terms "first" and "second", they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0029] In the present invention, unless otherwise clearly specified and limited, for terms "assembly", "connection", "connection", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or connected through an intermediate medium, and it can be the internal connection and communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0030] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0031] It should also be understood that the terms used in the specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0032] Specific embodiments of the present invention are shown in the accompanying drawings. A mixing device for firecracker production includes a mixing barrel 2 and a stirring assembly. The stirring assembly is installed on the mixing barrel 2 for stirring the materials in the mixing barrel 2. It is characterized in that: the stirring assembly includes a driving member, a stirring shaft 6, and a plurality of stirring paddles;

[0033] The driving member is installed at the upper end of the mixing barrel 2. One end of the stirring shaft 6 is in transmission connection with the driving member, and the other end extends into the mixing barrel 2. A plurality of the stirring paddles are arranged on the stirring shaft 6;

[0034] It further includes a gas transmission assembly for delivering gas into the mixing barrel 2 to make the materials in the mixing barrel 2 stirred more evenly.

[0035] Specifically, the driving member is a servo motor 1; the gas transmission assembly includes a gas generator and a connecting pipe 15. The gas generator is used to generate inert gas with low temperature. Further, the inert gas is nitrogen.

[0036] As another embodiment of the present invention, gas flow channels communicated with the connecting pipe 15 are arranged on the stirring shaft 6 and the stirring paddles. The gas delivered from the connecting pipe 15 enters the mixing barrel 2 through the gas flow channels.

[0037] In this embodiment, specifically, the gas flow channels include an axial flow channel 9 and a blade flow channel 8. The axial flow channel 9 is axially arranged on the stirring shaft 6. The blade flow channel 8 is arranged on the stirring paddle. The axial flow channel 9 is communicated with the blade flow channel 8, and the axial flow channel 9 is communicated with the connecting pipe 15.

[0038] Specifically, the specific connection manner between the stirring shaft and the connecting pipe is that the connecting pipe 15 is rotatably connected to the lower end of the stirring shaft 6.

[0039] Specifically, the stirring paddle includes a fixing part 5, one end of the fixing part 5 is fixedly connected to the stirring shaft 6, the blade flow channel 8 is arranged on the fixing part 5, a plurality of first air holes 7 are arranged on the stirring shaft 6, and the first air holes 7 communicate with the blade flow channel 8. Further, the stirring paddle further includes a movable part 3, an activity cavity 12 matched with the fixing part 5 is arranged on the movable part 3, a plurality of second air holes 4 are arranged on the activity cavity 12, a first magnetic attraction block 10 is arranged at the bottom of the activity cavity 12, and a second magnetic attraction block 11 capable of attracting the first magnetic attraction block 10 is arranged at one end of the fixing part 5. When the first magnetic attraction block 10 is attracted to the second magnetic attraction block 11, the first air holes 7 and the second air holes 4 are arranged in a staggered manner, and the movable part blocks the first air holes 7.

[0040] In the above solution, the inert gas with low temperature generated by the gas generator is dispersed into the inside of the mixing barrel through the first air holes on the blade through the connecting pipe. On the one hand, it can blow the materials in the mixing barrel, making the materials in the mixing barrel mix more evenly. On the other hand, the inert gas with low temperature can reduce the temperature in the mixing barrel and protect the stirring work of the stirring component, preventing sparks from being generated during the stirring process of the materials and causing an explosion. At the same time, it can reduce the hard contact between the materials and the surface of the stirring paddle, further reducing the explosion risk.

[0041] As known to those skilled in the art, when there is gas with a certain flow rate rushing out of the first air holes, no materials will fall into the first air holes. However, when the stirring stops and the gas generating device is closed, the materials in the mixing barrel are likely to fall into the blade flow channel from the first air holes, which is likely to cause blockage of the blade flow channel and waste of materials. Therefore, in this solution, the blade is designed in a combined manner of a fixing part and a movable part. Specifically, when the stirring shaft rotates, under the action of centrifugal force, the first magnetic attraction block and the second magnetic attraction block are separated, and the movable part moves away from the fixing part (such as Figure 3As shown in the figure, at this time, the movable part no longer blocks the first air outlet, and the gas in the blade flow channel can enter the mixing barrel through the first air outlet and the second air outlet; when the stirring shaft stops rotating and the gas generating device is closed, the centrifugal force of the movable part disappears, and the movable part moves towards the fixed part under the action of the suction force between the first magnetic attraction block and the second magnetic attraction block until the first magnetic attraction block and the second magnetic attraction block are re-attracted. Since the first air outlet 7 and the second air outlet 4 are arranged in a staggered manner, the movable part can block the first air outlet to prevent the material from entering the blade flow channel through the first air outlet and the second air outlet; in the above solution, by setting the fixed part and the movable part, on the one hand, during the stirring process, the movable part will move away from the fixed part, thus effectively increasing the stirring area. Moreover, the second air outlet is provided on the movable part, and the gas ejected through the second air outlet can also reduce the probability of hard contact between the material and the surface of the movable part. On the other hand, when the mixing barrel stops working, the first air outlet and the second air outlet can be blocked to prevent the material from entering the blade flow channel through the first air outlet and the second air outlet.

[0042] Among them, it should be noted that in order to prevent the fixed part from detaching from the movable cavity, a clamping part 13 is provided at the opening section of the movable cavity 12, and a protruding part is provided at one end of the fixed part 5 that cooperates with the clamping part 13. The limit of the movable part is achieved through the cooperation of the protruding part and the clamping part.

[0043] The above is only an illustration of the best embodiment of the present invention, but it should not be construed as a limitation of the claims. The present invention is not limited to the above embodiments, and its specific structure allows changes. All changes made within the protection scope of the independent claims of the present invention are within the protection scope of the present invention.

Claims

1. A mixing device for firework production, comprising a mixing barrel (2) and a stirring assembly, wherein the stirring assembly is installed on the mixing barrel (2) for stirring the materials in the mixing barrel (2); characterized in that: The stirring assembly includes a driving member, a stirring shaft (6) and a plurality of stirring paddles; The driving member is installed at the upper end of the medicine mixing barrel (2). One end of the stirring shaft (6) is in transmission connection with the driving member, and the other end extends into the medicine mixing barrel (2). A plurality of the stirring paddles are arranged on the stirring shaft (6); It further includes a gas transmission assembly for conveying gas into the medicine mixing barrel (2) to make the materials in the medicine mixing barrel (2) stirred more evenly.

2. The mixing device for firework production according to claim 1, wherein: The driving member is a servo motor (1).

3. The mixing device for firework production according to claim 1, wherein: The gas transmission assembly includes a gas generator and a connecting pipe (15). The gas generator is used for generating inert gas with low temperature.

4. The mixing device for firecracker production according to claim 3, characterized in that: The inert gas is nitrogen.

5. A mixing device for firework production according to claim 3 or 4, characterized in that: Gas flow channels communicating with the connecting pipe (15) are arranged on the stirring shaft (6) and the stirring paddles. The gas conveyed from the connecting pipe (15) enters the medicine mixing barrel (2) through the gas flow channels.

6. The mixing device for firecracker production according to claim 5, characterized in that: The gas flow channels include an axial flow channel (9) and a blade flow channel (8). The axial flow channel (9) is axially arranged on the stirring shaft (6). The blade flow channel (8) is arranged on the stirring paddle. The axial flow channel (9) communicates with the blade flow channel (8), and the axial flow channel (9) communicates with the connecting pipe (15).

7. A medicine mixing device for firecracker production according to claim 5, characterized in that: The connecting pipe (15) is rotatably connected to the lower end of the stirring shaft (6).

8. A mixing device for firework production according to claim 6, characterized in that: The stirring paddle includes a fixing part (5). One end of the fixing part (5) is fixedly connected to the stirring shaft (6). The blade flow channel (8) is arranged on the fixing part (5). A plurality of first air holes (7) are arranged on the stirring shaft (6), and the first air holes (7) communicate with the blade flow channel (8).

9. The mixing device for firework production according to claim 8, wherein: The stirring paddle further includes a movable part (3). An activity cavity (12) matching with the fixing part (5) is arranged on the movable part (3). A plurality of second air holes (4) are arranged on the activity cavity (12). A first magnetic attraction block (10) is arranged at the bottom of the activity cavity (12). A second magnetic attraction block (11) capable of being attracted to the first magnetic attraction block (10) is arranged at one end of the fixing part (5). When the first magnetic attraction block (10) is attracted to the second magnetic attraction block (11), the first air holes (7) and the second air holes (4) are arranged staggeredly, and the movable part blocks the first air holes (7).

10. The mixing device for firecracker production according to claim 9, characterized in that: A clamping part (13) is arranged at the opening section of the activity cavity (12). A protruding part matching with the clamping part (13) is arranged at one end of the fixing part (5).

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