An automated flash powder mixing production line and mixing method

Abstract

The present application discloses a bright bead automatic mixing production line and a mixing method, which relates to the technical field of mixing equipment. The mixing production line includes a powder dispensing unit, a first mixing unit, a second mixing unit, and a drying unit located in different spaces. The powder dispensing unit conveys the weighed powder materials to the first mixing unit through a first channel. The first mixing unit conveys the uniformly mixed powder material mixture to the second mixing unit through a second channel. The second mixing unit includes a plurality of rotary mixing sub-units, and the rotary mixing sub-units rotate and mix the bead cores, the powder material mixture, and the solvent into mixed particulate matters, which are dried to obtain bright beads. In the present application, the material transfer device transfers materials within the unit and between adjacent units. The powder dispensing unit, the first mixing unit, the rotary mixing sub-units, and the drying unit automatically and continuously complete the weighing and mixing of the pharmaceutical powder materials required for bright bead mixing, improving the production efficiency, reducing human operation errors, and reducing the health and safety risks of production.

Description

Technical Field

[0001] This application relates to the technical field of mixing equipment, and specifically to an automated mixing production line and mixing method for flash beads. Background Art

[0002] Flash beads are a common type of fireworks, which are formed by sequentially coating a bead core with a uniformly mixed functional powder layer and an ignition powder layer from the inside out. Among them, the functional powder layer and the ignition powder layer are powder mixtures containing a variety of different pharmaceutical powders, and when coating the bead core, it is also necessary to remix the bead core particles, liquid, and powder mixture.

[0003] At present, flash bead production mostly adopts semi-automatic mixing, either manually weighing the pharmaceutical powders and then adding them to the mixing device for mixing, or weighing by a weighing device and then manually adding them to the mixing device for mixing. Due to the safety requirements of flash bead production, different processes often need to be set in different isolated spaces, which also makes it difficult to achieve the continuity and automation of the entire production process, affecting production efficiency. Manual operations are prone to errors, and the pharmaceutical powders have certain toxicity and harmfulness, and long-term exposure by personnel will damage their health. Summary of the Invention

[0004] This application provides an automated mixing production line for flash beads, aiming to at least improve the technical problems existing in the prior art.

[0005] According to the above purpose, this application provides an automated mixing production line for flash beads, including:

[0006] A powder dispensing unit, which outputs after weighing various pharmaceutical powders used for flash beads;

[0007] A first mixing unit, which is connected to the powder dispensing unit through a first channel, and the first mixing unit receives the pharmaceutical powders output by the powder dispensing unit and uniformly mixes them into a powder mixture and then outputs;

[0008] A second mixing unit, which is connected to the first mixing unit through a second channel, and the second mixing unit includes a plurality of independent rotary mixing sub-units. The rotary mixing sub-units mix and coat the bead core, solvent, and the powder mixture output by the first mixing unit received to form mixed particles and then output;

[0009] A drying unit, which is connected to the rotary mixing sub-unit through a third channel, and the drying unit receives the mixed particles output by the rotary mixing sub-unit and dries them to obtain flash bead particles;

[0010] Among them, the powder blending unit, the first mixing unit, the rotary mixing sub-unit and the drying unit are respectively located in adjacent partitioned spaces. The powder blending unit, the first mixing unit and the rotary mixing sub-unit are respectively provided with a first material transfer device, a second material transfer device and a third material transfer device. The first material transfer device cooperates with the first channel, the second material transfer device cooperates with the second channel, and the third material transfer device cooperates with the third channel to convey materials within different partitioned spaces and between partitioned spaces, so as to realize the continuous mixing and production of flash beads.

[0011] The present application has the following beneficial effects: The powder blending unit, the first mixing unit, the rotary mixing sub-unit and the drying unit are respectively arranged in adjacent partitioned spaces. The material transfer device completes the material transfer within the unit and between adjacent units, realizing the continuous automatic completion of weighing, mixing and drying and shaping of the pharmaceutical powder. Multiple independent rotary mixing sub-units can produce different types of flash beads simultaneously, improving production efficiency, reducing errors in manual operations, and reducing the health and safety risks brought by human contact.

[0012] Further, the first material transfer device, the second material transfer device and the third material transfer device each include a traction component and a moving seat. A manipulator is provided on the moving seat, and a material transfer hopper is provided on the manipulator. The traction component drives the moving seat to move, and the manipulator drives the material transfer hopper to move, so as to realize the picking up and conveying of materials.

[0013] Further, the powder blending unit includes a plurality of powder blending devices. The powder blending device includes a powder storage barrel and a first weighing scale. The pharmaceutical powder in the powder storage barrel is conveyed to the first weighing scale through negative pressure, and the pharmaceutical powder is discharged after being weighed by the first weighing scale.

[0014] Further, the first mixing unit includes a paddle mixer, and the inlet of the paddle mixer faces the outlet of the first channel.

[0015] Further, the rotary mixing sub-unit further includes a solvent adding device, a bead core adding device, a powder mixture adding device, a rotary mixer and a screening device.

[0016] Further, the bead core adding device includes a bead core barrel, a bead core hopper and a second weighing scale. The bead cores in the bead core barrel are conveyed to the bead core hopper through negative pressure. The outlet of the bead core hopper is communicated with the inlet of the second weighing scale through a pneumatic vibrating conveying component. The bead cores enter the second weighing scale and are discharged after being weighed.

[0017] Further, the powder mixture adding device includes a transfer hopper and a third weighing scale. The outlet of the transfer hopper is communicated with the inlet of the third weighing scale through a pneumatic vibrating conveying assembly. A pneumatic valve plate is provided at the outlet of the third weighing scale. The pneumatic valve plate can open or close the outlet of the third weighing scale, and the opening after the pneumatic valve plate is opened faces the rotary mixer.

[0018] Further, the rotary mixer can rotate axially and swing up and down.

[0019] Further, the screening device includes a vibrating screen. A finished product hopper is provided at the discharge port of the vibrating screen, and a defective product hopper is provided at the screening outlet of the vibrating screen.

[0020] The present invention also provides a method for mixing flash beads, which is used for the flash bead automatic mixing production line as described above, and includes the following steps:

[0021] S1. Add the pharmaceutical powder and the bead cores into the corresponding powder storage barrels and bead core barrels respectively;

[0022] S2. Input the mixing instruction for the functional powder layer and start the powder mixing unit;

[0023] S3. The pharmaceutical powder in the powder storage barrel is negatively pressure conveyed into the first weighing scale. The first weighing scale weighs and discharges the set weight of the pharmaceutical powder and falls into the transfer hopper of the first transfer device;

[0024] S4. The first transfer device sequentially moves and picks up the pharmaceutical powder weighed and discharged by each powder mixing device, and finally moves to the first channel. The manipulator moves the transfer hopper to the entrance of the first channel and discharges the pharmaceutical powder in the transfer hopper;

[0025] S5. The pharmaceutical powder entering the first channel falls into the paddle mixer from the outlet of the first channel. The paddle mixer is started to uniformly stir and mix the pharmaceutical powder into a powder mixture;

[0026] S6. The bead core adding device of the rotary mixing sub-unit for mixing the powder mixture is started. The bead cores in the bead core barrel are negatively pressure conveyed into the bead core hopper. The pneumatic vibrating conveying assembly sends the bead cores in the bead core hopper into the second weighing scale. After the bead cores entering the second weighing scale reach the set weight, the pneumatic vibrating conveying assembly stops; the transfer device moves to the second weighing scale. The manipulator drives the transfer hopper to pick up the bead cores discharged by the second weighing scale and then moves to the transfer hopper, puts the bead cores into the transfer hopper. The pneumatic vibrating conveying assembly sends the bead cores in the transfer hopper into the third weighing scale. The pneumatic valve plate is opened to send the bead cores into the rotary mixer;

[0027] S7. The second material transfer device moves to the paddle mixer. After the manipulator drives the material hopper to pick up the powder mixture discharged from the paddle mixer, it moves to the second channel. The manipulator moves the material hopper to the entrance of the second channel and discharges the powder mixture in the material hopper.

[0028] S8. The third material transfer device moves and picks up the powder mixture falling out from the outlet of the second channel, moves to the transfer hopper, and puts the powder mixture into the transfer hopper.

[0029] S9. The rotary mixer starts. The pneumatic vibrating conveying component sends the powder mixture in the transfer hopper into the third weighing scale. After the powder mixture entering the third weighing scale reaches the weight of the current batch of feeding, the pneumatic vibrating conveying component stops, the pneumatic valve plate opens, and the powder mixture in the third weighing scale is added to the rotary mixer.

[0030] S10. The rotary mixer continues to rotate. The powder mixture entering the rotary mixer is evenly dispersed and coated on the bead core. The solvent adding device simultaneously sprays high-pressure atomized alcohol or water to make the powder mixture coated on the bead core adhere and not fall off.

[0031] S11. The third weighing scale repeatedly weighs the powder mixture and adds it to the rotary mixer until all the powder mixture is discharged. The rotary mixer continues to rotate until the powder mixture is completely coated and forms pre-mixed particles.

[0032] S12. The third material transfer device moves below the rotary mixer. The rotary mixer flips, and the manipulator drives the material hopper to pick up the pre-mixed particles discharged from the rotary mixer.

[0033] S13. The manipulator drives the material hopper to move to the screening device and put the pre-mixed particles into it. The screening device screens the put pre-mixed particles. The pre-mixed particles with qualified external dimensions enter the finished product hopper, and those with unqualified external dimensions enter the defective product hopper. The manipulator drives the material hopper to pick up the pre-mixed particles in the finished product hopper and then put them back into the transfer hopper. The pre-mixed particles are weighed by the third weighing scale and then added back to the rotary mixer.

[0034] S14. According to the weighed quantity of the pre-mixed particles, the control system calculates the weight of the ignition powder layer required and sends a mixing instruction for the ignition powder layer to the powder mixing unit.

[0035] S15. According to the instruction, the powder mixing unit repeats steps S3 - S5, S7 - S12 to obtain the mixed particulate matter. The third material transfer device moves below the rotary mixer. The rotary mixer flips, and the manipulator drives the material hopper to pick up the mixed particulate matter discharged from the rotary mixer. The third material transfer device moves to the entrance of the third channel, and the manipulator drives the material hopper to put the mixed particulate matter into the third channel.

[0036] S16. The mixed particulate matter entering the third channel enters the drying mechanism through the outlet of the third channel and is dried and formed into finished bright bead particles.

[0037] For better understanding and implementation, the present invention will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0038] Figure 1 is an overall schematic diagram of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application;

[0039] Figure 2 is a schematic diagram of a powder mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application;

[0040] Figure 3 is another schematic diagram of a powder mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application;

[0041] Figure 4 is a schematic diagram of a powder mixing device of a powder mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application;

[0042] Figure 5 is a schematic diagram of a first mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application.

[0043] Figure 6 is a schematic diagram of a second mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application.

[0044] Figure 7 is a schematic diagram of a rotary mixing subunit of a second mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application.

[0045] Figure 8 is another schematic diagram of a rotary mixing subunit of a second mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application.

[0046] Figure 9 is yet another schematic diagram of a rotary mixing subunit of a second mixing unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application.

[0047] Figure 10 is Figure 9 an enlarged schematic diagram of part A of

[0048] Figure 11 is a schematic diagram of a drying unit of an automatic bright bead mixing production line provided in an exemplary embodiment of the present application.

[0049] Among them, Figures 1 to 11The descriptions of the reference numerals in the drawings are as follows:

[0050] 1 Powder blending unit, 11 First channel, 12 Powder blending device, 121 Powder storage tank, 122 First weighing scale;

[0051] 2 First mixing unit, 21 Second channel, 22 Paddle mixer;

[0052] 3 Second mixing unit, 31 Third channel, 32 Rotary mixing sub-unit, 33 Solvent adding device, 34 Core bead adding device, 36 Rotary mixer, 37 Screening device, 341 Core bead tank, 342 Core bead hopper, 343 Second weighing scale, 351 Transfer hopper, 352 Third weighing scale, 353 Pneumatic valve plate, 371 Finished product hopper, 372 Defective product hopper;

[0053] 4 Drying unit;

[0054] 51 Traction assembly, 52 Moving seat, 53 Manipulator, 54 Material transfer hopper, 501 First material transfer device, 502 Second material transfer device, 503 Third material transfer device;

[0055] 6 Material distributing device, 61 Material distributing hopper. Detailed implementation manners

[0056] In order to better illustrate the present invention, the present invention will be further described in detail below with reference to the drawings.

[0057] It should be clear that the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope of protection of the embodiments of the present application.

[0058] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the embodiments of the present application. The singular forms of "a", "the" and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0059] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects and do not necessarily need to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0060] In addition, in the description of the present application, unless otherwise specified, "a plurality" means two or more. "And / or" describes the association relationship of associated objects and indicates that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0061] As shown in the attached Figures 1-11 drawings, the present application provides a bright bead automatic mixing production line through the following technical solutions, including:

[0062] A powder dispensing unit 1 for weighing various pharmaceutical powders used for bright beads and then outputting them;

[0063] A first mixing unit 2 is connected to the powder dispensing unit 1 through a first channel 11. The first mixing unit 2 receives the pharmaceutical powders output by the powder dispensing unit 1, uniformly mixes them into a powder mixture, and then outputs it;

[0064] A second mixing unit 3 is connected to the first mixing unit 2 through a second channel 21. The second mixing unit 3 includes a plurality of independent rotary mixing sub-units 32. The rotary mixing sub-units 32 mix and coat the bead cores, solvents, and the powder mixture output by the first mixing unit 2 received to form mixed particles and then output them;

[0065] A drying unit 4 is connected to the rotary mixing sub-unit 32 through a third channel 31. The drying unit 4 receives the mixed particles output by the rotary mixing sub-unit 32 and dries them to obtain bright bead particles;

[0066] Among them, the powder blending unit 1, the first mixing unit 2, the rotary mixing sub-unit 32, and the drying unit 4 are respectively located in adjacent partitioned spaces. The first material transfer device 501, the second material transfer device 502, and the third material transfer device 503 are respectively provided in the powder blending unit 1, the first mixing unit 2, and the rotary mixing sub-unit 32. The first material transfer device 501 cooperates with the first channel 11, the second material transfer device 502 cooperates with the second channel 21, and the third material transfer device 503 cooperates with the third channel 31 to transfer materials within different partitioned spaces and between partitioned spaces, so as to realize the continuous mixing production of flash beads.

[0067] Compared with the prior art, the present application has the following beneficial effects: The powder blending unit, the first mixing unit, the rotary mixing sub-unit, and the drying unit are respectively arranged in adjacent partitioned spaces. The material transfer device completes the material transfer within the unit and between adjacent units, realizing the continuous automatic completion of weighing, mixing, and drying and shaping of the pharmaceutical powder. Multiple independent rotary mixing sub-units can produce different types of flash beads simultaneously, improving production efficiency, reducing errors in manual operations, and reducing the health and safety risks brought by human contact.

[0068] In the technical solution of this embodiment, the first material transfer device 501, the second material transfer device 502, and the third material transfer device 503 each include a traction assembly 51 and a moving seat 52. A manipulator 53 is provided on the moving seat 52, and a material transfer hopper 54 is provided on the manipulator 53. The traction assembly 51 drives the moving seat 52 to move, and the manipulator 53 drives the material transfer hopper 54 to move. The traction assembly 51 can be a traction rope, a traction wheel, or a traction block driven by a motor. In this embodiment, the traction assembly 51 is a traction rope driven by a motor. Rollers are provided at the bottom of the moving seat 52, and the traction rope drives the moving seat 52 to move, realizing movement at different material receiving positions. When the moving seat 52 reaches the corresponding position, the manipulator 53 moves the material transfer hopper 54 up and down to receive or release materials.

[0069] The powder blending unit 1 includes multiple powder blending devices 12. The powder blending device 12 includes a powder storage barrel 121 and a first weighing scale 122. One of the pharmaceutical powders required for flash beads is put into the powder storage barrel 121, and this kind of pharmaceutical powder is transported to the first weighing scale 122 by negative pressure. The first weighing scale weighs the corresponding weight of the powder according to the system requirements. After the first material transfer device 501 in the powder blending unit 1 arrives, the weighed powder is discharged from the outlet of the first weighing scale 122 and falls into the material transfer hopper 54, thus completing the weighing of one kind of pharmaceutical powder. The first material transfer device 501 in the powder blending unit 1 moves among different powder blending devices 12, and can complete the weighing of multiple kinds of pharmaceutical powders, realizing the simultaneous weighing of different kinds of pharmaceutical powders required for flash beads. Using the first weighing scale 122 for weighing can also ensure the accuracy of powder weighing, avoiding problems such as missing weighing and inaccurate weighing of pharmaceutical powders during manual operations.

[0070] The mixture containing various pharmaceutical powders weighed by the powder blending unit 1 is premixed by the first mixing unit 2. The first mixing unit 2 uses a paddle mixer 22. Compared with other types of mixers, the paddle mixer 22 has stronger mixing ability and can stir and mix the mixture containing various pharmaceutical powders evenly in a shorter time to form a powder mixture that meets the requirements. In addition, the paddles of the paddle mixer 22 can rotate cooperatively when feeding or discharging materials in the paddle mixer 22, ensuring smooth feeding and reducing the residue during discharging. In this example, the inlet of the paddle mixer 22 faces the outlet of the first channel 11, which can reduce the exposure and scattering of the pharmaceutical powders during the feeding process and improve the environment of the production site.

[0071] The second mixing unit 3 includes a plurality of rotary mixing sub-units 32. Each rotary mixing sub-unit 32 can perform rotary mixing on the added powder mixture, bead core particles and solvent to form mixed particulate matter. After drying and shaping, the mixed particulate matter becomes the finished product of the flash beads. Therefore, setting a plurality of rotary mixing sub-units 32 can not only carry out the mixed production of the same type of flash beads finished product simultaneously, but also carry out the mixed production of different types of flash beads finished product simultaneously, improving the production capacity.

[0072] Specifically, the rotary mixing sub-unit 32 includes a third material transfer device 503, and also includes a solvent adding device 33, a bead core adding device 34, a powder mixture adding device, a rotary mixer 36 and a screening device 37.

[0073] The bead core adding device 34 includes a bead core barrel 341, a bead core hopper 342 and a second weighing scale 343. The bead core barrel 341 is used to store granular bead core raw materials. The bead core is transported to the bead core hopper 342 by negative pressure. The outlet of the bead core hopper 342 is connected to the inlet of the second weighing scale 343 through a pneumatic vibrating conveying component. The pneumatic vibrating conveying component operates to send the bead core in the bead core hopper 342 into the second weighing scale 343. The second weighing scale 343 weighs the incoming bead core at the same time. When the required weight is reached, the pneumatic vibrating conveying component stops operating, and the bead core in the second weighing scale 343 is discharged and picked up by the third material transfer device 503.

[0074] The powder mixture adding device includes a transfer hopper 351 and a third weighing scale 352. The outlet of the transfer hopper 351 is communicated with the inlet of the third weighing scale 352 through a pneumatic vibration conveying component. A pneumatic valve plate 353 is provided at the outlet of the third weighing scale 352. The pneumatic valve plate 353 can open or close the outlet of the third weighing scale 352. The opening after the pneumatic valve plate 353 is opened faces the rotary mixer 36. The third material transfer device 503 picks up the powder mixture output by the first mixing unit 2 and puts it into the transfer hopper 351. The pneumatic vibration conveying component operates to send the powder mixture in the transfer hopper 351 into the third weighing scale 352. The third weighing scale 352 weighs the incoming powder mixture at the same time. When the required weight is reached, the pneumatic valve plate 353 is opened, and the powder mixture in the third weighing scale 352 enters the rotary mixer 36 through the opening after the pneumatic valve plate 353 is opened. It should be noted that the third weighing scale 352 can weigh all the powder mixtures required for the current rotary mixing at one time and add them into the rotary mixer 36, or can weigh the powder mixtures required for the current rotary mixing in small amounts and multiple times and add them into the rotary mixer 36 in batches. Since the rotary mixing needs to achieve uniform mixing of the granular bead core and the powder mixture, and at the same time, the powder mixture needs to coat the bead core, the method of weighing in small amounts and multiple times and adding in batches can achieve better uniform mixing and coating.

[0075] Since the third material transfer device 503 has to pick up and convey the bead cores released by the second weighing scale 343, and also pick up and convey the powder mixture output by the first mixing unit. Therefore, in order to improve the efficiency of the third material transfer device 503, in the embodiment applied to the present technical solution, a material distribution device 6 is further provided in the second mixing unit 3. The material distribution device 6 includes a moving component (not shown in the figure) and a material distribution hopper 61. The moving component can drive the material distribution hopper 61 to reciprocate along the arrangement direction of a plurality of rotary mixing sub-units 32, so that after the material distribution hopper 61 picks up the powder mixture falling from the second channel 21, it moves to the rotary mixing sub-unit 32 that needs to use the powder mixture, and then the third material transfer device 503 of the rotary mixing sub-unit 32 picks up the powder mixture, reducing the moving distance of the third material transfer device 503, improving the production efficiency, and also facilitating the efficient and orderly arrangement of a plurality of rotary mixing sub-units 32.

[0076] The rotary mixer 36 can rotate around the axis and swing up and down. Different from the paddle mixer 22, the rotary mixer 36 does not have rotatable paddles, but realizes mutual mixing by axially rotating the machine body to drive the materials inside the machine body to flip. When the rotary mixer 36 rotates axially, the bead cores in the machine body also rotate and roll synchronously. The rotating and rolling bead cores continuously contact and adhere to the powder mixture, thereby realizing the mixing and coating of the powder mixture on the bead cores.

[0077] The screening device 37 includes a vibrating screen, and an upper screen and a lower screen (both not shown in the figure) are successively arranged on the vibrating screen from top to bottom.

[0078] The drying unit 4 mainly includes an oven, which can complete the baking, drying and shaping of the mixed particulate matter. The drying unit 4 corresponds one-to-one with the rotary mixing sub-unit 32.

[0079] It should be noted that valves are provided at the outlets of the first weighing scale 122, the second weighing scale 343, the bead core hopper 342, the transfer hopper 351, the material transfer hopper 54, the finished product hoppers 371 and 372, and the defective product hopper to control the discharge of the internal materials. Since the pharmaceutical powder used for the flash beads has the characteristics of being flammable and explosive, like the pneumatic valve plate 353 and the pneumatic vibration conveying component, the above valves all adopt the pneumatic drive mode, avoiding the dangers caused by the sparks, electric arcs, electric leakage, electric short circuits, etc. of the electric drive device.

[0080] The powder mixing unit 1, the first mixing unit 2, the second mixing unit 3, the drying unit 4, the first material transfer device 501, the second material transfer device 502 and the third material transfer device 503 are all connected to the control system of the mixing and blending production line for control, so as to realize continuous and automatic production under the overall control of the control system.

[0081] The partition space for setting the powder mixing unit 1, the first mixing unit 2, the rotary mixing sub-unit 32 and the drying unit 4 is generally physically separated by a wall or a partition board, which can avoid the cross-influence of dust, impurities, etc. in adjacent spaces, and can also block and control the spread of abnormalities when an abnormal situation occurs in a certain partition space, which is also necessary for the safe production of the fireworks industry. The first channel 11, the second channel 21 and the third channel 31 are pipes with openings at both ends arranged on the wall or the partition board, and in order to facilitate the addition of materials from the inlet of the pipe, the inlets of the first channel 11, the second channel 21 and the third channel 31 are all in the shape of a flared mouth.

[0082] The present application also provides a method for mixing flash beads, which is used for the above-mentioned flash bead automatic mixing and blending production line, and includes:

[0083] S1. Workers respectively add the pharmaceutical powder and the bead cores into the corresponding powder storage barrels 121 and bead core barrels 341;

[0084] S2. Input the functional powder layer mixing instruction through the control system and start the powder mixing unit 1;

[0085] S3. The pharmaceutical powder in the powder storage barrel 121 is negatively pressure conveyed into the first weighing scale 122, and the first weighing scale 122 weighs and discharges the corresponding weight of the pharmaceutical powder according to the instruction and falls into the material transfer hopper 54 of the first material transfer device 501 in the powder mixing unit 1;

[0086] S4. The first material transfer device 501 moves in sequence to pick up the powder materials weighed and discharged by each powder dispensing device 12, and finally moves to the first channel 11. The manipulator 53 moves the material transfer hopper 54 to the entrance of the first channel 11 and discharges the pharmaceutical powder materials in the material transfer hopper 54.

[0087] S5. The pharmaceutical powder materials entering the first channel 11 fall from the outlet of the first channel 11 into the paddle mixer 22 of the first mixing unit 2. The paddle mixer 22 is started to uniformly stir and mix the pharmaceutical powder materials into a powder mixture.

[0088] S6. The bead core adding device 34 of the rotary mixing sub-unit 32 for mixing the powder mixture is started. The bead cores in the bead core barrel 341 are negatively pressure transported into the bead core hopper 342. The pneumatic vibration conveying assembly sends the bead cores in the bead core hopper 342 into the second weighing scale 343. After the bead cores entering the second weighing scale 343 reach the set weight, the pneumatic vibration conveying assembly stops. The material transfer device 5 moves to the second weighing scale 343. The manipulator 53 drives the material transfer hopper 54 to pick up the bead cores discharged by the second weighing scale 343 and then moves to the transfer hopper 351, and puts the bead cores into the transfer hopper 351. The pneumatic vibration conveying assembly sends the bead cores in the transfer hopper 351 into the third weighing scale 352. The pneumatic valve plate 353 is opened to send the bead cores into the rotary mixer 36.

[0089] S7. The second material transfer device 502 in the first mixing unit 2 moves to the paddle mixer 22. The manipulator 53 drives the material transfer hopper 54 to pick up the powder mixture discharged by the paddle mixer 22 and then moves to the second channel 21. The manipulator 53 moves the material transfer hopper 54 to the entrance of the second channel 21 and discharges the powder mixture in the material transfer hopper 54.

[0090] S8. The third material transfer device 503 moves to pick up the powder mixture falling out from the outlet of the second channel 21, moves to the transfer hopper 351, and puts the powder mixture into the transfer hopper 351.

[0091] In another embodiment, a material distribution device 6 is provided in the second mixing unit 3. At this time, the powder mixture falling out from the outlet of the second channel 21 first falls into the distribution hopper 61 of the material distribution device 6. The moving assembly of the material distribution device 6 moves and drives the distribution hopper 61 to the rotary mixing sub-unit 32 that needs to use the powder mixture, and then the third material transfer device 503 of the rotary mixing sub-unit 32 picks up the powder mixture and puts the powder mixture into the transfer hopper 351.

[0092] S9. The rotary mixer 36 is started, and the pneumatic vibrating conveying assembly feeds the powder mixture in the transfer hopper 351 into the third weighing scale 352. After the powder mixture entering the third weighing scale 352 reaches the weight of the current batch, the pneumatic vibrating conveying assembly stops, and the pneumatic valve plate 353 opens to add the powder mixture in the third weighing scale 352 to the rotary mixer 36;

[0093] S10. The rotary mixer 36 continues to rotate, and the powder mixture entering the rotary mixer 36 is evenly dispersed to coat the bead core. The solvent adding device 33 simultaneously sprays high-pressure atomized alcohol or water so that the powder mixture coated on the bead core adheres and does not fall off;

[0094] S11. The third weighing scale 352 repeatedly weighs the powder mixture and adds it to the rotary mixer 36 until all the powder mixture is put in. The rotary mixer 36 continues to rotate until the powder mixture is completely coated and forms pre-mixed particles;

[0095] S12. The third transfer device 503 moves below the rotary mixer 36, and the rotary mixer 36 flips. The manipulator 53 drives the transfer hopper 54 to pick up the pre-mixed particles discharged from the rotary mixer 36;

[0096] S13. The manipulator 53 drives the transfer hopper 54 to move to the screening device 37 and put in the pre-mixed particles. The screening device 37 screens the put-in pre-mixed particles. The pre-mixed particles with qualified external dimensions enter the finished product hopper 371, and those with unqualified external dimensions enter the defective product hopper 372. After the manipulator 53 drives the transfer hopper 54 to pick up the pre-mixed particles in the finished product hopper 371 and then put them back into the transfer hopper 351, the pre-mixed particles are weighed by the third weighing scale 352 and then added back to the rotary mixer 36;

[0097] S14. According to the weighed quantity of the pre-mixed particles, the system calculates the required weight of the ignition powder and issues an instruction for layer mixing of the ignition powder to the powder mixing unit 1;

[0098] S15. According to the instruction, the powder mixing unit 1 repeats steps S3 - S7, S9 - S13, that is:

[0099] The pharmaceutical powder in the powder storage barrel 121 is negatively pressure conveyed into the first weighing scale 122, and the first weighing scale 122 weighs and discharges the set weight of the pharmaceutical powder and falls into the transfer hopper 54 of the first transfer device 501;

[0100] The first transfer device 501 sequentially moves and picks up the pharmaceutical powder weighed and discharged by each powder mixing device 12, and finally moves to the first channel 11. The manipulator 53 moves the transfer hopper 54 to the entrance of the first channel 11 and discharges the pharmaceutical powder in the transfer hopper 54;

[0101] The powder material entering the first channel 11 falls into the paddle mixer 22 from the outlet of the first channel 11. The paddle mixer 22 is started to evenly stir and mix the pharmaceutical powder material into a powder mixture.

[0102] The second material transfer device 502 moves to the paddle mixer 22. The manipulator 53 drives the material transfer hopper 54 to pick up the powder mixture discharged from the paddle mixer 22 and then moves to the second channel 21. The manipulator 53 moves the material transfer hopper 54 to the inlet of the second channel 21 and discharges the powder mixture in the material transfer hopper 54.

[0103] The third material transfer device 503 moves and picks up the powder mixture falling out from the outlet of the second channel 21, moves to the transfer hopper 351, and puts the powder mixture into the transfer hopper 351.

[0104] The rotary mixer 36 is started. The pneumatic vibration conveying component feeds the powder mixture in the transfer hopper 351 into the third weighing scale 352. When the powder mixture entering the third weighing scale 352 reaches the weight of the current feeding, the pneumatic vibration conveying component stops, the pneumatic valve plate 353 opens, and the powder mixture in the third weighing scale 352 is added to the rotary mixer 36.

[0105] The rotary mixer 36 continues to rotate. The powder mixture entering the rotary mixer 36 is evenly dispersed and coated on the premixed particles. The solvent adding device 33 simultaneously sprays high-pressure atomized alcohol or water to make the powder mixture coated on the premixed particles adhere and not fall off.

[0106] The third weighing scale 352 repeats weighing the powder mixture and adding it to the rotary mixer 36 until all the powder mixture is discharged. The rotary mixer 36 continues to rotate until the powder mixture has completely coated the premixed particles and formed mixed particulate matter.

[0107] The third material transfer device 503 moves below the rotary mixer 36. The rotary mixer 36 is turned over. The manipulator 53 drives the material transfer hopper 54 to pick up the mixed particulate matter discharged from the rotary mixer 36.

[0108] The third material transfer device 503 moves to the inlet of the third channel 31. The manipulator 53 drives the material transfer hopper 54 to put the mixed particulate matter into the third channel 31.

[0109] S16. The mixed particulate matter entering the third channel 31 enters the drying unit 4 from the outlet of the third channel 31 and is dried and formed into bright bead particle products.

[0110] Based on the disclosure and teachings of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims

1. An automated mixing production line for flash beads, characterized in that, Comprising: A powder blending unit (1) which outputs after weighing various pharmaceutical powders for flash beads; A first mixing unit (2) connected to the powder blending unit (1) through a first channel (11), the first mixing unit (2) receiving the pharmaceutical powders output by the powder blending unit (1) and uniformly mixing them into a powder mixture and then outputting; A second mixing unit (3) connected to the first mixing unit (2) through a second channel (21), the second mixing unit (3) comprising a plurality of independent rotary mixing sub-units (32), the rotary mixing sub-units (32) mixing and coating the bead cores, solvents and the powder mixture output by the first mixing unit (2) received to form mixed particulate matter and then outputting; A drying unit (4) connected to the rotary mixing sub-unit (32) through a third channel (31), the drying unit (4) receiving the mixed particulate matter output by the rotary mixing sub-unit (32) and drying it to obtain flash bead particles; Wherein, the powder blending unit (1), the first mixing unit (2), the rotary mixing sub-unit (32) and the drying unit (4) are respectively located in adjacent partition spaces, and a first material transfer device (501), a second material transfer device (502) and a third material transfer device (503) are respectively provided in the powder blending unit (1), the first mixing unit (2) and the rotary mixing sub-unit (32), the first material transfer device (501) cooperating with the first channel (11), the second material transfer device (502) cooperating with the second channel (21), and the third material transfer device (503) cooperating with the third channel (31) to convey materials within and between different partition spaces so as to realize the continuous mixing and production of flash beads; The first material transfer device (501), the second material transfer device (502) and the third material transfer device (503) each comprise a traction assembly (51) and a moving seat (52), a manipulator (53) is provided on the moving seat (52), a material transfer hopper (54) is provided on the manipulator (53), the traction assembly (51) drives the moving seat (52) to move, and the manipulator (53) drives the material transfer hopper (54) to move so as to realize the picking and conveying of materials; The rotary mixing sub-unit (32) comprises a solvent adding device (33), a bead core adding device (34), a powder mixture adding device, a rotary mixer (36) and a screening device (37); The bead core adding device (34) comprises a bead core barrel (341), a bead core hopper (342) and a second weighing scale (343), the bead cores in the bead core barrel (341) are conveyed to the bead core hopper (342) by negative pressure, and the outlet of the bead core hopper (342) is communicated with the inlet of the second weighing scale (343) through a pneumatic vibrating conveying assembly, and the bead cores enter the second weighing scale (343) and are discharged after weighing; The powder mixture adding device includes a transfer hopper (351) and a third weighing scale (352). The outlet of the transfer hopper (351) is communicated with the inlet of the third weighing scale (352) through a pneumatic vibration conveying assembly. A pneumatic valve plate (353) is provided at the outlet of the third weighing scale (352). The pneumatic valve plate (353) can open or close the outlet of the third weighing scale (352). The opening direction of the pneumatic valve plate (353) after opening faces the rotary mixer (36).

2. The automatic mixing production line for flash beads according to claim 1, wherein, The powder blending unit (1) includes a plurality of powder blending devices (12). The powder blending device (12) includes a powder storage barrel (121) and a first weighing scale (122). The pharmaceutical powder in the powder storage barrel (121) is transported to the first weighing scale (122) by negative pressure, and the pharmaceutical powder is discharged after being weighed by the first weighing scale (122).

3. The automatic bright bead mixing production line according to claim 1, characterized in that, The first mixing unit (2) includes a paddle mixer (22), and the inlet of the paddle mixer (22) faces the outlet of the first channel (11).

4. An automated bright bead mixing production line according to claim 1, characterized in that, The rotary mixer (36) can rotate axially and swing up and down.

5. An automated bright bead mixing production line according to claim 1, characterized in that, The screening device (37) includes a vibrating screen. A finished product hopper (371) is provided at the discharge port of the vibrating screen, and a defective product hopper (372) is provided at the screen outlet of the vibrating screen.

6. A method for mixing flash beads, which is used for the flash bead automatic mixing production line according to any one of claims 1-5, characterized in that, It includes the following steps: S1. Add the pharmaceutical powder and the bead cores into the corresponding powder storage barrels (121) and bead core barrels (341) respectively; S2. Input the functional powder layer mixing and blending instruction and start the powder blending unit (1); S3. The pharmaceutical powder in the powder storage barrel (121) is transported into the first weighing scale (122) by negative pressure. The first weighing scale (122) weighs and discharges the pharmaceutical powder of the set weight and falls into the transfer hopper (54) of the first transfer device (501); S4. The first transfer device (501) moves in sequence to pick up the pharmaceutical powder weighed and discharged by each powder blending device (12), and finally moves to the first channel (11). The manipulator (53) moves the transfer hopper (54) to the inlet of the first channel (11) and discharges the pharmaceutical powder in the transfer hopper (54); S5. The pharmaceutical powder entering the first channel (11) falls from the outlet of the first channel (11) into the paddle mixer (22). The paddle mixer (22) is started to uniformly stir and mix the pharmaceutical powder into a powder mixture; S6. The bead core feeding device (34) of the rotary mixing sub-unit (32) of the mixed powder mixture is started, and the bead cores in the bead core barrel (341) are transported into the bead core hopper (342) under negative pressure. The pneumatic vibrating conveying assembly transports the bead cores in the bead core hopper (342) into the second weighing scale (343). After the bead cores entering the second weighing scale (343) reach the set weight, the pneumatic vibrating conveying assembly stops. The third material transfer device (503) moves to the second weighing scale (343), and the manipulator (53) drives the material transfer hopper (54) to pick up the bead cores discharged from the second weighing scale (343) and then moves to the transfer hopper (351), and puts the bead cores into the transfer hopper (351). The pneumatic vibrating conveying assembly transports the bead cores in the transfer hopper (351) into the third weighing scale (352), and the pneumatic valve plate (353) is opened to send the bead cores into the rotary mixer (36). S7. The second material transfer device (502) moves to the paddle mixer (22), and the manipulator (53) drives the material transfer hopper (54) to pick up the powder mixture discharged from the paddle mixer (22) and then moves to the second channel (21). The manipulator (53) moves the material transfer hopper (54) to the entrance of the second channel (21) and discharges the powder mixture in the material transfer hopper (54). S8. The third material transfer device (503) moves and picks up the powder mixture falling out from the outlet of the second channel (21), and moves to the transfer hopper (351) to put the powder mixture into the transfer hopper (351). S9. The rotary mixer (36) is started, and the pneumatic vibrating conveying assembly transports the powder mixture in the transfer hopper (351) into the third weighing scale (352). After the powder mixture entering the third weighing scale (352) reaches the weight of the current batch of feeding, the pneumatic vibrating conveying assembly stops, and the pneumatic valve plate (353) is opened to add the powder mixture in the third weighing scale (352) into the rotary mixer (36). S10. The rotary mixer (36) continues to rotate, and the powder mixture entering the rotary mixer (36) is evenly dispersed to coat the bead cores. The solvent feeding device (33) sprays high-pressure atomized alcohol or water at the same time to make the powder mixture coated on the bead cores adhere and not fall off. S11. The third weighing scale (352) repeatedly weighs the powder mixture and adds it into the rotary mixer (36) until all the powder mixture is discharged. The rotary mixer (36) continues to rotate until the powder mixture is completely coated to form premixed particles. S12. The third material transfer device (503) moves under the rotary mixer (36), the rotary mixer (36) is turned over, and the manipulator (53) drives the material transfer hopper (54) to pick up the premixed particles discharged from the rotary mixer (36). S13. The manipulator (53) drives the material transfer hopper (54) to move to the screening device (37) to put in the premixed particles. The screening device (37) screens the put-in premixed particles. The premixed particles with qualified external dimensions enter the finished product hopper (371), and those with unqualified external dimensions enter the defective product hopper (372). The manipulator (53) drives the material transfer hopper (54) to pick up the premixed particles in the finished product hopper (371) and then put them back into the transfer hopper (351). The premixed particles are weighed by the third weighing scale (352) and then added back to the rotary mixer (36). S14. According to the weighed quantity of the premixed particles, the control system calculates the weight of the ignition powder layer required and issues a mixing instruction for the ignition powder layer to the powder mixing unit (1). S15. The powder mixing unit (1) repeats steps S3 - S5, S7 - S12 according to the instruction to obtain the mixed particulate matter. The third material transfer device (503) moves below the rotary mixer (36). The rotary mixer (36) flips. The manipulator (53) drives the material transfer hopper (54) to pick up the mixed particulate matter discharged from the rotary mixer (36). The third material transfer device (503) moves to the entrance of the third channel (31). The manipulator (53) drives the material transfer hopper (54) to put the mixed particulate matter into the third channel (31). S16. The mixed particulate matter entering the third channel (31) enters the drying unit (4) from the outlet of the third channel (31) and is dried and formed into finished bright bead particles.

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