Firework raw material proportioning and mixing device

Abstract

The utility model relates to the technical field of fireworks and firecrackers manufacturing, especially to a fireworks raw material proportioning and mixing device. Including mixing material cylinder, controller, fixed box, stirring rod, motor one, driving gear and driven gear etc. The controller is fixedly installed at the front side of the mixing material cylinder, the fixed box is fixedly connected to the top of the mixing material cylinder, two stirring rods are rotatably connected inside the mixing material cylinder, the motor one is fixedly installed in the middle of the fixed box, the driving gear is connected to the output shaft of the motor one, the driven gears are connected to the upper ends of the two stirring rod rotating shafts, the driving gear is located between the two driven gears and is meshed with the driven gears. The utility model uses the spiral feeding rod to cooperate with the feeding pipeline to carry out mechanical quantitative feeding, and the pipeline is pre-filled by closing the baffle during use, so that the material is saturated to the outlet end, the initial state of each feeding is ensured to be consistent, the effects of avoiding manual weighing error, simplifying the batching process and preventing cross contamination of different nature raw materials are achieved.

Description

Technical Field

[0001] This utility model relates to the field of fireworks and firecrackers manufacturing technology, and in particular to a fireworks raw material proportioning and mixing device. Background Technology

[0002] In the production process of fireworks and firecrackers, the precise proportioning and uniform mixing of raw materials are the key factors that determine the product's ignition effect, safety, and batch consistency. Firework raw materials usually include a variety of powdered or granular components such as oxidizers, combustibles, and colorants. Their mixing must be carried out under strict isolation, explosion-proof, and cross-contamination prevention conditions.

[0003] Currently, most small and medium-sized fireworks manufacturers still rely on manual weighing in conjunction with open mixing tanks to complete the mixing operation. This is not only labor-intensive and inefficient, but also prone to batch-to-batch performance fluctuations due to weighing errors or uneven mixing. Although some companies have introduced a combination of electronic scales and mixers, each raw material still needs to be weighed separately before being poured into the mixing tank. This process is cumbersome, carries a high risk of cross-contamination, and cannot achieve continuous operation.

[0004] Therefore, it is necessary to design a mixing device for the proportioning of fireworks raw materials. Utility Model Content

[0005] In order to overcome the shortcomings of existing fireworks mixing methods that rely on manual weighing and have fragmented processes, this utility model provides a fireworks raw material proportioning and mixing device.

[0006] The technical implementation scheme of this utility model is as follows: a fireworks raw material mixing device, including a mixing cylinder, a controller, a fixed box, stirring rods, a first motor, a drive gear, a driven gear, a discharge valve, a feeding pipe, a feeding frame, a spiral feeding rod, and a second motor. The controller is fixedly installed on the front side of the mixing cylinder, and the fixed box is fixedly connected to the top of the mixing cylinder. Two stirring rods are rotatably connected inside the mixing cylinder. The first motor is fixedly installed in the middle of the fixed box. The output shaft of the first motor is connected to the drive gear. The upper ends of the rotating shafts of the two stirring rods are connected to driven gears. The drive gear is located between the two driven gears and meshes with each other. The discharge valve is connected to the bottom of the mixing cylinder. Multiple feeding pipes are connected and connected to the left and right sides of the mixing cylinder. A feeding frame is provided on the upper part of the outer side of each feeding pipe. A spiral feeding rod is rotatably connected inside each feeding pipe. Multiple second motors are fixedly installed on the left and right sides of the mixing cylinder. The output shafts of the second motors are all connected to the corresponding spiral feeding rods. The controller is electrically connected to the first motor and the second motor.

[0007] As a further preferred embodiment, it also includes baffles, connecting rods, elastic elements, electromagnets, and push rods. Multiple baffles are slidably installed on the left and right sides inside the mixing cylinder, and each baffle blocks the outlet of the corresponding feed pipe. The baffles on the same side are connected to each other by connecting rods. Elastic elements are connected between the baffles and the mixing cylinder, and the elastic elements are all wrapped around the connecting rods. Electromagnets are fixedly installed on the left and right sides of the upper part of the mixing cylinder. The electromagnets are electrically connected to the controller. The lower end of the armature inside the electromagnet is connected to a push rod, and the push rod is connected to the corresponding connecting rod. In the initial state, the electromagnet is in the de-energized state.

[0008] As a further preferred option, it also includes identification signs and dustproof plates. Each feed frame is equipped with an identification sign on its outer side, and multiple dustproof plates are fixedly installed on the left and right sides inside the mixing cylinder. The dustproof plates are all located inside the corresponding elastic element.

[0009] As a further preferred option, it also includes foot pads, with multiple foot pads provided at the bottom of the mixing cylinder.

[0010] As a further preferred option, motor one, motor two, and electromagnet are all equipped with protective covers for sealing and protection.

[0011] As a further preferred option, the lower end of the baffle is shaped like a sharp blade. Beneficial effects

[0012] 1. This utility model uses a spiral feeder in conjunction with a feeding pipe for mechanical quantitative feeding. During use, the pipe is pre-filled by closing the baffle to saturate the material to the outlet end, ensuring that the starting state of each feeding is consistent. This achieves the effects of avoiding manual weighing errors, simplifying the batching process, and preventing cross-contamination of raw materials with different properties.

[0013] 2. This utility model controls the electromagnet to de-energize and drive the baffle to close downwards after the feeding is completed. The baffle's sharp blade-shaped lower end cuts off and scrapes away the residual material at the outlet of the feeding pipe. At the same time, the feeding channel is kept sealed during the mixing stage, which improves the integrity of the material falling and the accuracy of the proportioning, and effectively prevents dust or particles from flowing back into the pipe during the mixing process. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a three-dimensional structural diagram of the motor, driving gear, and driven gear components of this utility model.

[0016] Figure 3 This is a three-dimensional structural diagram of the mixing cylinder, fixing box, and feeding frame of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the spiral feed rod, motor 2, and signage components of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the mixing cylinder, baffle, and dustproof plate of this utility model.

[0019] Figure 6 This is a three-dimensional structural diagram of the elastic element, electromagnet, and push rod components of this utility model.

[0020] Figure 7 This is a three-dimensional structural diagram of the connecting rod, elastic element, and feed pipe of this utility model.

[0021] The components are as follows: 1-mixing cylinder, 2-controller, 3-fixed box, 31-stirring rod, 32-motor one, 33-drive gear, 34-driven gear, 35-discharge valve, 4-feeding pipe, 41-feeding frame, 42-screw feeder, 43-motor two, 44-signboard, 5-baffle, 51-connecting rod, 52-elastic element, 53-electromagnet, 54-push rod, 6-dustproof plate, 7-foot pad. Detailed Implementation

[0022] Example: A fireworks raw material proportioning and mixing device, such as Figures 1-7 As shown, the system includes a mixing cylinder 1, a controller 2, a fixed box 3, stirring rods 31, a first motor 32, a drive gear 33, a driven gear 34, a discharge valve 35, a feed pipe 4, a feed frame 41, a screw feeder 42, and a second motor 43. The controller 2 is fixedly installed on the front side of the mixing cylinder 1, and the fixed box 3 is fixedly connected to the top of the mixing cylinder 1. Two stirring rods 31 are rotatably connected inside the mixing cylinder 1. The first motor 32 is fixedly installed in the middle of the fixed box 3 by bolts. The drive gear 33 is connected to the output shaft of the first motor 32. The upper ends of the shafts of both stirring rods 31 are connected to... A driven gear 34 is connected to the mixing cylinder 1. The driving gear 33 is located between the two driven gears 34 and meshes with them. A discharge valve 35 is connected to the bottom of the mixing cylinder 1. Two feed pipes 4 are connected and connected to the left and right sides of the mixing cylinder 1. A feed frame 41 is provided on the upper part of the outer side of each feed pipe 4. A screw feed rod 42 is rotatably connected inside each feed pipe 4. Two motors 43 are fixedly installed on the left and right sides of the mixing cylinder 1. The output shaft of each motor 43 is connected to the corresponding screw feed rod 42. The controller 2 is electrically connected to both motors 32 and motors 43.

[0023] like Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, it also includes baffles 5, connecting rods 51, elastic elements 52, electromagnets 53, and push rods 54. Two baffles 5 are slidably provided on the left and right sides inside the mixing cylinder 1. The baffles 5 block the outlet of the corresponding feed pipe 4, and the lower end of the baffles 5 is sharp. The baffles 5 on the same side are connected to each other by connecting rods 51. Elastic elements 52 are connected between the baffles 5 and the mixing cylinder 1, and the elastic elements 52 are all wrapped around the connecting rods 51. Electromagnets 53 are fixedly installed on the left and right sides of the upper part of the mixing cylinder 1. The electromagnets 53 are electrically connected to the controller 2. The lower end of the armature inside the electromagnet 53 is connected to the push rod 54. The push rod 54 is connected to the corresponding connecting rod 51. In the initial state, the electromagnets 53 are de-energized. The motor 1 32, motor 2 43 and the outside of the electromagnet 53 are all provided with protective covers for enclosure protection to ensure safe operation of the equipment in flammable and explosive environments.

[0024] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, it also includes an identification plate 44 and a dustproof plate 6. Each feeding frame 41 is equipped with an identification plate 44 on its outer side, which can indicate the corresponding raw material type, avoid the risk of incorrect or mixed feeding when manually feeding, and improve the accuracy of feeding operation. Multiple dustproof plates 6 are fixedly installed on the left and right sides inside the mixing cylinder 1. The dustproof plates 6 are all located inside the corresponding elastic element 52 to reduce dust accumulation and ensure smooth movement of the baffle 5.

[0025] like Figure 1 As shown, it also includes foot pads 7. Multiple foot pads 7 are provided at the bottom of the mixing cylinder 1 to improve the stability of the device, reduce operating vibration, and prevent the whole machine from slipping during operation.

[0026] Before using this device, it is essential to perform a pre-filling operation on the pipeline: add the target raw material into the corresponding feed box 41. At this time, the electromagnet 53 is de-energized, and the baffle 5 is tightly sealed at the outlet of the feed pipeline 4. Then, start the motor 43 to drive the spiral feed rod 42 to continuously rotate, pushing the raw material forward along the horizontal section of the feed pipeline 4 until the L-shaped pipeline is completely filled. The material at the end adheres tightly to the baffle 5 to form a stable column, ensuring that the starting state of each quantitative feed is consistent. After the pre-filling is completed, stop the motor 43, and the pipeline enters a saturated standby state.

[0027] Next, the corresponding material is added to each feed pipe 4 and pre-filled. The feed frame 41 is equipped with an identification plate 44, which indicates the corresponding raw material type to avoid incorrect addition during manual feeding, which could lead to problems with the mixing ratio. At the same time, it also ensures that components such as oxidants, combustibles, and colorants are completely isolated in the conveying path. Then, the operator sets the running time of each motor 43 on the controller 2 according to the formula requirements.

[0028] During the formal mixing process, controller 2 energizes electromagnet 53, attracting the armature inside electromagnet 53 and driving push rod 54 upward, thereby causing baffle 5 to detach from the outlet of feed pipe 4, opening the feed channel. Immediately afterward, controller 2 starts the corresponding motor 43 for the preset running time. Screw feed rod 42 pushes a fixed volume of material horizontally into the mixing cylinder 1. When screw feed rod 42 stops after the preset time, it also indicates that the quantitative feeding is completed. Controller 2 then de-energizes electromagnet 53, and baffle 5 moves downward to the outlet of feed pipe 4 under the elastic force of elastic element 52. Its sharp blade at the lower end scrapes and cuts off any small amount of material that may be retained, ensuring complete material discharge and completely sealing the channel to prevent dust or particles from flowing back into the pipe during the mixing process.

[0029] After the baffle 5 is closed, the controller 2 starts the motor 32. The output shaft of the motor 32 drives the drive gear 33 to rotate. The drive gear 33 simultaneously meshes and drives the driven gears 34 on both sides to rotate in opposite directions, thereby driving the two stirring rods 31 to rotate synchronously in opposite directions. Under the dual-axis counter-shearing action, various raw materials are quickly and evenly mixed. The dustproof plate 6 installed inside the mixing cylinder 1 is located inside the elastic element 52 to prevent dust from affecting the reset performance of the elastic element 52, while reducing dust accumulation and ensuring smooth movement of the baffle 5. Finally, after mixing, the operator can take the material through the discharge valve 35 set at the bottom of the mixing cylinder 1. The entire operation process is controlled by mechanical quantitative feeding and automatic opening and closing linkage of the baffle 5, eliminating the need for manual weighing and open feeding, which significantly improves the proportioning accuracy, operational safety and production efficiency.

Claims

1. A device for mixing and proportioning raw materials for fireworks, characterized in that: The system includes a mixing cylinder (1), a controller (2), a fixed box (3), stirring rods (31), a motor (32), a drive gear (33), a driven gear (34), a discharge valve (35), a feed pipe (4), a feed frame (41), a screw feeder (42), and a second motor (43). The controller (2) is fixedly installed on the front side of the mixing cylinder (1), and the fixed box (3) is fixedly connected to the top of the mixing cylinder (1). Two stirring rods (31) are rotatably connected inside the mixing cylinder (1). The motor (32) is fixedly installed in the middle of the fixed box (3). The drive gear (33) is connected to the output shaft of the motor (32). The upper ends of the rotating shafts of the two stirring rods (31) are connected to... There is a driven gear (34), and the driving gear (33) is located between the two driven gears (34) and meshes with each other. The bottom of the mixing cylinder (1) is connected to a discharge valve (35). Multiple feed pipes (4) are connected and connected to the left and right sides of the mixing cylinder (1). Feed frames (41) are provided on the upper part of the outer side of each feed pipe (4). A spiral feeding rod (42) is rotatably connected inside each feed pipe (4). Multiple motors (43) are fixedly installed on the left and right sides of the mixing cylinder (1). The output shaft of each motor (43) is connected to the corresponding spiral feeding rod (42). The controller (2) is electrically connected to both motor (32) and motor (43).

2. A fireworks raw material proportioning and mixing device according to claim 1, characterized in that: It also includes baffles (5), connecting rods (51), elastic elements (52), electromagnets (53) and push rods (54). Multiple baffles (5) are slidably provided on the left and right sides inside the mixing cylinder (1). The baffles (5) block the outlet of the corresponding feed pipe (4). The baffles (5) on the same side are connected to each other by connecting rods (51). The baffles (5) and the mixing cylinder (1) are connected by elastic elements (52), and the elastic elements (52) are all wrapped around the connecting rods (51). Electromagnets (53) are fixedly installed on the left and right sides of the upper part of the mixing cylinder (1). The electromagnets (53) are electrically connected to the controller (2). The lower end of the armature inside the electromagnet (53) is connected to a push rod (54). The push rods (54) are all connected to the corresponding connecting rods (51). In the initial state, the electromagnets (53) are in the de-energized state.

3. A fireworks raw material proportioning and mixing device according to claim 2, characterized in that: It also includes a sign (44) and a dustproof plate (6). Each feed box (41) has a sign (44) on its outside. Multiple dustproof plates (6) are fixedly installed on the left and right sides inside the mixing cylinder (1). The dustproof plates (6) are all located inside the corresponding elastic element (52).

4. A fireworks raw material proportioning and mixing device according to claim 3, characterized in that: It also includes foot pads (7), and multiple foot pads (7) are provided at the bottom of the mixing cylinder (1).

5. A fireworks raw material proportioning and mixing device according to claim 4, characterized in that: The outer sides of motor 1 (32), motor 2 (43) and electromagnet (53) are all equipped with protective covers for sealing and protection.

6. A fireworks raw material proportioning and mixing device according to claim 5, characterized in that: The lower end of the baffle (5) is sharp and pointed.

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