A fireworks powder and powder mixing device

Abstract

The present invention provides a fireworks charge and powder mixing device, comprising a plurality of mixing bins, each of which is connected in sequence; a feed port is provided at one end of the mixing bin, and a discharge port is provided at the other end of the mixing bin, the discharge port of the mixing bin at the upper level is detachably connected to the feed port of the mixing bin at the next level adjacent thereto, and a mixing structure is provided in the mixing bin that can mix the fireworks charge that falls into the mixing bin from the feed port of the mixing bin. The fireworks charge and powder mixing device is formed by forming a plurality of mixing bins connected end to end, so that the movement path of the fireworks charge is extended during the mixing process, and the amount of fireworks charge per unit volume can be reduced when the total amount of fireworks charge is constant, effectively improving the safety during the mixing process. The present invention is applied to the field of fireworks production equipment.

Description

Technical Field

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

[0002] The production process of fireworks beads is currently in a manual + semi-automatic state. When mixing the ingredients and medicine of the beads, it is mainly done by weighing the single medicine with a scale manually, and then mixing it with a medicine mixing machine. This is an extremely dangerous job. In this process, the amount of medicine mixed each time is large, the labor intensity of the workers is high, the degree of automation is low, and the safety risk is high. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a fireworks powder and charge mixing device, which can achieve multi-stage mixing and effectively improve production efficiency and product quality.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention provides a device for mixing fireworks powder and powder, the technical solution adopted by the device is:

[0005] A fireworks charge and powder mixing device comprises a plurality of mixing bins which are connected in sequence; a feed port is provided at one end of the mixing bin and a discharge port is provided at the other end; the discharge port of the mixing bin at the upper level is detachably connected to the feed port of the mixing bin at the next level adjacent thereto; a mixing structure is provided in the mixing bin which can mix the fireworks charge falling into the mixing bin from the feed port of the mixing bin.

[0006] As a further improvement of the above technical solution, the mixing structure includes a stirring shaft, a mixing plate, a screen and a baffle;

[0007] The screen is fixedly connected in the corresponding mixing bin, one end of the baffle is hinged on the inner wall of the mixing bin at one end near the bottom of the screen, and the other end of the baffle can abut against the inner wall of the mixing bin at the other end near the bottom of the screen during rotation;

[0008] A baffle driving mechanism connected to the baffle in transmission is provided on the outer wall of the mixing bin;

[0009] One end of the stirring shaft is located outside the corresponding mixing bin, and the other end of the stirring shaft passes through the top of the corresponding mixing bin and is located near the screen in the corresponding mixing bin. The mixing plate is fixedly connected to the end of the stirring shaft located in the mixing bin.

[0010] As a further improvement of the above technical solution, the mixing plate is a flexible plate.

[0011] As a further improvement of the above technical solution, the fireworks powder and powder mixing device also includes a driving system, and the end of the stirring shaft in each mixing structure located outside the mixing bin is connected to the driving system through a transmission structure.

[0012] As a further improvement of the above technical solution, the fireworks powder and the powder mixing device also includes a control system, and the mixing drive system and the baffle drive mechanism are both electrically connected to the control system.

[0013] As a further improvement of the above technical solution, the mixing bin, the mixing plate, the screen and the baffle are all made of anti-static materials.

[0014] As a further improvement of the above technical solution, an electrostatic detector, an electrostatic eliminator, a temperature sensor, a camera and a fire sprinkler system are provided at the feed port of each mixing bin.

[0015] Beneficial technical effects of the present invention:

[0016] The present invention forms a fireworks charge and powder mixing device through a plurality of mixing bins connected end to end, so that the fireworks charge can extend the movement path of the fireworks charge during the mixing process, and can reduce the amount of fireworks charge per unit volume under the condition of a certain total amount of fireworks charge, realize mixing of small amount of charge and powder in continuous flow, achieve good mixing effect, and effectively improve the safety of the mixing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of this embodiment;

[0018] Figure 2 It is an enlarged schematic diagram of the mixture structure. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present disclosure more clear, the present invention is further described in detail in combination with specific embodiments and according to the accompanying drawings. It should be noted that in the drawings or descriptions, the undescribed contents and some English abbreviations are the contents known to ordinary technicians in the relevant technical field. Some specific parameters given in this embodiment are only for demonstration, and the values ​​can be changed to appropriate values ​​accordingly in different real-time modes.

[0020] like Figure 1-2A fireworks charge and powder mixing device shown includes a plurality of mixing bins 1, each of which is connected in sequence; a feed port 11 is provided at one end of the mixing bin 1, and a discharge port 12 is provided at the other end of the mixing bin 1, the discharge port of the mixing bin at the upper level is detachably connected to the feed port of the mixing bin at the next level adjacent thereto, and a mixing structure is provided in the mixing bin 1 to mix the fireworks charge falling into the mixing bin 1 from the feed port 11 of the mixing bin 1. Two adjacent mixing bins are fixed by welding or bolting, and a fillet weld or other similar structure is provided at the connection gap between the two adjacent mixing bins to improve the stability of the connection between the two adjacent mixing bins.

[0021] A fireworks charge and powder mixing device is formed by a plurality of mixing bins 1 connected end to end, so that the fireworks charge moving path is extended during the mixing process, achieving a structure similar to a long stream of water, and can reduce the amount of fireworks charge per unit volume when the total amount of fireworks charge is constant, effectively improving the safety of the mixing process.

[0022] Specifically, the mixing structure includes a stirring shaft 21, a mixing plate 22, a screen 23 and a baffle 24, wherein the mixing plate 22 is a flexible plate. One end of the stirring shaft 21 is located outside the corresponding mixing bin 1, and the other end of the stirring shaft 21 passes through the top of the corresponding mixing bin 1 and is located in the corresponding mixing bin 1 near the screen 23. The mixing plate 22 is fixedly connected to one end of the stirring shaft 21 located in the mixing bin 1, and the stirring shaft 21 is rotatably connected to the wall of the corresponding mixing bin 1 through a bearing. The screen 23 is fixedly connected in the corresponding mixing bin 1 and close to the mixing plate 22. One end of the baffle 24 is rotatably connected to the inner wall of the mixing bin 1 at one end near the bottom of the screen 23, and the other end of the baffle 24 can abut against the inner wall of the mixing bin 1 at the other end near the bottom of the screen 23 during the rotation process, wherein the movable end of the baffle 24 when the baffle 24 is horizontal can also have a small gap with the corresponding mixing bin 1. The outer wall of the mixing bin 1 is provided with a baffle driving mechanism which is transmission-connected to the baffle 24, but the baffle driving mechanism is not shown. The baffle driving mechanism is an electric or pneumatic driving mechanism, and the baffle 24 is rotationally connected to the inner wall of the mixing bin 1 through a rotating shaft 25, and the output end of the baffle driving mechanism is fixedly connected to the rotating shaft 25. The rotating shaft 25 rotates under the drive of the baffle driving mechanism, thereby driving the baffle 24 to rotate.

[0023] When the fireworks charge falls into the mixing bin 1 from the feed port 11, the movable end of the baffle 24 is in contact with the inner wall of the mixing bin 1, and the fireworks charge falls on the screen 23 and stops falling under the action of the baffle 24. Then the stirring shaft 21 rotates to drive the mixing plate 22 to rotate, thereby stirring and mixing the fireworks charge on the screen 23; when the stirring and mixing reaches a preset time, the baffle driving mechanism starts, driving the baffle 24 to rotate, so that the movable end of the baffle 24 is separated from the inner wall of the mixing bin 1, and then the stirred and mixed fireworks charge falls down and falls into the next mixing bin.

[0024] The fireworks charge and powder mixing device also includes a control system, wherein the control system is not shown. The stirring shaft 21 in each mixing structure is connected to the drive system at one end outside the mixing bin 1 through a transmission structure, and the mixing drive system and the baffle drive mechanism are electrically connected to the control system. The control system can be a PLC or other electronic control system, which is used to realize the automation of the fireworks charge and powder mixing device during the mixing process. There are two mixing bins 1 in this embodiment, and the drive system includes a transmission shaft 31 and a drive motor not shown in the figure, and the output end of the drive motor is connected to the middle of the transmission shaft 31. The top of the transmission shaft 31 is connected to the top of the stirring shaft 21 on the first mixing bin. Specifically, the top of the transmission shaft 31 is connected to the corresponding end of the stirring shaft 21 through a transmission structure, and the transmission structure includes a connecting shaft 32, a transmission belt 33, a driving wheel 34 and a driven wheel 35; one end of the connecting shaft 32 is connected to the corresponding end of the transmission shaft 31 through a coupling, the driving wheel 34 is fixedly connected to the other end of the connecting shaft 32, and the driven wheel 35 is fixedly connected to the corresponding end of the corresponding stirring shaft 21, and the driving wheel 34 and the driven wheel 35 are connected through a transmission belt 33. The bottom end of the transmission shaft 31 is connected to the top of the stirring shaft 21 on the second mixing bin through a coupling. Using one set of motors to drive two sets of mixing structures at the same time can not only keep the stirring force of the two mixings the same, thereby maintaining the mixing effect of the fireworks powder, but also effectively reduce energy consumption.

[0025] Preferably, the mixing bin 1, the mixing plate 22, the screen 23, and the baffle 24 are all made of antistatic materials to prevent the fireworks powder from agglomerating under the action of static electricity and causing safety hazards.

[0026] As a further improvement of the above technical solution, each mixing silo is provided with a static detector, static eliminator, temperature sensor, camera and fire sprinkler system (not shown in the figure) at the feed port. The static sensor is used to measure the static value in the mixing silo 1 during the mixing process, and the static eliminator is used to eliminate static electricity when the static value in the mixing silo 1 is too high; the temperature sensor is used to measure the temperature in the mixing silo 1 during the mixing process, and the fire sprinkler system is used to reduce the temperature of the conveyor belt when the temperature in the mixing silo 1 is too high; the camera is used for the staff to monitor the real-time situation of the mixing process.

[0027] The above includes the description of the preferred embodiment of the present invention, which is to explain the technical features of the present invention in detail, and is not intended to limit the invention to the specific form described in the embodiment. Other modifications and variations based on the main idea of ​​the present invention are also protected by this patent. The main idea of ​​the present invention is defined by the claims, not by the specific description of the embodiment.

Claims

1. A device for mixing fireworks powder and explosives, characterized in that: It comprises a plurality of mixing bins, each of which is connected in sequence; a feeding port is provided at one end of the mixing bin, and a discharging port is provided at the other end of the mixing bin, the discharging port of the mixing bin at the upper level is detachably connected to the feeding port of the mixing bin at the next level adjacent thereto, and a mixing structure is provided in the mixing bin, which can mix the fireworks powder falling into the mixing bin from the feeding port of the mixing bin; The mixing structure includes a stirring shaft, a mixing plate, a screen and a baffle; The screen is fixedly connected in the corresponding mixing bin, one end of the baffle is hinged on the inner wall of the mixing bin at one end near the bottom of the screen, and the other end of the baffle can abut against the inner wall of the mixing bin at the other end near the bottom of the screen during rotation; A baffle driving mechanism connected to the baffle in transmission is provided on the outer wall of the mixing bin; One end of the stirring shaft is located outside the corresponding mixing bin, and the other end of the stirring shaft passes through the top of the corresponding mixing bin and is located near the screen in the corresponding mixing bin, and the mixing plate is fixedly connected to the end of the stirring shaft located in the mixing bin; When the fireworks charge falls into the mixing bin from the feed port, the movable end of the baffle is in contact with the inner wall of the mixing bin, and the fireworks charge falls on the screen and stops falling under the action of the baffle. Then the stirring shaft rotates to drive the mixing plate to rotate, stirring and mixing the fireworks charge on the screen. When the stirring and mixing reaches a preset time, the baffle driving mechanism starts to drive the baffle to rotate, so that the movable end of the baffle is separated from the inner wall of the mixing bin, so that the stirred and mixed fireworks charge falls and then falls into the next mixing bin. It also includes a driving system, and one end of the stirring shaft in each mixing structure located outside the mixing bin is connected to the driving system through a transmission structure; The driving system includes a transmission shaft and a driving motor. The output end of the driving motor is connected to the middle part of the transmission shaft. The transmission shaft is respectively connected to the stirring shaft located on each mixing bin. A group of driving motors drives each stirring shaft at the same time to keep the stirring force of each mixing bin the same.

2. The fireworks charge and powder mixing device according to claim 1, characterized in that: The mixing plate is a flexible plate.

3. The fireworks charge and powder mixing device according to claim 1, characterized in that: It also includes a control system, and the driving system and the baffle driving mechanism are both electrically connected to the control system.

4. The fireworks charge and powder mixing device according to claim 1, 2 or 3, characterized in that: The mixing bin, the mixing plate, the screen and the baffle are all made of antistatic materials.

5. The fireworks charge and powder mixing device according to any one of claims 1, 2 or 3, characterized in that: The feeding port of each mixing bin is equipped with static detector, static eliminator, temperature sensor, camera and fire sprinkler system.

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