Three-material mixing device for spraying decoration black powder
By combining a vibrating screen and a crushing device, the problems of static electricity and coarse powder during the mixing of black powder raw materials were solved, achieving efficient mixing and safe production, and improving the quality and safety of fireworks.
Patent Information
- Application Number
- CN202520292445.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In sparkler fireworks, static electricity is easily generated when black powder raw materials are mixed, and coarse powder affects quality. Existing equipment cannot effectively avoid static electricity and ensure uniform mixing.
A vibrating screen is used in combination with a crushing device and a feeding device. The crushing device finely crushes the black powder raw material, and the feeding device avoids direct contact between the material bucket and the crushing device. Insulating scrapers and grounding wires are installed to prevent static electricity. A weighing instrument is used to accurately add raw materials.
This technology enables uniform mixing and fine pulverization of black powder raw materials, improving product quality and enhancing production safety and ease of operation.
Smart Images

Figure CN223837330U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fireworks manufacturing technology, and in particular to a three-component mixing device for spraying black powder. Background Technology
[0002] Black powder is required for spray fireworks. Black powder is made by mechanically mixing potassium nitrate, charcoal, and sulfur. When mixing black powder, the raw materials need to be finely ground into powder. If the powder is too coarse, it will affect the quality of the subsequent products. In addition, the powder needs to be handled carefully during the mixing process to avoid static electricity and production accidents. Therefore, the filling barrel should be kept away from the mixing equipment to prevent friction or impact and avoid static electricity or sparks. Therefore, we propose a three-component mixing device for spray fireworks black powder. Utility Model Content
[0003] To overcome the shortcomings in the prior art, this utility model discloses a three-component mixing device for spraying black powder. This utility model achieves the purpose of efficiently mixing black powder raw materials by setting a crushing device and a feeding device on a vibrating screen.
[0004] To achieve the aforementioned objective, this utility model adopts the following technical solution:
[0005] A three-component mixing device for spraying black powder includes a vibrating screen, a crushing device, and a feeding device. A longitudinally arranged support plate is provided on one side of the vibrating screen, and a transversely arranged connecting plate is provided on the upper surface of the support plate. The crushing device is provided on the connecting plate and is located at the feed end of the vibrating screen. The feeding device is located on the other side of the vibrating screen. The black powder raw material is fed into the crushing device through the feeding device.
[0006] The vibrating screen has support legs distributed at its lower end, with each support leg arranged in an equidistant array at the lower end of the vibrating screen, and a valve is provided at the discharge end of the vibrating screen.
[0007] The crushing device includes a motor, a connecting shaft, scrapers, a connecting pipe, and a screen. The motor is mounted on the upper surface of the connecting plate, and the output shaft of the motor passes through the connecting plate. A coaxial connecting shaft is mounted on the output shaft of the motor. Scrapers are distributed on the lower side of the connecting shaft, and the scrapers are evenly distributed in an array on the side of the connecting shaft. The connecting shaft is mounted inside the connecting pipe, and the lower end of the connecting pipe is connected to the feed end of the vibrating screen. A screen is mounted inside the connecting pipe.
[0008] The upper end of the connecting pipe is provided with a material receiving funnel, and at least one screen is provided inside the connecting pipe. The screens are arranged in parallel, and the lower surface of the scraper abuts against the upper surface of the uppermost screen.
[0009] The scraper is made of a soft, elastic material and is an insulating material.
[0010] The feeding device includes a support plate and a material bucket. The support plate is longitudinally arranged on one side of the vibrating screen. The support plate has an inverted L-shaped structure. The outer surface of the support plate is provided with a T-shaped groove. A grounding wire is provided on the support plate. A connecting block is provided in the groove. The connecting block slides up and down along the support plate in the groove. One end of the connecting block is provided with a rotating shaft, which is located in the groove. The other end of the connecting block is provided with a fixing plate. A fixing seat is provided on the side of the material bucket facing the support plate. The fixing plate and the fixing seat are engaged.
[0011] A weighing device is provided at the lower end of the outer surface of the bearing plate, and the weighing device is located below the material bucket.
[0012] The black powder mixing device described in this utility model is highly practical and very convenient to use. By setting a crushing device on the vibrator, the black powder raw materials are finely crushed, and the three components of black powder are evenly mixed, improving the quality of black powder. By setting a feeding device, direct contact between the material bucket and the crushing device is avoided, preventing the generation of static electricity and improving production safety. By setting a weighing device on the feeding device, the raw materials can be added accurately, facilitating the preparation of different gunpowders. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0014] Figure 2 This is an enlarged view of point A in this utility model;
[0015] Figure 3 This is a schematic diagram showing the positional relationship between the motor, connecting shaft, and scraper of this utility model;
[0016] Figure 4 This is a cross-sectional view of the feeding device of this utility model;
[0017] In the diagram: 1. Vibrating screen; 2. Support leg; 3. Support plate; 4. Connecting plate; 5. Motor; 6. Receiving hopper; 7. Bearing plate; 8. Slide chute; 9. Weighing instrument; 10. Material bucket; 11. Connecting pipe; 12. Screen; 13. Connecting shaft; 14. Scraper; 15. Wire; 16. Fixed base; 17. Connecting block; 18. Rotating shaft; 19. Fixed plate. Detailed Implementation
[0018] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.
[0019] Combined with appendix Figures 1-4A three-component mixing device for spraying black powder includes a vibrating screen 1, a crushing device and a feeding device. A longitudinally arranged support plate 3 is provided on one side of the vibrating screen 1, and a transversely arranged connecting plate 4 is provided on the upper surface of the support plate 3. The crushing device is provided on the connecting plate 4. The crushing device is located at the feed end of the vibrating screen 1, and the feeding device is located on the other side of the vibrating screen 1. The black powder raw material is loaded into the crushing device through the feeding device.
[0020] The vibrating screen 1 has support legs 2 distributed at its lower end. Each support leg 2 is equidistantly arranged at the lower end of the vibrating screen 1. The discharge end of the vibrating screen 1 is equipped with a valve. The vibrating screen 1 is equipped with a metal plate for grounding to facilitate the discharge of static electricity.
[0021] The crushing device includes a motor 5, a connecting shaft 13, scrapers 14, a connecting pipe 11, and a screen 12. The motor 5 is located on the upper surface of the connecting plate 4. The output shaft of the motor 5 passes through the connecting plate 4. The connecting shaft 13 is coaxially arranged on the output shaft of the motor 5. Scrapers 14 are distributed on the lower side of the connecting shaft 13. The scrapers 14 are evenly distributed on the side of the connecting shaft 13. The connecting shaft 13 is located inside the connecting pipe 11. The lower end of the connecting pipe 11 is connected to the feed end of the vibrating screen 1. The screen 12 is located inside the connecting pipe 11.
[0022] The upper end of the connecting pipe 11 is provided with a receiving funnel 6, and at least one screen 12 is provided inside the connecting pipe 11. The screens 12 are arranged in parallel. The lower surface of the scraper 14 abuts against the upper surface of the uppermost screen 12. The scraper 14 squeezes the pre-treated black powder raw material through the screen 12 to complete the fine crushing of the black powder raw material.
[0023] The scraper 14 is made of a soft, elastic material and is an insulating material.
[0024] The feeding device includes a support plate 7 and a material bucket 10. The support plate 7 is longitudinally arranged on one side of the vibrating screen 1. The support plate 7 has an inverted L-shaped structure. The outer surface of the support plate 7 is provided with a T-shaped chute 8. The support plate 7 is provided with a grounding wire 15. A connecting block 17 is provided in the chute 8. The connecting block 17 slides up and down along the support plate 7 in the chute 8. One end of the connecting block 17 is provided with a rotating shaft 18, which is located in the chute 8. The other end of the connecting block 17 is provided with a fixing plate 19. The material bucket 10 is provided with a fixing seat 16 on the side facing the support plate 7. The fixing plate 19 is engaged with the fixing seat 16. The rotating shaft 18 rotates in the chute 8, which facilitates the flipping of the material bucket 10 and makes it easy to pour the black powder raw material in the material bucket 10 into the receiving funnel 6.
[0025] The lower end of the outer surface of the bearing plate 7 is provided with a weighing instrument 9, which is located below the material barrel 10. The weighing instrument 9 facilitates the weighing of black powder raw materials and the preparation of black powder.
[0026] The three-component mixing device for spray-painted black powder described in this embodiment involves loading pre-treated black powder raw materials into a material barrel 10 in batches during use. A weighing instrument 9 facilitates the weighing of the black powder raw materials and the preparation of black powder. After weighing a certain amount of raw materials, the material barrel 10 is pushed upwards along the support plate 7 to the upper horizontal end. Then, the raw materials in the material barrel 10 are poured into the receiving funnel 6. The rotating shaft 18 rotates in the sliding groove 8 to facilitate the tilting of the material barrel 10. The motor 5 is started, and the motor 5 drives the connecting shaft 13 to rotate, so that the scraper 14 squeezes the pre-treated black powder raw materials through the screen 12, completing the fine crushing of the black powder raw materials. After all three raw materials are loaded into the vibrating screen 1 through the crushing device, the vibrating screen 1 is turned on to complete the mixing of the raw materials. After the mixing is completed, the valve at the bottom of the vibrating screen 1 is opened to discharge and collect the black powder.
[0027] The parts of this utility model not described in detail are prior art. Although this utility model has been specifically shown and introduced in conjunction with preferred embodiments, there are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. However, those skilled in the art should understand that various changes in form and detail can be made to this utility model without departing from the spirit and scope of this utility model as defined by the appended claims, and all such changes shall be within the protection scope of this utility model.
Claims
1. A three-component mixing device for spray-painted black powder, comprising a moving screen (1), a crushing device, and a feeding device, characterized in that: A longitudinally arranged support plate (3) is provided on one side of the vibrating screen (1), and a transversely arranged connecting plate (4) is provided on the upper surface of the support plate (3). A crushing device is provided on the connecting plate (4). The crushing device is located at the feed end of the vibrating screen (1), and the feeding device is located on the other side of the vibrating screen (1). Black gunpowder raw materials are loaded into the crushing device through the feeding device.
2. The three-component mixing device for spraying black powder according to claim 1, characterized in that: The vibrating screen (1) has support legs (2) distributed at the lower end. Each support leg (2) is equidistantly arranged at the lower end of the vibrating screen (1). The discharge end of the vibrating screen (1) is equipped with a valve.
3. The three-component mixing device for spraying black powder according to claim 1, characterized in that: The crushing device includes a motor (5), a connecting shaft (13), a scraper (14), a connecting pipe (11), and a screen (12). The motor (5) is located on the upper surface of the connecting plate (4). The output shaft of the motor (5) passes through the connecting plate (4). The output shaft of the motor (5) is provided with a coaxially arranged connecting shaft (13). Scrapers (14) are distributed on the lower side of the connecting shaft (13). Each scraper (14) is equidistantly arranged on the side of the connecting shaft (13). The connecting shaft (13) is located inside the connecting pipe (11). The lower end of the connecting pipe (11) is connected to the feed end of the vibrating screen (1). A screen (12) is provided inside the connecting pipe (11).
4. The three-component mixing device for spraying black powder according to claim 3, characterized in that: The upper end of the connecting pipe (11) is provided with a receiving funnel (6), and at least one screen (12) is provided inside the connecting pipe (11). The screens (12) are arranged in parallel, and the lower surface of the scraper (14) abuts against the upper surface of the uppermost screen (12).
5. The three-component mixing device for spraying black powder according to claim 4, characterized in that: The scraper (14) is made of a soft elastic material and is an insulating material.
6. The three-component mixing device for spraying black powder according to claim 1, characterized in that: The feeding device includes a support plate (7) and a material bucket (10). The support plate (7) is longitudinally arranged on one side of the vibrating screen (1). The support plate (7) has an inverted L-shaped structure. The outer surface of the support plate (7) is provided with a T-shaped groove (8). The support plate (7) is provided with a grounding wire (15). The groove (8) is provided with a connecting block (17). The connecting block (17) slides up and down along the support plate (7) in the groove (8). One end of the connecting block (17) is provided with a rotating shaft (18). The rotating shaft (18) is located in the groove (8). The other end of the connecting block (17) is provided with a fixing plate (19). The material bucket (10) is provided with a fixing seat (16) on the side facing the support plate (7). The fixing plate (19) and the fixing seat (16) are engaged.
7. The three-component mixing device for spraying black powder according to claim 6, characterized in that: The lower end of the outer surface of the bearing plate (7) is provided with a weighing instrument (9), which is located below the material bucket (10).