Dust removal device for fireworks and crackers

Abstract

The utility model relates to the technical field of dust removal devices for urban environmental protection, in particular to a dust removal device for fireworks and crackers, which comprises a mounting shell and an exhaust fan, and further comprises a plurality of spray heads, a plurality of dust removal devices and a dust removal device, supporting rings are fixed to the outer sides of the filter screens, a plurality of mounting holes A are formed in the upper side of the mounting shell, and the supporting rings can slide on the inner sides of the mounting holes A; the C-shaped connecting strips are fixedly connected with the upper side of the supporting ring, and the C-shaped connecting strips can slide on the outer side of the mounting shell; a dust fall unit; and a plurality of installation positioning units. By arranging the spray head, the filter screen and the dust falling unit, when dust-containing air is in contact with the filter screen, liquid is used for carrying out dust falling treatment on the filter screen firstly, the dust content in the air treated by the filter screen is reduced, and therefore the frequency of cleaning and replacing the filter screen is reduced, the single-time use time is prolonged, and the service life of the whole filter screen is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of dust removal devices for urban environmental protection, and in particular to a dust removal device for fireworks and firecrackers. Background Technology

[0002] For urban environmental protection, air pollution, water pollution, and noise pollution are the main factors affecting the urban environment. Only by effectively controlling these pollution sources can we improve the effectiveness of urban environmental protection and provide strong support for urban environmental protection efforts. From the current perspective of urban environmental protection work, air pollution control, water pollution control, and noise pollution control should be the focus of environmental protection work. Specific urban environmental protection goals and measures should be formulated around these aspects to ensure the implementation of urban environmental protection measures, improve the overall effectiveness of urban environmental protection, and provide strong support for urban environmental protection work.

[0003] During the production process, products may generate a large amount of dust and other substances that pollute the air, thus affecting the air environment. For example, when producing fireworks and firecrackers, the dust generated during the production process in the factory will diffuse into the air. In order to ensure the air environment and the safety of the factory air, the air in the factory will be replaced through the air outlets and the original factory air will be filtered.

[0004] Dust generated during the production of fireworks and firecrackers is filtered through screens or cloths. Over time, this leads to a buildup of dust on the screens or cloths, requiring regular cleaning and replacement. However, frequent cleaning can damage the screens or cloths, affecting their lifespan. Therefore, we propose a dust removal device for fireworks and firecrackers to address these issues. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies where dust generated during the production of fireworks and firecrackers is filtered through a screen or cloth. Over time, this leads to a large accumulation of dust on the screen or cloth, requiring regular cleaning and replacement. However, repeated cleaning can damage the screen or cloth and shorten its lifespan. Therefore, this invention proposes a dust removal device for fireworks and firecrackers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a dust removal device for fireworks and firecrackers, including a mounting shell and an exhaust fan, wherein the exhaust fan is installed on the rear side of the mounting shell, and the exhaust fan is connected to a power supply and a controller via wires, and further includes:

[0008] Several nozzles, wherein the upper side of the mounting housing is provided with a through hole A, and the nozzles are located inside the through hole A;

[0009] Several filter screens are provided, and a support ring is fixed on the outer side of each filter screen. Several A-mounting holes are provided on the upper side of the mounting shell. The support ring can slide inside the A-mounting holes. C-shaped limiting strips are provided on both the front and rear sides of the support ring. The C-shaped limiting strips are fixedly connected to the inner side of the mounting shell.

[0010] Several C-shaped connecting strips, wherein the C-shaped connecting strips are fixedly connected to the upper side of the support ring and can slide on the outside of the mounting shell;

[0011] A dust suppression unit, located between the nozzle and the mounting housing;

[0012] Several installation positioning units are provided, and the C-shaped connecting strip and the mounting shell are connected by two installation positioning units.

[0013] Preferably, a handle is fixed to the upper side of the C-shaped connecting strip.

[0014] By adopting the above technical solution, the handle can be installed and removed from the filter screen more conveniently.

[0015] Preferably, the left and right ends of the C-shaped connecting strip have sliding limit plates, and the limit plates are fixedly connected to the outside of the mounting shell.

[0016] By adopting the above technical solution, the limiting plate plays a positioning role for the C-shaped connecting strip, allowing the C-shaped connecting strip to be installed more stably.

[0017] Preferably, the dust collection unit includes a liquid collection tank, a B-through hole on the lower side of the mounting shell, the liquid collection tank being fixed to the lower side of the mounting shell and communicating with the B-through hole, a mounting block on the upper side of the liquid collection tank, the mounting block being detachably connected to the upper side of the mounting shell, a plurality of B-mounting holes on the upper side of the mounting block, a mounting cylinder being fixed inside the B-mounting holes, the nozzle being detachably connected to the inner side of the mounting cylinder, an A-protective shell sliding inside the A-through hole, a plurality of A-through holes on the lower side of the A-protective shell, the nozzle being slidable inside the A-through holes, the A-protective shell being installed on the lower side of the mounting block, a water outlet hole on the rear side of the liquid collection tank, and a connecting pipe installed inside the water outlet hole.

[0018] By adopting the above technical solution, the dust removal unit can remove large particulate impurities from the air, prevent dust from flying, and better remove dust from the air.

[0019] Preferably, a baffle is provided on the rear side of the mounting block, and the baffle is fixedly connected to the inner side of the mounting shell.

[0020] By adopting the above technical solution, the backward diffusion of liquid can be reduced, thus improving the safety of the equipment.

[0021] Preferably, the outer side of the mounting shell is provided with a protective shell B, the front side of the liquid receiving tank and the mounting block is provided with a support block A, the rear side of the liquid receiving tank and the mounting block is provided with a support block B, and a through hole C is provided on one side of the support block B. The support block A and the support block B are installed on the outer side of the mounting shell and the inner side of the protective shell B.

[0022] By adopting the above technical solution, support block A and support block B support the protective shell B, and then the protective shell B is connected to the wall or platform, which protects the device and improves the service life of the device.

[0023] Preferably, the installation positioning unit includes a positioning plate, a buffer block is installed on the lower side of the positioning plate, a rotating plate is provided on the upper side of the buffer block, an adjustment part is provided between the rotating plate and the positioning plate, a connecting block is rotatably provided at the front end of the rotating plate, a support bar is provided at the lower rear end of the rotating plate, the connecting block and the support bar are fixedly connected to the mounting shell, L-shaped locking blocks are provided on the left and right sides of the support bar, and a positioning part is provided between the L-shaped locking blocks and the mounting shell.

[0024] By adopting the above technical solution, the installation positioning unit can quickly position the C-shaped connecting strip, enabling rapid installation and removal of the filter screen.

[0025] Preferably, the adjusting part includes an adjusting bolt, the upper side of the rotating plate is provided with an A sliding hole and two B sliding holes, a threaded cylinder is fixed on the upper side of the rotating plate, and two limiting nuts are provided on the lower side of the rotating plate. The adjusting bolt can slide inside the A sliding hole, and an A guide rod slides inside the B sliding hole. The adjusting bolt is rotatably connected to the upper side of the positioning plate, and the adjusting bolt is connected to the inner side of the threaded cylinder through threaded engagement. The A guide rod is fixedly connected to the upper side of the positioning plate, and the limiting nuts are connected to the outer side of the A guide rod through threaded engagement.

[0026] By adopting the above technical solution, the adjustment part can adjust the position of the positioning plate, which facilitates installation and can be used with C-type connecting strips of different thicknesses.

[0027] Preferably, the positioning part includes two springs. The L-shaped locking block has an A limiting strip on the side away from the support bar. The A limiting strip is fixedly connected to the outside of the mounting shell. The A limiting strip has two C sliding holes on one side. An auxiliary rod is provided inside the spring. The auxiliary rod can slide inside the C sliding holes and is fixedly connected to the L-shaped locking block. The spring is located between the L-shaped locking block and the A limiting strip. A guide hole is provided on one side of the support bar. A B guide rod is fixed on the side of the L-shaped locking block facing the support bar. The B guide rod can slide inside the guide hole.

[0028] By adopting the above technical solution, the positioning unit can quickly position the rotating plate.

[0029] The dust removal device for fireworks and firecrackers proposed in this utility model has the following advantages:

[0030] 1. By setting up nozzles, filters, and dust suppression units, when dusty air comes into contact with the filter, liquid is used to suppress the dust, reducing the dust content in the air processed by the filter. This reduces the frequency of filter cleaning and replacement, increases the single-use time, and extends the overall service life of the filter. Furthermore, the nozzle device is internal and will not affect factory production.

[0031] 2. By setting up a filter screen, C-shaped connecting strip, and installation positioning unit, the filter screen can be quickly installed and removed, improving the efficiency of filter screen cleaning and replacement. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the front side of a dust removal device for fireworks and firecrackers proposed in this utility model;

[0033] Figure 2 The present utility model proposes Figure 1 A magnified three-dimensional structural diagram of a portion of area A in the middle;

[0034] Figure 3 This is a three-dimensional structural diagram of the rear side of a dust removal device for fireworks and firecrackers proposed in this utility model;

[0035] Figure 4 The present utility model proposes Figure 3 Enlarged 3D schematic diagram of a portion of area B in the middle;

[0036] Figure 5 The present utility model proposes Figure 3 A magnified three-dimensional structural diagram of a portion of the central C area;

[0037] Figure 6 This is a three-dimensional cross-sectional view of the rear side of a dust removal device for fireworks and firecrackers proposed in this utility model;

[0038] Figure 7 The present utility model proposes Figure 6 A magnified three-dimensional structural diagram of a portion of the central D region;

[0039] Figure 8 The present utility model proposes Figure 6 A magnified three-dimensional structural diagram of a portion of the central E region;

[0040] Figure 9 This is a right-side cross-sectional three-dimensional structural diagram of a dust removal device for fireworks and firecrackers proposed in this utility model;

[0041] Figure 10 The present utility model proposes Figure 9 A magnified three-dimensional structural diagram of a portion of the central F region;

[0042] Figure 11 The present utility model proposes Figure 9 A magnified three-dimensional structural diagram of a portion of the G region;

[0043] Figure 12 The present utility model proposes Figure 9 A magnified three-dimensional structural diagram of the middle H region.

[0044] In the diagram: 1. Mounting housing; 2. Exhaust fan; 3. Nozzle; 4. Filter screen; 5. C-type connecting strip; 6. Dust suppression unit; 61. Liquid collection tank; 62. Mounting block; 63. Mounting cylinder; 64. Protective housing A; 65. Connecting pipe; 66. Baffle; 7. Mounting positioning unit; 71. Positioning plate; 72. Buffer block; 73. Rotating plate; 74. Adjustment part; 741. Adjusting bolt; 742. Threaded cylinder; 743. Limiting nut; 744. Guide rod A; 75. Connecting block; 76. Support strip; 77. L-shaped locking block; 78. Positioning part; 781. Spring; 782. Limiting strip A; 783. Auxiliary rod; 784. Guide rod B; 8. Support ring; 9. C-type limiting strip; 10. Handle; 11. Limiting plate; 12. Protective housing B; 13. Support block A; 14. Support block B. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0046] Reference Figure 1-12 A dust removal device for fireworks and firecrackers includes a mounting shell 1 and an exhaust fan 2. The exhaust fan 2 is mounted on the rear side of the mounting shell 1 and is connected to a power supply and a controller via wires. The device also includes: several nozzles 3, several filter screens 4, several C-shaped connecting strips 5, a dust suppression unit 6, and several mounting and positioning units 7.

[0047] The upper side of the mounting housing 1 is provided with a through hole A, and the nozzle 3 is located inside the through hole A;

[0048] The dust suppression unit 6 is located between the nozzle 3 and the mounting housing 1. The dust suppression unit 6 includes a liquid collection tank 61. A B-through hole is provided on the lower side of the mounting housing 1. The liquid collection tank 61 is fixed to the lower side of the mounting housing 1, and its inner side communicates with the B-through hole. A mounting block 62 is provided on the upper side of the liquid collection tank 61. The mounting block 62 is detachably connected to the upper side of the mounting housing 1. A baffle 66 is provided on the rear side of the mounting block 62, and the baffle 66 is fixedly connected to the inner side of the mounting housing 1. Several B-mounting holes are provided on the upper side of the mounting block 62. A mounting cylinder 63 is fixed inside each B-mounting hole. The nozzle 3 is detachably connected to the inner side of the mounting cylinder 63. An A-protective shell 64 slides inside the A-through hole. The shell 64 has several A-holes on its lower side. The nozzle 3 can slide inside the A-holes. The A-protective shell 64 is installed on the lower side of the mounting block 62. The liquid collection tank 61 has a water outlet on its rear side. A connecting pipe 65 is installed inside the water outlet. The liquid is sprayed out through the nozzle 3 to spray the passing air to reduce dust. Then the air is allowed to flow down for treatment, which improves the quality and efficiency of air dust reduction. The liquid will eventually flow into the liquid collection tank 61 and be discharged from the connecting pipe 65 for treatment and reuse, reducing resource waste. At the same time, the baffle 66 can reduce the probability of liquid spreading to the rear side and, together with the liquid, can reduce air backflow, improving the safety of the equipment.

[0049] Spray dust suppression technology uses a high-pressure spray system to atomize water into tiny particles, which then adsorb and settle dust particles in the air, improving air quality. Its principle is based on the physical concepts of adsorption and sedimentation. Tiny water droplets have high surface tension, enabling them to quickly adsorb dust particles from the air. Over time, the water droplets carrying the dust particles gradually settle to the ground or other collection devices. The advantages of spray dust suppression technology include energy saving and environmental protection, intelligent control, wide application, and ease of maintenance. This technology is widely used in industry, construction, and environmental remediation, and is particularly effective in industrial environments with high dust pollution.

[0050] A protective shell 12 (B) is provided on the outside of the mounting shell 1. A support block 13 (A) is provided on the front side of the liquid collection tank 61 and the mounting block 62, and a support block 14 (B) is provided on the rear side of the liquid collection tank 61 and the mounting block 62. A through hole (C) is provided on one side of the support block 14. The support block 13 (A) and the support block 14 (B) are installed on the outside of the mounting shell 1 and the inside of the protective shell 12 (B). The support block 13 (A) and the support block 14 (B) support the protective shell 12 (B). Then, the protective shell 12 (B) is connected to the wall or platform, etc., which protects the device and improves the service life of the device.

[0051] A support ring 8 is fixed on the outside of the filter screen 4. Several A mounting holes are provided on the upper side of the mounting shell 1. The support ring 8 can slide inside the A mounting holes. C-shaped limiting strips 9 are provided on both the front and rear sides of the support ring 8. The C-shaped limiting strips 9 are fixedly connected to the inside of the mounting shell 1. The air is treated by liquid in front of the filter screen 4, which reduces the intensity of the treatment by the filter screen 4 and improves the service life of the filter screen 4.

[0052] The exhaust fan 2 draws air from the front to the rear of the mounting housing 1. During this process, the air first comes into contact with the liquid sprayed from the nozzle 3. The liquid absorbs and settles the dust in the air and flows into the liquid collection tank 61. The dust-settled air then passes through multiple filters 4 for further treatment. Finally, the treated air can be discharged through the exhaust fan 2.

[0053] The C-shaped connecting strip 5 is fixedly connected to the upper side of the support ring 8 and can slide on the outside of the mounting shell 1. The left and right ends of the C-shaped connecting strip 5 are slidably connected to the limit plates 11. The limit plates 11 are fixedly connected to the outside of the mounting shell 1. The limit plates 11 play a positioning role for the C-shaped connecting strip 5, so that the C-shaped connecting strip 5 can be installed more stably. The upper side of the C-shaped connecting strip 5 is fixed with a handle 10, which makes it easier to install and remove the filter screen 4.

[0054] The C-shaped connecting strip 5 and the mounting shell 1 are connected by two mounting positioning units 7. The mounting positioning unit 7 includes a positioning plate 71. A buffer block 72 is installed on the lower side of the positioning plate 71. The buffer block 72 can buffer the contact between the positioning plate 71 and the C-shaped connecting strip 5, reduce the probability of collision between the two, and improve the service life. A rotating plate 73 is provided on the upper side of the buffer block 72. A connecting block 75 is rotatably mounted on the front end of the rotating plate 73. A support bar 76 is provided on the lower rear end of the rotating plate 73. The connecting block 75 and the support bar 76 are fixedly connected to the mounting shell 1. L-shaped locking blocks 77 are provided on the left and right sides of the support bar 76.

[0055] A positioning part 78 is provided between the L-shaped locking block 77 and the mounting shell 1. The positioning part 78 includes two springs 781. An A-limiting strip 782 is provided on the side of the L-shaped locking block 77 away from the support bar 76. The A-limiting strip 782 is fixedly connected to the outer side of the mounting shell 1. Two C-sliding holes are provided on one side of the A-limiting strip 782. An auxiliary rod 783 is provided inside the springs 781. The auxiliary rod 783 can slide inside the C-sliding holes and is fixedly connected to the L-shaped locking block 77. The springs 781 are located between the L-shaped locking block 77 and the A-limiting strip 782. The support bar 76... A guide hole is provided on the side. A guide rod 784 is fixed to the side of the L-shaped locking block 77 facing the support bar 76. The guide rod 784 can slide inside the guide hole. When the rotating plate 73 rotates onto the support bar 76, it will push the two L-shaped locking blocks 77 apart. Then, under the action of the spring 781, the L-shaped locking blocks 77 will be reset and locked on the upper side of the rotating plate 73, preventing the rotating plate 73 from rotating. This achieves quick positioning of the rotating plate 73. After the L-shaped locking blocks 77 are moved away from the rotating plate 73, the rotating plate 73 can rotate, which improves the efficiency of positioning the rotating plate 73.

[0056] An adjustment part 74 is provided between the rotating plate 73 and the positioning plate 71. The adjustment part 74 includes an adjustment bolt 741. The upper side of the rotating plate 73 has an A sliding hole and two B sliding holes. A threaded cylinder 742 is fixed on the upper side of the rotating plate 73, and two limit nuts 743 are provided on the lower side of the rotating plate 73. The adjustment bolt 741 can slide inside the A sliding hole. A guide rod 744 slides inside the B sliding holes. The adjustment bolt 741 is rotatably connected to the upper side of the positioning plate 71. The adjustment bolt 741 is connected to the inner side of the threaded cylinder 742 through threaded engagement. The A guide rod 744 and... The upper side of the positioning plate 71 is fixedly connected, and the limiting nut 743 is connected to the outer side of the A guide rod 744 by thread engagement. When the rotating plate 73 is positioned, the positioning plate 71 will be on the upper side of the C-shaped connecting strip 5. By rotating the adjusting bolt 741 and cooperating with the threaded cylinder 742, the position of the positioning plate 71 can be adjusted so that the positioning plate 71 presses on the C-shaped connecting strip 5 for positioning. This method can be used for C-shaped connecting strips 5 of different thicknesses. Furthermore, positioning the rotating plate 73 allows the positioning plate 71 to move up slightly, which facilitates positioning and improves the efficiency of installation and disassembly.

[0057] First, install the C-shaped connecting strip 5 with the filter screen 4 inside the mounting housing 1. Then, rotate the rotating plate 73 onto the support strip 76 to position it with the positioning part 78. Then, use the adjusting part 74 to press the positioning plate 71 with the buffer block 72 onto the C-shaped connecting strip 5. When disassembling, release the rotating plate 73 through the positioning part 78 to quickly remove the filter screen 4, thus improving the efficiency of installing and disassembling the filter screen 4.

[0058] In the description of this patent, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two components. For those skilled in the art, the specific meaning of the above terms in this patent can be understood according to the specific circumstances.

[0059] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dust removal device for fireworks and firecrackers, comprising a mounting shell (1) and an exhaust fan (2), wherein the exhaust fan (2) is mounted on the rear side of the mounting shell (1), and the exhaust fan (2) is connected to a power supply and a controller via wires, characterized in that, Also includes: A plurality of nozzles (3), wherein the upper side of the mounting housing (1) is provided with a through hole A, and the nozzles (3) are located inside the through hole A; A plurality of filter screens (4) are provided, and a support ring (8) is fixed on the outside of the filter screens (4). A plurality of A mounting holes are provided on the upper side of the mounting shell (1). The support ring (8) can slide inside the A mounting holes. C-shaped limiting strips (9) are provided on both the front and rear sides of the support ring (8). The C-shaped limiting strips (9) are fixedly connected to the inner side of the mounting shell (1). Several C-shaped connecting strips (5) are fixedly connected to the upper side of the support ring (8) and the C-shaped connecting strips (5) can slide on the outside of the mounting shell (1); A dust suppression unit (6) is located between the nozzle (3) and the mounting housing (1); Several mounting and positioning units (7) are provided, and the C-shaped connecting strip (5) and the mounting shell (1) are connected by two mounting and positioning units (7).

2. The dust removal device for fireworks and firecrackers according to claim 1, characterized in that, A handle (10) is fixed to the upper side of the C-shaped connecting strip (5).

3. The dust removal device for fireworks and firecrackers according to claim 1, characterized in that, The C-shaped connecting strip (5) has sliding limit plates (11) at both ends, and the limit plates (11) are fixedly connected to the outside of the mounting shell (1).

4. The dust removal device for fireworks and firecrackers according to claim 1, characterized in that, The dust collection unit (6) includes a liquid collection tank (61). The mounting shell (1) has a B through hole on its lower side. The liquid collection tank (61) is fixed to the lower side of the mounting shell (1) and the inner side of the liquid collection tank (61) is connected to the B through hole. The liquid collection tank (61) has a mounting block (62) on its upper side. The mounting block (62) is detachably connected to the upper side of the mounting shell (1). The mounting block (62) has several B mounting holes on its upper side. The mounting cylinder (63) is fixed inside the B mounting holes. The nozzle (3) is detachably connected to the inner side of the mounting cylinder (63). The A protective shell (64) slides inside the A through hole. The A protective shell (64) has several A through holes on its lower side. The nozzle (3) can slide inside the A through holes. The A protective shell (64) is installed on the lower side of the mounting block (62). The liquid collection tank (61) has a water outlet on its rear side. A connecting pipe (65) is installed inside the water outlet.

5. A dust removal device for fireworks and firecrackers according to claim 4, characterized in that, The mounting block (62) is provided with a baffle (66) on the rear side, and the baffle (66) is fixedly connected to the inner side of the mounting shell (1).

6. A dust removal device for fireworks and firecrackers according to claim 4, characterized in that, The mounting shell (1) is provided with a B protective shell (12) on the outside. The liquid collection tank (61) and the mounting block (62) are provided with an A support block (13) on the front side and a B support block (14) on the rear side of the liquid collection tank (61) and the mounting block (62). The B support block (14) is provided with a C through hole on one side. The A support block (13) and the B support block (14) are installed on the outside of the mounting shell (1) and the inside of the B protective shell (12).

7. The dust removal device for fireworks and firecrackers according to claim 1, characterized in that, The installation positioning unit (7) includes a positioning plate (71), a buffer block (72) is installed on the lower side of the positioning plate (71), a rotating plate (73) is provided on the upper side of the buffer block (72), an adjustment part (74) is provided between the rotating plate (73) and the positioning plate (71), a connecting block (75) is rotatably provided at the front end of the rotating plate (73), a support bar (76) is provided at the rear end of the lower side of the rotating plate (73), the connecting block (75) and the support bar (76) are fixedly connected to the mounting shell (1), L-shaped locking blocks (77) are provided on the left and right sides of the support bar (76), and a positioning part (78) is provided between the L-shaped locking blocks (77) and the mounting shell (1).

8. A dust removal device for fireworks and firecrackers according to claim 7, characterized in that, The adjusting part (74) includes an adjusting bolt (741). The upper side of the rotating plate (73) is provided with an A sliding hole and two B sliding holes. A threaded cylinder (742) is fixed on the upper side of the rotating plate (73), and two limiting nuts (743) are provided on the lower side of the rotating plate (73). The adjusting bolt (741) can slide inside the A sliding hole. An A guide rod (744) slides inside the B sliding hole. The adjusting bolt (741) is rotatably connected to the upper side of the positioning plate (71). The adjusting bolt (741) is connected to the inner side of the threaded cylinder (742) through threaded engagement. The A guide rod (744) is fixedly connected to the upper side of the positioning plate (71). The limiting nuts (743) are connected to the outer side of the A guide rod (744) through threaded engagement.

9. A dust removal device for fireworks and firecrackers according to claim 7, characterized in that, The positioning part (78) includes two springs (781). The L-shaped locking block (77) is provided with an A limiting strip (782) on the side away from the support bar (76). The A limiting strip (782) is fixedly connected to the outside of the mounting shell (1). The A limiting strip (782) is provided with two C sliding holes on one side. The spring (781) is provided with an auxiliary rod (783) on the inside. The auxiliary rod (783) can slide inside the C sliding hole. The auxiliary rod (783) is fixedly connected to the L-shaped locking block (77). The spring (781) is located between the L-shaped locking block (77) and the A limiting strip (782). The support bar (76) is provided with a guide hole on one side. The L-shaped locking block (77) is fixed with a B guide rod (784) on the side facing the support bar (76). The B guide rod (784) can slide inside the guide hole.

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