Pyrotechnic composition wrapping device

Abstract

The utility model relates to the technical field of firework manufacturing, in particular to a pyrotechnic composition wrapping device which comprises a composition wrapping machine and a feeding system, the composition wrapping machine comprises an obliquely-arranged composition wrapping roller and a driving mechanism driving the composition wrapping roller to rotate, one end of the composition wrapping roller is a feeding port inclining upwards, and the other end of the composition wrapping roller is a sealing plate. A normally closed discharge door is arranged on the wall of the medicine wrapping roller; the feeding system comprises a feeding hopper, a weighing hopper and a feeding hopper which are arranged from top to bottom and can feed materials in sequence, movable baffles are arranged at the bottom end of the feeding hopper and the bottom end of the weighing hopper respectively, and weighing sensors are further arranged on the movable baffles of the weighing hopper. A discharging pipe of the feeding hopper extends into a feeding port of the explosive wrapping roller. Through cooperation of the feeding hopper and the weighing hopper, accurate control over the amount of powder entering the powder wrapping roller can be achieved, it is guaranteed that different batches of firework particles can be evenly wrapped with the powder, and therefore the yield and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fireworks manufacturing, in particular to a pyrotechnic powder coating device. Background Art

[0002] In the fireworks manufacturing process, pelletizing and coating fireworks is one of the most dangerous steps. Traditionally, it was performed manually, resulting in low efficiency, poor quality, and frequent safety accidents. While some machines for pelletizing and coating fireworks have emerged in recent years, they are not yet mature. For example, uneven coating of the fireworks pellets can lead to low yields and inefficient production.

[0003] Therefore, a novel pyrotechnic powder coating device is urgently needed to solve the above problems. Utility Model Content

[0004] (1) Technical issues to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a pyrotechnic powder coating device to solve the problem of uneven coating of pyrotechnic particles.

[0006] (2) Technical solution

[0007] In order to achieve the above-mentioned object, the pyrotechnic powder coating device of the present invention comprises:

[0008] The medicine coating machine includes an inclined medicine coating drum and a driving mechanism for driving the medicine coating drum to rotate, one end of the medicine coating drum is an upwardly inclined feeding port and the other end is a closing plate, and a normally closed discharge door is provided on the cylinder wall of the medicine coating drum;

[0009] The feeding system includes a feeding hopper, a weighing hopper and a feeding hopper arranged from top to bottom and capable of feeding materials in sequence. The bottom ends of the feeding hopper and the weighing hopper are respectively provided with movable baffles. A weighing sensor is also provided on the movable baffle of the weighing hopper. The discharge pipe of the feeding hopper extends to the feed port of the medicine coating drum.

[0010] Optionally, a plurality of stirring blades are provided on the inner side of the cylinder wall of the medicine coating drum, and the stirring blades extend in a direction parallel to the axis of the medicine coating drum.

[0011] Optionally, the pyrotechnic powder coating device further includes a humidifying unit, which includes a water pump, a humidifying pipe and an atomizing nozzle. The humidifying pipe connects the water pump and the atomizing nozzle, and the water outlet of the atomizing nozzle faces the feed port of the coating drum.

[0012] Optionally, the pyrotechnic powder coating device further includes a dust suction unit, which includes a negative pressure machine, a dust suction pipe and a dust suction hood, the dust suction pipe connects the negative pressure machine and the dust suction hood, and the opening of the dust suction hood is aligned with the feed port of the coating drum.

[0013] Optionally, the discharge door is hinged on the cylinder wall of the medicine-coated drum, and a first telescopic rod is provided on the outer side of the cylinder wall of the medicine-coated drum. The first end of the first telescopic rod is hinged to the medicine-coated drum and the second end of the first telescopic rod is hinged to the fixed rod on the discharge door so that the discharge door can be opened and closed.

[0014] Optionally, a second telescopic rod and a locking block are further provided on the outer side of the cylinder wall of the medicine coating drum, and the locking block is fixed to the free end of the second telescopic rod and can lock the discharge door.

[0015] Optionally, a material guide trough is provided below the medicine coating drum.

[0016] Optionally, the driving mechanism includes a motor box, a transmission shaft, and a motor and a transmission unit arranged in the motor box. The motor, the transmission unit and the transmission shaft are sequentially connected in transmission, and the transmission shaft is coaxially connected to the closing plate of the medicine-coating drum.

[0017] Optionally, the movable baffle is hingedly installed and is opened and closed by being driven by a third telescopic rod.

[0018] Optionally, the feeding system includes multiple groups of the feeding hoppers and the weighing hoppers.

[0019] (3) Beneficial effects

[0020] In the pyrotechnic powder coating device of the present invention, a movable baffle at the bottom of a feed hopper is opened, allowing powder to enter a weighing hopper for weighing. When the powder quantity reaches a predetermined level, the movable baffle of the feed hopper is closed and the movable baffle of the weighing hopper is opened, allowing a predetermined amount of powder to be fed into the feed hopper and then fall into the inlet of a coating drum, thereby coating the pyrotechnic particles placed in the coating drum. The coordination of the feed hopper and the weighing hopper allows precise control of the amount of powder entering the coating drum, ensuring that different batches of pyrotechnic particles are uniformly coated, thereby improving yield and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic front view of the pyrotechnic powder coating device of the present invention;

[0022] Figure 2 for Figure 1 Right view of the diagram (omitted Figure 1 Partial structure in );

[0023] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0024] [Description of Reference Numerals]

[0025] 10: Medicine coating machine; 11: Medicine coating drum; 111: Discharge door; 112: Stirring blade; 113: First telescopic rod; 114: Fixed rod; 115: Second telescopic rod; 116: Locking block; 117: Mounting plate;

[0026] 12: driving mechanism; 121: motor box; 122: transmission shaft;

[0027] 20: feeding system; 21: feeding hopper; 22: weighing hopper; 23: feeding hopper; 24: movable baffle; 25: third telescopic rod;

[0028] 31: Humidification tube; 32: Atomizing nozzle;

[0029] 41: dust suction pipe; 42: dust suction hood;

[0030] 50: guide chute;

[0031] 60: frame; 61: mounting rod. DETAILED DESCRIPTION

[0032] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can refer to fixed connection, detachable connection, or integration; "connection" can refer to mechanical connection or electrical connection; it can refer to direct connection or indirect connection through an intermediate medium; it can refer to internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] See also Figure 1 and Figure 2 The present invention provides a pyrotechnic powder coating device, which can specifically include a coating machine 10 and a feeding system 20. The coating machine 10 includes an inclined coating drum 11 and a driving mechanism 12 for driving the coating drum 11 to rotate. One end of the coating drum 11 is an upwardly inclined feeding port and the other end is a closing plate. The coating drum 11 is in the shape of an oblate spheroid, similar to an oblate pumpkin. Both end faces in the axial direction are flat and parallel to each other. In addition, a normally closed discharge door 111 (open only when unloading) is provided on the wall of the coating drum 11 (see for details). Figure 3 ), when the coating is completed and unloading is required, the discharge door 111 can be opened for unloading.

[0037] The feeding system 20 includes a feeding hopper 21, a weighing hopper 22, and a feeding hopper 23 arranged from top to bottom and capable of feeding materials in sequence. The bottom ends of the feeding hopper 21 and the weighing hopper 22 are respectively provided with movable baffles 24. The movable baffle 24 of the weighing hopper 22 is also provided with a weighing sensor (not shown). The discharge pipe of the feeding hopper 21 extends into the inlet of the coating drum 11. The weighing sensor can be a resistance strain type, for example, the elastic element and resistance strain gauge of the weighing sensor are installed on the top surface of the movable baffle 24 and covered by a dust cover. The displacement change of the dust cover is transmitted to the elastic element and fed back to the measurement circuit by the resistance strain gauge, thereby realizing the weight measurement function. In addition, the pyrotechnic powder coating device also includes a frame 60 for installing the feeding system 20. Specifically, the feeding hopper 21 is installed on the frame 60 via a mounting rod 61.

[0038] During operation, the movable baffle 24 at the bottom of the feed hopper 21 opens, allowing the powdered drug to enter the weighing hopper 22 and be weighed on the movable baffle 24. When the drug quantity reaches a predetermined level, the movable baffle 24 of the feed hopper 21 closes and the movable baffle 24 of the weighing hopper 22 opens, feeding a predetermined amount of powdered drug into the feed hopper 23 and then into the inlet of the coating drum 11, coating the pyrotechnic particles placed in the coating drum 11. The coordination between the feed hopper 21 and the weighing hopper 22 allows for precise control of the amount of powdered drug entering the coating drum 11, ensuring that different batches of pyrotechnic particles are uniformly coated, thereby improving yield and production efficiency. The movable baffle 24 can be hingedly mounted at the bottom of the corresponding hopper and opened and closed by the drive of the third telescopic rod 25. It should be noted that the weighing sensor and the third telescopic rod 25 can be electrically connected to the control module, and the control module can control the movement of the third telescopic rod 25 according to the signal feedback from the weighing sensor. The control process and working principle between the control module, the weighing sensor and the third telescopic rod 25 are existing technologies and will not be repeated here.

[0039] In a preferred embodiment, a plurality of stirring blades 112 are provided on the inner side of the wall of the medicine coating drum 11 (see Figure 1 ), the stirring blades 112 extend in a direction parallel to the axis of the medicine coating drum 11. The multiple stirring blades 112 are evenly spaced along the circumference, which can improve the stirring efficiency and ensure the improvement of the medicine coating efficiency.

[0040] See again Figure 1 The pyrotechnic powder coating device also includes a humidification unit, which includes a water pump (not shown), a humidification pipe 31, and an atomizing nozzle 32. The humidification pipe 31 connects the water pump and the atomizing nozzle 32, and the water outlet of the atomizing nozzle 32 faces the inlet of the coating drum 11, so that the powder can efficiently adhere to the pyrotechnic particles. In addition, the pyrotechnic powder coating device also includes a dust collection unit, which includes a negative pressure machine (not shown), a dust collection pipe 41, and a dust collection hood 42. The dust collection pipe 41 connects the negative pressure machine and the dust collection hood 42. The opening of the dust collection hood 42 is aligned with the inlet of the coating drum 11 to suck away excess dust in the coating drum 11.

[0041] In order to facilitate unloading, the discharge door 111 is hinged on the wall of the medicine coating drum 11. A first telescopic rod 113 is provided on the outer side of the wall of the medicine coating drum 11. The first end of the first telescopic rod 113 is hinged on the medicine coating drum 11 and the second end of the first telescopic rod 113 is hinged on the fixed rod 114 on the discharge door 111, so that the discharge door 11 can be opened and closed. Figure 3When the drug coating is complete, the drive mechanism 12 stops rotating and ensures that the discharge door 111 of the drug coating drum 11 is directly below. At this time, the first telescopic rod 113 contracts, driving the discharge door 111 to rotate about the hinge axis and open downward, thereby unloading. A guide trough 50 is provided below the drug coating drum 11, through which the coated pyrotechnic particles can be transferred to the collection box. In addition, to prevent the discharge door 111 from opening during the rotation of the drug coating drum 11, a second telescopic rod 115 and a locking block 116 are provided on the outer wall of the drug coating drum 11. The second telescopic rod 115 is fixed to a mounting plate 117 outside the drug coating drum 11. The locking block 116 is fixed to the free end of the second telescopic rod 115 and can lock the discharge door 111. When the discharge door 111 needs to be opened, the second telescopic rod 115 contracts and drives the locking block 116 to move backward, removing the locking block 116 from the discharge door 111, thereby unlocking it. The first telescopic rod 113 , the second telescopic rod 115 and the third telescopic rod 25 may all be cylinders or electric push rods.

[0042] See again Figure 2 The drive mechanism 12 includes a motor box 121, a transmission shaft 122, and a motor and transmission unit disposed within the motor box 121. The motor (not shown), the transmission unit (which may include a reducer, etc.), and the transmission shaft 122 are sequentially connected in a transmission manner. The transmission shaft 122 is coaxially connected to the sealing plate of the medicine coating drum 11. The motor's built-in controller can control the motor's start and stop, and can also determine the appropriate stop position based on the feedback signal from the motor's attached photoelectric encoder.

[0043] Furthermore, in other embodiments, the feeding system 20 may further include multiple sets of feeding hoppers 21 and weighing hoppers 22. When using multiple different powders to coat the pyrotechnic particles, the different powders can be placed in different feeding hoppers 21, and then the corresponding weighing hoppers 22 feed the powders to the feeding hopper 23 in a quantitative manner according to the required ratio, thereby improving the powder feeding efficiency and ensuring the accuracy of the coating powder ratio.

[0044] It should be understood that the above description of the specific embodiments of the present invention is merely for the purpose of illustrating the technical approach and features of the present invention. Its purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. However, the present invention is not limited to the above-described specific embodiments. Any changes or modifications made within the scope of the claims of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pyrotechnic powder coating device, characterized in that: The pyrotechnic powder coating device comprises: A medicine coating machine (10) includes a medicine coating drum (11) arranged obliquely and a driving mechanism (12) for driving the medicine coating drum (11) to rotate, one end of the medicine coating drum (11) is an upwardly inclined feeding port and the other end is a closing plate, and a normally closed discharge door (111) is provided on the cylinder wall of the medicine coating drum (11); A feeding system (20) includes a feeding hopper (21), a weighing hopper (22) and a feeding hopper (23) arranged from top to bottom and capable of feeding materials in sequence, the bottom ends of the feeding hopper (21) and the weighing hopper (22) are respectively provided with movable baffles (24), and a weighing sensor is also provided on the movable baffle (24) of the weighing hopper (22), and the discharge pipe of the feeding hopper (21) extends to the inlet of the medicine coating drum (11).

2. The pyrotechnic powder coating device according to claim 1, characterized in that: A plurality of stirring blades (112) are provided on the inner side of the wall of the medicine-coating drum (11), and the stirring blades (112) extend in a direction parallel to the axis of the medicine-coating drum (11).

3. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: The pyrotechnic powder coating device further comprises a humidifying unit, which comprises a water pump, a humidifying pipe (31) and an atomizing nozzle (32). The humidifying pipe (31) connects the water pump and the atomizing nozzle (32), and the water outlet of the atomizing nozzle (32) faces the feed port of the coating drum (11).

4. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: The pyrotechnic powder coating device further comprises a dust suction unit, which comprises a negative pressure machine, a dust suction pipe (41) and a dust suction hood (42). The dust suction pipe (41) connects the negative pressure machine and the dust suction hood (42), and the opening of the dust suction hood (42) is aligned with the feed port of the coating drum (11).

5. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: The discharge door (111) is hinged on the cylinder wall of the medicine-coating drum (11), and a first telescopic rod (113) is provided on the outer side of the cylinder wall of the medicine-coating drum (11), the first end of the first telescopic rod (113) is hinged on the medicine-coating drum (11), and the second end of the first telescopic rod (113) is hinged to the fixed rod (114) on the discharge door (111) so that the discharge door (111) can be opened and closed.

6. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: A second telescopic rod (115) and a locking block (116) are also provided on the outer side of the wall of the medicine coating drum (11); the locking block (116) is fixed to the free end of the second telescopic rod (115) and can lock the discharge door (111).

7. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: A material guide trough (50) is provided below the medicine coating drum (11).

8. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: The driving mechanism (12) comprises a motor box (121), a transmission shaft (122), and a motor and a transmission unit arranged in the motor box (121); the motor, the transmission unit and the transmission shaft (122) are sequentially connected in transmission; and the transmission shaft (122) is coaxially connected to the closing plate of the medicine coating drum (11).

9. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: The movable baffle (24) is hingedly mounted and is opened and closed by the driving of a third telescopic rod (25).

10. The pyrotechnic powder coating device according to claim 1 or 2, characterized in that: The feeding system (20) includes a plurality of feeding hoppers (21) and weighing hoppers (22).

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