Automatic explosive screening device

Abstract

The utility model discloses an automatic explosive screening device and belongs to the technical field of military ammunition production. The vibrating screen comprises a quick-release upper cover, a box body, a vibration exciter, a support and a partition wall transmission driving mechanism, the box body is arranged on the support, the quick-release upper cover is installed on the top of the box body, a screen plate is arranged in the box body, meanwhile, a discharging port is formed in the bottom of the box body, and the vibration exciter is installed on the outer side of the box body and connected with the partition wall transmission driving mechanism. The utility model aims to provide an operation device which adapts to explosive production environment, safely and effectively prolongs the service life of explosive screening and improves the production efficiency, and can realize full-automatic work, reduce manual operation and improve the screening speed. According to the invention, the frequency of manual contact with the explosive is reduced, the labor intensity is reduced, the labor cost is reduced, meanwhile, the quality problem caused by manual misoperation can be avoided, the potential safety hazard in the production process is reduced, and the production safety is improved.

Description

Technical Field

[0001] This utility model relates to an automatic explosives screening device, belonging to the field of ammunition production technology. Background Technology

[0002] In the field of ammunition production, simple pneumatically driven vibrating screens are typically used for coarse screening during the explosives screening process. Currently, there are generally two working principles for vibrating screens used in explosives production sites: one is to generate a vibration source by high-speed reversal of compressed air, and the other is to generate a vibration source by a pneumatic motor driving an eccentric block.

[0003] High-speed commutation of compressed air to generate a vibration source results in a short lifespan for the commutator in actual production. Frequent replacement of the commutator not only increases the company's operating costs but also greatly reduces production efficiency. However, when using pneumatic drive to generate a vibration source, the response time of the equipment from static to normal vibration frequency or from normal vibration frequency to static is long when the equipment starts or stops. As a result, the equipment structure spends a long time in the resonance zone, which drastically reduces the service life of the equipment.

[0004] Therefore, there is an urgent need to develop a new type of automatic explosive sieving device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to solve the problem of providing an operating device that is adaptable to the explosives production environment, safely and effectively improves the service life of explosives screening and increases production efficiency. A brief overview of this invention is provided below to offer a basic understanding of certain aspects of it. It should be understood that this overview is not an exhaustive summary of this invention. It is not intended to identify key or essential parts of this invention, nor is it intended to limit the scope of this invention.

[0006] The technical solution of this utility model:

[0007] An automatic explosive sieving device includes a quick-release cover, a housing, a vibrator, a support, and a partition wall transmission drive mechanism. The housing is mounted on the support, with a quick-release cover installed on the top of the housing. The housing has a sieve plate inside and a discharge port at the bottom. The vibrator is installed on the outside of the housing and is connected to the partition wall transmission drive mechanism.

[0008] Preferably, the partition wall drive mechanism includes an outer partition wall, an explosion-proof motor, a drive shaft, and a protective sleeve. The explosion-proof motor and the bracket are respectively disposed on the left and right sides of the outer partition wall. The drive shaft is rotatably mounted on the outer partition wall through the protective sleeve. The output end of the explosion-proof motor is connected to one end of the drive shaft, and the other end of the drive shaft is connected to the vibrator.

[0009] Preferably, the vibrator includes a housing, a rotating shaft, an eccentric block, a rotating mounting base, and a flexible coupling. The housing is fixedly installed on the outer wall of the box, the rotating shaft is rotatably installed inside the housing via the rotating mounting base, the rotating shaft is provided with an eccentric block, and the end of the rotating shaft is connected to the transmission shaft via the flexible coupling.

[0010] Preferably, the box body is provided with a bouncing ball mounting groove, and the bottom of the bouncing ball mounting groove is attached to the sieve plate, and a bouncing ball is placed in the bouncing ball mounting groove.

[0011] Preferably, the bracket is connected to the housing via a rubber spring.

[0012] This utility model has the following beneficial effects:

[0013] 1. This utility model can achieve fully automated operation, reduce manual operation, and improve screening speed. Compared with manual screening, automated equipment can complete the screening process faster, thereby improving production efficiency, shortening the production cycle, reducing reliance on manual operation, reducing the frequency of human contact with explosives, reducing labor intensity, reducing labor costs, and at the same time, avoiding quality problems caused by human operation errors, reducing safety hazards in the production process, and improving production safety;

[0014] 2. This utility model can achieve precise screening by replacing sieve plates of different densities, ensuring the consistency of the quality of each batch of explosives;

[0015] 3. This utility model can effectively remove non-standard particles or impurities, ensuring that the screened explosive particles meet the requirements in terms of physical and chemical properties, thereby improving the overall quality of the product and reducing defective products. Attached Figure Description

[0016] Figure 1 This is a front view of an automatic explosives sorting device;

[0017] Figure 2 This is a side view of an automatic explosives sorting device;

[0018] Figure 3 This is a top view of an automatic explosives sorting device;

[0019] Figure 4 This is a schematic diagram of the structure of the vibrator of this utility model;

[0020] Figure 5 This is a structural schematic diagram of the box body of this utility model.

[0021] In the diagram: 1-Quick-release top cover, 2-Box body, 3-Vibrator, 4-Bracket, 5-Partition wall transmission drive mechanism, 6-Bouncing ball, 21-Screen plate, 22-Discharge port, 23-Bouncing ball mounting groove, 31-Shell, 32-Rotating shaft, 33-Eccentric block, 34-Rotating mounting seat, 35-Flexible coupling, 41-Rubber spring, 51-Barrier outer wall, 52-Explosion-proof motor, 53-Drive shaft, 54-Sheath. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the present utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0023] The connections mentioned in this utility model are divided into fixed connections and detachable connections. Fixed connections, also known as non-detachable connections, include but are not limited to conventional fixed connection methods such as folded connections, riveted connections, adhesive connections, and welded connections. Detachable connections include but are not limited to conventional disassembly methods such as threaded connections, snap-fit ​​connections, pin connections, and hinged connections. When a specific connection method is not explicitly defined, it is assumed that at least one existing connection method can always be found to achieve the function, and those skilled in the art can choose according to their needs. For example, a welded connection can be chosen for fixed connections, and a hinged connection can be chosen for detachable connections.

[0024] Specific implementation method one: Combining Figures 1-5 This embodiment describes an automatic explosive sieving device, comprising a quick-release cover 1, a housing 2, a vibrator 3, a support 4, and a partition wall transmission drive mechanism 5. The housing 2 is mounted on the support 4 and is connected to the housing 2 via a rubber spring 41. The quick-release cover 1 is mounted on the top of the housing 2. The housing 2 has a sieve plate 21 inside and a discharge port 22 at the bottom. The vibrator 3 is mounted on the outside of the housing 2 and is connected to the partition wall transmission drive mechanism 5.

[0025] The housing 2 is a trough welded from 304 stainless steel plates, used to store materials for vibrating screening. Simultaneously, it matches the appropriate screen plate 21 according to the material mesh size requirements, enabling simultaneous screening and filtering of multiple materials of different specifications. Changing the screen plate 21 is simple and convenient. Considering the adaptability to various materials, the housing 2 is equipped with a bouncing ball mounting groove 23, with the bottom of the bouncing ball mounting groove 23 fitting against the screen plate 21. A bouncing ball position is reserved at the screen plate, and bouncing balls 6 are installed inside the bouncing ball mounting groove 23. For special materials, the screen plate 21 containing bouncing balls can be quickly replaced, improving screening efficiency and effect, further expanding the material application range of the screening machine, and meeting the production needs of multi-purpose machines.

[0026] The bracket 4 is used to support the housing and isolate vibration. The rubber spring 41 can effectively isolate the vibration generated by the housing and protect the ground of the fixed bracket. Using the rubber spring 41 as a shock absorber, compared with traditional coil springs and leaf springs, not only eliminates the source of danger in abnormal conditions, but also further improves the vibration response speed, allowing the equipment to quickly pass through the resonance zone and extend the service life of the equipment.

[0027] The partition wall drive mechanism 5 provides a rotational power source for the vibrator 3. It includes an outer partition wall 51, an explosion-proof motor 52, a drive shaft 53, and a protective sleeve 54. The explosion-proof motor 52 and the bracket 4 are respectively arranged on the left and right sides of the outer partition wall 51. The drive shaft 53 is rotatably mounted on the outer partition wall 51 through the protective sleeve 54. The output end of the explosion-proof motor 52 is connected to one end of the drive shaft 53, and the other end of the drive shaft 53 is connected to the vibrator 3.

[0028] The vibrator 3 includes a housing 31, a rotating shaft 32, an eccentric block 33, a rotating mounting base 34, and an elastic coupling 35. The housing 31 is fixedly installed on the outer wall of the housing 2. The rotating shaft 32 is rotatably installed inside the housing 31 through the rotating mounting base 34. An eccentric block 33 is provided on the rotating shaft 32. The end of the rotating shaft 32 is connected to the transmission shaft 53 through the elastic coupling 35. The elastic coupling 35 not only has the function of a coupling, but also isolates the vibration between the vibrator 3 and the transmission shaft 53, ensuring the normal operation of the explosion-proof motor 52.

[0029] To ensure screening effectiveness, the vibrator 3 can adjust the eccentricity of the eccentric block 33, thereby adjusting the magnitude of the excitation force. When the explosion-proof motor 52 drives the eccentric block 33 to rotate, it generates a rated excitation force. Under its action, the box 2 supported on the rubber spring 41 produces reciprocating linear vibration. When the vertical component N of the vibration acceleration of the box 2 is greater than the gravity and the gravitational acceleration g, the material in the box 2 is thrown up and jumps forward along a parabolic trajectory. Each time the box 2 vibrates, the material is thrown up once. During the process of encountering the screen surface of the screen plate 21, the material smaller than the screen gap of the screen plate 21 passes through the screen surface, thereby achieving the purpose of grading and screening.

[0030] The quick-release cover 1 is used to seal the box 2 to prevent dust from flying during the screening process; it is also equipped with a transparent observation window to observe the working status and material adhesion inside the box 2 at any time; in order to cooperate with the operation of the automated production line and facilitate automatic loading, the quick-release cover 1 is equipped with a feed port; in order to facilitate manual opening and cleaning of materials, the quick-release cover 1 is also equipped with quick-release bolts, which can quickly and easily open the quick-release cover 1, which can meet the needs of on-site production and improve production efficiency.

[0031] The barrier wall 51 can also be the wall of the production plant. Since the explosives production plant is an F0 zone (hazardous area), the explosion-proof motor 52 cannot be used. The explosion-proof motor 52 is arranged outside the production plant and drives the vibrator 3 through the wall to generate a vibration source. This avoids the accumulation and ignition of explosive dust when the explosion-proof motor 52 is working. At the same time, the use of the explosion-proof motor 52 to drive the vibration source can enable the equipment to quickly pass through the resonance zone, reduce the impact of vibration on the equipment during start-up and shutdown, and greatly extend the service life of the equipment.

[0032] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, this utility model will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by this utility model.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic sieving device for explosives, characterized in that: It includes a quick-release cover (1), a housing (2), a vibrator (3), a bracket (4), and a partition wall transmission drive mechanism (5). The housing (2) is mounted on the bracket (4). The quick-release cover (1) is installed on the top of the housing (2). The housing (2) has a sieve plate (21) inside and a discharge port (22) at the bottom. The vibrator (3) is installed on the outside of the housing (2) and is connected to the partition wall transmission drive mechanism (5).

2. The automatic explosives screening device according to claim 1, characterized in that: The partition wall drive mechanism (5) includes an outer wall (51), an explosion-proof motor (52), a drive shaft (53), and a sheath (54). The explosion-proof motor (52) and the bracket (4) are respectively located on the left and right sides of the outer wall (51). The drive shaft (53) is rotatably mounted on the outer wall (51) through the sheath (54). The output end of the explosion-proof motor (52) is connected to one end of the drive shaft (53), and the other end of the drive shaft (53) is connected to the vibrator (3).

3. The automatic explosives screening device according to claim 2, characterized in that: The vibrator (3) includes a housing (31), a rotating shaft (32), an eccentric block (33), a rotating mounting base (34), and an elastic coupling (35). The housing (31) is fixedly installed on the outer wall of the box (2). The rotating shaft (32) is rotatably installed inside the housing (31) through the rotating mounting base (34). An eccentric block (33) is provided on the rotating shaft (32). The end of the rotating shaft (32) is connected to the transmission shaft (53) through the elastic coupling (35).

4. The automatic explosives screening device according to claim 3, characterized in that: The box (2) is provided with a bouncing ball mounting groove (23), and the bottom of the bouncing ball mounting groove (23) is attached to the sieve plate (21). A bouncing ball (6) is provided in the bouncing ball mounting groove (23).

5. The automatic explosives screening device according to claim 1, characterized in that: The bracket (4) is connected to the box (2) by a rubber spring (41).

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