A granulating device for shot special powder
By designing a dedicated gunpowder granulation device for nail guns with rotating frame and screening components, the problem of frequent machine downtime caused by improper screening of gunpowder particles was solved, achieving efficient screening of gunpowder particles and continuous production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI GUOTAI JINGU TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-26
Smart Images

Figure CN224411665U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gunpowder granulation technology for nail guns, and in particular to a gunpowder granulation device for nail guns. Background Technology
[0002] The integrated nail uses built-in gunpowder as a power source. A spring mechanism on the integrated nail fastener drives the firing pin to pierce the ignition powder inside the nail. Intense friction ignites the propellant, generating high-pressure gas that propels the nail at high speed, firmly embedding it into the substrate (such as concrete or steel). This process eliminates the drilling and pouring steps required in traditional fastening methods, greatly improving construction efficiency and convenience.
[0003] In the existing technology, some of the gunpowder granules produced by gunpowder granulation machines are oversized. The use of oversized gunpowder granules can easily cause misfires. Furthermore, the screening of oversized granules requires constant cleaning, which leads to repeated machine shutdowns and production interruptions. Utility Model Content
[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a gunpowder granulation device specifically for nail guns.
[0005] To achieve this objective, the present invention adopts the following technical solution: a gunpowder granulation device for nail guns, comprising a support frame and a granulator body, an installation cylinder fixedly installed on the top of the support frame, a feed hood fixedly inserted into the side wall of the installation cylinder, and the feed hood being connected to the discharge port of the granulator body, a rotating frame assembly rotatably arranged inside the installation cylinder, a drive assembly for driving the rotating frame assembly to rotate on the side wall of the installation cylinder, a screening assembly being snapped into the drive assembly, a discharge hood fixedly inserted into the bottom of the installation cylinder, and a collection box placed on the bottom inner wall of the support frame, with the collection box located directly below the discharge hood.
[0006] Preferably, the rotating frame assembly includes a rotating ring one and a rotating ring two, which are respectively rotatably installed in two rotating grooves on the inner wall of the mounting cylinder. A plurality of connecting columns are evenly fixedly installed on one side of the rotating ring one, and the inner wall of the rotating ring two is fixedly connected to the connecting columns.
[0007] Preferably, each of the connecting columns is provided with a snap-fit groove.
[0008] Preferably, the drive assembly includes a drive gear rotatably mounted on the inner side wall of the mounting cylinder and an inner gear ring fixedly sleeved on the inner ring of the rotating ring. The inner gear ring meshes with the drive gear. A drive motor is fixedly mounted on the outer side wall of the mounting cylinder. The output end of the drive motor passes through the side wall of the mounting cylinder and is fixedly connected to the drive gear.
[0009] Preferably, the screening component includes a screening cylinder, and a plurality of snap-fit posts are uniformly fixedly installed on the periphery of the screening cylinder, and the snap-fit posts match the snap-fit grooves.
[0010] Preferably, the screening cylinder has a plurality of screening holes evenly distributed around its periphery, and a through-hole is provided on one side of the screening cylinder, with the feed hood passing through the through-hole and extending into the interior of the screening cylinder.
[0011] Preferably, a handle is fixedly installed on the side of the screening cylinder away from the inlet.
[0012] The beneficial effects of this utility model are as follows: The gunpowder particles produced by the granulator body enter the screening cylinder through the feed hood. The drive motor is started, which drives the drive gear to rotate on the inner side wall of the mounting cylinder, thereby driving the internal gear ring meshing with the drive gear to rotate, and then driving the rotating frame assembly and the screening cylinder to rotate. Under the action of centrifugal force, the gunpowder particles move circumferentially towards the screening cylinder. Particles that meet the specifications fall out through the screening holes and into the collection box through the discharge hood. Particles that do not meet the specifications are retained in the screening cylinder. The remaining oversized particles can be extracted from the screening cylinder for cleaning after the machine is stopped. Through these settings, this device can not only screen the specifications of gunpowder particles to prevent the use of gunpowder particles that do not meet the specifications, but also allow the oversized particles retained in the screening cylinder to accumulate and be cleaned up after the machine is stopped, avoiding frequent interruptions in production. Attached Figure Description
[0013] Figure 1 This is a front view of the overall structure of an embodiment of the gunpowder granulation device for nail guns according to this utility model;
[0014] Figure 2 This is a front sectional view of the overall structure of an embodiment of a gunpowder granulation device for nail gunning according to this utility model;
[0015] Figure 3 This is a side sectional view of the overall structure of an embodiment of a gunpowder granulation device for nail guns according to this utility model;
[0016] Figure 4 This is a schematic diagram of the overall structure of the rotating frame assembly and the screening assembly in the disassembled state in an embodiment of a gunpowder granulation device for nail gunning according to this utility model.
[0017] Reference numerals: 1. Support frame; 11. Mounting cylinder; 2. Rotating frame assembly; 21. Rotating ring one; 22. Connecting column; 23. Snap-fit groove; 24. Rotating ring two; 3. Drive assembly; 31. Internal gear ring; 32. Drive gear; 33. Drive motor; 4. Screening assembly; 41. Screening cylinder; 42. Snap-fit column; 43. Screening hole; 44. Through port; 45. Handle; 5. Granulator body; 6. Feed hood; 7. Discharge hood; 8. Collection box. Detailed Implementation
[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0019] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0021] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0022] Example 1
[0023] like Figure 1-4As shown, the present invention proposes a gunpowder granulation device for nail guns, comprising a support frame 1 and a granulator body 5. An installation cylinder 11 is fixedly installed on the top of the support frame 1, and a feed hood 6 is fixedly inserted into the side wall of the installation cylinder 11. The feed hood 6 is connected to the discharge port of the granulator body 5. A rotating frame assembly 2 is rotatably arranged inside the installation cylinder 11. A drive assembly 3 for driving the rotating frame assembly 2 to rotate is arranged on the side wall of the installation cylinder 11. A screening assembly 4 is snapped into the inside of the drive assembly 3. A discharge hood 7 is fixedly inserted into the bottom of the installation cylinder 11. A collection box 8 is placed on the bottom inner wall of the support frame 1, and the collection box 8 is located directly below the discharge hood 7.
[0024] In this embodiment, the rotating frame assembly 2 includes a first rotating ring 21 and a second rotating ring 24, which are respectively rotatably installed in two rotating grooves on the inner wall of the mounting cylinder 11. Multiple connecting posts 22 are evenly fixedly installed on one side of the first rotating ring 21. The inner wall of the second rotating ring 24 is fixedly connected to the connecting posts 22. This arrangement ensures that the first rotating ring 21, the second rotating ring 24, and the multiple connecting posts 22 together form a stable annular frame structure, ensuring that the screening assembly 4 maintains dynamic balance during high-speed rotation and avoiding eccentric vibration. Each connecting post 22 has a locking groove 23. This arrangement provides standardized locking points, enabling quick and precise assembly and disassembly of the screening assembly 4. Positioning; the drive assembly 3 includes a drive gear 32 rotatably mounted on the inner wall of the mounting cylinder 11 and an inner gear ring 31 fixedly sleeved on the inner ring of the rotating ring 21. The inner gear ring 31 and the drive gear 32 mesh. A drive motor 33 is fixedly mounted on the outer wall of the mounting cylinder 11. The output end of the drive motor 33 passes through the side wall of the mounting cylinder 11 and is fixedly connected to the drive gear 32. With this arrangement, starting the drive motor 33 can drive the drive gear 32 to rotate on the inner wall of the mounting cylinder 11, thereby driving the inner gear ring 31 meshing with the drive gear 32 to rotate, and then driving the rotating frame assembly 2 to rotate. The drive motor 33 is an explosion-proof motor.
[0025] Example 2
[0026] like Figure 1-4As shown, the present invention proposes a gunpowder granulation device for nail guns. Compared with Embodiment 1, this embodiment further includes a screening component 4 comprising a screening cylinder 41. Multiple locking posts 42 are uniformly fixedly installed around the periphery of the screening cylinder 41, and the locking posts 42 match the locking grooves 23. Through this arrangement, the screening cylinder 41 can be installed inside the rotating frame assembly 2 via the locking engagement of the multiple locking posts 42 and the locking grooves 23, and rotate synchronously with the rotating frame assembly 2. The screening component 4 and the rotating frame assembly 2 are made of antistatic and spark-proof materials (such as specific engineering plastics, conductive materials, or materials that have undergone treatment). The screening cylinder 41 is made of a fine metal. Multiple screening holes 43 are evenly distributed around its periphery. A through-hole 44 is provided on one side of the screening cylinder 41, and the feed hood 6 passes through the through-hole 44 and extends into the interior of the screening cylinder 41. With this setting, the aperture of the screening holes 43 is set according to the standard size of the gunpowder particles to ensure that the substandard particles are intercepted. The gunpowder output from the granulator enters the interior of the screening cylinder 41 directly through the feed hood 6. A handle 45 is fixedly installed on the side of the screening cylinder 41 away from the through-hole 44. With this setting, it is convenient for the operator to hold the handle 45 and pull the screening cylinder 41 axially to achieve quick maintenance and replacement.
[0027] Working principle: The gunpowder particles produced by the granulator body 5 enter the screening cylinder 41 through the feed hood 6. The drive motor 33 is started to drive the drive gear 32 to rotate on the inner wall of the mounting cylinder 11, thereby driving the internal gear ring 31 meshing with the drive gear 32 to rotate, which in turn drives the rotating frame assembly 2 and the screening cylinder 41 to rotate. Under the action of centrifugal force, the gunpowder particles move circumferentially towards the screening cylinder 41. Particles that meet the specifications fall out through the screening hole 43 and fall into the collection box 8 through the discharge hood 7. Particles that do not meet the specifications are retained in the screening cylinder. The remaining oversized particles can be removed from the screening cylinder 41 for cleaning after the machine is stopped.
[0028] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A granulation device for gunpowder used in nail gunning, comprising a support frame (1) and a granulator body (5), characterized in that: An installation cylinder (11) is fixedly installed on the top of the support frame (1). A feed hood (6) is fixedly inserted into the side wall of the installation cylinder (11), and the feed hood (6) is connected to the discharge port of the granulator body (5). A rotating frame assembly (2) is rotatably installed inside the installation cylinder (11). A drive assembly (3) for driving the rotating frame assembly (2) to rotate is installed on the side wall of the installation cylinder (11). A screening assembly (4) is snapped into the inside of the drive assembly (3). A discharge hood (7) is fixedly inserted into the bottom of the installation cylinder (11). A collection box (8) is placed on the bottom inner wall of the support frame (1), and the collection box (8) is located directly below the discharge hood (7).
2. The shot special powder granulating device according to claim 1, wherein The rotating frame assembly (2) includes a rotating ring one (21) and a rotating ring two (24) respectively rotatably installed in two rotating grooves on the inner wall of the mounting cylinder (11). Multiple connecting columns (22) are evenly fixedly installed on one side of the rotating ring one (21), and the inner wall of the rotating ring two (24) is fixedly connected to the connecting columns (22).
3. The shot special powder granulating device according to claim 2, wherein Each of the connecting columns (22) is provided with a snap-fit groove (23).
4. The shot specific propellant prilling device of claim 2, wherein, The drive assembly (3) includes a drive gear (32) rotatably mounted on the inner side wall of the mounting cylinder (11) and an inner gear ring (31) fixedly sleeved on the inner ring of the rotating ring (21). The inner gear ring (31) and the drive gear (32) mesh. A drive motor (33) is fixedly mounted on the outer side wall of the mounting cylinder (11). The output end of the drive motor (33) passes through the side wall of the mounting cylinder (11) and is fixedly connected to the drive gear (32).
5. The shot specific propellant prilling device of claim 3, wherein, The screening component (4) includes a screening cylinder (41), and multiple snap-fit posts (42) are uniformly fixedly installed on the periphery of the screening cylinder (41), and the snap-fit posts (42) are matched with the snap-fit grooves (23).
6. The shot specific propellant prilling device of claim 5, wherein, The screening cylinder (41) has a plurality of screening holes (43) evenly distributed around its periphery. A through-hole (44) is provided on one side of the screening cylinder (41), and the feed hood (6) passes through the through-hole (44) and extends into the interior of the screening cylinder (41).
7. The gunpowder granulation device for nail gunning according to claim 6, characterized in that, A handle (45) is fixedly installed on the side of the screening cylinder (41) away from the inlet (44).