Screening assembly and granulator

Abstract

The utility model relates to the technical field of powder coating granulation, in particular to a screening assembly and a granulator, the granulator comprises a first driving mechanism, a granulation pot and a screen mesh assembly, the screening assembly is arranged in a cavity of the granulation pot, the cavity is provided with an opening in one side, and the screening assembly comprises a mounting rod, a roll type screen mesh and a limiting piece; the mounting rod and a rotating shaft of the granulation pot are coaxially arranged; the limiting piece and the mounting rod can be matched to drive the roll type screen to rotate around the rotating shaft. According to the granulator disclosed by the utility model, screening can be carried out while granulation and powder coating are carried out through the screening assembly, qualified beads are collected to the mounting part and then are collected into the external collecting box, personnel participation is not needed, the beads with the same diameter are produced in a continuous assembly line operation mode, the qualification rate of the beads is ensured, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of powder coating and granulation technology, and in particular to a screening component and a granulator. Background Technology

[0002] Granulation and coating are among the most dangerous processes in fireworks production. The spherical particles that produce sound, light, color, and noise in fireworks products are called "bright beads" in the industry. Currently, the production method for bright beads involves adding a core of explosive to a rotating container. The core is moistened, coated with powder, and repeatedly rolled to form beads. When some beads in the container reach the required diameter, they are manually removed and screened. Beads smaller than the required diameter are returned to the container to be moistened and coated again to increase their size. Due to the extremely uneven particle size, oversized beads must be crushed and remade, resulting in low production efficiency. The entire granulation and screening process requires manual intervention. Each fireworks manufacturer has a huge demand for beads, and because it is all manual work, the labor intensity is extremely high. Cases of dust toxicity harming the physical and mental health of operators are numerous. Explosions sometimes occur, constantly threatening the lives of operators.

[0003] Therefore, it is necessary to provide a new screening component and granulator to solve the above-mentioned technical problems. Utility Model Content

[0004] The main purpose of this invention is to provide a screening component and a granulator, which aims to solve the problems of low production efficiency and low operational safety of existing granulators.

[0005] To achieve the above objectives, this utility model proposes a screening component, which is disposed within the cavity of a granulation pot. The cavity has an opening on one side and includes a mounting rod, a spiral screen, and a limiting member. The mounting rod is coaxially arranged with the rotation axis of the granulation pot. The spiral screen includes a mounting portion and an arc-shaped portion. The mounting portion is sleeved on the mounting rod and fixed to the mounting rod by the limiting member. The mounting portion communicates with an external collection box. One end of the arc-shaped portion is smoothly connected to the mounting portion, and the other end is clearance-fitted with the inner wall of the cavity. The arc-shaped portion can guide particles into the mounting portion. The limiting member and the mounting rod can cooperate to drive the spiral screen to rotate around the rotation axis.

[0006] Optionally, the mounting part is an arc structure with an arc angle of 240° to 270°; the mounting rod is fixedly disposed in the cavity, and the limiting member is threadedly connected to the end of the mounting rod near the opening, and cooperates with the inner wall of the cavity to clamp the rolled screen.

[0007] Optionally, both the mounting portion and the arc-shaped portion are provided with a plurality of evenly distributed sieve holes.

[0008] Optionally, the mounting part is provided with a plurality of evenly distributed sieve holes.

[0009] Optionally, the screening assembly further includes mounting rings, and the number of the spiral screens is two or more, with each spiral screen having its two ends connected to two mounting rings respectively, and the mounting portions of each spiral screen forming a cylindrical space for collecting qualified beads.

[0010] Optionally, the limiting member includes a mounting block and at least three limiting rods arranged circumferentially along the mounting block, the mounting block being threadedly connected to the mounting rods; the end of each limiting rod away from the mounting block forms a first limiting surface and a second limiting surface that are vertically connected, the first limiting surface abutting against the inner wall of the mounting block, and the second limiting surface abutting against the end of the mounting block.

[0011] In addition, this utility model also provides a granulator for coating bead cores with powder to form granules, including a first drive mechanism, a granulation pot, and the screening components described above.

[0012] The output end of the first drive mechanism is connected to the granulation pot through the first drive flange. The first drive mechanism can drive the granulation pot to rotate about a rotation axis that is set at an angle to the horizontal plane.

[0013] The opening is located at the end of the granulation pot away from the first driving mechanism, and the opening is used to introduce the bead core and the powder.

[0014] Optionally, the granulator further includes a first discharge structure, which is disposed at the end of the granulation pot away from the opening, and the first discharge structure is connected to the mounting part. The first discharge structure has a plurality of first discharge ports arranged circumferentially along the rotation axis. The mounting part is connected to an external collection box through the first discharge ports. The rotation axis is inclined towards the direction close to the first discharge ports. The first drive flange is disposed at the end of the first discharge structure away from the granulation pot.

[0015] Optionally, the granulator further includes a second discharge structure, a second drive flange, a second drive mechanism, and fasteners. One end of the second discharge structure is connected to the second drive mechanism via the second drive flange, and the other end is connected to the screening component. The second discharge structure has a disassembly groove and a plurality of second discharge ports arranged circumferentially along the rotation axis. The mounting part is connected to an external collection box via the second discharge port. The second drive mechanism is driven asynchronously with the first drive mechanism.

[0016] The rotation axis is inclined towards the direction of the second discharge port;

[0017] One end of the mounting rod protrudes from the disassembly groove and is slidably connected to the second discharge structure, while the other end is connected to the limiting member; the fastener is threadedly connected to the end of the mounting rod protruding from the disassembly groove so that the limiting member and the second discharge structure cooperate to clamp the rolled screen.

[0018] In this invention, the first driving mechanism drives the granulation pot to rotate along a rotating shaft at an angle to the horizontal plane, causing the bead cores inside the cavity to roll and coat with powder. Simultaneously, the mounting rod and limiting component work together to drive the rotating screen to rotate. While screening qualified beads, the beads are guided along the arc-shaped section into the mounting section during rotation, and then, under gravity, flow along the mounting section into the external collection box. This granulator can screen beads simultaneously during granulation and powder coating, collecting qualified beads into the mounting section and then into the external collection box. No human intervention is required, enabling continuous production of beads of the same diameter in a streamlined process, ensuring both the bead qualification rate and improving production efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the granulator in Embodiment 1 of this utility model;

[0021] Figure 2 This is a cross-sectional view of the granulator in Embodiment 1 of this utility model;

[0022] Figure 3 This is a front view of the granulator in Embodiment 1 of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the rolled screen in Embodiment 1 of this utility model;

[0024] Figure 5 This is another structural schematic diagram of the rolled screen in Embodiment 1 of this utility model;

[0025] Figure 6 This is a schematic diagram of the granulator in Embodiment 2 of this utility model;

[0026] Figure 7 This is a partial cross-sectional view of the granulator in Embodiment 2 of this utility model;

[0027] Figure 8This is a partial structural diagram of the screening component in Embodiment 2 of this utility model;

[0028] Figure 9 This is a cross-sectional view of the granulator in this utility model;

[0029] Figure 10 for Figure 9 Enlarged view of part I in the image.

[0030] Explanation of icon numbers:

[0031] 1. Granulation pot; 1.1. Cavity; 1.2. Opening; 2. Screening assembly; 2.1. Rolled screen; 2.1.2. Mounting part; 2.1.3. Arc-shaped part; 2.1.4. Screening hole; 2.2. Mounting rod; 2.3. Limiting component; 2.3.1. Mounting block; 2.3.2. Limiting rod; A1. First limiting surface; A2. Second limiting surface; 2.4. Mounting ring; 2.5. Cylindrical space; 3. First discharge structure; 3.1. First discharge port; 4. First drive flange; 5. Second discharge structure; 5.1. Second discharge port; 6. Second drive flange; 6.1. Disassembly groove; 7. Fastener.

[0032] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0033] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0034] This utility model proposes a screening component and a granulator, aiming to solve the problems of low production efficiency and low operational safety of existing granulators. Example 1

[0035] See Figures 1 to 5This embodiment provides a granulator for coating bead cores with powder to form granules. It includes a first drive mechanism, a granulation pot 1, and a screening assembly 2. The output end of the first drive mechanism is connected to the granulation pot 1 via a first drive flange 4. The first drive mechanism can drive the granulation pot 1 to rotate about a rotation axis set at an angle to the horizontal plane. A cavity 1.1 and an opening 1.2 communicating with the cavity 1.1 are formed inside the granulation pot 1. The opening 1.2 is located at the end of the granulation pot 1 away from the first drive mechanism and is used for introducing the bead cores and powder. The screening assembly 2 includes a mounting rod 2.2, a spiral screen 2.1, and a limiting member 2.3. The mounting rod 2.2 is coaxially arranged with the granulation pot 1; the spiral screen 2.1 includes a mounting part 2.1.2 and an arc-shaped part 2.1.3. The mounting part 2.1.2 is sleeved on the mounting rod 2.2 and fixed to the mounting rod 2.2 by the limiting member 2.3. The mounting part 2.1.2 is connected to the external collection box; one end of the arc-shaped part 2.1.3 is smoothly connected to the mounting part 2.1.2, and the other end is in clearance fit with the inner wall of the cavity 1.1. The arc-shaped part 2.1.3 can guide the particles into the mounting part 2.1.2; the limiting member 2.3 and the mounting rod 2.2 can cooperate to drive the spiral screen 2.1 to rotate around the rotating axis. During operation, the first drive mechanism drives the granulation pot 1 to rotate along a rotating shaft set at an angle to the horizontal plane, causing the bead cores in the cavity 1.1 to roll and coat with powder. At the same time, the mounting rod 2.2 and the limiting member 2.3 can cooperate to drive the rotating screen 2.1 to rotate. While screening qualified beads, the beads can be guided into the mounting part 2.1.2 along the arc-shaped part 2.1.3 during rotation, and then flow into the external collection box under the action of gravity along the mounting part 2.1.2. The granulator of this embodiment can screen while granulating and coating with powder, and collect qualified beads into the mounting part 2.1.2, and then into the external collection box. No human intervention is required, realizing a continuous production line operation to produce beads of the same diameter, which not only ensures the qualification rate of beads, but also improves production efficiency.

[0036] Specifically, the mounting part 2.1.2 is an arc structure with an arc angle of 240° to 270°; the mounting rod 2.2 is fixedly installed in the cavity 1.1, and the limiting member 2.3 is threadedly connected to the end of the mounting rod 2.2 near the opening 1.2, and cooperates with the inner wall of the cavity 1.1 to clamp the rolled screen 2.1. The mounting part 2.1.2 adopts an arc structure to facilitate the collection of qualified particles, and the mounting rod 2.2 is fixedly installed in the cavity 1.1 so that the granulation pot 1 can drive the rolled screen 2.1 to rotate synchronously through the mounting rod 2.2 and the limiting member 2.3, thereby facilitating the entry of particles into the mounting part 2.1.2 along the arc part 2.1.3 during powder coating and screening; the rolled screen 2.1 is clamped and fixed by the cooperation of the limiting member 2.3 and the inner wall of the cavity 1.1, which not only ensures a stable connection, but also facilitates disassembly and assembly, so as to replace screens with different particle sizes according to different production needs.

[0037] Furthermore, the granulator also includes a first discharge structure 3, which is located at the end of the granulation pot 1 furthest from the opening 1.2 and is connected to the mounting part 2.1.2. The first discharge structure 3 has multiple first discharge ports 3.1 arranged circumferentially along the rotation axis. The mounting part 2.1.2 is connected to an external collection box through the first discharge ports 3.1. The rotation axis is inclined towards the first discharge ports 3.1. A first drive flange 4 is located at the end of the first discharge structure 3 furthest from the granulation pot 1. The inclination of the rotation axis towards the first discharge ports 3.1 allows qualified granules in the mounting part 2.1.2 to flow into the first discharge ports 3.1 under gravity and enter the external collection box through the first discharge ports 3.1. This eliminates the need for manual collection of qualified granules, ensuring operator safety, and allows for a continuous supply of new granules and powder, enabling assembly line production.

[0038] In this embodiment, both the mounting part 2.1.2 and the arc-shaped part 2.1.3 are provided with a plurality of evenly distributed sieve holes 2.1.4. The sieve holes 2.1.4 on both the mounting part 2.1.2 and the arc-shaped part 2.1.3 extend the screening process time, thereby ensuring the screening effect and improving the pass rate of bead production.

[0039] In another example of this embodiment, the mounting part 2.1.2 is provided with a plurality of evenly distributed sieve holes 2.1.4. By providing sieve holes 2.1.4 only in the mounting part 2.1.2, the number of particles entering the mounting part 2.1.2 is increased, which is beneficial to improving production efficiency.

[0040] In addition, see Figure 9 and Figure 10 The limiting component 2.3 includes a mounting block 2.3.1 and at least three limiting rods 2.3.2 arranged circumferentially along the mounting block 2.3.1. The mounting block 2.3.1 is threadedly connected to the mounting rods 2.2. The end of the limiting rod 2.3.2 away from the mounting block 2.3.1 forms a first limiting surface A1 and a second limiting surface A2 that are perpendicularly connected. The first limiting surface A1 abuts against the inner wall of the mounting part 2.1.2, and the second limiting surface A2 abuts against the end of the mounting part 2.1.2. A channel for the passage of particles is formed between adjacent limiting rods 2.3.2, which limits the mounting part 2.1.2 while ensuring the normal passage of particles. The limiting component 2.3 limits the roll screen 2.1, and the disassembly process is simple, making it convenient for operators to replace the screen. Example 2

[0041] See also Figures 6 to 8The difference from Embodiment 1 is that the granulator further includes a second discharge structure 5, a second drive flange 6, a second drive mechanism, and fasteners 7. One end of the second discharge structure 5 is connected to the second drive mechanism through the second drive flange 6, and the other end is connected to the screening component 2. The second discharge structure 5 is provided with a disassembly groove 6.1 and a plurality of second discharge ports 5.1 arranged circumferentially along the rotation axis. The mounting part 2.1.2 is connected to the external collection box through the second discharge ports 5.1. The second drive mechanism is driven asynchronously with the first drive mechanism. The rotation axis is inclined in the direction close to the second discharge port 5.1. One end of the mounting rod 2.2 protrudes from the disassembly groove 6.1 and is slidably connected to the second discharge structure 5, and the other end is connected to the limiting member 2.3. The fasteners 7 are threadedly connected to the end of the mounting rod 2.2 protruding from the disassembly groove 6.1 so that the limiting member 2.3 and the second discharge structure 5 cooperate to clamp the rolled screen 2.1. Tightening the fastener 7 allows the second discharge structure 5 to cooperate with the limiting member 2.3 to clamp the rolled screen 2.1, thereby enabling the second drive mechanism to drive the second discharge structure 5 to rotate through the second drive flange 6, while simultaneously driving the rolled screen 2.1 to rotate synchronously for screening and discharge.

[0042] The screening assembly 2 also includes mounting rings 2.4, and two or more roll-up screens 2.1. Each roll-up screen 2.1 has its two ends connected to two mounting rings 2.4, and the mounting portions 2.1.2 of each roll-up screen 2.1 enclose a cylindrical space 2.5 for collecting qualified beads. Simultaneous screening by multiple roll-up screens 2.1 effectively improves screening efficiency, thereby increasing bead production efficiency. Preferably, the roll-up screens 2.1 are detachably connected to the mounting rings 2.4 to allow adjustment of the number of roll-up screens 2.1 according to production needs.

[0043] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A screening component disposed within a cavity (1.1) of a granulation pan (1), said cavity (1.1) having an opening (1.2) on one side, characterized in that, The assembly includes a mounting rod (2.2), a spiral sieve (2.1), and a limiting member (2.3). The mounting rod (2.2) is coaxially arranged with the rotating shaft of the granulation pot (1). The spiral sieve (2.1) includes a mounting part (2.1.2) and an arc-shaped part (2.1.3). The mounting part (2.1.2) is sleeved on the mounting rod (2.2) and fixedly mounted on the mounting rod (2.2) by the limiting member (2.3). The mounting part (2.1.2) is connected to the external collection box; one end of the arc-shaped part (2.1.3) is smoothly connected to the mounting part (2.1.2), and the other end is in clearance fit with the inner wall of the cavity (1.1). The arc-shaped part (2.1.3) can guide the beads into the mounting part (2.1.2); the limiting member (2.3) and the mounting rod (2.2) can cooperate to drive the roll screen (2.1) to rotate around the rotating axis.

2. The screening component as described in claim 1, characterized in that, The mounting part (2.1.2) is an arc structure with an arc angle of 240° to 270°; the mounting rod (2.2) is fixedly installed in the cavity (1.1), and the limiting member (2.3) is threadedly connected to one end of the mounting rod (2.2) near the opening (1.2) and cooperates with the inner wall of the cavity (1.1) to clamp the rolled screen (2.1).

3. The screening component as described in claim 2, characterized in that, Both the mounting part (2.1.2) and the arc-shaped part (2.1.3) are provided with a plurality of evenly distributed sieve holes (2.1.4).

4. The screening component as described in claim 3, characterized in that, The mounting part (2.1.2) is provided with a plurality of evenly distributed sieve holes (2.1.4).

5. The screening component as described in claim 3, characterized in that, The screening component (2) further includes a mounting ring (2.4), and the number of the spiral screens (2.1) is two or more. The two ends of each spiral screen (2.1) are respectively connected to the two mounting rings (2.4), and the mounting part (2.1.2) of each spiral screen (2.1) encloses a cylindrical space (2.5) for collecting qualified beads.

6. The screening component according to any one of claims 1 to 5, characterized in that, The limiting member (2.3) includes a mounting block (2.3.1) and at least three limiting rods (2.3.2) arranged circumferentially along the mounting block (2.3.1). The mounting block (2.3.1) is threadedly connected to the mounting rods (2.2). The end of the limiting rod (2.3.2) away from the mounting block (2.3.1) forms a first limiting surface (A1) and a second limiting surface (A2) that are vertically connected. The first limiting surface (A1) abuts against the inner wall of the mounting block (2.3.1), and the second limiting surface (A2) abuts against the end of the mounting block (2.3.1).

7. A granulator for coating bead cores with powder to form granules, characterized in that, Includes a first drive mechanism, a granulation pot (1), and a screening component (2) as described in claim 6. The output end of the first driving mechanism is connected to the granulation pot (1) through the first driving flange (4). The first driving mechanism can drive the granulation pot (1) to rotate around a rotation axis that is set at an angle to the horizontal plane. The opening (1.2) is located at one end of the granulation pot (1) away from the first driving mechanism, and the opening (1.2) is used to introduce the bead core and the powder.

8. The granulator as described in claim 7, characterized in that, The granulator further includes a first discharge structure (3), which is located at the end of the granulation pot (1) away from the opening (1.2). The first discharge structure (3) is connected to the mounting part (2.1.2), and the first discharge structure (3) has a plurality of first discharge ports (3.1) arranged circumferentially along the rotation axis. The mounting part (2.1.2) is connected to an external collection box through the first discharge ports (3.1). The rotation axis is inclined towards the first discharge port (3.1). The first drive flange (4) is located at the end of the first discharge structure (3) away from the granulation pot (1).

9. The granulator as described in claim 7, characterized in that, The granulator further includes a second discharge structure (5), a second drive flange (6), a second drive mechanism, and fasteners (7). One end of the second discharge structure (5) is connected to the second drive mechanism through the second drive flange (6), and the other end is connected to the screening component (2). The second discharge structure (5) is provided with a disassembly groove (6.1) and a plurality of second discharge ports (5.1) arranged circumferentially along the rotation axis. The mounting part (2.1.2) is connected to an external collection box through the second discharge port (5.1). The second drive mechanism is driven asynchronously with the first drive mechanism. The rotation axis is inclined towards the direction of the second discharge port (5.1); One end of the mounting rod (2.2) protrudes from the disassembly groove (6.1) and is slidably connected to the second discharge structure (5), while the other end is connected to the limiting member (2.3); the fastener (7) is threadedly connected to the end of the mounting rod (2.2) protruding from the disassembly groove (6.1) so that the limiting member (2.3) and the second discharge structure (5) cooperate to clamp the rolled screen (2.1).

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