A granule screening and recycling device

Abstract

This utility model discloses a granule screening and recovery device, including a frame, a hopper, a mounting body, a sieve plate, and a vibrating device. The hopper is connected to one side of the top of the frame, the mounting body is connected to one side of the bottom of the frame, the sieve plate is connected to the mounting body, and the vibrating device is connected to the frame and used to drive the mounting body to vibrate. The sieve plate includes an orifice plate, a connecting frame, an adjusting head, a telescopic connecting rod, and an intermediate cylinder. The orifice plate has several adjusting holes, the connecting frame is located below the orifice plate, the two ends of the telescopic connecting rod are connected to the orifice plate and the connecting frame respectively, the adjusting head is fixedly connected to the connecting frame, and the top side of the adjusting head has a frustum-shaped cross-section, extending into the adjusting hole, forming a screening gap between the adjusting head and the adjusting hole. The connecting frame and the orifice plate are also connected by bolts, and the intermediate cylinder is sleeved outside the bolts and located between the connecting frame and the orifice plate. By changing the intermediate cylinder of different heights, the screening gap can be stably adjusted, facilitating the screening and recovery of granules.

Description

Technical Field

[0001] This utility model belongs to the field of screening equipment technology, specifically a granule screening and recovery device. Background Technology

[0002] In the chemical, pharmaceutical, and food processing industries, particle screening is a crucial step in product grading and recycling. With increasing industrial automation, higher demands are being placed on the precision, efficiency, and versatility of particle screening equipment. Traditional fixed-screen equipment is no longer sufficient to meet the dynamic screening needs of particles of various sizes. For example, in the pharmaceutical industry, different dosage forms (such as tablets and capsules) have significantly different requirements for the particle size distribution of active pharmaceutical ingredients, necessitating frequent screen replacements to adapt to production needs.

[0003] Traditional screens have fixed apertures. Changing the screened particle size requires stopping the machine, disassembling and replacing the entire screen assembly, which is cumbersome and time-consuming. Some adjustable screen devices use hydraulic or electric adjustment, but these are complex in structure, expensive, and require an external power source, increasing energy consumption and the risk of failure. These problems result in inefficiency of existing equipment when screening multiple particle sizes, failing to meet the demands of modern industry for rapid switching between production specifications.

[0004] Patent application CN202420545175.X discloses a tension-adjustable elastic vibrating screen, which adjusts the screen tension and thus the screen aperture size by changing the screen aperture size through a bolt adjustment mechanism. While this technology achieves dynamic adjustment of the screen aperture, changes in screen tension can easily lead to localized stress concentration, shortening the screen's lifespan. Furthermore, the screening effect is poor when the tension is low. Utility Model Content

[0005] The purpose of this invention is to provide a granule screening and recovery device to solve the following technical problems mentioned in the background art:

[0006] The screen mesh size of existing screening machines is fixed, making it difficult to adjust according to the material to be screened.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] A granule screening and recovery device includes a frame, a hopper, a mounting body, a screen plate, and a vibrating device. The hopper is connected to one side of the top of the frame, the mounting body is connected to one side of the bottom of the frame, the screen plate is connected to the mounting body, and the vibrating device is connected to the frame and used to drive the mounting body to vibrate. The screen plate includes an orifice plate, a connecting frame, an adjusting head, a telescopic connecting rod, and an intermediate cylinder. The orifice plate is provided with several adjusting holes, the connecting frame is located below the orifice plate, the two ends of the telescopic connecting rod are connected to the orifice plate and the connecting frame respectively, the adjusting head is fixed to the connecting frame, the top side of the adjusting head has a frustum-shaped cross section, the top side of the adjusting head extends into the adjusting hole, and a screening gap is formed between the adjusting head and the adjusting hole. The connecting frame and the orifice plate are also connected by bolts, and the intermediate cylinder is sleeved outside the bolts and located between the connecting frame and the orifice plate.

[0009] Furthermore, the vibration device includes a drive motor, a rotating rod, and a connector; the mounting body is movably connected to the frame; the rotating rod is rotatably connected to the frame, the middle part of the rotating rod has a U-shaped structure, the connector is fixedly connected to the mounting body, and the protruding part of the U-shaped structure in the middle of the rotating rod is rotatably connected to the connector; the drive motor is fixedly connected to the frame, and the drive motor is used to drive the rotating rod to rotate.

[0010] Furthermore, a connector is provided between the mounting body and the frame, with both ends of the connector being hinged to the mounting body and the frame, respectively.

[0011] Furthermore, a duct is fixed to one side of the frame, and an air outlet is provided on one side of the duct, facing the screen plate; a fan blade is rotatably connected inside the duct, and the fan blade is also connected to a drive motor, which drives the fan blade to rotate.

[0012] Furthermore, the mounting body is tilted, and a fine material discharge trough is provided on one side of the mounting body.

[0013] Furthermore, the screen plate on the mounting body is inclined, and a large material discharge trough is provided on the side of the mounting body near the screen plate.

[0014] Furthermore, the connecting frame is a crisscrossing frame structure.

[0015] Furthermore, the telescopic connecting rod includes an inner rod and an outer cylinder. One side of the inner rod is movably connected inside the outer cylinder, the top of the inner rod is fixedly connected to the orifice plate, and the bottom of the outer cylinder is fixedly connected to the connecting frame.

[0016] Furthermore, the diameter on the top side of the adjustment head is larger than the diameter on the side closer to the bottom.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention determines the distance between the orifice plate and the connecting frame by the height of the intermediate cylinder, which in turn determines the insertion depth of the adjusting head. The insertion depth of the frustum-shaped adjusting head determines the size of the gap. By changing the intermediate cylinders of different heights, the distance between the connecting frame and the orifice plate can be precisely controlled, thereby changing the insertion depth of the frustum-shaped adjusting head in the adjusting hole. Ultimately, this achieves stable adjustment of the screening gap, facilitating the screening and recycling of granules. Attached Figure Description

[0019] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0020] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the sieve plate structure of this utility model;

[0022] Figure 4 This is a cross-sectional schematic diagram of the sieve plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the telescopic connecting rod of this utility model.

[0024] The markings in the diagram are: 1-Frame, 2-Connector, 3-Large material discharge trough, 4-Mounting body, 5-Screen plate, 6-Fan blade, 7-Connector head, 8-Rotating rod, 9-Air duct, 10-Drive motor, 11-Hopper, 12-Fine material discharge trough, 13-Air outlet, 14-Adjusting head, 15-Orifice plate, 16-Connecting frame, 17-Bolt, 18-Screening gap, 19-Telescopic connecting rod, 20-Intermediate cylinder, 21-Adjusting hole, 22-Inner rod, 23-Outer cylinder. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example:

[0027] A granule screening and recovery device, such as Figure 1 As shown, it includes a frame 1, a hopper 11, a mounting body 4, a screen plate 5, and a vibrating device; the hopper 11 is connected to one side of the top of the frame 1, the mounting body 4 is connected to one side of the bottom of the frame 1, the screen plate 5 is connected to the mounting body 4, and the vibrating device is connected to the frame 1 and used to drive the mounting body 4 to vibrate; as shown Figure 3 as well as Figure 4As shown, the sieve plate 5 includes an orifice plate 15, a connecting frame 16, an adjusting head 14, a telescopic connecting rod 19, and an intermediate cylinder 20. The orifice plate 15 is provided with a plurality of adjusting holes 21. The connecting frame 16 is located below the orifice plate 15. The two ends of the telescopic connecting rod 19 are respectively connected to the orifice plate 15 and the connecting frame 16. The adjusting head 14 is fixedly connected to the connecting frame 16. The cross-section of one side of the top of the adjusting head 14 is frustum-shaped. One side of the top of the adjusting head 14 extends into the adjusting hole 21, forming a screening gap 18 between the adjusting head 14 and the adjusting hole 21. The connecting frame 16 is also connected to the orifice plate 15 by bolts 17. The intermediate cylinder 20 is sleeved outside the bolts 17 and located between the connecting frame 16 and the orifice plate 15.

[0028] The frame 1 serves as the supporting framework of the equipment, fixing all components such as the hopper 11, mounting body 4, and vibrating device to ensure overall structural stability. The hopper 11 stores the granular raw materials to be screened and conveys them to the screen plate 5 below through its own structure. The mounting body 4 connects the screen plate 5 to the frame 1 and acts as the force transmission structure for the vibrating device, transferring vibration energy to the screen plate 5. The vibrating device drives the mounting body 4 and screen plate 5 to vibrate at high frequency, causing the particles on the screen plate 5 to disperse and move, thus achieving screening. The screen plate 5 forms a screening gap 18 through its own structure, separating materials based on particle size differences; the screening gap 18 can also be adjusted to adapt to the screening requirements of different particles. It should also be noted that a set of intermediate cylinders 20 is provided, each with a different height. By replacing the intermediate cylinders 20 with different heights, the distance between the connecting frame 16 and the perforated plate 15 is precisely controlled, thereby changing the insertion depth of the frustum-shaped adjusting head 14 (larger at the top and smaller at the bottom) within the adjusting hole 21, ultimately achieving stable adjustment of the screening gap 18.

[0029] The adjustment mechanism of the sieve plate 5 is based on the height of the intermediate cylinder 20 determining the distance between the perforated plate 15 and the connecting frame 16. This distance determines the insertion depth of the adjusting head 14, and the insertion depth of the frustum-shaped adjusting head 14 determines the size of the gap. By replacing the intermediate cylinder 20 with different heights, the distance between the connecting frame 16 and the perforated plate 15 can be precisely controlled, thereby changing the insertion depth of the frustum-shaped adjusting head 14 within the adjusting hole 21. Ultimately, this achieves stable adjustment of the screening gap 18, facilitating the screening and recycling of granules.

[0030] In a preferred embodiment, such as Figure 1As shown, the vibration device includes a drive motor 10, a rotating rod 8, and a connector 7; the mounting body 4 is movably connected to the frame 1; the rotating rod 8 is rotatably connected to the frame 1, the middle part of the rotating rod 8 has a U-shaped structure, the connector 7 is fixedly connected to the mounting body 4, and the protruding part of the U-shaped structure in the middle of the rotating rod 8 is rotatably connected to the connector 7; the drive motor 10 is fixedly connected to the frame 1, and the drive motor 10 is used to drive the rotating rod 8 to rotate. In the vibration device, the drive motor 10 is the power source, which drives the rotating rod 8 to rotate around the frame 1 during operation. The protruding part of the U-shaped structure in the middle of the rotating rod 8 is rotatably connected to the connector 7 on the mounting body 4. Since the mounting body 4 is movably connected to the frame 1, when the rotating rod 8 rotates, the U-shaped structure will apply a periodic pushing and pulling force to the mounting body 4 through the connector 7, causing the mounting body 4 and the connected screen plate 5 to vibrate continuously. This vibration can disperse, roll and move the particles on the screen plate 5, avoiding accumulation and blockage, while promoting the passage of particles that meet the gap size through the screen plate 5 to achieve screening. The U-shaped structure design can stably transmit power and ensure uniform vibration frequency, thereby improving screening efficiency.

[0031] In a preferred embodiment, such as Figure 1 As shown, a connector 2 is provided between the mounting body 4 and the frame 1, with both ends of the connector 2 hinged to the mounting body 4 and the frame 1 respectively. The hinged connection of the connector 2 to the mounting body 4 and the frame 1 allows for a flexible connection between the mounting body 4 and the frame 1. This provides support for the mounting body 4 and allows it to swing flexibly along the hinge axis under the influence of the vibration device. This avoids rigid collisions or jamming between the mounting body 4 and the frame 1 during vibration, ensuring smooth transmission of vibration to the screen plate 5. Simultaneously, it reduces the impact of vibration on the frame 1, improving the overall stability and service life of the equipment.

[0032] In a preferred embodiment, such as Figure 1 as well as Figure 2 As shown, a duct 9 is fixed to one side of the frame 1, and an air outlet 13 is provided on one side of the duct 9, facing the screen plate 5. A fan blade 6 is rotatably connected inside the duct 9, and the fan blade 6 is also connected to a drive motor 10, which drives the fan blade 6 to rotate. The duct 9 generates airflow by driving the fan blade 6 to rotate through the drive motor 10, which is blown onto the screen plate 5 through the air outlet 13. This can disperse the particles accumulated on the screen plate 5 and prevent the particles from sticking together and clogging the screening gap 18 due to moisture or static electricity. At the same time, the airflow can help smaller particles pass through the gap, accelerating the screening and separation, and no additional power source is required.

[0033] In a preferred embodiment, such as Figure 1 As shown, the mounting body 4 is inclined, and a fine material discharge trough 12 is provided on one side of the mounting body 4. The inclined mounting body 4 can assist the particles to move along the surface of the screen plate 5 with the help of gravity, avoiding particle retention; the fine material discharge trough 12 is used to collect small particles falling from the screening gap 18 of the screen plate 5 and discharge them in a concentrated manner, realizing the directional recycling of small particles and improving collection efficiency.

[0034] In a preferred embodiment, such as Figure 2 As shown, the screen plate 5 on the mounting body 4 is inclined, and a large material discharge trough 3 is provided on the side of the mounting body 4 near the screen plate 5. The inclined screen plate 5 can push large particles that have not passed through the screening gap 18 to the lower end under the combined action of vibration and gravity; the large material discharge trough 3 is used to receive and centrally discharge these large particles, realizing the directional collection and recycling of large particles, avoiding the accumulation of large particles on the screen plate 5 and affecting subsequent screening, and improving the overall screening continuity.

[0035] In a preferred embodiment, the connecting frame 16 is a crisscross frame structure. The crisscross frame structure of the connecting frame 16 can not only stably support the perforated plate 15 and the adjusting head 14, but also prevent small particles falling from the gaps in the sieve plate 5 from being blocked through the hollow space formed by the crisscross, thus ensuring that small particles can pass through smoothly and guaranteeing the smooth recycling of small particles.

[0036] In a preferred embodiment, such as Figure 5 As shown, the telescopic connecting rod 19 includes an inner rod 22 and an outer cylinder 23. One side of the inner rod 22 is movably connected inside the outer cylinder 23. The top of the inner rod 22 is fixedly connected to the orifice plate 15, and the bottom of the outer cylinder 23 is fixedly connected to the connecting frame 16. The inner rod 22 of the telescopic connecting rod 19 is movably connected inside the outer cylinder 23 and can freely extend and retract according to the change in the distance between the orifice plate 15 and the connecting frame 16. The telescopic connecting rod 19 is used to prevent the orifice plate 15 and the connecting frame 16 from tilting.

[0037] In a preferred embodiment, such as Figure 4 As shown, the diameter of the top side of the adjusting head 14 is larger than the diameter of the side near the bottom, which is the inverted frustum structure. The side of the inverted frustum can form a uniform annular gap to ensure screening accuracy; at the same time, the inclined side can guide particles stuck in the gap to slide to the side and detach during vibration, reducing blockage and improving screening smoothness.

[0038] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., 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. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A granule screening and recovery device, characterized in that: It includes a frame (1), a hopper (11), a mounting body (4), a screen plate (5), and a vibrating device; the hopper (11) is connected to the top side of the frame (1), the mounting body (4) is connected to the bottom side of the frame (1), the screen plate (5) is connected to the mounting body (4), and the vibrating device is connected to the frame (1) and used to drive the mounting body (4) to vibrate; The sieve plate (5) includes an orifice plate (15), a connecting frame (16), an adjusting head (14), a telescopic connecting rod (19), and an intermediate cylinder (20). The orifice plate (15) is provided with several adjusting holes (21). The connecting frame (16) is located below the orifice plate (15). The two ends of the telescopic connecting rod (19) are connected to the orifice plate (15) and the connecting frame (16) respectively. The adjusting head (14) is fixedly connected to the connecting frame (16). The cross-section of the top side of the adjusting head (14) is frustum-shaped. The top side of the adjusting head (14) extends into the adjusting hole (21). A screening gap (18) is formed between the adjusting head (14) and the adjusting hole (21). The connecting frame (16) is also connected to the orifice plate (15) by bolts (17). The intermediate cylinder (20) is sleeved outside the bolts (17) and located between the connecting frame (16) and the orifice plate (15).

2. The granule screening and recovery apparatus according to claim 1, wherein: The vibration device includes a drive motor (10), a rotating rod (8), and a connector (7); the mounting body (4) is movably connected to the frame (1); the rotating rod (8) is rotatably connected to the frame (1), the middle part of the rotating rod (8) is a U-shaped structure, the connector (7) is fixedly connected to the mounting body (4), and the protruding part of the U-shaped structure in the middle of the rotating rod (8) is rotatably connected to the connector (7); the drive motor (10) is fixedly connected to the frame (1), and the drive motor (10) is used to drive the rotating rod (8) to rotate.

3. A granule screening and recovery apparatus according to claim 2, wherein: A connector (2) is provided between the mounting body (4) and the frame (1), and the two ends of the connector (2) are hinged to the mounting body (4) and the frame (1) respectively.

4. The granule screening and recovery apparatus according to claim 2, wherein: A duct (9) is fixed to one side of the frame (1), and an air outlet (13) is provided on one side of the duct (9), with the air outlet (13) facing the screen plate (5); a fan blade (6) is rotatably connected inside the duct (9), and the fan blade (6) is also connected to the drive motor (10), which drives the fan blade (6) to rotate.

5. The granule screening and recovery apparatus of claim 1, wherein: The mounting body (4) is inclined, and a fine material discharge trough (12) is provided on one side of the mounting body (4).

6. The granule screening and recovery apparatus of claim 1, wherein: The screen plate (5) on the mounting body (4) is set at an angle, and a large material discharge trough (3) is provided on the side of the mounting body (4) near the screen plate (5).

7. The granule screening and recovery apparatus of claim 1, wherein: The connecting frame (16) is a cross-shaped frame structure (1).

8. The granule screening and recovery apparatus of claim 1, wherein: The telescopic connecting rod (19) includes an inner rod (22) and an outer cylinder (23). One side of the inner rod (22) is movably connected inside the outer cylinder (23). The top of the inner rod (22) is fixedly connected to the orifice plate (15), and the bottom of the outer cylinder (23) is fixedly connected to the connecting frame (16).

9. The granule screening and recovery apparatus of claim 1, wherein: The diameter of the top side of the adjusting head (14) is larger than the diameter of the side near the bottom.

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