High efficiency screening machine
By using a slow-flow screening mechanism and a cleaning device, the problem of short screening time in shot sieve machines has been solved, thereby improving equipment space efficiency and screening effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNMING PHARMA GRP JINTAIDE PHARMA
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-03
Smart Images
Figure CN224443687U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of shot sieving equipment, and in particular to a high-efficiency shot sieving machine. Background Technology
[0002] As is well known, Chinese medicine pills are a form of traditional Chinese medicine preparation, which are made by mixing medicinal powder with binder and then shaping them. In order to ensure the uniformity of the pill diameter, the formed Chinese medicine pills need to be screened by a pill screening machine after preparation.
[0003] For example, Chinese utility model patent CN216368905U discloses a vibrating pellet screen for screening pills. It includes a base, an elastic support mechanism, a vibrating box, a vibrating motor, and a screen body. The elastic support mechanism is mounted on the base, the vibrating box is mounted on and supported by the elastic support mechanism, the vibrating motor is mounted on the vibrating box to drive it to vibrate, and the screen body is mounted on the vibrating box and vibrates in sync with it. This effectively prevents dust from flying during the vibrating screening process.
[0004] However, the above-mentioned device still has the following drawbacks: In order to ensure that the pills fall smoothly on their own, the screen body needs to be set with a certain degree of inclination so that the pills roll down automatically under the action of gravity and vibration. This results in a short residence time of the pills in the screen body. In order to improve the screening effect, the length of the screen body needs to be extended, which increases the space occupied by the equipment and has certain limitations in use. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a high-efficiency pill screening machine that extends the pill screening time without increasing the equipment volume, thereby further improving the pill screening effect.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency shot sieving machine, comprising a frame, an open screening box, multiple elastic connectors, and a slow-flow screening mechanism. The open screening box is elastically connected to the frame via the elastic connectors. A vibrating motor is fixedly installed on the open screening box. A material collection chamber is provided inside the open screening box. The open screening box has a first discharge channel and a second discharge channel communicating with the material collection chamber. The slow-flow screening mechanism includes a first rotating roller rotatably installed inside the open screening box, a second rotating roller rotatably installed outside the open screening box, and multiple screening belts. One end of the multiple screening belts is sleeved on the first rotating roller, and the other end of the multiple screening belts is sleeved on the second rotating roller. Screening slots are formed between two adjacent screening belts. The installation height of the first rotating roller is lower than the installation height of the second rotating roller. A first drive motor that provides power for the rotation of the second rotating roller is installed on the open screening box. Furthermore, the end of the screening belt near the first discharge channel is lower than the end of the screening belt away from the first discharge channel, so that the pills tend to roll towards the first discharge channel under the action of gravity; the first drive motor is preferably a variable frequency speed control motor, and the first roller is located above the first discharge channel; the elastic connector is preferably a spring, but other elastic components such as elastic plates can also be used.
[0007] Preferably, a brush roller is rotatably installed inside the open screening box, which contacts the bottom of the lower strip on the screening belt. A second drive motor is installed on the open screening box, which provides power for the rotation of the brush roller.
[0008] Preferably, the open screening box is equipped with a plurality of scraper components located within the screening belt. The scraper components include a scraper that contacts the bottom of the upper strip on the screening belt and a brush belt that contacts the upper part of the lower strip on the screening belt; further, the plurality of scraper components are evenly distributed at equal intervals.
[0009] Preferably, multiple idler roller groups are rotatably installed inside the open screening box. Each idler roller group includes two vertically arranged support shafts, which are used to support the bottom of the upper and lower strips on the screening belt, respectively. Furthermore, the multiple idler roller groups are spaced apart from the scraper.
[0010] Preferably, it also includes a cover plate, which is detachably installed on the open screening box, and a feeding hopper is provided on the cover plate away from the first discharge channel; further, the cover plate is detachably connected to the open screening box by quick clamps or bolts.
[0011] Preferably, the material collection chamber is provided with a guide plate that is inclined toward the second discharge channel.
[0012] Preferably, the outer wall of the screening belt is covered with a plastic aluminum foil layer to reduce the adhesion of powder to the screening belt.
[0013] Compared with the prior art, this utility model provides a high-efficiency shot sieving machine with the following beneficial effects: This high-efficiency shot sieving machine places the pills to be sieving onto multiple screening belts away from the first discharge channel. A vibrating motor drives the open screening box to vibrate, and the pills roll along the screening belts towards the first discharge channel under the action of gravity and vibration. Meanwhile, the first drive motor drives the second rotating roller to rotate, thereby causing the screening belt to move to the side opposite to the direction of pill rolling. The resistance of the screening belt to the pills can overcome part of the downward rolling force of the pills, thereby controlling the rolling speed of the pills and controlling the screening time of the pills according to the requirements. Small-diameter pills or powders fall into the collection chamber through the screening slots and are discharged through the second discharge channel, extending the screening time of the pills without increasing the size of the equipment, and further improving the screening effect of the pills. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;
[0015] Figure 2 This is a top view schematic diagram of the structure of this utility model;
[0016] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;
[0017] Figure 4 This is a three-dimensional structural diagram of the present invention in its uncovered state;
[0018] Figure 5 This is the utility model Figure 3 A magnified schematic diagram of the structure at point B in the middle;
[0019] The following components are labeled in the attached diagram: 1. Frame; 2. Open screening box; 3. Elastic connector; 4. Vibrating motor; 5. Collection chamber; 6. First discharge channel; 7. Second discharge channel; 8. First rotating roller; 9. Second rotating roller; 10. Screening belt; 11. Screening slot; 12. First drive motor; 13. Brush roller; 14. Second drive motor; 15. Scraper; 16. Brush belt; 17. Support shaft; 18. Cover plate; 19. Feed hopper; 20. Guide plate. Detailed Implementation
[0020] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0021] As described in the background art, a vibrating pellet screen is used for screening pills. In order to ensure that the pills fall smoothly on their own, the screen body needs to be set with a certain inclination so that the pills roll down automatically under the action of gravity and vibration. This results in a short residence time of the pills in the screen body. In order to improve the screening effect, the length of the screen body needs to be extended, thereby increasing the space occupied by the equipment and having certain limitations in use.
[0022] To solve this technical problem, this utility model provides a high-efficiency pellet screening machine, which is applied to the screening of granular materials such as pills.
[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Example 1
[0025] Please refer to Figure 1-4 A high-efficiency shot sieving machine includes: a frame 1, an open screening box 2, multiple elastic connectors 3, and a slow-flow screening mechanism. The open screening box 2 is elastically connected to the frame 1 through the elastic connectors 3. A vibrating motor 4 is fixedly installed on the open screening box 2. The open screening box 2 has a material collection chamber 5, a first discharge channel 6, and a second discharge channel 7 communicating with the material collection chamber 5. The slow-flow screening mechanism includes a first rotating roller 8 rotatably installed inside the open screening box 2, a second rotating roller 9 rotatably installed outside the open screening box 2, and multiple screening belts 10. One end of the multiple screening belts 10 is sleeved on the first rotating roller 8, and the other end of the multiple screening belts 10 is sleeved on the second rotating roller 9. Screening slots 11 are formed between two adjacent screening belts 10. The installation height of the first rotating roller 8 is lower than the installation height of the second rotating roller 9. A first drive motor 12 is installed on the open screening box 2 to provide power for the rotation of the second rotating roller 9. Furthermore, the end of the screening belt 10 near the first discharge channel 6 is lower than the end of the screening belt 10 away from the first discharge channel 6, so that the pills tend to roll towards the first discharge channel 6 under the action of gravity; the first drive motor 12 is preferably a variable frequency speed control motor, and the first roller 8 is located above the first discharge channel 6; the elastic connector 3 is preferably a spring, but the elastic connector 3 can also be other elastic components such as an elastic plate.
[0026] For details, please refer to Figure 1 It also includes a cover plate 18, which is detachably installed on the open screening box 2. A feeding hopper 19 is provided on the cover plate 18 at a distance away from the first discharge channel 6. Furthermore, the cover plate 18 is detachably connected to the open screening box 2 by quick clamps or bolts.
[0027] For details, please refer to Figure 3 The material collection chamber 5 is equipped with a guide plate 20 that is inclined toward the second discharge channel 7.
[0028] Specifically, the outer wall of the screening belt 10 is covered with a plastic aluminum foil layer to reduce the adhesion of powder on the screening belt 10.
[0029] The high-efficiency pellet screening machine provided in this embodiment can reduce the outward diffusion of dust generated during pellet screening through the cover plate 18, and the feeding hopper 19 can facilitate the feeding of pellets into the open screening box 2; under the action of the guide plate 20, small-diameter pellets or powders falling into the collection chamber 5 can slide to the second discharge channel 7 to reduce the accumulation of materials in the collection chamber 5; under the action of the plastic aluminum foil layer, the adhesion of powders to the screening belt 10 can be reduced, and the excessive adhesion of powders can prevent mold growth on the screening belt 10. Example 2
[0030] The high-efficiency shot sieving machine provided in Example 1 has been further optimized. For details, please refer to [link / reference needed]. Figure 3 A brush roller 13 is rotatably installed inside the open screening box 2, which contacts the bottom of the lower strip on the screening belt 10. A second drive motor 14 is installed on the open screening box 2, which provides power for the rotation of the brush roller 13.
[0031] For details, please refer to Figure 3 and Figure 5 The open screening box 2 is equipped with a plurality of scraper components located within the screening belt 10. The scraper components include a scraper 15 that contacts the bottom of the upper strip on the screening belt 10 and a brush belt 16 that contacts the upper part of the lower strip on the screening belt 10. Furthermore, the plurality of scraper components are evenly distributed at equal intervals.
[0032] For details, please refer to Figure 3 and Figure 5 Multiple idler roller groups are rotatably installed inside the open screening box 2. Each idler roller group includes two vertically arranged support shafts 17, which are used to support the bottom of the upper and lower strips on the screening belt 10, respectively. Furthermore, the multiple idler roller groups are spaced apart from the scraper.
[0033] The high-efficiency shot sieving machine provided in this embodiment uses a second drive motor 14 to drive a brush roller 13 to rotate. The brush roller 13 brushes away the powder adhering to the screening belt 10 to ensure the cleanliness of the screening belt 10, achieving automatic cleaning of the screening belt 10 without much manual intervention. The scraper 15 and the brush belt 16 can further process the powder and other materials on the inner wall of the screening belt 10, further reducing the residue of powder and other materials on the screening belt 10. Under the action of the support shaft 17, the screening belt 10 can be supported to prevent the middle of the screening belt 10 from sinking, ensuring that the screening belt 10 is always in a relaxed state, so that the upper part of the screening belt 10 is flat.
[0034] The high-efficiency pellet screening machine provided by this utility model is used as follows: The medicine to be screened is put into the open screening box 2 through the feeding hopper 19. The pellets to be screened fall onto multiple screening belts 10 away from the first discharge channel 6. The vibrating motor 4 drives the open screening box 2 to vibrate. Under the action of gravity and vibration, the pellets roll along the screening belt 10 towards the first discharge channel 6. The first drive motor 12 drives the second rotating roller 9 to rotate, so that the screening belt 10 moves to the side opposite to the rolling direction of the pellets. The resistance of the screening belt 10 to the pellets can overcome part of the downward rolling force of the pellets, thereby controlling the rolling speed of the pellets. Small-diameter pellets or powders fall into the collection chamber 5 through the screening slots 11 and are discharged out through the second discharge channel 7. Qualified pellets are discharged out through the first discharge channel 6, completing the screening process of the pellets.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," 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, an electrical connection, or a connection that allows communication between them; 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.
Claims
1. A high efficiency pill screening machine characterized by, The system includes a frame (1), an open screening box (2), multiple elastic connectors (3), and a slow-flow screening mechanism. The open screening box (2) is elastically connected to the frame (1) via the elastic connectors (3). A vibration motor (4) is fixedly installed on the open screening box (2). A collection chamber (5) is provided inside the open screening box (2). The open screening box (2) is provided with a first discharge channel (6) and a second discharge channel (7) communicating with the collection chamber (5). The slow-flow screening mechanism includes components rotatably installed inside the open screening box (2). A first rotating roller (8), a second rotating roller (9) rotatably mounted outside the open screening box (2), and multiple screening belts (10). One end of the multiple screening belts (10) is fitted onto the first rotating roller (8), and the other end of the multiple screening belts (10) is fitted onto the second rotating roller (9). Screening slots (11) are formed between two adjacent screening belts (10). The installation height of the first rotating roller (8) is lower than the installation height of the second rotating roller (9). The open screening box (2) is equipped with a first drive motor (12) that provides power for the rotation of the second rotating roller (9).
2. The high efficiency pill screener of claim 1, wherein, The open screening box (2) is rotatably installed with a brush roller (13) that contacts the bottom of the lower strip on the screening belt (10). The open screening box (2) is equipped with a second drive motor (14), which provides power for the rotation of the brush roller (13).
3. The high efficiency pill screener of claim 2, wherein, The open screening box (2) is equipped with a plurality of scraper components located in the screening belt (10). The scraper components include a scraper (15) that contacts the bottom of the upper strip on the screening belt (10) and a brush belt (16) that contacts the upper part of the lower strip on the screening belt (10).
4. The high efficiency pill screener of claim 1, wherein, Multiple idler roller groups are rotatably installed inside the open screening box (2). Each idler roller group includes two vertically arranged support shafts (17), which are used to support the bottom of the upper and lower strips on the screening belt (10), respectively.
5. The high efficiency pill screener of claim 1, wherein, It also includes a cover plate (18), which is detachably installed on the open screening box (2), and a feeding hopper (19) is provided on the cover plate (18) away from the first discharge channel (6).
6. The high efficiency pill screener of claim 1, wherein, The material collection chamber (5) is provided with a guide plate (20) that is inclined toward the second discharge channel (7).
7. The high efficiency pill screener of claim 1 or 3, wherein, The outer wall of the screening belt (10) is covered with a plastic aluminum foil layer.