A grading device for star anise
By combining a rotating mechanism and airflow agitation with hot air drying, the clogging problem of the octagonal screening device was solved, achieving efficient grading and drying effects and improving screening efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI TIANYU AGRI TECH CO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-21
AI Technical Summary
Existing octagonal screening devices are prone to screen blockage due to the special shape of the octagon and damp impurities, which affects the grading efficiency.
A rotating mechanism drives an elastic strip to move and tap the octagonal pieces on the screen. Combined with the airflow from the vents, this prevents clogging. At the same time, a hot air unit dries the octagonal pieces. A turning unit adjusts the posture and quantity of the octagonal pieces to reduce adhesion.
It effectively avoids screen clogging, improves the screening and grading efficiency of star anise, reduces impact damage to star anise, and improves drying efficiency.
Smart Images

Figure CN224525249U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening and grading equipment technology, and in particular to a grading device for processing star anise. Background Technology
[0002] Star anise is used to treat abdominal pain due to cold hernia, cold pain in the waist and knees, vomiting due to stomach cold, abdominal pain, and cold and damp beriberi. After harvesting, star anise needs to be graded according to the size of the fruit, and different grades of star anise correspond to different selling prices.
[0003] A search revealed that Chinese patent application CN114011718A discloses an octagon cleaning device, which automatically sorts octagons into three grades—large, medium, and small—using a screening drum and a vibrating screen mechanism, thereby reducing labor intensity and improving efficiency.
[0004] Compared with existing technologies in related fields, it can be seen that when screening star anise, the special shape of star anise and the impurities carried by the surface due to moisture can easily clog the screen holes during screening, making it difficult to remove the star anise and affecting the screening and grading efficiency. Utility Model Content
[0005] The purpose of this invention is to provide a grading device for processing star anise in order to solve the above-mentioned problems.
[0006] This utility model achieves the above objectives through the following technical solutions:
[0007] A grading device for processing star anise includes a screening box and a drying box. The lower surface of the screening box is fixedly equipped with elastic support legs and a vibration mechanism. The interior of the screening box is fixedly arranged with screens of different apertures and a material agitation unit. The side of the screening box is fixedly equipped with a grading discharge hopper that connects to the screens. The inlet of the screening box is connected to the outlet of the drying box. The drying box is fixedly equipped with a material turning unit and a hot air unit. The upper surface of the drying box is provided with a feeding port.
[0008] The material handling unit includes a mounting frame and a rotating mechanism. Displacement components are arranged inside the screening box. The mounting frame is fixedly mounted on the displacement components and is located above the screen. An installation cavity is arranged inside the upper part of the mounting frame. An electrically controlled telescopic mechanism is fixedly installed inside the installation cavity. A top plate is fixedly installed on the telescopic end of the electrically controlled telescopic mechanism. Rubber rods are fixedly arranged on the upper surface of the top plate. A first air valve is fixedly installed on the side of the top plate. An air hole communicating with the first air valve is provided inside the rubber rod. The rotating mechanism is arranged rotatably at the lower end of the mounting frame. Elastic strips are fixedly arranged on the output shaft of the rotating mechanism.
[0009] Furthermore, the displacement assembly includes a first motor and a lead screw. The first motor is fixedly arranged on the side of the screening box, and the lead screw is rotatably arranged inside the screening box. The lead screw is fixedly connected to the output shaft of the first motor, and the lead screw is connected to the mounting bracket through a threaded connection.
[0010] Furthermore, the material turning unit includes a second motor and a rotating shaft. The second motor is fixedly installed on the side of the drying chamber, and the rotating shaft is rotatably installed inside the drying chamber. The rotating shaft is fixedly connected to the output shaft of the second motor, and spiral blades are fixedly installed on the part of the rotating shaft located inside the drying chamber.
[0011] Furthermore, the hot air unit includes a second air valve and a guide hole. The second air valve is fixedly installed on the lower surface of the drying chamber, and the guide hole is arranged inside the lower end of the drying chamber. A one-way valve is fixedly installed inside the guide hole, and the air inlet end of the one-way valve is connected to the second air valve.
[0012] Furthermore, a flexible guide pipe is fixedly installed between the discharge port of the drying box and the inlet of the screening box.
[0013] Furthermore, a dust suction pipe is fixedly installed on the upper surface of the drying oven, and the dust suction pipe is connected to the drying oven.
[0014] Furthermore, a temperature sensor is fixedly installed on the inner side of the drying oven.
[0015] The advantages compared to existing technologies are as follows:
[0016] 1. The rotating mechanism drives the elastic strip to move and tap the octagonal pieces on the screen, causing them to disperse and reducing their adhesion and accumulation. It also adjusts the posture of the octagonal pieces, allowing them to pass through the screen holes for better screening and grading. The airflow from the rubber rod and air holes effectively prevents the octagonal pieces and impurities from clogging the screen holes, ensuring efficient screening and grading. At the same time, the airflow from the elastic strip, rubber rod, and air holes effectively reduces the impact damage to the octagonal pieces when moving them.
[0017] 2. Hot air is sprayed through a one-way valve to dry the agitated star anise. Spiral blades agitate the star anise in the drying chamber, increasing the contact area between the hot air and the star anise and improving the drying efficiency. Drying reduces the stickiness of the star anise caused by moisture. At the same time, the spiral blades control the quantity and speed of star anise entering the screening chamber, reducing the accumulation of star anise and allowing it to be better dispersed for screening and grading, thus improving the efficiency of star anise screening and grading. Attached Figure Description
[0018] 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 these drawings without creative effort.
[0019] Figure 1 This is a first isometric structural schematic diagram of a grading device for octagonal processing according to the present invention;
[0020] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the grading equipment for octagon processing described in this utility model;
[0021] Figure 3 This utility model describes a grading device for processing star anise. Figure 2 Enlarged structural diagram at point A in the middle;
[0022] Figure 4 This utility model describes a grading device for processing star anise. Figure 2 Enlarged structural diagram at point B;
[0023] Figure 5 This utility model describes a grading device for processing star anise. Figure 2 Enlarged structural diagram at point C;
[0024] Figure 6 This is a schematic diagram of the overall side view cross-sectional structure of the grading equipment for octagon processing described in this utility model;
[0025] Figure 7 This utility model describes a grading device for processing star anise. Figure 6 Enlarged structural diagram at point D;
[0026] Figure 8 This is a second isometric structural schematic diagram of a grading device for octagonal processing according to the present invention.
[0027] The annotations in the attached figures are explained as follows:
[0028] 1. Screening box; 2. Drying box; 301. First motor; 302. Lead screw; 303. Mounting frame; 304. Rotating mechanism; 305. Elastic strip; 306. Mounting cavity; 307. Electrically controlled telescopic mechanism; 308. Top plate; 309. Rubber rod; 310. First air valve; 311. Air hole; 401. Second motor; 402. Rotating shaft; 403. Spiral blade; 501. Second air valve; 502. Guide hole; 503. One-way valve; 6. Grading hopper; 7. Screen; 8. Vibration mechanism; 9. Flexible guide pipe; 10. Dust suction pipe; 11. Temperature sensor. Detailed Implementation
[0029] like Figures 1-8 As shown, a grading device for processing star anise includes a screening box 1 and a drying box 2. An elastic support leg and a vibration mechanism 8 are fixedly installed on the lower surface of the screening box 1. Screens 7 with different aperture sizes and a material agitator are fixedly arranged inside the screening box 1. A grading discharge hopper 6 connected to the screens 7 is fixedly installed on the side of the screening box 1. The inlet of the screening box 1 connects to the outlet of the drying box 2. A material turning unit and a hot air unit are fixedly installed inside the drying box 2. A feeding port is provided on the upper surface of the drying box 2. The elastic support leg and vibration mechanism 8 operate using existing technology. The grading discharge hopper 6 has a discharge port connected to the screens 7 at different positions. The aperture size of the screens 7 inside the screening box 1 gradually increases from bottom to top. The material to be screened is discharged through the feeding port. Star anise is added to drying chamber 2, and the turning unit turns the star anise to separate any sticky star anise. At the same time, the hot air unit dries the star anise, making it easier to screen and reducing sticking. Simultaneously, the hot air blows out and separates impurities from the star anise. The dried star anise enters screening chamber 1 and falls onto screen 7. The screen 7 in screening chamber 1 is shaken by the cooperation of elastic support legs and vibration mechanism 8. The star anise is screened and graded through screen 7. The separated star anise is discharged and collected through grading hopper 6. When the star anise is screened and graded by screen 7, the stirring unit moves the star anise to prevent it from accumulating and clogging screen 7, ensuring the efficiency of star anise screening and grading.
[0030] like Figure 2 , Figure 3 , Figure 6 , Figure 7As shown, the material handling unit includes a mounting frame 303 and a rotating mechanism 304. Displacement components are arranged inside the screening box 1. The mounting frame 303 is fixedly mounted on the displacement components and is located above the screen 7. An installation cavity 306 is arranged at the upper end of the mounting frame 303. An electrically controlled telescopic mechanism 307 is fixedly installed inside the installation cavity 306. A top plate 308 is fixedly installed on the telescopic end of the electrically controlled telescopic mechanism 307. Rubber rods 309 are fixedly arranged on the upper surface of the top plate 308. A first air valve 310 is fixedly installed on the side of the top plate 308. A [missing information - likely a device or mechanism] is provided inside the rubber rods 309. The air hole 311 of the first air valve 310 is connected. The rotating mechanism 304 is rotatably arranged at the lower end of the mounting bracket 303. Elastic strips 305 are fixedly arranged on the output shaft of the rotating mechanism 304. The rotating mechanism 304 and the electrically controlled telescopic mechanism 307 operate using existing technology. The first air valve 310 is connected to an external air supply device. When the octagons are screened and graded on the screen 7, the rotating mechanism 304 drives the elastic strips 305 to rotate. The elastic strips 305 move and tap the octagons on the screen 7, causing the octagons to disperse, reducing the adhesion and accumulation of the octagons, and adjusting the posture of the octagons. To ensure better screening and grading of star anise, the elastic strip 305 reduces the impact on the star anise, thus minimizing damage. Simultaneously, the electrically controlled telescopic mechanism 307 moves the top plate 308, which in turn moves the rubber rod 309. The rubber rod 309 pushes the screen 7, entering the screen holes to dislodge any star anise clogging them. Simultaneously, an external air supply device supplies air through the first air valve 310 and ejects it through the air hole 311. The airflow ejected through the air hole 311 then... The angular impact cleans the impurities adhering to the screen 7 and pushes out the octagons in the screen holes of the screen 7, reducing the impact damage to the octagons caused by the rubber rod 309. The airflow ejected by the rubber rod 309 and the air hole 311 effectively prevents the octagons and impurities from clogging the screen holes of the screen 7, allowing the octagons to pass through the screen 7 better for screening and grading, ensuring the efficiency of octagon screening and grading. The displacement component drives the mounting frame 303 to move and adjust the position of the mounting frame 303 on the screen 7, making it easier to process the octagons at different positions on the screen 7, ensuring the efficiency of octagon screening and grading.
[0031] like Figure 1 , Figures 6-8As shown, the displacement assembly includes a first motor 301 and a lead screw 302. The first motor 301 is fixedly arranged on the side of the screening box 1, and the lead screw 302 is rotatably arranged inside the screening box 1. The lead screw 302 is fixedly connected to the output shaft of the first motor 301. The lead screw 302 is connected to the mounting frame 303 through a threaded connection. The first motor 301 operates using existing technology. The first motor 301 drives the lead screw 302 to rotate, and the lead screw 302 drives the mounting frame 303 to move, adjusting the position of the mounting frame 303 inside the screening box 1, which facilitates the movement of the octagonal parts at different positions on the screen 7.
[0032] like Figure 2 , Figure 4 , Figure 5 , Figure 8 As shown, the turning unit includes a second motor 401 and a rotating shaft 402. The second motor 401 is fixedly installed on the side of the drying chamber 2, and the rotating shaft 402 is rotatably installed inside the drying chamber 2. The rotating shaft 402 is fixedly connected to the output shaft of the second motor 401. Spiral blades 403 are fixedly installed on the part of the rotating shaft 402 located inside the drying chamber 2. The second motor 401 operates using existing technology. The second motor 401 drives the rotating shaft 402 to rotate, and the rotating shaft 402 drives the spiral blades 403 to rotate. The spiral blades 403 turn over the octagonal pieces inside the drying chamber 2, which facilitates the drying of the octagonal pieces. The turning also reduces the adhesion between the octagonal pieces, allowing them to disperse and facilitating better screening and grading. At the same time, the spiral blades 403 control the number and speed of the octagonal pieces entering the screening box 1, reducing the accumulation of octagonal pieces and facilitating better screening and grading, thereby improving the efficiency of screening and grading.
[0033] like Figure 2 , Figure 5 , Figure 8As shown, the hot air unit includes a second air valve 501 and a guide hole 502. The second air valve 501 is fixedly installed on the lower surface of the drying chamber 2. The guide holes 502 are arranged inside the lower end of the drying chamber 2. A one-way valve 503 is fixedly installed inside the guide hole 502. The air inlet of the one-way valve 503 is connected to the second air valve 501. The second air valve 501 is connected to an external hot air conveying device. During the processing of the octagon, the external hot air conveying device delivers hot air to the guide hole 502 through the second air valve 501, and the hot air is dispersed into the drying chamber 2 through the one-way valve 503 inside the guide hole 502, thereby drying the octagon. Inside box 2, star anise is dried by blowing air, reducing surface moisture and preventing sticking caused by dampness. This facilitates better separation during screening, improving the efficiency of star anise screening and grading. Simultaneously, the blown hot air carries away fine impurities, enhancing the cleanliness of the star anise. A one-way valve 503 prevents impurities from entering the guide holes 502 and causing blockages, maintaining smooth airflow for better drying. The arrangement of the guide holes 502 allows for airflow from different angles, increasing the contact area between the hot air and the star anise, thus improving the drying effect.
[0034] like Figure 1 , Figure 5 , Figure 6 As shown, a flexible guide pipe 9 is fixedly installed between the discharge port of the drying chamber 2 and the inlet of the screening box 1. The dried octagons in the drying chamber 2 enter the screening box 1 through the flexible guide pipe 9 for screening. The flexible guide pipe 9 protects the screening box 1 and the drying chamber 2, preventing the vibration of the screening box 1 from affecting the stability of the drying chamber 2.
[0035] like Figure 1 , Figure 2 , Figure 4 , Figure 6 As shown, a suction pipe 10 is fixedly installed on the upper surface of the drying chamber 2. The suction pipe 10 is connected to the drying chamber 2 and an external suction device. During the screening of star anise, the external suction device extracts the water vapor and impurities separated in the drying chamber 2 through the suction pipe 10, thereby improving the dryness of the drying chamber 2 and the cleanliness of the star anise, thus better drying the star anise.
[0036] like Figure 4 As shown, a temperature sensor 11 is fixedly installed on the inner side of the drying oven 2. The temperature sensor 11 operates using existing technology. The temperature sensor 11 detects the temperature inside the drying oven 2, thereby preventing the temperature inside the drying oven 2 from being too high and affecting the quality of the star anise, and facilitating the control of the hot air temperature, thus effectively drying the star anise.
[0037] Working principle: such as Figure 1 , Figure 2, Figures 4-6 , Figure 8 As shown, the star anise to be screened is added to the drying chamber 2 through the feeding port. The second motor 401 drives the rotating shaft 402 to rotate, which in turn drives the spiral blades 403 to rotate. The spiral blades 403 tumble the star anise in the drying chamber 2. The external hot air delivery device delivers hot air to the guide hole 502 through the second air valve 501, and the one-way valve 503 in the guide hole 502 disperses the hot air into the drying chamber 2, thereby drying the star anise in the drying chamber 2. The temperature sensor 11 detects the temperature in the drying chamber 2 to facilitate the control of the hot air temperature. At the same time, the external dust collection device extracts the water vapor and impurities separated in the drying chamber 2 through the dust collection pipe 10.
[0038] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 8 As shown, the dried star anise is pushed by the spiral blade 403. The dried star anise in the drying box 2 enters the screening box 1 through the flexible guide pipe 9. The star anise is placed on the screen 7. The screen 7 in the screening box 1 shakes through the elastic support legs and the vibration mechanism 8. The star anise is screened and graded through the screen 7. The separated star anise is discharged and collected through the grading hopper 6.
[0039] like Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, when the star anise is screened and graded on the screen 7, the rotating mechanism 304 drives the elastic strip 305 to rotate, and the elastic strip 305 moves and taps the star anise on the screen 7, causing the star anise to disperse. At the same time, the electric control telescopic mechanism 307 drives the top plate 308 to move, and the top plate 308 drives the rubber rod 309 to move, and the rubber rod 309 pushes the screen 7. The rubber rod 309 enters the screen hole of the screen 7, thereby pushing out the star anise that is blocked in the screen hole. At the same time, the external air supply device supplies air through the first air valve 310 and sprays it out through the air hole 311. The airflow sprayed out through the air hole 311 impacts the star anise, completing the cleaning of the impurities adhering to the screen 7 and pushing out the star anise in the screen hole of the screen 7. The airflow sprayed out through the rubber rod 309 and the air hole 311 effectively prevents the star anise from blocking the screen hole of the screen 7, allowing the star anise to pass through the screen hole of the screen 7 better, thus completing the screening and grading of the star anise.
[0040] like Figure 1 , Figures 6-8As shown, the first motor 301 drives the lead screw 302 to rotate, and the lead screw 302 drives the mounting frame 303 to move, adjusting the position of the mounting frame 303 in the screening box 1, so as to facilitate the manipulation of the octagons at different positions on the screen 7, ensuring the efficiency of octagon screening and grading.
[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A grading device for processing star anise, characterized in that, The equipment includes a screening box (1) and a drying box (2). The lower surface of the screening box (1) is equipped with elastic support legs and a vibration mechanism (8). The interior of the screening box (1) is arranged with screens (7) of different apertures and a material stirring unit. The side of the screening box (1) is equipped with a grading discharge hopper (6) that connects to the screens (7). The feed end of the screening box (1) is connected to the discharge end of the drying box (2). The drying box (2) is equipped with a material turning unit and a hot air unit. The upper surface of the drying box (2) is provided with a feeding port. The material handling unit includes a mounting frame (303) and a rotating mechanism (304). Displacement components are arranged inside the screening box (1). The mounting frame (303) is mounted on the displacement components. The mounting frame (303) is located above the screen (7). An installation cavity (306) is arranged at the upper end of the mounting frame (303). An electrically controlled telescopic mechanism (307) is installed inside the installation cavity (306). A top plate (308) is installed on the telescopic end of the electrically controlled telescopic mechanism (307). Rubber rods (309) are arranged on the upper surface of the top plate (308). A first air valve (310) is installed on the side of the top plate (308). An air hole (311) communicating with the first air valve (310) is provided inside the rubber rod (309). The rotating mechanism (304) is rotatably arranged at the lower end of the mounting frame (303). Elastic strips (305) are arranged on the output shaft of the rotating mechanism (304).
2. The grading equipment for processing star anise according to claim 1, characterized in that: The displacement assembly includes a first motor (301) and a lead screw (302). The first motor (301) is arranged on the side of the screening box (1), and the lead screw (302) is rotatably arranged inside the screening box (1). The lead screw (302) is connected to the output shaft of the first motor (301), and the lead screw (302) is connected to the mounting bracket (303) by a threaded connection.
3. The grading equipment for processing star anise according to claim 1, characterized in that: The material turning unit includes a second motor (401) and a rotating shaft (402). The second motor (401) is installed on the side of the drying box (2). The rotating shaft (402) is rotatably installed inside the drying box (2). The rotating shaft (402) is connected to the output shaft of the second motor (401). Spiral blades (403) are installed on the part of the rotating shaft (402) located inside the drying box (2).
4. The grading equipment for processing star anise according to claim 1, characterized in that: The hot air unit includes a second air valve (501) and a guide hole (502). The second air valve (501) is installed on the lower surface of the drying chamber (2). The guide hole (502) is arranged inside the lower end of the drying chamber (2). A one-way valve (503) is installed in the guide hole (502). The air inlet end of the one-way valve (503) is connected to the second air valve (501).
5. A grading device for processing star anise according to claim 1, characterized in that: A flexible guide tube (9) is installed between the outlet of the drying box (2) and the inlet of the screening box (1).
6. A grading device for processing star anise according to claim 1, characterized in that: A suction pipe (10) is installed on the upper surface of the drying chamber (2), and the suction pipe (10) is connected to the drying chamber (2).
7. A grading device for processing star anise according to claim 1, characterized in that: A temperature sensor (11) is installed on the inner side of the drying oven (2).