A multi-stage tea impurity removing device

Abstract

The utility model relates to a technical field of impurity removing equipment, especially a multistage tea leaf impurity removing equipment, which mainly aims at the problems of the existing traditional manual screening and single mechanical impurity removing mode, such as time and labor consuming, low efficiency, incomplete impurity removing and unstable effect, and provides the following technical scheme: a rack, an obliquely arranged first conveying belt installed on the rack, a light removing assembly arranged at the discharge end of the first conveying belt, the light removing assembly being used for removing the hair contained in the tea leaves, a vibration separation mechanism located below the light removing assembly, the vibration separation mechanism being used for removing the broken slag in the tea leaves, and a heavy object separation assembly installed in the vibration separation mechanism. The utility model can effectively improve the tea leaf impurity removing efficiency and completeness, reduce the labor cost, and guarantee the tea quality, taste and safety performance.

Description

Technical Field

[0001] This utility model relates to the field of impurity removal equipment technology, and in particular to a multi-stage tea impurity removal device. Background Technology

[0002] As a traditional Chinese beverage, tea's production and processing have strict quality requirements, and the presence of impurities directly affects its quality, taste, and safety. Throughout the entire tea-making process, from harvesting to production, various types of impurities can easily be introduced. These impurities come from a wide range of sources and have complex compositions. For example, during the tea-picking stage, because the picking environment is mostly outdoor tea gardens, small stones, soil particles, and other foreign objects may be picked along with the tea leaves. During transportation and initial drying, airborne hairs and fibers, as well as biological impurities such as insect eggs and carcasses from the tea garden environment, can easily adhere to the surface of the tea leaves. Furthermore, during processing steps such as fixing and rolling, mechanical friction may produce broken leaves, and occasionally, hard impurities such as small glass fragments may be introduced due to equipment wear or improper operation.

[0003] Currently, the methods used for impurity removal in tea production are relatively traditional, mainly relying on manual screening and single-stage mechanical removal. Manual screening depends on operators visually identifying and picking out impurities. This method is not only labor-intensive and time-consuming, but also inefficient. It is difficult to completely remove impurities that are small in size and similar in color to tea leaves (such as tiny insect eggs and broken leaves), resulting in inconsistent impurity removal effects. Therefore, this invention proposes a multi-stage tea impurity removal device. Utility Model Content

[0004] The purpose of this invention is to address the problems in the background technology that tea production is prone to the mixing of various complex impurities, and that existing traditional manual screening and single mechanical impurity removal methods are labor-intensive, time-consuming, inefficient, incomplete in removal, and have unstable results. This invention proposes a multi-stage tea impurity removal device.

[0005] The technical solution of this utility model is as follows: A multi-stage tea impurity removal device, including a frame, and a first conveyor belt inclinedly mounted on the frame; a lightweight removal component disposed at the discharge end of the first conveyor belt, the lightweight removal component being used to remove lightweight impurities such as hair contained in the tea; a vibration separation mechanism located below the lightweight removal component, the vibration separation mechanism being used to remove debris from the tea; a heavy object separation component installed in the vibration separation mechanism, the heavy object separation component being used to remove heavy object impurities contained in the tea; a second conveyor belt inclinedly disposed on one side of the heavy object separation component, a third conveyor belt disposed at the discharge end of the second conveyor belt, the second conveyor belt being used to transfer tea, the third conveyor belt being used to evenly distribute tea while conveying tea; a high-speed conveyor belt located at the discharge end of the third conveyor belt, the high-speed conveyor belt being used to drive the tea to move at high speed; a color sorter disposed at the discharge end of the high-speed conveyor belt, the color sorter being used to further remove impurities such as insect eggs or mosquito corpses from the tea; and a dust removal mechanism, the dust removal mechanism being used to remove dust generated at the position where the tea is moved and at the drop position during the transmission process.

[0006] Optionally, the surface of the first conveyor belt is provided with a first anti-slip strip in an equidistant array, and a first mounting box is provided on the outer side of the first conveyor belt.

[0007] Optionally, the first conveyor belt drive shaft is connected to a first rotating column via belt drive. The first rotating column is rotatably connected to a first mounting box, and multiple sets of sweeping plates are provided on the outer ring of the first rotating column.

[0008] Optionally, the lightweight removal component includes a first air-blowing box arranged at an angle, and a first connecting pipe is provided on one side of the first air-blowing box, the first connecting pipe being connected to an air source.

[0009] Optionally, the vibration separation mechanism includes four sets of vibration motors mounted on the frame. A waste hopper is fixedly connected to all four sets of vibration motors. Two sets of side plates are fixedly connected to the top of the waste hopper. A vibration plate is fixedly connected between the two sets of side plates. The vibration plate is located below the discharge end of the first conveyor belt. Multiple sets of inclined holes are provided on the vibration plate, and the multiple sets of inclined holes are distributed in an equidistant array.

[0010] Optionally, the heavy object separation component includes a fixed plate fixedly connected between two sets of vibrating motors. The fixed plate is located on the side of the vibrating plate away from the first conveyor belt. An inclined downward discharge plate is fixedly connected to one end of the fixed plate near the vibrating plate. Multiple sets of second air blowing boxes are fixedly connected to the bottom of the vibrating plate. The openings of the second air blowing boxes face the discharge plate. A second connecting pipe is installed on the side of the second air blowing box and is connected to an air source.

[0011] Optionally, the surface of the second conveyor belt is provided with a second anti-slip strip in an equidistant array, and a concentrated bucket is fixedly connected to the second conveyor belt, the concentrated bucket being located on the side of the fixed plate away from the vibrating plate.

[0012] Optionally, the surface of the third conveyor belt is provided with multiple sets of anti-slip protrusions, the multiple sets of anti-slip protrusions are distributed in an equidistant array, and a second mounting box is provided on the outer side of the third conveyor belt.

[0013] Optionally, the third conveyor belt drive shaft is connected to a second rotating column via belt drive. The second rotating column is rotatably connected to the second mounting box, and the outer ring of the second rotating column is provided with multiple sets of actuating levers.

[0014] Optionally, the multiple sets of sealing plates are provided above the first conveyor belt, the vibration separation mechanism, the third conveyor belt, and the high-speed conveyor belt. Guide boxes are provided above the discharge end of the second conveyor belt and the collection hopper. Dust collection hoppers are distributed and installed on the sealing plates and guide boxes. The positions of the dust collection hoppers correspond to the positions where the tea leaves are moved and the drop positions during the transmission process. The dust removal mechanism also includes a vacuum fan, which is connected to the multiple sets of dust collection hoppers through air pipes.

[0015] In summary, this application includes at least one of the following beneficial technical effects: This invention utilizes a lightweight removal component to separate lightweight hairs based on airflow differences, a vibration separation mechanism to screen out debris through oblique holes and vibration, a heavy object separation component to remove heavy objects such as small stones and glass shards by means of airflow lifting and gravity, and a color sorter to remove discolored impurities such as insect eggs and mosquito corpses through color recognition. Multiple components work together to cover various types of impurities such as broken leaves, hair, insect eggs, and heavy objects, solving the problem that traditional single impurity removal methods are difficult to completely remove impurities. The sweeping plate of the first conveyor belt and the actuating rod of the third conveyor belt ensure even distribution of tea during the tea conveying process, preventing impurities from being wrapped in tea leaves and unable to be separated, further improving the efficiency and thoroughness of impurity removal, and ultimately ensuring the purity and quality of the tea produced. Furthermore, through the cooperation of the sealing plate, guide box and dust collection hopper in the dust removal mechanism, the dust generated during the tea conveying and stirring process is removed in real time under the action of the vacuum fan. This not only avoids dust contamination of tea and affects its quality, but also prevents dust from drifting into the workshop and harming the health of operators, thus achieving environmentally friendly production. In summary, this invention can effectively improve the efficiency and thoroughness of tea impurity removal, reduce labor costs, and ensure the quality, taste, and safety of tea. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a multi-stage tea impurity removal device; Figure 2 This is a structural diagram of the first anti-slip strip; Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the dust removal mechanism after installation.

[0017] Figure label: 1. First conveyor belt; 11. First anti-slip strip; 12. First mounting box; 13. First rotating column; 14. Sweeping plate; 2. Lightweight removal component; 21. First blower box; 22. First connecting pipe; 3. Vibration separation mechanism; 31. Vibration motor; 32. Waste hopper; 33. Side plate; 34. Vibrating plate; 35. Inclined hole; 4. Heavy object separation assembly; 41. Fixing plate; 42. Discharge plate; 43. Second air blowing box; 44. Second connecting pipe; 5. Second conveyor belt; 51. Second anti-slip strip; 52. Concentrated bucket; 6. Third conveyor belt; 61. Anti-slip protrusions; 62. Second mounting box; 63. Second rotating column; 64. Actuating lever; 7. High-speed conveyor belt; 8. Color sorter; 9. Dust removal mechanism; 91. Sealing plate; 92. Guide box; 93. Dust collection hopper; 94. Vacuum fan. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0020] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example: Figure 1 and Figure 2 As shown, this utility model proposes a multi-stage tea impurity removal device, including a frame and an inclined first conveyor belt 1 mounted on the frame. The surface of the first conveyor belt 1 is provided with equidistant arrays of first anti-slip strips 11. After starting, the first conveyor belt 1 conveys tea upwards, and the first anti-slip strips 11 prevent the tea from sliding downwards on the surface of the first conveyor belt 1. A first mounting box 12 is provided on the outer side of the first conveyor belt 1 to prevent tea from leaking outside the first conveyor belt 1. The drive shaft of the first conveyor belt 1 is connected to a first rotating column 13 via belt drive. After starting, the first conveyor belt 1 drives the first rotating column 13 to rotate synchronously. The first rotating column 13 is rotatably connected to the first mounting box 12. Multiple sets of sweeping plates 14 are provided on the outer ring of the first rotating column 13. When the first rotating column 13 rotates, it drives the sweeping plates 14 to rotate synchronously. There is a gap between the sweeping plates 14 and the first conveyor belt 1, facilitating the passage of tea while preventing tea accumulation.

[0024] For further details, please refer to Figure 3 The aforementioned impurity removal equipment includes a lightweight removal component 2 disposed at the discharge end of the first conveyor belt 1. The lightweight removal component 2 is used to remove hair contained in the tea leaves. The lightweight removal component 2 includes an inclined first air-blowing box 21, and a first connecting pipe 22 is disposed on one side of the first air-blowing box 21. The first connecting pipe 22 is connected to an air source. By blowing air obliquely downwards, impurities such as hair, which are lighter than tea leaves, are removed from the tea leaves. At the same time, waste materials disposed at a relative position on the first air-blowing box 21 are used to collect hair and other impurities.

[0025] Furthermore, the aforementioned impurity removal equipment includes a vibration separation mechanism 3 located below the lightweight removal component 2. The vibration separation mechanism 3 is used to remove debris from the tea leaves. The vibration separation mechanism 3 includes four sets of vibration motors 31 mounted on a frame. A waste hopper 32 is fixedly connected to all four sets of vibration motors 31. Two sets of side plates 33 are fixedly connected to the top of the waste hopper 32, and a vibrating plate 34 is fixedly connected between the two sets of side plates 33. The four sets of vibration motors 31 drive the waste hopper 32 to vibrate, and the side plates 33 drive the vibrating plate 34 to vibrate synchronously. This vibration causes the tea leaves to move on the surface of the vibrating plate 34. Simultaneously, the side plates 33 prevent the tea leaves on the vibrating plate 34 from slipping off from both sides. The vibrating plate 34 is located below the discharge end of the first conveyor belt 1. The tea leaves discharged from the first conveyor belt 1, after being cleaned of hair by the lightweight removal component 2, fall onto the vibrating plate 34. The hair removed by the lightweight removal component 2 is blown out by the vibrating plate 34 near the end of the first conveyor belt 1. Multiple sets of inclined holes 35 are provided on the vibrating plate 34. The multiple sets of inclined holes 35 are distributed in an equidistant array. Through the setting of the inclined holes 35, when the tea leaves pass through the vibrating plate 34, the tea leaves debris enters the waste hopper 32 below through the inclined holes 35. A waste box is set below the waste hopper 32 to collect and process the tea leaves debris.

[0026] Specifically, such as Figure 3 and Figure 4 As shown, the aforementioned impurity removal equipment includes a heavy object separation component 4 installed in the vibration separation mechanism 3. The heavy object separation component 4 is used to remove heavy objects contained in the tea leaves. The heavy object separation component 4 includes a fixing plate 41 fixedly connected between two sets of vibration motors 31. The fixing plate 41 is located on the side of the vibration plate 34 away from the first conveyor belt 1. An inclined downward discharge plate 42 is fixedly connected to one end of the fixing plate 41 near the vibration plate 34. Multiple sets of second air blowing boxes 43 are fixedly connected to the bottom of the vibration plate 34. The openings of the second air blowing boxes 43 face the discharge plate 42. A second connecting pipe 44 is installed on the side of the second air blowing box 43 and is connected to an air source. Air is blown onto the discharge plate 42 through the second air blowing box 43, generating an upward airflow. When the vibration generated by the vibration motor 31 moves the tea leaves from the vibration plate 34 to the fixed plate 41, the airflow prevents the tea leaves from falling. At the same time, heavy objects contained in the tea leaves, such as small stones or glass shards, slide down through the discharge plate 42. The debris enters the waste hopper 32 and is collected in the waste box below the waste hopper 32.

[0027] For further information, please refer to [link / reference]. Figures 1 to 3The aforementioned impurity removal equipment includes a second conveyor belt 5 inclined to one side of the heavy object separation component 4, and a third conveyor belt 6 at the discharge end of the second conveyor belt 5. The second conveyor belt 5 is used to transfer tea leaves, and the third conveyor belt 6 is used to transport tea leaves while evenly distributing them. The surface of the second conveyor belt 5 is provided with equidistant arrays of second anti-slip strips 51. After the second conveyor belt 5 starts, it transports the tea leaves upwards, and the second anti-slip strips 51 prevent the tea leaves from sliding down the surface of the second conveyor belt 5. A concentrator hopper 52 is fixedly connected to the second conveyor belt 5. The concentrator hopper 52 is located on the side of the fixed plate 41 away from the vibrating plate 34. After being concentrated by the concentrator hopper 52, the tea leaves passing through the fixed plate 41 fall above the second conveyor belt 5. The surface of the third conveyor belt 6 is provided with multiple sets of anti-slip protrusions 61, which are equidistantly arrayed. The third conveyor belt 6 transports the tea leaves upwards, and the anti-slip protrusions 61 provide support points for the tea leaves, preventing them from sliding down the surface of the third conveyor belt 6 during upward transport. A second mounting box 62 is provided on the outer side of the third conveyor belt 6 to prevent tea leaves from leaking outside the third conveyor belt 6. The drive shaft of the third conveyor belt 6 is connected to a second rotating column 63 via belt drive. After the third conveyor belt 6 starts, it drives the second rotating column 63 to rotate synchronously. The second rotating column 63 is rotatably connected to the second mounting box 62. Multiple sets of actuating rods 64 are provided on the outer ring of the second rotating column 63. When the second rotating column 63 rotates, it drives the actuating rods 64 to rotate synchronously, thereby agitating the tea leaves and preventing them from piling up, while also ensuring that the tea leaves are evenly distributed.

[0028] Furthermore, the aforementioned impurity removal equipment includes a high-speed conveyor belt 7 located at the discharge end of the third conveyor belt 6, which is used to drive the tea leaves at high speed. A color sorter 8 is installed at the discharge end of the high-speed conveyor belt 7. The color sorter 8 is used to further remove impurities such as insect eggs or mosquito carcasses from the tea leaves. The color sorter 8 is existing technology, which removes impurities from the tea leaves through color sorting.

[0029] Finally, as Figure 1 and Figure 5As shown, the aforementioned dust removal equipment includes a dust removal mechanism 9, which is used to remove dust generated at the point where the tea leaves are moved and at the drop point during the transmission process. Multiple sets of sealing plates 91 are installed above the first conveyor belt 1, the vibration separation mechanism 3, the third conveyor belt 6, and the high-speed conveyor belt 7. These sealing plates 91 prevent dust from spreading into the workshop during tea leaf transport, ensuring cleanliness. Guide boxes 92 are installed above the discharge end of the second conveyor belt 5 and above the collection hopper 52. Dust collection hoppers 93 are distributed and installed on the sealing plates 91 and guide boxes 92, with their positions corresponding to the points where the tea leaves are moved and at the drop point during transmission. The dust removal mechanism 9 also includes a vacuum fan 94, which is connected to the multiple sets of dust collection hoppers 93 via air pipes. When the vacuum fan 94 is started, it generates negative pressure, driving airflow and simultaneously removing dust generated by the tea leaves. This improves the quality of the tea leaves after processing and prevents dust from being inhaled into people or dispersed into the air.

[0030] In this embodiment, the equipment is first started, and the tea leaves to be processed are conveyed onto the inclined first conveyor belt 1. The first anti-slip strip 11 on the surface of the first conveyor belt 1 effectively prevents the tea leaves from sliding down during the upward conveying process, while the first mounting box 12 on the outer side prevents the tea leaves from leaking out of the equipment. At the same time, the drive shaft of the first conveyor belt 1 drives the first rotating column 13 to rotate synchronously through belt drive. The multiple sets of sweeping plates 14 on the outer ring of the first rotating column 13 rotate accordingly. The gap reserved between the sweeping plates 14 and the first conveyor belt 1 facilitates the passage of tea leaves and prevents the tea leaves from accumulating during the conveying process, ensuring that the tea leaves are conveyed forward evenly.

[0031] When the tea leaves are conveyed to the discharge end of the first conveyor belt 1, they enter the working range of the lightweight removal component 2. The first air blowing box 21 of the lightweight removal component 2 is connected to an air source through the first connecting pipe 22 and blows air downwards at an angle. Since lightweight impurities such as hair are less heavy than tea leaves, they will detach from the tea leaves under the action of airflow and are then collected by the waste collection structure set at a relatively position, thus completing the removal of hair impurities from the tea leaves.

[0032] After the hair is removed, the tea leaves fall into the vibration separation mechanism 3 below. The four sets of vibration motors 31 of the vibration separation mechanism 3 start and drive the waste hopper 32 to vibrate. The two sets of side plates 33 at the top of the waste hopper 32 further transmit the vibration to the vibration plate 34, causing the vibration plate 34 to vibrate synchronously. The side plates 33 also serve to prevent leakage, preventing the tea leaves from sliding off the sides of the vibration plate 34. During the vibration and movement of the tea leaves on the surface of the vibration plate 34, the debris falls into the waste hopper 32 below through the multiple sets of equidistant array oblique holes 35 opened on the vibration plate 34. Finally, the debris is collected and processed by the waste box below the waste hopper 32, realizing the separation of the debris from the tea leaves.

[0033] After the tea leaves have had their debris removed, they continue to move under vibration to the side of the vibrating plate 34 away from the first conveyor belt 1, entering the working area of ​​the heavy object separation component 4. The fixed plate 41 of the heavy object separation component 4 is fixedly connected between two sets of vibrating motors 31. Multiple sets of second air blowing boxes 43 at the bottom of the vibrating plate 34 are connected to an air source through second connecting pipes 44, blowing air towards the downward-sloping discharge plate 42 to generate an upward airflow. When the tea leaves move from the vibrating plate 34 to the fixed plate 41, the upward airflow lifts the tea leaves to prevent them from falling, while larger heavy objects such as small stones and glass shards contained in the tea leaves slide down the discharge plate 42 into the waste hopper 32 due to gravity, where they are collected and the heavy impurities are separated.

[0034] After the weight is removed, the tea leaves are collected in the hopper 52 on the side of the fixed plate 41 away from the vibrating plate 34, and then fall onto the inclined second conveyor belt 5. The second anti-slip strips 51 on the surface of the second conveyor belt 5 prevent the tea leaves from sliding down, and transfer the tea leaves upward to the discharge end, and then to the third conveyor belt 6. While the third conveyor belt 6 is conveying the tea leaves, its drive shaft drives the second rotating column 63 to rotate synchronously via belt drive. The multiple sets of actuating rods 64 on the outer ring of the second rotating column 63 rotate accordingly, agitating the tea leaves to prevent them from piling up and to ensure even distribution. The anti-slip protrusions 61 on the surface of the third conveyor belt 6 provide support for the tea leaves to prevent them from slipping during conveying, while the second mounting box 62 on the outer side prevents the tea leaves from leaking out.

[0035] After being evenly distributed by the third conveyor belt 6, the tea leaves are transported to the high-speed conveyor belt 7, which drives the tea leaves at high speed to the color sorter 8 at the discharge end. The color sorter 8 uses existing technology to separate and remove discolored impurities such as insect eggs and mosquito corpses from the tea leaves through color recognition, further improving the purity of the tea leaves.

[0036] Throughout the entire tea cleaning and conveying process, the dust removal mechanism 9 operates synchronously. Sealing plates 91 above the first conveyor belt 1, the vibrating separation mechanism 3, the third conveyor belt 6, and the high-speed conveyor belt 7 prevent dust from spreading into the workshop. Guide boxes 92 above the discharge end of the second conveyor belt 5 and the collection hopper 52, in conjunction with the sealing plates 91, are equipped with dust collection hoppers 93 at the points where the tea is moved and at the points of drop during transport. A vacuum fan 94 is connected to multiple sets of dust collection hoppers 93 via air pipes. Upon startup, it generates negative pressure to remove dust generated by the tea, thus improving tea quality and ensuring a clean workshop environment.

[0037] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A multi-stage tea impurity removal device, comprising a frame, characterized in that, Also includes rack-mounted: The first conveyor belt (1) is set at an inclination. The lightweight removal component (2) is installed at the discharge end of the first conveyor belt (1) and is used to remove impurities in the tea leaves that are lighter than the weight of the tea leaves. The vibration separation mechanism (3) located below the lightweight removal component (2) is used to remove tea leaves; The weight separation component (4) installed in the vibration separation mechanism (3) is used to remove impurities in the tea leaves that are larger than the weight of the tea leaves. A second conveyor belt (5) is inclinedly arranged on one side of the heavy object separation component (4). A third conveyor belt (6) is provided at the discharge end of the second conveyor belt (5). The second conveyor belt (5) is used to transfer tea leaves, and the third conveyor belt (6) is used to transport tea leaves while evenly distributing them. A high-speed conveyor belt (7) located at the discharge end of the third conveyor belt (6) is used to drive the tea leaves to move at high speed. A color sorter (8) is installed at the discharge end of the high-speed conveyor belt (7) to further remove impurities from the tea leaves.

2. The multi-stage tea impurity removal device according to claim 1, characterized in that, The first conveyor belt (1) is provided with an equidistant array of first anti-slip strips (11), and the first conveyor belt (1) is provided with a first mounting box (12) on the outside. The first conveyor belt (1) has a drive shaft connected to a first rotating column (13) via belt drive. The first rotating column (13) is rotatably connected to the first mounting box (12). The outer ring of the first rotating column (13) is provided with multiple sets of sweeping plates (14).

3. The multi-stage tea impurity removal device according to claim 2, characterized in that, It also includes a dust removal mechanism (9), which is used to remove dust generated at the position where the tea leaves are moved and at the drop position during the transmission process.

4. The multi-stage tea impurity removal device according to claim 3, characterized in that, The lightweight removal component (2) includes a first air box (21) arranged at an angle, and a first connecting pipe (22) is provided on one side of the first air box (21), and the first connecting pipe (22) is connected to an air source.

5. The multi-stage tea impurity removal device according to claim 4, characterized in that, The vibration separation mechanism (3) includes four sets of vibration motors (31) mounted on the frame. A waste hopper (32) is fixedly connected to the four sets of vibration motors (31). Two sets of side plates (33) are fixedly connected to the top of the waste hopper (32). A vibration plate (34) is fixedly connected between the two sets of side plates (33). The vibration plate (34) is located below the discharge end of the first conveyor belt (1). Multiple sets of inclined holes (35) are opened on the vibration plate (34). The multiple sets of inclined holes (35) are distributed in an equidistant array.

6. The multi-stage tea impurity removal device according to claim 5, characterized in that, The heavy object separation component (4) includes a fixed plate (41) fixedly connected between two sets of vibrating motors (31). The fixed plate (41) is located on the side of the vibrating plate (34) away from the first conveyor belt (1). An inclined downward discharge plate (42) is fixedly connected to one end of the fixed plate (41) near the vibrating plate (34). Multiple sets of second air boxes (43) are fixedly connected to the bottom of the vibrating plate (34). The opening of the second air box (43) faces the discharge plate (42). A second connecting pipe (44) is installed on the side of the second air box (43). The second connecting pipe (44) is connected to an air source.

7. The multi-stage tea impurity removal device according to claim 6, characterized in that, The second conveyor belt (5) is provided with an equidistant array of second anti-slip strips (51), and a concentrated bucket (52) is fixedly connected to the second conveyor belt (5). The concentrated bucket (52) is located on the side of the fixed plate (41) away from the vibrating plate (34).

8. The multi-stage tea impurity removal device according to claim 7, characterized in that, The surface of the third conveyor belt (6) is provided with multiple sets of anti-slip protrusions (61), and the multiple sets of anti-slip protrusions (61) are distributed in an equidistant array. A second mounting box (62) is provided on the outside of the third conveyor belt (6).

9. A multi-stage tea impurity removal device according to claim 8, characterized in that, The third conveyor belt (6) has a drive shaft connected to a second rotating column (63) via belt drive. The second rotating column (63) is rotatably connected to the second mounting box (62). The outer ring of the second rotating column (63) is provided with multiple sets of actuating rods (64).

10. A multi-stage tea impurity removal device according to claim 9, characterized in that, Sealing plates (91) are provided above the first conveyor belt (1), the vibration separation mechanism (3), the third conveyor belt (6) and the high-speed conveyor belt (7). Guide boxes (92) are provided above the discharge end of the second conveyor belt (5) and the collection hopper (52). Dust collection hoppers (93) are distributed and installed on the sealing plate (91) and the guide box (92). The position of the dust collection hopper (93) corresponds to the position where the tea leaves are moved and the drop position during the transmission process. The dust removal mechanism (9) also includes a vacuum fan (94). The vacuum fan (94) is connected to multiple sets of dust collection hoppers (93) through an air pipe.

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