Agricultural tea lifting type sorting equipment and method

Abstract

The invention provides agricultural tea lifting type sorting equipment which comprises a circular frame, a limiting groove, a screen piece and a jacking mechanism, when the jacking mechanism is matched with the screen piece to shake up and down, a top plate matched with the circular frame and having a lifting function is attached to the top of the circular frame, and the center of the top of the top plate communicates with a feeding hopper; the top plate is used for guiding tea leaves into the screen piece from the feeding hopper for multi-stage sorting, and the top plate is provided with a pair of elastic parts which are located in the limiting groove and used for abutting against the screen piece; through design and cooperation of structures such as a rotating rod, a cam, an upper screen drum, a limiting plate, a lower screen drum, a circular frame and a square abutting rod, tea leaves of different sizes can be automatically and efficiently separated out of the tea leaves entering a screen piece, the grading and sorting effect is achieved, and meanwhile under the combination of the continuous blowing effect of an air guide pipe, the tea leaves are effectively separated out. Fine impurities and foreign matters in the tea leaves can be effectively removed, and the purity and the quality of the tea leaves are improved.

Description

Technical Field

[0001] This invention relates to the field of sorting technology, and in particular to a lifting sorting device and method for tea leaves in agriculture. Background Technology

[0002] Tea, as one of my country's traditional beverages, is cultivated and produced in many provinces, and the quality and taste of tea vary from province to province. However, in the production process, the picked tea leaves need to go through several stages, such as drying and sorting, before they can meet packaging standards. Among these, the sorting stage is a very important step, as it selects tea leaves based on their size, shape, color, and other characteristics, further improving the quality and taste of the tea.

[0003] Currently, tea sorting typically involves piling large quantities of tea leaves on a workbench and having multiple workers visually identify and sort them. However, this manual sorting method has many problems. Because the dried tea leaves vary in size, workers struggle to accurately identify leaves of different sizes, resulting in low sorting accuracy and compromised tea quality. Furthermore, the large volume of tea to be sorted makes manual sorting labor-intensive, and worker fatigue and human error can easily reduce efficiency. Therefore, this invention proposes a lifting-type tea sorting device and method for agricultural applications. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a lifting sorting device and method for tea leaves in agriculture that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: a tea lifting and sorting device in agriculture, including a circular frame with support, a pair of mirror-symmetrical limiting grooves on the surface corresponding to the top opening of the circular frame, a screen component that is engaged with the inside of the circular frame between the two limiting grooves for multi-stage sorting of tea, a lifting mechanism for shaking the tea entering the screen component, when the lifting mechanism shakes the screen component up and down, a matching top plate with lifting function is attached to the top of the circular frame, the top center of the top plate is connected to a feed hopper for the tea to be introduced from the feed hopper into the screen component for multi-stage sorting, and a pair of elastic parts located in the limiting grooves for abutting the screen component on the top plate.

[0006] Preferably, a pair of support plates are fixed on the surface corresponding to the bottom opening of the circular frame, a placement base plate is fixed on the bottom of the support plates, and a circular collection frame corresponding to the bottom of the screen is provided at the top center of the placement base plate.

[0007] Preferably, the screen component includes an upper screen cylinder, on which a limiting plate is fixed and fits against the inner wall of the limiting groove. The inner bottom wall of the upper screen cylinder has screen holes I evenly distributed. The bottom of the upper screen cylinder is detachably connected to a lower screen cylinder. The top of the lower screen cylinder and the upper screen cylinder are both open. The inner bottom wall of the lower screen cylinder has screen holes II evenly distributed. The diameter of the screen holes II is smaller than that of the screen holes I.

[0008] Preferably, the top of the lower screen cylinder is provided with a threaded groove, and the bottom of the upper screen cylinder is fixed with a threaded connecting ring that is threaded along the threaded groove.

[0009] Preferably, the lifting mechanism includes a rotating rod rotatably disposed between the two support plates, a second drive unit connected to one end of the rotating rod is mounted on the surface of the support plate, and a pair of cams that abut against the bottom of the lower screen cylinder are fixed on the surface of the rotating rod.

[0010] Preferably, a pair of mirror-symmetrical extended sides are fixed on the top plate, and a driving part is installed at the bottom of the extended sides. The bottom end of the driving part is fixed with a mounting plate connected to the circular frame.

[0011] Preferably, the diameter of the feed hopper gradually decreases from the top end to the bottom end.

[0012] Preferably, the elastic part includes a positioning block fixed between the top and bottom of the top plate, a compression cavity is provided inside the positioning block, a moving block slides on the inner wall of the compression cavity, a spring is fixed between the top of the moving block and the inner top wall of the compression cavity, a square abutment rod is fixed at the bottom of the moving block, the other end of the square abutment rod extends through to the bottom of the positioning block, and a square groove is provided at the top of the limiting plate to engage with the bottom end of the square abutment rod.

[0013] Preferably, the top of the positioning block is connected to an air guide pipe, and the other end of the air guide pipe extends from the top of the top plate to the corresponding lower part of the bottom of the top plate.

[0014] This invention also provides a method for using a lifting and sorting device for tea leaves in agriculture, comprising the following steps:

[0015] Step S1: Slide the tea leaves along the inner wall of the feed hopper into the screen for multi-stage sorting;

[0016] Step S2: By activating the lifting mechanism, the screen can be made to vibrate up and down in a reciprocating motion under the cooperation of the top plate and the elastic part.

[0017] Step S3: Finally, as the top plate with lifting function moves upward, the screen piece slides upward along the inner wall of the limiting groove to disengage from the circular frame, and the tea leaves that have been sorted in multiple stages are taken out from the screen piece.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0019] 1. The present invention, through the design and coordination of structures such as rotating rod, cam, upper screen cylinder, limiting plate, lower screen cylinder, circular frame and square contact rod, enables tea leaves entering the screen components composed of upper and lower screen cylinders to be sorted in a multi-stage manner by shaking up and down, thereby automatically and efficiently separating tea leaves of different sizes and achieving the effect of grading and sorting.

[0020] 2. The present invention adopts a detachable design between the upper and lower sieve cylinders to facilitate the separate sorting of tea leaves of different sizes that enter the upper and lower sieve cylinders, and to allow the sorted tea leaves to be taken out from the circular frame later.

[0021] 3. The present invention, through the structural design of the top plate, square block, compression chamber, moving block, spring and square abutment rod, serves two purposes. First, it ensures that the screen is stably positioned within the circular frame and reciprocates up and down through the lifting mechanism, improving the screening effect of multi-stage tea sorting. Second, the tea entering the upper screen cylinder, under the repeated up and down shaking and the continuous airflow through the air guide pipe, effectively removes fine impurities and foreign objects from the surface of the tea, further improving the purity and quality of the tea. Attached Figure Description

[0022] Figure 1 This is a cross-sectional structural diagram of a lifting and sorting device for tea leaves in agriculture provided by the present invention;

[0023] Figure 2 This is an exploded structural diagram of a tea lifting and sorting device in agriculture provided by the present invention;

[0024] Figure 3 This invention provides a schematic diagram of a circular frame structure for a lifting and sorting device for tea leaves in agriculture.

[0025] Figure 4 This is a schematic diagram of the connection structure between the limiting plate and the limiting groove of a tea lifting and sorting device in agriculture provided by the present invention;

[0026] Figure 5 This invention provides an exploded structural diagram showing the connection between the upper and lower sieve cylinders of a lifting tea sorting device in agriculture.

[0027] Figure 6 This invention provides a schematic diagram of the top plate structure of a lifting sorting device for tea leaves in agriculture.

[0028] Figure 7 This invention provides a lifting-type tea sorting device for agriculture. Figure 1 A magnified view of the structure at point A in the middle;

[0029] Figure 8 This is a schematic diagram of the overall structure of a tea lifting and sorting device in agriculture provided by the present invention.

[0030] In the diagram: 1. Circular frame; 2. Limiting groove; 3. Screen component; 31. Upper screen cylinder; 32. Limiting plate; 33. Screen hole one; 34. Lower screen cylinder; 35. Screen hole two; 36. Threaded groove; 37. Threaded connecting ring; 4. Lifting mechanism; 41. Rotating rod; 42. Drive unit two; 43. Cam; 5. Top plate; 6. Feed hopper; 7. Elastic part; 71. Positioning block; 72. Compression chamber; 73. Moving block; 74. Spring; 75. Square contact rod; 76. Air guide pipe; 8. Support plate; 9. Placement base plate; 10. Circular collection frame; 11. Extension edge; 12. Drive unit one; 13. Mounting plate; 14. Square groove. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, so that those skilled in the art can implement it based on the description.

[0032] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0033] In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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 invention.

[0034] Reference Figures 1-4 A tea-lifting sorting device for agriculture includes a circular frame 1 with support, a pair of support plates 8 fixed on the surface corresponding to the bottom opening of the circular frame 1, a placement base plate 9 fixed on the bottom of the support plates 8, a pair of mirror-symmetrical limiting grooves 2 on the surface corresponding to the top opening of the circular frame 1, a screen 3 that is snapped into the inside of the circular frame 1 between the two limiting grooves 2 for multi-stage sorting of tea, and a circular collection frame 10 corresponding to the bottom of the screen 3 at the top center of the placement base plate 9.

[0035] The above technical solution, because the screen 3 has multiple holes of different sizes and has an upper and lower layered structure, allows tea leaves to be screened in multiple stages by being introduced into the screen 3, separating tea leaves of different sizes and achieving the effect of grading and sorting. Compared with manually piling a large amount of tea leaves on the workbench and sorting them by visual inspection, the efficiency and accuracy are much higher.

[0036] In one specific embodiment, reference is made to Figures 1-5 A tea-lifting sorting device for agriculture includes a circular frame 1 with support. A pair of support plates 8 are fixed to the surface corresponding to the bottom opening of the circular frame 1. A base plate 9 is fixed to the bottom of the support plates 8. A pair of mirror-symmetrical limiting grooves 2 are provided on the surface corresponding to the top opening of the circular frame 1. A screen component 3 is provided between the two limiting grooves 2 and engaged inside the circular frame 1 for multi-stage sorting of tea. A circular collection frame 10 is provided at the top center of the base plate 9, corresponding to the bottom of the screen component 3. The screen component 3 includes an upper screen cylinder. 31. A limiting plate 32 that fits against the inner wall of the limiting groove 2 is fixed on the upper screen cylinder 31. Screen holes 33 are evenly distributed on the inner bottom wall of the upper screen cylinder 31. A lower screen cylinder 34 is detachably connected to the bottom of the upper screen cylinder 31. The tops of the lower screen cylinder 34 and the upper screen cylinder 31 are both open. Screen holes 35 are evenly distributed on the inner bottom wall of the lower screen cylinder 34. The diameter of the screen holes 35 is smaller than that of the screen holes 33. A threaded groove 36 is opened on the top of the lower screen cylinder 34. A threaded connecting ring 37 that is threaded along the threaded groove 36 is fixed on the bottom of the upper screen cylinder 31.

[0037] In the above technical solution, in order to facilitate the removal of tea leaves of different sizes from the screen 3, the screen 3 adopts an integrated and detachable structure. The upper screen cylinder 31 is connected to the lower screen cylinder 34 by a threaded connecting ring 37 at the bottom and a threaded groove 36 at the top, which facilitates the removal of tea leaves of different sizes from each layer of the screen 3.

[0038] In a preferred embodiment, reference is made to Figures 1-7A tea-lifting sorting device for agriculture includes a circular frame 1 with support. A pair of support plates 8 are fixed to the surface corresponding to the bottom opening of the circular frame 1. A base plate 9 is fixed to the bottom of the support plates 8. A pair of mirror-symmetrical limiting grooves 2 are provided on the surface corresponding to the top opening of the circular frame 1. A screen 3 is provided between the two limiting grooves 2 and engaged inside the circular frame 1 for multi-stage sorting of tea. A circular collection frame 10 is provided at the top center of the base plate 9, corresponding to the bottom of the screen 3. A lifting mechanism 4 is used to shake the tea leaves entering the screen 3 up and down. The lifting mechanism 4 includes a rotating mechanism. Between the two support plates 8, there is a rotating rod 41. The surface of the support plate 8 is equipped with a drive part 42 connected to one end of the rotating rod 41. The surface of the rotating rod 41 is fixed with a pair of cams 43 that abut against the bottom of the lower screen cylinder 34. When the lifting mechanism 4 works with the screen 3 to shake up and down, the top of the circular frame 1 is fitted with a matching top plate 5 that has a lifting function. The top center of the top plate 5 is connected to a feed hopper 6, which is used to guide tea leaves from the feed hopper 6 into the screen 3 for multi-stage sorting. The diameter of the feed hopper 6 gradually decreases from the top end to the bottom end. The top plate 5 is provided with a pair of elastic parts 7 located in the limiting groove 2 and used to abut against the screen 3.

[0039] This technical solution is adopted because if tea leaves that directly enter the screen 3 are naturally subjected to multi-stage sieving, it may affect the thorough separation of tea leaves of different sizes and result in low efficiency. Based on this problem, a lifting mechanism 4 is designed at the bottom of the screen 3. By activating the drive unit 42 of the servo motor in the lifting mechanism 4, the cam 43 on the surface of the rotating rod 41 is driven to repeatedly shake the top of the lower screen cylinder 34 up and down with the cooperation of the top plate 5 and the elastic part 7, so that the tea leaves are more fully separated in the screen 3 and the sieving efficiency is improved.

[0040] In one specific embodiment, reference is made to Figures 1-8A tea-lifting sorting device for agriculture includes a circular frame 1 with supports. A pair of support plates 8 are fixed to the surface corresponding to the bottom opening of the circular frame 1. A base plate 9 is fixed to the bottom of the support plates 8. A pair of mirror-symmetrical limiting grooves 2 are provided on the surface corresponding to the top opening of the circular frame 1. A screen 3 is provided between the two limiting grooves 2 and engaged inside the circular frame 1 for multi-stage sorting of tea. A circular collection frame 10 is provided at the top center of the base plate 9, corresponding to the bottom of the screen 3. A lifting mechanism 4 is used to shake the tea leaves entering the screen 3 up and down. The lifting mechanism 4 includes a rotating rod 41 rotatably disposed between the two support plates 8. A rod 41 is mounted on the surface of the support plates 8. The drive unit 42 is connected to the rotating rod 41 and a pair of cams 43 are fixed on the surface of the rod, which abut against the bottom of the lower screen cylinder 34. When the lifting mechanism 4 shakes up and down with the screen 3, the top of the circular frame 1 is fitted with a matching top plate 5 with lifting function. The top center of the top plate 5 is connected to the feed hopper 6, which is used to guide tea leaves from the feed hopper 6 into the screen 3 for multi-stage sorting. The top diameter of the feed hopper 6 gradually decreases from the bottom diameter. The top plate 5 is provided with a pair of elastic parts 7 located in the limiting groove 2 and used to abut against the screen 3. A pair of mirror-symmetrical extension edges 11 are fixed on the top plate 5. The bottom of the extension edges 11 is installed with a drive unit 12. The bottom end of the drive unit 12 is fixed with a mounting plate 13 connected to the circular frame 1.

[0041] In the above technical solution, since the screen 3 is slidably engaged in the inner wall of the limiting groove 2 by the limiting plate 32, in order to make the screen 3 more stable in the up-and-down shaking with the cooperation of the lifting mechanism 4, and at the same time to facilitate the subsequent multi-level sorting of tea leaves of different sizes in the screen 3, a top plate 5 with lifting function is designed at the top of the circular frame 1. Then, the elastic part 7 on the top plate 5 tightly abuts against the limiting plate 32, so that the screen 3 can be stably shaken up and down in cooperation with the lifting mechanism 4 for sorting. At the same time, when the top plate 5 is driven upward by the drive part 12 of the electric push rod, it helps to slide the screen 3 along the inner wall of the limiting groove 2 and take it out from the circular frame 1, thereby facilitating the removal of tea leaves of different sizes from the multi-level sorting in the screen 3.

[0042] In one specific embodiment, reference is made to Figures 1-8A tea-lifting sorting device for agriculture includes a circular frame 1 with support. A pair of support plates 8 are fixed to the surface corresponding to the bottom opening of the circular frame 1. A base plate 9 is fixed to the bottom of the support plates 8. A pair of mirror-symmetrical limiting grooves 2 are provided on the surface corresponding to the top opening of the circular frame 1. A screen 3 is provided between the two limiting grooves 2 and is engaged with the inside of the circular frame 1 for multi-stage sorting of tea. When the lifting mechanism 4 shakes up and down in conjunction with the screen 3, a matching top plate 5 with lifting function is attached to the top of the circular frame 1. A feed hopper 6 is connected to the center of the top of the top plate 5 for feeding tea from the feed hopper 6. The screen is introduced into the screen 3 for multi-stage sorting. The top plate 5 is provided with a pair of elastic parts 7 located in the limiting groove 2 and used to abut against the screen 3. The elastic part 7 includes a positioning block 71 fixed between the top and bottom of the top plate 5. The positioning block 71 is provided with a compression chamber 72. A moving block 73 slides on the inner wall of the compression chamber 72. A spring 74 is fixed between the top of the moving block 73 and the inner top wall of the compression chamber 72. A square abutting rod 75 is fixed at the bottom of the moving block 73. The other end of the square abutting rod 75 extends through to the bottom of the positioning block 71. The top of the limiting plate 32 is provided with a square groove 14 that engages with the bottom end of the square abutting rod 75.

[0043] In the above technical solution, when the elastic part 7 works with the lifting mechanism 4 to shake the screen 3 up and down, one end of the square contact rod 75 is inserted into the square groove 14, and the other end of the moving block 73 is limited in the compression chamber 72 by the spring 74. In this way, when the lifting mechanism 4 moves the screen 3 up or down repeatedly through the cam 43, the limiting plate 32 in the screen 3 will also repeatedly drive the positioning block 71 connected to the other end of the square contact rod 75 to slide along the inner wall of the compression chamber 72 to squeeze the spring 74, so that the screen 3 can shake up and down during the repeated compression and reset of the spring 74.

[0044] In a preferred embodiment, reference is made to Figures 1-8A tea-lifting sorting device for agriculture includes a circular frame 1 with support. A pair of support plates 8 are fixed to the surface corresponding to the bottom opening of the circular frame 1. A base plate 9 is fixed to the bottom of the support plates 8. A pair of mirror-symmetrical limiting grooves 2 are provided on the surface corresponding to the top opening of the circular frame 1. A screen 3 is provided between the two limiting grooves 2 and engaged inside the circular frame 1 for multi-stage sorting of tea. When the lifting mechanism 4 shakes up and down in conjunction with the screen 3, a matching top plate 5 with lifting function is attached to the top of the circular frame 1. A feed hopper 6 is connected to the center of the top of the top plate 5 for feeding tea from the feed hopper 6 into the screen 3 for multi-stage sorting. A pair of mirror-symmetrical limiting grooves 2 are provided on the surface corresponding to the top opening of the circular frame 1. The limiting groove 2 contains an elastic part 7 for contacting the screen 3. The elastic part 7 includes a positioning block 71 fixed between the top and bottom of the top plate 5. The positioning block 71 has a compression chamber 72. A moving block 73 slides on the inner wall of the compression chamber 72. A spring 74 is fixed between the top of the moving block 73 and the inner top wall of the compression chamber 72. A square abutment rod 75 is fixed at the bottom of the moving block 73. The other end of the square abutment rod 75 extends through to the bottom of the positioning block 71. The top of the limiting plate 32 has a square groove 14 that engages with the bottom end of the square abutment rod 75. The top of the positioning block 71 is connected to an air guide pipe 76. The other end of the air guide pipe 76 extends from the top of the top plate 5 to the corresponding lower part of the bottom of the top plate 5.

[0045] The above technical solution, by connecting an air guide pipe 76 to the top of the positioning block 71, allows the gas squeezed inside the compression chamber 72 to be blown into the upper sieve cylinder 31 through the air guide pipe 76 when the moving block 73 slides along the inner wall of the compression chamber 72. In this way, the tea leaves entering the upper sieve cylinder 31 can be further separated more thoroughly during the repeated up-and-down shaking and blowing process, thereby improving the screening efficiency.

[0046] This invention also provides a method for using a lifting and sorting device for tea leaves in agriculture, comprising the following steps:

[0047] Step S1: Slide the tea leaves along the inner wall of the feed hopper 6 into the screen 3 for multi-stage sorting;

[0048] Step S2: By activating the lifting mechanism 4, the screen 3 is driven to vibrate up and down in a reciprocating manner under the cooperation of the top plate 5 and the elastic part 7.

[0049] Step S3: Finally, as the top plate 5 with lifting function moves upward, the screen 3 slides upward along the inner wall of the limiting groove 2 to disengage from the circular frame 1, and the tea leaves that have been sorted in multiple stages are taken out from the screen 3.

[0050] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of the present invention, and all of these fall within the protection scope of the present invention.

Claims

1. A lifting-type tea sorting device for agriculture, characterized in that, include: A circular frame with support (1); A pair of mirror-symmetrical limiting grooves (2) are provided on the surface corresponding to the top opening of the circular frame (1), and a screen (3) is provided between the two limiting grooves (2) and snapped into the inside of the circular frame (1) for multi-level sorting of tea leaves; The lifting mechanism (4) is used to shake the tea leaves that have entered the screen (3) up and down. When the lifting mechanism (4) shakes up and down in conjunction with the screen (3), the top of the circular frame (1) is fitted with a matching top plate (5) with lifting function. The top center of the top plate (5) is connected to a feed hopper (6) for tea leaves to be introduced from the feed hopper (6) into the screen (3) for multi-stage sorting. The top plate (5) is provided with a pair of elastic parts (7) located in the limiting groove (2) and used to abut against the screen (3).

2. The tea leaf lifting and sorting device in agriculture according to claim 1, characterized in that, A pair of support plates (8) are fixed on the surface corresponding to the bottom opening of the circular frame (1). A placement base plate (9) is fixed on the bottom of the support plate (8). A circular collection frame (10) corresponding to the bottom of the screen (3) is provided at the top center of the placement base plate (9).

3. The tea leaf lifting and sorting device in agriculture according to claim 1, characterized in that, The screen component (3) includes an upper screen cylinder (31), on which a limiting plate (32) is fixed and fits against the inner wall of the limiting groove (2). The inner bottom wall of the upper screen cylinder (31) is evenly distributed with screen holes one (33). The bottom of the upper screen cylinder (31) is detachably connected to a lower screen cylinder (34). The top of the lower screen cylinder (34) and the upper screen cylinder (31) are both open. The inner bottom wall of the lower screen cylinder (34) is evenly distributed with screen holes two (35). The diameter of the screen holes two (35) is smaller than the diameter of the screen holes one (33).

4. The tea leaf lifting and sorting device in agriculture according to claim 3, characterized in that, The top of the lower screen cylinder (34) is provided with a threaded groove (36), and the bottom of the upper screen cylinder (31) is fixed with a threaded connecting ring (37) that is threaded along the threaded groove (36).

5. The tea leaf lifting and sorting device in agriculture according to claim 2, characterized in that, The lifting mechanism (4) includes a rotating rod (41) rotatably disposed between the two support plates (8). A second drive unit (42) connected to one end of the rotating rod (41) is installed on the surface of the support plate (8). A pair of cams (43) that abut against the bottom of the lower screen cylinder (34) are fixed on the surface of the rotating rod (41).

6. The tea leaf lifting and sorting device in agriculture according to claim 1, characterized in that, A pair of mirror-symmetrical extension edges (11) are fixed on the top plate (5). A drive unit (12) is installed at the bottom of the extension edge (11). A mounting plate (13) connected to the circular frame (1) is fixed at the bottom end of the drive unit (12).

7. The tea leaf lifting and sorting device in agriculture according to claim 1, characterized in that, The top diameter of the feed hopper (6) gradually decreases from the bottom diameter.

8. The tea leaf lifting and sorting device in agriculture according to claim 3, characterized in that, The elastic part (7) includes a positioning block (71) fixed between the top and bottom of the top plate (5). The positioning block (71) has a compression cavity (72). A moving block (73) slides on the inner wall of the compression cavity (72). A spring (74) is fixed between the top of the moving block (73) and the inner top wall of the compression cavity (72). A square abutment rod (75) is fixed at the bottom of the moving block (73). The other end of the square abutment rod (75) extends through to the bottom of the positioning block (71). The top of the limiting plate (32) has a square groove (14) that engages with the bottom end of the square abutment rod (75).

9. A tea leaf lifting and sorting device for agriculture according to claim 8, characterized in that, The top of the positioning block (71) is connected to an air guide pipe (76), and the other end of the air guide pipe (76) extends from the top of the top plate (5) to the bottom of the top plate (5) below.

10. A method of using a tea lifting and sorting device in agriculture, comprising the tea lifting and sorting device as described in claim 1, characterized in that, Includes the following steps: Step S1: Slide the tea leaves along the inner wall of the feed hopper (6) into the screen (3) for multi-stage sorting; Step S2: By starting the lifting mechanism (4), the screen (3) is driven to shake up and down in the cooperation of the top plate (5) and the elastic part (7). Step S3: Finally, as the top plate (5) with lifting function moves upward, the screen (3) slides upward along the inner wall of the limiting groove (2) to disengage from the circular frame (1) and the tea leaves that have been sorted in the screen (3) are taken out.

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