Tea screening and grading device

Abstract

The utility model belongs to the field of tea leaf screening, particularly relates to a tea leaf screening and grading device, and aims to solve the problems that when tea leaves are graded and screened in the prior art, a plurality of screening nets are driven by an independent vibration motor to vibrate and screen simultaneously, and the screening nets are inconvenient to turn over and uniformly spread, so that the overall screening effect of the screening nets is poor, and the screening efficiency is high. According to the scheme, the tea leaf screening device comprises a base, a supporting frame is arranged at the top of the base, a fixing frame and a turning and filtering mechanism are fixedly arranged on the top side of the supporting frame, and the turning and filtering mechanism is arranged on the fixing frame and used for turning and screening tea leaves in a lower screening frame, a middle screening frame and an upper screening frame. When the tea leaf screening device is used and tea leaves are screened in a classified mode, a vibrating motor does not need to be independently used for driving a plurality of screening nets to conduct vibration screening at the same time, the screening frame can be turned over and evenly scattered, the overall screening effect of the screening frame is enhanced, and the screening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tea screening, in particular to a tea screening and grading device. Background Art

[0002] Tea, the components of tea include catechins, cholestenone, caffeine, inositol, folic acid, and pantothenic acid, which are beneficial to health. For tea beverages made from tea, since the sizes and shapes of the collected tea leaves are different, the grades of the products are also different. Therefore, during the processing of dry tea leaves, it is necessary to screen and grade the tea leaves;

[0003] After retrieval, a patent with the authorization announcement number CN210304489U proposes a tea grading and screening device. The following problems exist in this technical solution:

[0004] Currently, when screening and grading tea leaves, since only a single vibration motor is relied on to drive multiple screening meshes to vibrate and screen simultaneously, and it is not convenient to turn over and evenly distribute the screening meshes separately, the overall screening effect of the screening meshes is poor, reducing the screening efficiency;

[0005] In view of the above problems, the utility model document proposes a tea screening and grading device. Content of the Utility Model

[0006] The utility model provides a tea screening and grading device, which solves the shortcomings in the prior art that when screening and grading tea leaves, since only a single vibration motor is relied on to drive multiple screening meshes to vibrate and screen simultaneously, and it is not convenient to turn over and evenly distribute the screening meshes separately, the overall screening effect of the screening meshes is poor, reducing the screening efficiency.

[0007] The utility model provides the following technical solution:

[0008] A tea screening and grading device, comprising:

[0009] A base, a support frame is arranged on the top of the base, a fixed frame is fixedly arranged on the top side of the support frame, and a lower screening frame, a middle screening frame and an upper screening frame are respectively arranged between the two inner walls of the support frame;

[0010] A turning and filtering mechanism, which is arranged on the fixed frame and is used for turning and filtering the tea leaves in the lower screening frame, the middle screening frame and the upper screening frame.

[0011] In a possible design, the turning and filtering mechanism includes a first motor, a driving rod, a rotating rod, an upper turning plate, two rotating frames, two middle turning plates, two connecting frames, and two lower turning plates. The first motor is fixedly installed at the top of the fixed frame. The output end of the first motor penetrates the bottom side of the fixed frame and extends to the bottom of the fixed frame. The output end of the first motor is fixed to the top end of the driving rod through a coupling. The top end of the rotating rod is fixed to the bottom end of the driving rod. The upper turning plate is fixedly arranged at the bottom end of the rotating rod and is used for evenly turning and filtering the tea leaves in the upper screening frame.

[0012] In a possible design, both of the two rotating frames are fixedly arranged on the outer wall of the driving rod. The two middle turning plates are respectively fixedly arranged at the bottom ends of the two rotating frames and are used for evenly turning and filtering the tea leaves in the middle screening frame. The two connecting frames are respectively fixedly arranged on one side of the two rotating frames. The two lower turning plates are respectively fixedly arranged at the bottom ends of the two connecting frames and are used for evenly turning and filtering the tea leaves in the lower screening frame.

[0013] In a possible design, a sliding groove is formed on the top side of the base. A slider is slidably connected inside the sliding groove. The top side of the slider is fixed to the bottom side of the support frame. A second motor is fixedly arranged on one side of the base. The output end of the second motor penetrates one side of the base and extends into the sliding groove. The output end of the second motor is fixedly provided with a reciprocating lead screw through a coupling. The outer wall of the reciprocating lead screw is threadedly connected to the inside of the slider.

[0014] In a possible design, cover plates for covering the sliding groove are fixedly arranged on both sides of the support frame.

[0015] In a possible design, the lower screening frame is fixedly arranged between the two sides of the inner wall of the support frame. A connecting rod is fixedly arranged on the bottom side of the inner wall of the lower screening frame. The middle screening frame is fixedly arranged on the outer wall of the connecting rod. The upper screening frame is fixedly arranged at the top end of the connecting rod. A plurality of small-sized filter holes are formed on the bottom side of the inner wall of the lower screening frame. A plurality of medium-sized filter holes are formed on the bottom side of the inner wall of the middle screening frame. A plurality of large-sized filter holes are formed on the bottom side of the inner wall of the upper screening frame.

[0016] In a possible design, a collection frame corresponding to the plurality of small-sized filter holes is arranged on the bottom side of the inner wall of the support frame. Limit blocks for limiting and placing the collection frame are fixedly arranged in pairs and symmetrically on the bottom side of the inner wall of the support frame.

[0017] In this application, during use, first add the tea leaves to be screened into the upper screening frame, and then turn on the first motor to operate. The output end of the first motor drives the driving rod to rotate through a coupling. The rotational movement of the driving rod is the core power for the operation of the flipping and filtering mechanism. The bottom end of the driving rod is connected to the rotating rod. As the driving rod rotates, the rotating rod and the upper flipping plate at its bottom also rotate synchronously. The rotational movement of the upper flipping plate evenly flips the tea leaves in the upper screening frame, promoting the tea leaves to pass through the large-sized filter holes for preliminary screening. At the same time, two rotating frames are fixed on the outer wall of the driving rod, and a middle flipping plate is fixed at the bottom of each rotating frame, which can flip and screen the tea leaves in the middle screening frame. The two connecting frames are respectively connected to one side of the rotating frame, and a lower flipping plate is fixed at the bottom of each connecting frame, which can flip and screen the tea leaves in the lower screening frame. Thus, the entire flipping and filtering mechanism can simultaneously flip the tea leaves in the three-layer screening frames, improving the screening efficiency. Therefore, when grading and screening the tea leaves, there is no need to rely solely on a vibration motor to drive multiple sieve meshes to vibrate and screen simultaneously. It is convenient to flip and evenly disperse the tea leaves in the screening frames respectively, enhancing the overall screening effect of the screening frames and improving the screening efficiency.

[0018] While screening the tea leaves, turn on the second motor to operate. The output end of the second motor drives the reciprocating lead screw to rotate. The reciprocating lead screw is internally threaded with the slider. Therefore, when the reciprocating lead screw rotates, the slider realizes reciprocating movement in the chute. Since the top side of the slider is fixed to the bottom side of the support frame, the support frame and the screening frame inside it also move reciprocally with the slider. Thus, the reciprocating movement helps the tea leaves to continuously change positions during the screening process, reducing the blockage phenomenon and further improving the screening effect. During the screening process, the tea leaves first fall from the upper screening frame and gradually pass through the middle screening frame into the lower screening frame, and are classified through filter holes of different sizes, namely small-sized filter holes, medium-sized filter holes, and large-sized filter holes. The large-sized tea leaves will be left in the upper screening frame, the medium-sized tea leaves pass through the large-sized filter holes and fall into the middle screening frame, and the small-sized tea leaves further pass through the medium-sized filter holes and fall into the lower screening frame, improving the effect of tea leaf grading. The bottom side of the inner wall of the support frame is provided with a collection frame corresponding to multiple small-sized filter holes, which is used to collect the fine tea leaf impurities and dust after screening. The collection frame is placed in a limited position through a limiting block to ensure the stability during the collection process and facilitate subsequent processing.

[0019] In this utility model, for the tea leaf screening and grading device, the flipping and filtering mechanism evenly flips the tea leaves in the upper screening frame, promoting the tea leaves to pass through the large-sized filter holes for preliminary screening, can flip and screen the tea leaves in the middle screening frame, and can flip and screen the tea leaves in the lower screening frame. Thus, the entire flipping and filtering mechanism can simultaneously flip the tea leaves in the three-layer screening frames, improving the screening efficiency.

[0020] In the present utility model, for the tea leaf screening and grading device, through the arrangement of the chute, slider, reciprocating lead screw and the second motor structure, the support frame and the screening frame inside it can be driven to move reciprocally along with the slider. Furthermore, the reciprocating motion helps the tea leaves to continuously change their positions during the screening process, reducing the blockage phenomenon and further improving the screening effect.

[0021] In the present utility model, when grading and screening tea leaves, it is not necessary to rely solely on a vibration motor to drive multiple sieve meshes to vibrate and screen simultaneously. This is beneficial for realizing the flipping and uniform spreading of the screening frame respectively, enhancing the overall screening effect of the screening frame and improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of a tea leaf screening and grading device provided by an embodiment of the present utility model;

[0023] Figure 2 It is a structural schematic diagram of the screening frame of a tea leaf screening and grading device provided by an embodiment of the present utility model;

[0024] Figure 3 It is a structural schematic diagram of the turning and filtering mechanism of a tea leaf screening and grading device provided by an embodiment of the present utility model;

[0025] Figure 4 It is a structural schematic diagram of the base of a tea leaf screening and grading device provided by an embodiment of the present utility model.

[0026] Reference Signs:

[0027] 1. Base; 2. Support Frame; 3. Fixed Frame; 4. Lower Screening Frame; 5. Middle Screening Frame; 6. Upper Screening Frame; 7. Connecting Rod; 8. Small-sized Filter Hole; 9. Medium-sized Filter Hole; 10. Large-sized Filter Hole; 11. First Motor; 12. Driving Rod; 13. Rotating Rod; 14. Upper Flipping Plate; 15. Rotating Frame; 16. Middle Flipping Plate; 17. Connecting Frame; 18. Lower Flipping Plate; 19. Chute; 20. Slider; 21. Reciprocating Lead Screw; 22. Second Motor; 23. Collection Frame; 24. Cover Plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Embodiment 1

[0030] Please refer to Figures 1 - 4 , a grading device, comprising:

[0031] Base 1, a support frame 2 is arranged on the top of the base 1, a fixing frame 3 is fixedly arranged on the top side of the support frame 2, and a lower screening frame 4, a middle screening frame 5 and an upper screening frame 6 are respectively arranged between the two sides of the inner wall of the support frame 2;

[0032] A turning and filtering mechanism is arranged on the fixing frame 3 for turning and screening the tea leaves in the lower screening frame 4, the middle screening frame 5 and the upper screening frame 6. The turning and filtering mechanism includes a first motor 11, a driving rod 12, a rotating rod 13, an upper turning plate 14, two rotating frames 15, two middle turning plates 16, two connecting frames 17 and two lower turning plates 18. The first motor 11 is fixedly installed on the top of the fixing frame 3, the output end of the first motor 11 penetrates through the bottom side of the fixing frame 3 and extends to the bottom of the fixing frame 3, and the output end of the first motor 11 is fixed to the top end of the driving rod 12 through a coupling. The top end of the rotating rod 13 is fixed to the bottom end of the driving rod 12, and the upper turning plate 14 is fixedly arranged at the bottom end of the rotating rod 13 for evenly turning and screening the tea leaves in the upper screening frame 6.

[0033] Turn on the first motor 11 to operate. Its output end drives the driving rod 12 to rotate through the coupling. The rotational movement of the driving rod 12 is the core power for the operation of the turning and filtering mechanism. The bottom end of the driving rod 12 is connected to the rotating rod 13. As the driving rod rotates, the rotating rod 13 and the upper turning plate 14 at its bottom end also rotate synchronously. The rotational movement of the upper turning plate 14 evenly turns the tea leaves in the upper screening frame 6, promoting the tea leaves to pass through the large-sized filter holes 10 for preliminary screening.

[0034] The two rotating frames 15 are both fixedly arranged on the outer wall of the driving rod 12. The two middle turning plates 16 are respectively fixedly arranged at the bottom ends of the two rotating frames 15 for evenly turning and screening the tea leaves in the middle screening frame 5. The two connecting frames 17 are respectively fixedly arranged on one side of the two rotating frames 15. The two lower turning plates 18 are respectively fixedly arranged at the bottom ends of the two connecting frames 17 for evenly turning and screening the tea leaves in the lower screening frame 4. At the same time, two rotating frames 15 are fixed on the outer wall of the driving rod 12. A middle turning plate 16 is fixed at the bottom of each rotating frame 15, which can turn and screen the tea leaves in the middle screening frame 5. The two connecting frames 17 are respectively connected to one side of the rotating frame 15, and a lower turning plate 18 is fixed at the bottom of it, which can turn and screen the tea leaves in the lower screening frame 4. Thus, the entire turning and filtering mechanism can turn the tea leaves in the three-layer screening frames simultaneously, improving the screening efficiency.

[0035] A chute 19 is formed on the top side of the base 1. A slider 20 is slidably connected inside the chute 19. The top side of the slider 20 is fixed to the bottom side of the support frame 2. A second motor 22 is fixedly arranged on one side of the base 1. The output end of the second motor 22 penetrates through one side of the base 1 and extends into the inside of the chute 19. The output end of the second motor 22 is fixedly provided with a reciprocating lead screw 21 through a coupling. The outer wall of the reciprocating lead screw 21 is threadedly connected to the inside of the slider 20. When the second motor 22 is turned on and runs, its output end drives the reciprocating lead screw 21 to rotate. When the reciprocating lead screw 21 rotates, it will drive the slider 20 to move reciprocally within the chute 19. Therefore, the support frame 2 and the screening frame inside it also move reciprocally along with the slider 20. Furthermore, the reciprocating motion helps the tea leaves to continuously change their positions during the screening process, reducing the blockage phenomenon and further improving the screening effect.

[0036] Cover plates 24 for covering the chute 19 are fixedly arranged on both sides of the support frame 2. While the support frame 2 moves reciprocally, it will drive the cover plates 24 on both sides to move. The cover plates 24 can cover the chute 19 to prevent tea leaves from falling into the chute 19, thereby extending the service life of the device.

[0037] This application can be used in the field of tea leaf screening and also in other fields applicable to this application.

[0038] Embodiment 2

[0039] Reference Figures 1 - 4 , on the basis of Embodiment 1, an improvement is made: A tea leaf screening and grading device, which is applied to the field of tea leaf screening;

[0040] The lower screening frame 4 is fixedly arranged between the two sides of the inner wall of the support frame 2. A connecting rod 7 is fixedly arranged on the bottom side of the inner wall of the lower screening frame 4. The middle screening frame 5 is fixedly arranged on the outer wall of the connecting rod 7. The upper screening frame 6 is fixedly arranged at the top of the connecting rod 7. A plurality of small-sized filter holes 8 are formed on the bottom side of the inner wall of the lower screening frame 4. A plurality of medium-sized filter holes 9 are formed on the bottom side of the inner wall of the middle screening frame 5. A plurality of large-sized filter holes 10 are formed on the bottom side of the inner wall of the upper screening frame 6. The tea leaves will first fall from the upper screening frame 6 and gradually into the lower screening frame 4 through the middle screening frame 5, and are graded through the filter holes of different sizes, namely small-sized filter holes 8, medium-sized filter holes 9, and large-sized filter holes 10. The large-sized tea leaves will be left inside the upper screening frame 6. The medium-sized tea leaves fall into the middle screening frame 5 through the large-sized filter holes 10. The small-sized tea leaves further fall into the lower screening frame 4 through the medium-sized filter holes 9, improving the effect of tea leaf grading.

[0041] On the bottom side of the inner wall of the support frame 2, a collection frame 23 corresponding to a plurality of small filter holes 8 is provided. On the bottom side of the inner wall of the support frame 2, two-by-two symmetrically fixed limit blocks for limiting and placing the collection frame 23 are provided. On the bottom side of the inner wall of the support frame 2, a collection frame 23 corresponding to a plurality of small filter holes 8 is provided, which is used to collect fine tea impurities and dust after screening. The collection frame 23 is placed in a limited position through the limit blocks to ensure the stability during the collection process and facilitate subsequent processing.

[0042] However, as is well known to those skilled in the art, the working principles and wiring methods of the first motor 11 and the second motor 22 devices are common knowledge, and they both belong to conventional means or well-known common sense, so they will not be elaborated here. Those skilled in the art can make arbitrary selections according to their needs or convenience.

[0043] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model; without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A tea screening and grading device, characterized in that: include: A base (1), wherein a support frame (2) is arranged on the top of the base (1), a fixing frame (3) is fixedly arranged on the top side of the support frame (2), and a lower screening frame (4), a middle screening frame (5) and an upper screening frame (6) are respectively arranged between two sides of the inner wall of the support frame (2); The turning and filtering mechanism is arranged on the fixed frame (3) and is used for turning and filtering the tea leaves in the lower screening frame (4), the middle screening frame (5) and the upper screening frame (6).

2. A tea screening and grading device according to claim 1, characterized in that: The filtering mechanism comprises a first motor (11), a driving rod (12), a rotating rod (13), an upper flip plate (14), two rotating frames (15), two middle flip plates (16), two connecting frames (17) and two lower flip plates (18); the first motor (11) is fixedly mounted on the top of the fixed frame (3); the output end of the first motor (11) passes through the bottom side of the fixed frame (3) and extends to the bottom of the fixed frame (3); the output end of the first motor (11) is fixed to the top end of the driving rod (12) through a coupling; the top end of the rotating rod (13) is fixed to the bottom end of the driving rod (12); the upper flip plate (14) is fixedly arranged at the bottom end of the rotating rod (13) and is used to evenly flip and filter the tea leaves in the upper screening frame (6).

3. A tea screening and grading device according to claim 2, characterized in that: The two rotating frames (15) are fixedly arranged on the outer wall of the driving rod (12); the two middle turning plates (16) are respectively fixedly arranged at the bottom ends of the two rotating frames (15) and are used to evenly turn over and filter the tea leaves in the middle screening frame (5); the two connecting frames (17) are respectively fixedly arranged on one side of the two rotating frames (15); and the two lower turning plates (18) are respectively fixedly arranged at the bottom ends of the two connecting frames (17) and are used to evenly turn over and filter the tea leaves in the lower screening frame (4).

4. A tea screening and grading device according to claim 1, characterized in that: A slide groove (19) is provided on the top side of the base (1), a slider (20) is slidably connected inside the slide groove (19), the top side of the slider (20) is fixed to the bottom side of the support frame (2), a second motor (22) is fixedly provided on one side of the base (1), an output end of the second motor (22) passes through one side of the base (1) and extends to the inside of the slide groove (19), a reciprocating screw (21) is fixedly provided on the output end of the second motor (22) via a coupling, and an outer wall of the reciprocating screw (21) is threadedly connected to the inside of the slider (20).

5. A tea screening and grading device according to claim 4, characterized in that: Cover plates (24) for covering the slide grooves (19) are fixedly arranged on both sides of the support frame (2).

6. A tea screening and grading device according to claim 1, characterized in that: The lower screening frame (4) is fixedly arranged between two sides of the inner wall of the support frame (2); a connecting rod (7) is fixedly arranged on the bottom side of the inner wall of the lower screening frame (4); the middle screening frame (5) is fixedly arranged on the outer wall of the connecting rod (7); the upper screening frame (6) is fixedly arranged on the top of the connecting rod (7); a plurality of small filter holes (8) are opened on the bottom side of the inner wall of the lower screening frame (4); a plurality of medium filter holes (9) are opened on the bottom side of the inner wall of the middle screening frame (5); and a plurality of large filter holes (10) are opened on the bottom side of the inner wall of the upper screening frame (6).

7. A tea screening and grading device according to claim 6, characterized in that: The bottom side of the inner wall of the support frame (2) is provided with a collection frame (23) corresponding to the plurality of small filter holes (8), and the bottom side of the inner wall of the support frame (2) is symmetrically and fixedly provided with limit blocks for limiting the placement of the collection frames (23).

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