A white tea grading and winnowing apparatus
By designing a white tea grading and air separation device with upper and lower boxes and screens, combined with a blower and a spiral conveyor, secondary grading of white tea is achieved, solving the problem of debris and residue residue in existing devices and improving the grading effect of white tea.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI RAOFENG TEA DEV CO LTD
- Filing Date
- 2025-08-27
- Publication Date
- 2026-07-24
AI Technical Summary
Existing white tea grading and air separation devices only screen once, resulting in a large amount of white tea fragments and residue remaining, which reduces the quality of white tea.
A white tea grading and air separation device is designed, which adopts a two-layer box and screen structure, combined with a fan and a spiral conveyor to realize secondary grading and air separation of white tea, and prevents external impurities from entering through a dust cover.
This improved the grading and winnowing quality of white tea, reduced the residue of debris and dregs, and enhanced the purity and quality of white tea.
Smart Images
Figure CN224542248U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tea grading devices, and more particularly to a white tea grading wind separation device. Background Technology
[0002] White tea is a lightly fermented tea, known for its unique processing techniques and light, natural taste. It is one of the six major tea categories in China and is mainly produced in Fuding, Zhenghe and other places in Fujian Province. After picking, the tea leaves undergo natural withering, that is, they are dried in a well-ventilated environment or slightly heated to allow the moisture in the leaves to gradually evaporate.
[0003] After the moisture evaporates, white tea can enter the quality grading process. The grading process commonly used in the market is mostly grading by air separation. Because white tea is in a relatively dry state after drying, it is easy to produce a few fragments. The quality of white tea is distinguished by the weight of the white tea. Most of the white tea grading air separation devices on the market only put the dried white tea into the fan screen layer once before conveying the white tea to the next packaging process. They cannot separate the dried white tea to a relatively pure state, leaving more white tea fragments and residues, thus reducing the quality of white tea.
[0004] Therefore, we need to design a white tea grading and air separation device. Utility Model Content
[0005] In order to overcome the shortcomings of existing white tea grading and wind separation methods that only screen once and leave a lot of white tea fragments and residues, this utility model provides a white tea grading and wind separation device.
[0006] The technical solution of this utility model is as follows: a white tea grading and air separation device, including a support frame, a box body, a feed inlet, a conveying pipe, a fan, a first screen, a second screen, and a discharge outlet. The box body is fixedly connected to the top of the support frame. The conveying pipe is provided on the top of the box body. An opening is provided on the left side of the top of the box body. An opening is provided on the left side of the bottom of the conveying pipe. The opening on the left side of the top of the box body and the opening on the left side of the bottom of the conveying pipe are interconnected. The feed inlet is fixedly connected to the right side of the top of the conveying pipe. The box body is divided into an upper layer and a lower layer. The first screen is slidably connected to the bottom left side of the upper layer of the box body. The second screen is slidably connected to the bottom right side of the upper layer of the box body. The second screen is also slidably connected to the bottom left side of the lower layer of the box body. The first screen is also slidably connected to the bottom right side of the upper layer of the box body. A fan is provided on the left side of the upper layer of the box body. A fan is also provided on the right side of the lower layer of the box body. The discharge outlet is provided on the left side of the bottom of the lower layer of the box body.
[0007] As a preferred technical solution of this utility model, it also includes a stop block, a threaded rod, a guide rod, and a limiting block. The tops of the two guide rods are fixedly connected to the inner wall of the box, and the lower parts of the two guide rods are slidably connected to the stop blocks. The front parts of the two stop blocks are threadedly connected to the threaded rods, which are rotatably connected to the box. The lower parts of the two guide rods are provided with limiting blocks, and the rear parts of the two limiting blocks are fixedly connected to the inner wall of the box. The limiting blocks and the stop blocks are in contact and cooperate.
[0008] As a preferred technical solution of this utility model, it also includes a motor and a spiral conveyor paddle. The motor is located on the right side of the conveying pipe, and the spiral conveyor paddle located inside the conveying pipe is fixedly connected to the left side of the motor.
[0009] As a preferred technical solution of this utility model, it also includes an observation window, with an observation window provided on the right side of the upper layer of the box and an observation window also provided on the left side of the lower layer of the box.
[0010] As a preferred technical solution of this utility model, it also includes a dust cover, with a dust cover fixedly connected to the left side of the upper layer of the box and a dust cover connected to the right side of the lower layer of the box.
[0011] As a preferred technical solution of this utility model, it also includes a fixing block, with fixing blocks fixedly connected to both the front and rear of the conveying pipe.
[0012] Beneficial effects: 1. This utility model, by setting up an upper and lower box and a screen, takes advantage of the different qualities of white tea. After turning on the fan, white tea of different qualities can be classified and then collected by the screen. The upper and lower box and screen can perform secondary grading and air separation of white tea, which improves the quality of white tea after grading and air separation.
[0013] 2. This utility model solves the problem of external impurities entering the housing when the fan is running by setting up a dustproof net.
[0014] 3. By setting up a motor and a spiral conveyor, the spiral conveyor conveys the material to the box at a uniform speed for graded air separation, reducing the possibility of material blockage in the conveying pipe. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a partial cross-sectional view of the conveying pipe of this utility model.
[0017] Figure 3 This is a schematic diagram of the structure of the feed inlet, fixing block and box body of this utility model.
[0018] Figure 4 This is a plan view of the present invention.
[0019] Figure 5 This is a schematic diagram of the material outlet, limiting block, and guide rod of this utility model.
[0020] The components are: 1-support frame, 2-box body, 3-feed inlet, 4-conveying pipe, 5-motor, 6-screw conveyor, 7-fixed block, 8-fan, 81-dust cover, 9-first screen, 10-second screen, 11-stop block, 12-threaded rod, 13-guide rod, 14-limiting block, 15-observation window, 16-discharge port. Detailed Implementation
[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0022] Example: A white tea grading and winnowing device, such as Figures 1-5 As shown, it includes a support frame 1, a box body 2, a feed inlet 3, a conveying pipe 4, a blower 8, a first screen 9, a second screen 10, and a discharge outlet 16. The box body 2 is fixedly connected to the top of the support frame 1. The conveying pipe 4 is located on the top of the box body 2. An opening is located on the left side of the top of the box body 2. An opening is located on the left side of the bottom of the conveying pipe 4. The opening on the left side of the top of the box body 2 and the opening on the left side of the bottom of the conveying pipe 4 are interconnected. The feed inlet 3 is fixedly connected to the right side of the top of the conveying pipe 4. The box body 2 is divided into an upper layer and a lower layer. The first screen 9 is slidably connected to the left side of the bottom of the upper layer of the box body 2. The second screen 10 is slidably connected to the right side of the bottom of the upper layer of the box body 2. The second screen 10 is also slidably connected to the left side of the bottom of the lower layer of the box body 2. The first screen 9 is also slidably connected to the right side of the bottom of the upper layer of the box body 2. The blower 8 is located on the left side of the upper layer of the box body 2. The blower 8 is also located on the right side of the lower layer of the box body 2. The discharge outlet 16 is located on the left side of the bottom of the lower layer of the box body 2.
[0023] like Figure 1 and Figures 3-5 As shown, it also includes a stop block 11, a threaded rod 12, a guide rod 13, and a limiting block 14. The tops of the two guide rods 13 are fixedly connected to the inner wall of the housing 2. The lower parts of the two guide rods 13 are slidably connected to the stop block 11. The front parts of the two stop blocks 11 are threadedly connected to the threaded rod 12, which is rotatably connected to the housing 2. The lower parts of the two guide rods 13 are provided with a limiting block 14. The rear parts of the two limiting blocks 14 are fixedly connected to the inner wall of the housing 2, and the limiting block 14 is in contact with the stop block 11.
[0024] like Figures 1-2 and Figure 5 As shown, it also includes a motor 5 and a spiral conveyor 6. The motor 5 is located on the right side of the conveying pipe 4, and the spiral conveyor 6 located inside the conveying pipe 4 is fixedly connected to the left side of the motor 5.
[0025] like Figure 1 and Figure 5As shown, it also includes an observation window 15. The observation window 15 is connected to the upper right side of the box 2 by bolts, and the observation window 15 is also connected to the lower left side of the box 2 by bolts. The observation window 15 makes it easy to observe the grading and wind selection of white tea inside the box 2.
[0026] like Figure 1 As shown, it also includes a dust cover 81. The dust cover 81 is fixedly connected to the upper left side of the housing 2, and the dust cover 81 is also connected to the lower right side of the housing 2. The dust cover 81 can effectively prevent external impurities from entering the housing 2 when the fan 8 is operating.
[0027] like Figure 1 and Figure 3 As shown, it also includes a fixing block 7, and the front and rear of the conveying pipe 4 are fixedly connected with the fixing block 7.
[0028] Before using the device, it should be placed on a level surface. The operator should first turn on the motor 5 to put the screw conveyor 6 into operation. Then, start the fans 8 on both sides of the chamber 2 via the switch. Next, pour the dried white tea into the feed inlet 3. Subsequently, the screw conveyor 6 inside the conveying pipe 4 will transport the tea to the chamber 2 at a uniform speed for grading and air separation. The fixing blocks 7 on the front and rear sides of the conveying pipe 4 can reduce the impact of the vibration of the conveying pipe 4 on the stability of the chamber 2 when the screw conveyor 6 is operating. The dried white tea is transported to the chamber by the screw conveyor 6. In step 2, the white tea leaves fall onto the first screen 9 on the upper layer of box 2. Since the fan 8 on the left side of the upper layer of box 2 is on, as the white tea falls onto the first screen 9, the lighter pieces are blown onto the second screen 10 on the upper layer of box 2, while the heavier pieces fall onto the first screen 9. The lighter pieces, being smaller, fall through the mesh of the second screen 10 onto the first screen 9 in the lower layer of box 2. Because the fan 8 on the left side of the upper layer of box 2 is on, the lighter pieces fall onto the second screen 10 onto the first screen 9 in the lower layer of box 2. With the blower 8 in the on state, lighter white tea is blown onto the second screen 10 on the lower layer of the chamber 2, while even lighter white tea passes through the second screen 10 and is then output from the outlet 16. The dust cover 81 on the outside of the blower 8 effectively prevents external impurities from entering the chamber 2 while the blower 8 is operating. The operator can then observe the grading and air separation of the white tea inside the chamber 2 through the observation windows 15 on both the upper and lower layers of the chamber 2. When both the first screens 9 on the upper and lower layers of the chamber 2 are relatively full, the threaded rod 12 is rotated clockwise to allow the chamber to... Inside body 2, the blocks 11 move upward under the action of the guide rod 13 until the threaded rod 12 can no longer be rotated. At this point, the top of the block 11 contacts the bottom of the limiting block 14, which raises the block 11 and prevents the white tea that has been graded and air-separated in the first screen 9 from falling into the second screen 10 due to excessive accumulation. The operator stops rotating the threaded rod 12. After all the white tea has been graded and air-separated, the motor 5 and the fan 8 can be turned off. Finally, the operator pulls out the first screen 9 and the second screen 10 of the upper and lower layers of body 2, thus completing the grading and air-separation process of the white tea.
[0029] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A white tea grading and winnowing device, characterized in that: The system includes a support frame (1), a housing (2), an inlet (3), a conveying pipe (4), a fan (8), a first screen (9), a second screen (10), and an outlet (16). The housing (2) is fixedly connected to the top of the support frame (1). The conveying pipe (4) is located on the top of the housing (2). The top left side of the housing (2) has an opening, and the bottom left side of the conveying pipe (4) has an opening. The opening on the top left side of the housing (2) communicates with the opening on the bottom left side of the conveying pipe (4). The inlet is fixedly connected to the top right side of the conveying pipe (4). (3) The box (2) is divided into an upper layer and a lower layer. The first screen (9) is slidably connected to the bottom left of the upper layer of the box (2). The second screen (10) is slidably connected to the bottom right of the upper layer of the box (2). The second screen (10) is also slidably connected to the bottom left of the lower layer of the box (2). The first screen (9) is also slidably connected to the bottom right of the upper layer of the box (2). A fan (8) is provided on the left side of the upper layer of the box (2). A fan (8) is also provided on the right side of the lower layer of the box (2). A discharge port (16) is provided on the left side of the bottom of the lower layer of the box (2).
2. The white tea grading and winnowing device as described in claim 1, characterized in that: It also includes a stop block (11), a threaded rod (12), a guide rod (13), and a limiting block (14). The tops of the two guide rods (13) are fixedly connected to the inner wall of the box (2). The lower parts of the two guide rods (13) are slidably connected to the stop block (11). The front parts of the two stop blocks (11) are threadedly connected to the threaded rod (12). The threaded rod (12) is rotatably connected to the box (2). The lower parts of the two guide rods (13) are provided with a limiting block (14). The rear parts of the two limiting blocks (14) are fixedly connected to the inner wall of the box (2). The limiting block (14) and the stop block (11) are in contact and cooperate.
3. The white tea grading and winnowing device as described in claim 2, characterized in that: It also includes a motor (5) and a spiral conveyor (6). The motor (5) is located on the right side of the conveying pipe (4), and the spiral conveyor (6) located inside the conveying pipe (4) is fixedly connected to the left side of the motor (5).
4. The white tea grading and winnowing device as described in claim 3, characterized in that: It also includes an observation window (15), with an observation window (15) on the upper right side of the box (2) and an observation window (15) on the lower left side of the box (2).
5. The white tea grading and winnowing device as described in claim 4, characterized in that: It also includes a dust cover (81), with a dust cover (81) fixedly connected to the upper left side of the box (2) and a dust cover (81) also connected to the lower right side of the box (2).
6. The white tea grading and winnowing device as described in claim 5, characterized in that: It also includes a fixing block (7), and the front and rear parts of the conveying pipe (4) are fixedly connected with the fixing block (7).