A white tea impurity removal and grading automated production line and white tea grading method

Abstract

The present invention discloses an automated production line for impurity removal and grading of white tea, comprising a first production line and a second production line in parallel, wherein the first production line comprises a No. 1 color sorter and a No. 3 color sorter connected in series, and the second production line comprises a No. 2 color sorter and a No. 4 color sorter connected in series; the discharges from the first discharge port of the No. 1 color sorter and the No. 2 color sorter are combined and transported to the No. 4 color sorter together; the discharges from the No. 2 color sorter and the third discharge port of the No. 1 color sorter are combined and transported to the No. 3 color sorter together; the first discharge port, the third discharge port, and the fourth discharge port of the No. 3 color sorter and the No. 4 color sorter are separated and discharged to form multi-level impurity removal and grading of white tea. The present invention also discloses a white tea grading method. The device of the present invention has a compact structure, a simple process, a short time consumption for grading white tea, a high grading efficiency, a good grading effect, a low cost, a simple operation, and good stability.

Description

Technical Field

[0001] The invention relates to the technical field of white tea fine processing, in particular to an automatic production line for removing impurities and grading white tea and a white tea grading method. Background Art

[0002] As one of the six major types of tea in China, the production and sales of white tea have increased significantly in recent years. Due to the extensive production process of tea, some impurities such as dead leaves, branches, sand and stones, as well as some tea debris, will be mixed into the tea during picking and processing. In the final process of tea production, the finished products need to be graded according to the size of the leaves, the tea debris is removed, the intact tea leaves are retained, and then packaged. In the past, the traditional process method was to screen the tea leaves through multiple manual processes, first remove impurities, then grade, and then package. This caused two problems. The first is that manual labor is prone to errors, and the grading cannot be guaranteed to be accurate, and the efficiency is not high. The second is that there are many processes, impurity removal and grading are mixed, the processing efficiency is low, and it takes a long time. The overall labor of the manufacturer is huge, the cost is high, and the effect is not ideal. Summary of the invention

[0003] The purpose of the present invention is to provide an automated production line for removing impurities and grading white tea and a white tea grading method to solve the above defects.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] An automated production line for removing impurities and grading white tea comprises a first production line and a second production line connected in parallel, wherein the first production line comprises a No. 1 color sorter and a No. 3 color sorter connected in series in sequence, and the second production line comprises a No. 2 color sorter and a No. 4 color sorter connected in series in sequence; the No. 1 color sorter, the No. 2 color sorter, the No. 3 color sorter, and the No. 4 color sorter all adopt three-layer intelligent color sorters, and are all provided with a first discharge port, a second discharge port, a third discharge port, and a fourth discharge port with discharge quality decreasing in sequence; the discharge of the first discharge port of the No. 1 color sorter is combined with the discharge of the first discharge port of the No. 2 color sorter and then transported together to In the No. 4 color sorter; the discharges from the second discharge ports of the No. 1 color sorter, the No. 2 color sorter, the No. 3 color sorter and the No. 4 color sorter are all returned to re-enter their respective color sorters for re-sorting; the discharges from the third discharge port of the No. 2 color sorter are combined with the discharges from the third discharge port of the No. 1 color sorter and conveyed to the No. 3 color sorter together; the discharges from the fourth discharge ports of the No. 1 color sorter and the No. 2 color sorter are combined and conveyed to the recycling and packaging area for recycling; the sorting discharges from the first discharge port, the third discharge port and the fourth discharge port of the No. 3 color sorter and the No. 4 color sorter form multi-level impurity removal and grading of white tea.

[0006] Preferably, the first production line further comprises a No. 1 carding machine, a No. 1 shaking screen, a No. 1 feeding elevator, a No. 1 finished product elevator, a No. 3 carding machine, a No. 3 shaking screen, a No. 3 feeding elevator, and a No. 3 finished product elevator which are connected in series in sequence, the No. 1 color sorter is arranged in series between the No. 1 feeding elevator and the No. 1 finished product elevator, and the No. 3 color sorter is arranged in series between the No. 3 feeding elevator and the No. 3 finished product elevator.

[0007] Preferably, the second production line further comprises a No. 2 combing machine, a No. 2 shaking screen, a No. 2 feeding elevator, a No. 2 finished product elevator, a No. 4 combing machine, a fine tea machine, a No. 4 shaking screen, a No. 4 feeding elevator, and a No. 4 finished product elevator connected in series in sequence, the No. 2 color sorter is arranged in series between the No. 2 feeding elevator and the No. 2 finished product elevator, and the No. 4 color sorter is arranged in series between the No. 4 feeding elevator and the No. 4 finished product elevator.

[0008] Preferably, the second discharge port in the No. 1 color sorter is connected to the No. 1 return material elevator, and the end of the No. 1 return material elevator is arranged above the front end of the No. 1 feeding elevator; the second discharge port in the No. 2 color sorter is connected to the No. 2 return material elevator, and the end of the No. 2 return material elevator is arranged above the front end of the No. 2 feeding elevator; the second discharge port in the No. 3 color sorter is connected to the No. 3 return material elevator, and the end of the No. 3 return material elevator is arranged above the front end of the No. 3 feeding elevator; the second discharge port in the No. 4 color sorter is connected to the No. 4 return material elevator, and the end of the No. 4 return material elevator is arranged above the front end of the No. 4 feeding elevator.

[0009] Preferably, a transfer conveyor 1 is provided at the fourth discharge port of the No. 1 color sorter and the No. 2 color sorter, and the color-sorted defective materials from the fourth discharge port of the No. 1 color sorter and the No. 2 color sorter are automatically transported to the recycling and packaging area through the transfer conveyor 1 for recycling.

[0010] Preferably, a transfer conveyor 2 is provided at the third discharge port of the No. 2 color sorter and the No. 1 color sorter, the end of the transfer conveyor 2 is arranged above the front end of the No. 1 finished product elevator, and the No. 3 combing machine is arranged at the rear end of the No. 1 finished product elevator.

[0011] Preferably, a No. 1 finished product conveyor No. 1 and a No. 2 finished product elevator are respectively arranged at the first discharge ports of the No. 1 color sorter and the No. 2 color sorter, a No. 1 finished product conveyor No. 2 is arranged between the end of the No. 1 finished product conveyor and the No. 2 finished product elevator, and the No. 4 combing machine is installed at the rear end of the No. 2 finished product elevator.

[0012] Preferably, the No. 3 finished product elevator and the No. 4 finished product elevator are respectively arranged at the first discharge ports of the No. 3 color sorter and the No. 4 color sorter.

[0013] Preferably, the discharge positions of the No. 1 finished product conveyor 1, No. 1 finished product conveyor 2, No. 2 finished product elevator, No. 3 finished product elevator and No. 4 finished product elevator are all installed with visual sensors to capture the white tea material transportation situation in real time and send visual signals to the control room; the control room receives various information from all equipment on the first production line and the second production line, and sends operation instructions to realize remote control of the production line.

[0014] Preferably, a white tea grading method comprises the following steps:

[0015] S1, transport the white tea raw material to the No. 1 color sorter and the No. 2 color sorter through the white tea raw material conveying device, and carry out three-level four-discharge intelligent sorting of white tea;

[0016] S2. The sorted materials discharged from the first discharge port of the No. 1 color sorter and the sorted materials discharged from the first discharge port of the No. 2 color sorter are combined and transported to the No. 4 color sorter for another three-level four-discharge intelligent sorting of white tea;

[0017] S3, the sorted discharge from the third discharge port of the No. 2 color sorter and the sorted discharge from the third discharge port of the No. 1 color sorter are combined and transported to the No. 3 color sorter for another three-level four-discharge intelligent sorting of white tea;

[0018] S4, the sorted materials discharged from the second discharging ports of the No. 1 color sorter, the No. 2 color sorter, the No. 3 color sorter, and the No. 4 color sorter are returned to their respective color sorters for re-sorting;

[0019] S5, the materials discharged from the fourth discharge ports of the No. 1 color sorter and the No. 2 color sorter are collected and transported to the recycling and packaging area for recycling;

[0020] S6. The materials are discharged through the first discharge port, the third discharge port and the fourth discharge port of the No. 3 color sorter and the No. 4 color sorter, thus forming a multi-level impurity-removed and graded finished product of white tea.

[0021] The beneficial effects of the present invention are:

[0022] (1) The white tea impurity removal and grading automated production line and white tea grading method of the present invention form two automated white tea sorting production lines by connecting two color sorters and a matching conveyor in series, thereby realizing the functions of automated sorting and grading synchronization. Except for loading and unloading, other processes do not require manual operation, thereby greatly improving efficiency and increasing sorting accuracy;

[0023] (2) The automated production line for removing impurities and grading of white tea and the method for grading white tea of ​​the present invention arrange the first production line and the second production line in parallel so that the materials that have undergone one round of color sorting and grading in the two production lines are separately transferred and then concentrated to the corresponding color sorters for the second round of color sorting and grading. The No. 3 color sorter can process all the finished products at the third discharge port of the No. 1 color sorter and the No. 2 color sorter, and the No. 4 color sorter can concentrate on processing all the finished products at the first discharge port of the No. 1 color sorter and the No. 2 color sorter, thereby increasing the grading efficiency of the No. 3 color sorter and the No. 4 color sorter;

[0024] (3) In the automated production line for removing impurities and grading white tea and the method for grading white tea of ​​the present invention, the discharge from the second discharge port of all color sorters is transported to the loading elevator through the return elevator and directly returned to the original color sorter for re-sorting. No other process is required to collect the discharge from the second discharge port for further processing, thereby improving the overall utilization rate of tea leaves;

[0025] (4) In the automated production line for removing impurities and grading white tea and the method for grading white tea of ​​the present invention, the defective products discharged from the fourth discharge ports of the No. 1 color sorter and the No. 2 color sorter are transported to the collection area by a transfer conveyor and uniformly recycled;

[0026] (5) The automated production line for removing impurities and grading white tea and the method for grading white tea of ​​the present invention are both visually monitored in real time during the transportation of white tea leaves, and visual signals are transmitted to the central control room. Operators can adjust the production speed of each device on the production line at any time according to the material accumulation situation to ensure that the production efficiency of the entire production line reaches the optimal state. Moreover, all of them can be remotely controlled in the central control room, without the need for personnel to go to the production line for manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 : A schematic structural diagram of an automated production line for removing impurities and grading white tea of ​​the present invention;

[0028] Figure 2 : A side view of the automated production line for removing impurities and grading white tea of ​​the present invention;

[0029] Figure 3 : A top view of the automated production line for removing impurities and grading white tea of ​​the present invention;

[0030] Figure 4 : A structural side view of the No. 1 color sorter, the No. 2 color sorter, the No. 3 color sorter and the No. 4 color sorter of the present invention. DETAILED DESCRIPTION

[0031] Combined with Figure 1-4 , the specific implementation mode of the present invention is described as follows:

[0032] like Figure 1-4As shown, an automated production line for removing impurities and grading white tea includes a first production line and a second production line connected in parallel. The first production line includes a No. 1 color sorter 10 and a No. 3 color sorter 30 connected in series, and the second production line includes a No. 2 color sorter 20 and a No. 4 color sorter 40 connected in series.

[0033] like Figure 4 As shown, the color sorter No. 10, the color sorter No. 20, the color sorter No. 30, and the color sorter No. 40 all adopt three-layer intelligent color sorters, and are all provided with a first discharge port (i.e., discharge port 1), a second discharge port (i.e., discharge port 2), a third discharge port (i.e., discharge port 3), and a fourth discharge port (i.e., discharge port 4) with discharge qualities decreasing in sequence.

[0034] The first production line also includes a combing machine No. 101, a shaking screen No. 102, a feeding elevator No. 103, a finished product elevator No. 107, a combing machine No. 301, a shaking screen No. 302, a feeding elevator No. 303, and a finished product elevator No. 305 which are connected in series in sequence. The color sorter No. 10 is arranged in series between the feeding elevator No. 103 and the finished product elevator No. 107, and the color sorter No. 30 is arranged in series between the feeding elevator No. 303 and the finished product elevator No. 305.

[0035] The second production line also includes a No. 2 combing machine 201, a No. 2 shaking screen 202, a No. 2 feeding elevator 203, a No. 2 finished product elevator 205, a No. 4 combing machine 401, a fine tea machine 406, a No. 4 shaking screen 402, a No. 4 feeding elevator 403, and a No. 4 finished product elevator 405 which are connected in series in sequence. The No. 2 color sorter 20 is arranged in series between the No. 2 feeding elevator 203 and the No. 2 finished product elevator 205, and the No. 4 color sorter 40 is arranged in series between the No. 4 feeding elevator 403 and the No. 4 finished product elevator 405.

[0036] The first color sorter 10 and the second color sorter 20 are arranged in parallel and loaded at the same time. The raw materials pass through the first carding machine 101 and the second carding machine 201, the first shaking screen 102 and the second shaking screen 202, and then pass through the first feeding elevator 103 and the second feeding elevator 203 to enter the first color sorter 10 and the second color sorter 20 respectively to remove impurities and sort the white tea raw materials.

[0037] The second discharge port of the No. 1 color sorter 10 is connected to the No. 1 return material elevator 104, and the end of the No. 1 return material elevator 104 is arranged above the front end of the No. 1 feeding elevator 103; the second discharge port of the No. 2 color sorter 20 is connected to the No. 2 return material elevator 204, and the end of the No. 2 return material elevator 204 is arranged above the front end of the No. 2 feeding elevator 203; the second discharge port of the No. 3 color sorter 30 is connected to the No. 3 return material elevator 304, and the end of the No. 3 return material elevator 304 is arranged above the front end of the No. 3 feeding elevator 303; the second discharge port of the No. 4 color sorter 40 is connected to the No. 4 return material elevator 404, and the end of the No. 4 return material elevator 404 is arranged above the front end of the No. 4 feeding elevator 403. The discharges of the second discharge ports of the No. 1 color sorter 10, the No. 2 color sorter 20, the No. 3 color sorter 30, and the No. 4 color sorter 40 are all returned to re-enter their respective color sorters for re-sorting.

[0038] A transfer conveyor 206 is provided at the fourth discharge port of the No. 1 color sorter 10 and the No. 2 color sorter 20. The defective materials from the fourth discharge ports of the No. 1 color sorter 10 and the No. 2 color sorter 20 are collected by the transfer conveyor 206 and automatically transported to the recycling and packaging area for recycling.

[0039] A transfer conveyor 207 is provided at the third discharge port of the No. 2 color sorter 20 and the No. 1 color sorter 10, and the end of the transfer conveyor 207 is arranged above the front end of the No. 1 finished product elevator 107, and the No. 3 combing machine 301 is arranged at the rear end of the No. 1 finished product elevator 107. The discharge from the third discharge port of the No. 2 color sorter 20 is combined with the discharge from the third discharge port of the No. 1 color sorter 10 and then transported to the No. 3 color sorter 30 together.

[0040] The first discharge ports of the No. 1 color sorter 10 and the No. 2 color sorter 20 are respectively provided with a No. 1 finished product conveyor 105 and a No. 2 finished product elevator 205, a No. 1 finished product conveyor 206 is provided between the end of the No. 1 finished product conveyor 105 and the No. 2 finished product elevator 205, and the No. 4 combing machine 401 is installed at the rear end of the No. 2 finished product elevator 205. The discharge from the first discharge port of the No. 1 color sorter 10 and the discharge from the first discharge port of the No. 2 color sorter 20 are combined and transported to the No. 4 color sorter 40 together.

[0041] The No. 3 finished product elevator 305 and the No. 4 finished product elevator 405 are respectively arranged at the first discharge ports of the No. 3 color sorter 30 and the No. 4 color sorter 40. The finished products at the first discharge ports of the No. 3 color sorter 30 and the No. 4 color sorter 40 are respectively transported to the packaging area through the No. 3 finished product elevator 305 and the No. 4 finished product elevator 405, and the finished products at the third discharge port and the fourth discharge port are respectively collected and packaged. Through the sorting and discharging of the first discharge port, the third discharge port, and the fourth discharge port of the No. 3 color sorter 30 and the No. 4 color sorter 40, multi-level impurity removal and grading of white tea are formed.

[0042] Visual sensors are installed at the discharge positions of finished product conveyor No. 1 105, finished product conveyor No. 1 106, finished product elevator No. 205, finished product elevator No. 305 and finished product elevator No. 405 to capture the white tea material transportation situation in real time and send visual signals to the control room; the control room receives various information from all equipment on the first production line and the second production line, and sends operating instructions to realize remote control of the production line.

[0043] A white tea grading method comprises the following steps:

[0044] S1, the white tea raw material is simultaneously transported to the No. 1 color sorter 10 and the No. 2 color sorter 20 through the white tea raw material conveying device, and the three-level four-discharging intelligent sorting of the white tea is performed;

[0045] S2, the sorted discharge from the first discharge port of the No. 1 color sorter 10 and the sorted discharge from the first discharge port of the No. 2 color sorter 20 are combined and transported to the No. 4 color sorter 40 for another three-level four-discharge intelligent sorting of white tea;

[0046] S3, the sorted discharge from the third discharge port of the second color sorter 20 and the sorted discharge from the third discharge port of the first color sorter 10 are combined and transported to the third color sorter 30 for another three-level four-discharge intelligent sorting of white tea;

[0047] S4, the sorted materials discharged through the second discharging ports of the No. 1 color sorter 10, the No. 2 color sorter 20, the No. 3 color sorter 30, and the No. 4 color sorter 40 are returned to re-enter their respective color sorters for re-sorting;

[0048] S5, the materials discharged from the fourth discharge ports of the No. 1 color sorter 10 and the No. 2 color sorter 20 are collected and transported to the recycling and packaging area for recycling;

[0049] S6. The materials are discharged through the first discharge port, the third discharge port and the fourth discharge port of the No. 3 color sorter 30 and the No. 4 color sorter 40, thereby forming a multi-level impurity-removed and graded finished product of white tea.

[0050] The automated production line for removing impurities and grading of white tea and the method for grading white tea of ​​the present invention form two automated white tea sorting production lines by arranging two color sorters and matching conveyors in series, thereby realizing the functions of synchronized automated sorting and grading. Except for loading and unloading, other processes do not require manual operation, thereby greatly improving efficiency and increasing sorting accuracy.

[0051] The automated production line for removing impurities and grading of white tea and the method for grading white tea of ​​the present invention arrange the first production line and the second production line in parallel so that the materials that have undergone one round of color sorting and grading in the two production lines are separately transferred and then concentrated to corresponding color sorters for the second round of color sorting and grading. The No. 3 color sorter can process all the finished products of the third discharge port of the No. 1 color sorter and the No. 2 color sorter, and the No. 4 color sorter can concentrate on processing all the finished products of the first discharge port of the No. 1 color sorter and the No. 2 color sorter, thereby increasing the grading efficiency of the No. 3 color sorter and the No. 4 color sorter.

[0052] According to the automated production line for removing impurities and grading white tea and the method for grading white tea, the materials discharged from the second discharge ports of all color sorters are transported to the loading elevator via a return elevator and directly returned to the original color sorter for re-sorting, and no other procedures are required to collect the materials discharged from the second discharge ports for further processing, thereby improving the overall utilization rate of the tea leaves.

[0053] In the automated production line for removing impurities and grading white tea and the method for grading white tea of ​​the present invention, defective products discharged from the fourth discharge ports of the first color sorter and the second color sorter are transported to a collection area through a transfer conveyor for unified recycling.

[0054] The automated production line for removing impurities and grading of white tea and the method for grading white tea of ​​the present invention are both visually monitored in real time during the transportation of white tea leaves, and visual signals are transmitted to a central control room. Operators can adjust the production speed of each device on the production line at any time according to the material stacking situation to ensure that the production efficiency of the entire production line reaches an optimal state, and all can be remotely controlled in the central control room without the need for personnel to go to the production line for manual operation.

[0055] The above is an exemplary description of the invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. An automated production line for removing impurities and grading white tea, characterized in that: It comprises a first production line and a second production line connected in parallel, wherein the first production line comprises a first color sorter (10) and a third color sorter (30) connected in series, and the second production line comprises a second color sorter (20) and a fourth color sorter (40) connected in series; The first color sorter (10), the second color sorter (20), the third color sorter (30), and the fourth color sorter (40) are all three-layer intelligent color sorters, and are all provided with a first discharge port, a second discharge port, a third discharge port, and a fourth discharge port, the discharge quality of which decreases in sequence; The discharge from the first discharge port of the No. 1 color sorter (10) is combined with the discharge from the first discharge port of the No. 2 color sorter (20) and then transported to the No. 4 color sorter (40); the discharge from the second discharge ports of the No. 1 color sorter (10), the No. 2 color sorter (20), the No. 3 color sorter (30) and the No. 4 color sorter (40) are all returned to re-enter their respective color sorters for re-sorting; the discharge from the third discharge port of the No. 2 color sorter (20) is combined with the discharge from the third discharge port of the No. 1 color sorter (10) and then transported to the No. 3 color sorter (30); the discharge from the fourth discharge port of the No. 1 color sorter (10) and the No. 2 color sorter (20) is combined and then transported to the recycling and packaging area for recycling; the sorting discharge from the first discharge port, the third discharge port and the fourth discharge port of the No. 3 color sorter (30) and the No. 4 color sorter (40) form a multi-level impurity removal and grading of white tea; The first production line further comprises a No. 1 carding machine (101), a No. 1 shaking screen (102), a No. 1 feeding elevator (103), a No. 1 finished product elevator (107), a No. 3 carding machine (301), a No. 3 shaking screen (302), a No. 3 feeding elevator (303), and a No. 3 finished product elevator (305) which are sequentially connected in series, the No. 1 color sorter (10) is arranged in series between the No. 1 feeding elevator (103) and the No. 1 finished product elevator (107), and the No. 3 color sorter (30) is arranged in series between the No. 3 feeding elevator (303) and the No. 3 finished product elevator (305); The second production line further comprises a No. 2 carding machine (201), a No. 2 shaking screen (202), a No. 2 feeding elevator (203), a No. 2 finished product elevator (205), a No. 4 carding machine (401), a fine tea machine (406), a No. 4 shaking screen (402), a No. 4 feeding elevator (403), and a No. 4 finished product elevator (405) which are sequentially connected in series, the No. 2 color sorter (20) is arranged in series between the No. 2 feeding elevator (203) and the No. 2 finished product elevator (205), and the No. 4 color sorter (40) is arranged in series between the No. 4 feeding elevator (403) and the No. 4 finished product elevator (405); The second discharge port of the No. 1 color sorter (10) is connected to a No. 1 return material elevator (104), and the end of the No. 1 return material elevator (104) is arranged above the front end of the No. 1 loading elevator (103); the second discharge port of the No. 2 color sorter (20) is connected to a No. 2 return material elevator (204), and the end of the No. 2 return material elevator (204) is arranged above the front end of the No. 2 loading elevator (203); the second discharge port of the No. 3 color sorter (30) is connected to a No. 3 return material elevator (304), and the end of the No. 3 return material elevator (304) is arranged above the front end of the No. 3 loading elevator (303); the second discharge port of the No. 4 color sorter (40) is connected to a No. 4 return material elevator (404), and the end of the No. 4 return material elevator (404) is arranged above the front end of the No. 4 loading elevator (403).

2. According to claim 1, a white tea impurity removal and grading automated production line is characterized in that: A transfer conveyor 1 (206) is provided at the fourth discharge port of the No. 1 color sorter (10) and the No. 2 color sorter (20), and the color-sorted defective materials from the fourth discharge ports of the No. 1 color sorter (10) and the No. 2 color sorter (20) are automatically transported to the recycling and packaging area through the transfer conveyor 1 (206) for recycling.

3. According to claim 1, a white tea impurity removal and grading automated production line is characterized in that: A transfer conveyor 2 (207) is arranged at the third discharge port of the No. 2 color sorter (20) and the No. 1 color sorter (10), and the end of the transfer conveyor 2 (207) is arranged above the front end of the No. 1 finished product elevator (107), and the No. 3 combing machine (301) is arranged at the rear end of the No. 1 finished product elevator (107).

4. According to claim 1, a white tea impurity removal and grading automated production line is characterized in that: A No. 1 finished product conveyor (105) is arranged at the first discharge port of the No. 1 color sorter (10), a No. 1 finished product conveyor (106) is arranged between the end of the No. 1 finished product conveyor (105) and the No. 2 finished product elevator (205) arranged at the first discharge port of the No. 2 color sorter (20), and the No. 4 combing machine (401) is installed at the rear end of the No. 2 finished product elevator (205).

5. According to claim 4, an automated production line for removing impurities and grading white tea is characterized in that: The No. 3 finished product elevator (305) and the No. 4 finished product elevator (405) are respectively arranged at the first discharge ports of the No. 3 color sorter (30) and the No. 4 color sorter (40).

6. The automated production line for removing impurities and grading white tea according to claim 5, characterized in that: The discharge positions of the No. 1 finished product conveyor 1 (105), the No. 1 finished product conveyor 2 (106), the No. 2 finished product elevator (205), the No. 3 finished product elevator (305), and the No. 4 finished product elevator (405) are all installed with visual sensors to capture the white tea material transportation situation in real time and send visual signals to the control room; the control room receives various information of all equipment of the first production line and the second production line, and sends operation instructions to realize remote control of the production line.

7. The white tea grading method of the white tea impurity removal and grading automated production line according to any one of claims 1 to 6, characterized in that: The steps include: S1, conveying the white tea raw material to the first color sorter (10) and the second color sorter (20) through the white tea raw material conveying device, and performing three-level four-discharging intelligent sorting of the white tea; S2, the sorted discharge from the first discharge port of the No. 1 color sorter (10) and the sorted discharge from the first discharge port of the No. 2 color sorter (20) are combined and transported together to the No. 4 color sorter (40) for another three-level four-discharge intelligent sorting of white tea; S3, the sorted discharge from the third discharge port of the second color sorter (20) and the sorted discharge from the third discharge port of the first color sorter (10) are combined and transported together to the third color sorter (30) for another three-level four-discharge intelligent sorting of white tea; S4, the sorted materials discharged through the second discharge ports of the No. 1 color sorter (10), the No. 2 color sorter (20), the No. 3 color sorter (30), and the No. 4 color sorter (40) are returned to their respective color sorters for re-sorting; S5, the materials discharged from the fourth discharge ports of the first color sorter (10) and the second color sorter (20) are collected and transported to a recycling and packaging area for recycling; S6. The materials are discharged through the first discharge port, the third discharge port and the fourth discharge port of the color sorter No. 3 (30) and the color sorter No. 4 (40), thereby forming a multi-level impurity-removed and graded finished product of white tea.

Images