Machine-picked fresh leaf comprehensive treatment method

Abstract

The invention discloses a comprehensive treatment method for mechanically picked fresh leaves, and belongs to the technical field of tea processing, picking is performed in batches from a tea garden through mechanical equipment, picked materials are a mixture of single-bud, one-bud-one-leaf, one-bud-two-leaf, other fresh leaves, weeds, stones and tea branches, whether coarse screening and spreading are performed or not is selected according to the impurity condition before (or after) fresh leaf treatment, and the tea leaves are selected according to the impurity condition before (or after) fresh leaf treatment. The method comprises the following steps: removing old leaves, yellow leaves, sundries and the like, improving the uniformity and cleanliness, performing shape and color recognition, cutting redundant leaves according to requirements, removing redundant leaf stems of fresh tea leaves, and performing subsequent processing treatment on the cut high-quality fresh tea leaves, so that the picking cost is reduced, and meanwhile, the output benefit and the output quality are improved; the problems that when fresh tea leaves in different shapes are picked, the tenderness degree is inconsistent, and benefits cannot be maximized after impurities are possibly carried in the fresh tea leaves are solved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tea processing, and more particularly relates to a machine-picked fresh leaf comprehensive processing method. BACKGROUND

[0002] The artificially picked tea leaves are relatively uniform, complete and neat, however, the artificial cost is high, the artificial picking cost on the market is 130 yuan / kg; the machine picking speed is fast and the cost is low, the machine picking cost on the market is 0.3 yuan / kg, however, the picked tea leaves are not complete in shape, single bud, one bud and one leaf, one bud and two leaves or other mixed storage, the picked tea leaves are messy, and cannot be processed for maximum benefit. SUMMARY

[0003] The technical problem to be solved by the application is to provide a machine-picked fresh leaf comprehensive processing method, which can meet the demand of reducing cost and processing single bud, one bud and one leaf and one bud and two leaves of tea leaves.

[0004] The machine-picked fresh leaf comprehensive processing method comprises the following steps:

[0005] The machine-picked fresh leaf comprehensive processing method comprises the following steps: Step one: batch picking by mechanical equipment from a tea garden, the picked material is a mixture of single bud, one bud and one leaf, one bud and two leaves, other fresh leaves, weeds, stones and tea branches; Step two: if the non-fresh leaf impurities such as weeds, stones and tea branches are too much, the mixture picked by the machine is placed on a vibrating screen for coarse screening, and the non-fresh leaf impurities such as weeds, stones and tea branches are discharged, and the remaining mixed fresh leaves are left; Step three: uniform and thin spreading of the mixed fresh leaves, so that the mixed fresh leaves will not be stacked with each other, and then the mixed fresh leaves are sequentially put into the multi-path flow channel one by one; Step four: photoelectric online identification of qualified fresh leaves in mixed fresh leaves and cutting of other fresh leaves to be processed, a shape and color recognition machine is arranged above the conveying channel, the shape and color recognition machine comprises a storage and a controller and an execution element, the storage stores templates of single bud, one bud and one leaf, one bud and two leaves and other fresh leaves, the controller identifies the shape of the mixed fresh leaves in the conveying channel by taking the templates in the storage as a standard, screens the mixed fresh leaves by using the execution element according to the pre-set templates, and conveys or cuts the mixed fresh leaves after screening, the high-quality tea fresh leaves that do not need to be processed are directly put into the conveying channel to wait for processing, the other tea fresh leaves are cut to obtain the required high-quality tea fresh leaves and mixed high-quality tea fresh leaves and cut leaf pieces of other types of tea leaves, and the mixed high-quality tea fresh leaves and the cut leaf pieces are put into the flow channel; Step five: the cut mixed high-quality tea fresh leaves and the cut leaf pieces are classified by the winnower, the mixed high-quality tea fresh leaves after the winnowing flow into the multi-path flow channel to wait for processing, and the leaf pieces flow into the non-standard fresh leaf channel to be discarded; Step six: photoelectric online identification of mixed high-quality tea fresh leaves, the mixed fresh leaves are put into the multi-path flow channel, a shape and color recognition machine is arranged above the multi-path flow channel, the high-quality tea fresh leaves are classified according to the categories of single bud, one bud and one leaf, one bud and two leaves and other fresh leaves, the required high-quality tea fresh leaves and other types of tea leaves are selected and classified and put into the multi-path flow channel, the required high-quality tea fresh leaves flow into the conveying channel to wait for processing, and the other types of tea leaves flow out; Step seven: the required high-quality tea fresh leaves are put into the tea production line to be processed; Step eight: the dried tea fresh leaves are processed into high-quality tea fresh leaves and then stored in a warehouse; Steps two and three and / or steps five and six are further provided with step A: the mixed fresh leaves after the coarse screening are subjected to fresh leaf dehydration treatment to evaporate part of the water in the mixed fresh leaves, when the fresh leaf dehydration treatment in step A is only performed after the winnowing in step five, the leaf pieces flowing into the non-standard fresh leaf channel are not subjected to the dehydration treatment, so that the processing amount is reduced, the processing efficiency is improved and the cost is saved; when the fresh leaf dehydration treatment in step A is only performed before the uniform mixing of the fresh leaves in step three, the dehydrated leaves can better contact the working surfaces of the combing device and the cutting device, the dehydrated leaves can be better rearranged and cut, and the cutting displacement is reduced; when the fresh leaf dehydration treatment is performed before the uniform mixing of the fresh leaves and after the winnowing, the fresh leaves are subjected to 30% dehydration treatment in the early stage to facilitate cutting, and the fresh leaves are subjected to 70% dehydration treatment in the later stage to ensure the quality of the tea leaves.

[0006] As a further improvement of the application, the single bud, one bud and one leaf and one bud and two leaf tea fresh leaves after the classification in step six flow into a plurality of parallel conveying belts, the cutting knives are arranged in an interlaced manner to prevent the cutting knives from interfering with the cutting efficiency.

[0007] As a further improvement of the present application, the tea fresh leaves are arranged in a certain direction when they are put into the multi-path flow channel in step four, so that the tea fresh leaves can be easily identified and cut accurately.

[0008] As a further improvement of the present application, the cutting device is selected from a punching cutting device or a laser cutting device, so that the influence of cutting on the quality of the tea fresh leaves is reduced.

[0009] As a further improvement of the present application, when the tea fresh leaves are picked for green tea, the spreading in step three is for spreading green tea, the temperature is 20-25℃, the visiting time is 4-8h, and the withering tea fresh leaves are withered to a water content of 65%-70%, so that the residual water and enzymes in the tea leaves can be oxidized, and the tea leaves are convenient for processing and storage.

[0010] As a further improvement of the present application, when the tea fresh leaves are picked for black tea, the spreading in step three is for withering, the temperature is 30-36℃, the withering time is 0.5-2.5h, and the withered tea fresh leaves are withered to a water content of 25%-40%, so that the tea leaves become soft and elastic, and are prepared for the subsequent processing steps.

[0011] As a further improvement of the present application, the fresh leaf water loss treatment method in step three is changed according to the type of tea, when the tea is green tea, yellow tea or black tea, the tea is spread green; when the tea is black tea, the tea is withered; when the tea is white tea, the tea is spread green or sunned green; and when the tea is green tea, the tea is made green, so as to improve the fresh leaf water loss efficiency.

[0012] As a further improvement of the present application, if the non-fresh-leaf impurities such as grass, stones and tea branches in the tea leaves picked by the machine are too few, step two is skipped.

[0013] Compared with the prior art, the present application has the beneficial effects that: the tea fresh leaves are picked by machine, the picking speed is fast, and the picking cost is low; the tea fresh leaves are scattered into the flow channel, and the combing device is arranged to disorder and reverse the tea fresh leaves, so that the tea fresh leaves are conveniently identified and accurately cut in one direction; the cutting knives are staggered, so as to prevent the cutting knives from interfering with the cutting efficiency; the single bud, one bud and one leaf, and one bud and two leaves of the tea fresh leaves are cut and de-rooted and de-leafed, and are collectively processed and packaged after cutting, so as to increase the output benefit; when the picked tea fresh leaves are green tea, the spreading in step three is spreading green, the temperature is 20-25 DEG C, and the spreading time is 4-8h, so that the residual moisture and enzymes in the tea leaves can be oxidized, and the processing and storage are facilitated; when the picked tea fresh leaves are black tea, the spreading in step three is wilting, the temperature is 30-36 DEG C, and the wilting time is 3.0-10.0h, so that the tea leaves become soft and elastic, and the subsequent processing steps are prepared; after spreading, the moisture content of the tea fresh leaves is reduced to 65%-70%, so as to ensure the freshness of the tea fresh leaves and prevent the final dry tea from being mildewed; the moisture content of the dried tea fresh leaves in step nine is 3%-6%, so that the tea leaves are more easily stored, the picking cost is reduced, the output benefit and product quality are improved, and the problem that the processing of the mixed tea fresh leaves after picking cannot maximize the benefit is solved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The process flow chart of the present application only carries out fresh leaf dehydration treatment before uniform mixing of fresh leaves; Figure 2 The process flow chart of the present application only carries out fresh leaf dehydration treatment after winnowing; Figure 3 The process flow chart of the present application carries out fresh leaf dehydration treatment before uniform mixing of fresh leaves and after winnowing; Figure 4 The upper view of the mixed fresh leaf shearing treatment structure of the present application.

[0015] Explanation of reference numerals in the drawing: Conveyer belt 1; combing device 2; photoelectric sorting machine 3; cutting knife 4; processing channel 5; non-standard fresh leaf channel 6. DETAILED DESCRIPTION

[0016] Specific embodiment one: as shown in Figure 1 and Figure 4 The present application relates to a kind of machine-picked fresh leaf comprehensive processing method, comprising the following steps: Step one: using ordinary reciprocating tea picker to pick from tea garden, pick the mixture of single bud, one bud and one leaf, one bud and two leaves, other fresh leaves, weeds, stones and tea branches, 20kg; Step two: if there are too many non-leaf impurities such as weeds, stones and tea branches, the mixture containing green tea fresh leaves picked by the machine is placed on a vibrating screen for coarse screening to remove weeds, stones, tea branches and other non-leaf impurities, and the screened green tea mixture fresh leaves are output, with a total weight of 13.8 kg; Step three: the picked green tea mixture fresh leaves are spread out for airing, and the moisture in the mixture is partially evaporated, and the airing parameters are adjusted in a timely manner according to changes in environmental factors such as air humidity, so that the green tea mixture fresh leaves are aired on a ventilated airing rack at 20-30℃ for 2.0-10.0h, with an airing thickness of 3.0-20.0cm, and the moisture content of the green tea mixture fresh leaves after airing is maintained at 60-70%; Step four: the green tea mixture fresh leaves are evenly placed so that there is no stacking, and then are sequentially and individually fed into the multi-path flow channel, and the green tea mixture fresh leaves are rearranged by the combing device so that they all move in the same direction; Step five: the evenly placed mixture fresh leaves are fed into the conveying channel, and the mixture fresh leaves pass through the shape and color discrimination machine, which cuts the mixture fresh leaves according to a pre-set single bud template to obtain the required single bud high-quality tea fresh leaves and cut leaf pieces, and the single bud high-quality tea fresh leaves and the cut leaf pieces are fed into the flow channel; Step six: the cut green tea single bud high-quality tea fresh leaves and the cut leaf pieces are fed into the winnower for separate selection and classification, and the processed green tea single bud high-quality tea fresh leaves flow into the processing channel for processing, and the cut leaf pieces flow into the non-standard fresh leaf channel for waste removal; Step seven: the green tea single bud high-quality tea fresh leaves are fed into the roller de-enzyming machine for de-enzyming at a temperature of 180-330℃ for 2.5min; Step eight: the de-enzymed green tea single bud high-quality tea fresh leaves are rolled for 20min; Step nine: the green tea single bud high-quality tea fresh leaves are placed on a vibrating screen with an amplitude of 2mm and a frequency of 24Hz for blowing, with a blowing time of 45min to blow off the fine broken ends, tea shells and impurities on the surface of the tea leaves; Step ten: the blown green tea single bud high-quality tea fresh leaves are dried to a moisture content of 3%-6%, and then are bagged and sealed.

[0017] Specific embodiment two: as shown in Figure 1 and Figure 4 The present application relates to a machine-picked fresh leaf comprehensive processing method, which comprises the following steps: Step one: a mixture of 20kg of single bud, one bud one leaf, one bud two leaves, other fresh leaves, weeds, stones and tea branches is picked from a tea garden using a common reciprocating tea picker; Step two: if there are too many non-leaf impurities such as weeds, stones and tea branches, the mechanically picked green tea fresh leaves are placed on a vibrating screen for coarse screening to remove weeds, stones, tea branches and other non-leaf impurities, and the screened green tea fresh leaves are output, with a total weight of 18 kg; Step three: the picked green tea fresh leaves are spread out for yellowing, and the moisture in the mixed fresh leaves is partially evaporated, and the yellowing parameters are adjusted in a timely manner according to changes in environmental factors such as air humidity, so that the green tea mixed fresh leaves are spread out on a ventilated spreading rack at 20-30℃ for 2-10h, and the spreading thickness is 3-20cm, and the green tea mixed fresh leaves obtained after spreading have a moisture content of 60-70%; Step four: the green tea mixed fresh leaves are evenly placed so that the green tea mixed fresh leaves are not stacked, and then are sequentially and individually fed into the multi-path flow channel, and the green tea mixed fresh leaves are randomly arranged by the combing device, so that the green tea mixed fresh leaves are all directed in one direction; Step five: the evenly placed mixed fresh leaves are fed into the conveying channel, and the mixed fresh leaves pass through the shape and color discrimination machine, and the mixed fresh leaves are cut according to a pre-set one-bud-one-leaf template to obtain the required one-bud-one-leaf fine tea fresh leaves and single-bud fine tea fresh leaves, and the mixed fine tea fresh leaves and the cut leaf pieces are fed into the flow channel; Step six: the cut green tea one-bud-one-leaf fine tea fresh leaves and the cut leaf pieces are fed into the winnower for separate selection and classification, and the processed green tea one-bud-one-leaf fine tea fresh leaves flow into the processing channel for processing, and the cut leaf pieces flow into the non-standard fresh leaf channel for waste removal; Step seven: the mixed fine tea fresh leaves are identified online by photoelectricity, and the mixed fresh leaves are fed into the multi-path flow channel, and the single buds and one-bud-one-leaf in the mixed fine tea fresh leaves are classified and fed into the multi-path flow channel, and the required one-bud-one-leaf fine tea fresh leaves flow into the conveying channel for processing, and the single-bud fine tea fresh leaves flow out; Step eight: the green tea one-bud-one-leaf fine tea fresh leaves are fed into a roller de-enzyming machine for de-enzyming, with a de-enzyming temperature of 180-330℃ and a de-enzyming time of 2min; Step nine: the de-enzymed green tea one-bud-one-leaf fine tea fresh leaves are rolled for 30min; Step ten: the green tea one-bud-one-leaf fine tea fresh leaves are placed on a vibrating screen with an amplitude of 2mm and a frequency of 24Hz for blowing, with a blowing time of 45min to blow off the fine small pieces, tea shells and impurities on the surface of the tea leaves; Step eleven: the blown green tea one-bud-one-leaf fine tea fresh leaves are dried to a tea fresh leaf moisture content of 3%-6%, and then are bagged and packaged.

[0018] Specific embodiment three: as shown in Figure 1 and Figure 4 The present application relates to a kind of machine-picked fresh leaf comprehensive processing method, comprising the following steps: Step one: using a common reciprocating tea picker to pick from the tea garden, picking a mixture of 15 kg of single bud, one bud and one leaf, one bud and two leaves, other fresh leaves, weeds, stones and tea branches; Step two: if there are too many non-fresh leaf impurities such as weeds, stones, tea branches, etc., the machine-picked black tea fresh leaves are placed on a vibrating screen for coarse screening to remove weeds, stones, tea branches and other non-fresh leaf impurities, and the screened mixed black tea fresh leaves are output, a total of 14 kg; Step three: wilt the picked black tea mixed fresh leaves, allowing part of the moisture in the mixed fresh leaves to evaporate, and adjust the wilting parameters in a timely manner according to changes in environmental factors such as air humidity, so that the black tea mixed fresh leaves are wilted on a ventilated wilting frame at 45°C for 3.0-10.0h, with a wilting thickness of 2-15cm, and the moisture content of the black tea fresh leaves after spreading is maintained at 25-40%; Step four: evenly place the black tea mixed fresh leaves so that the black tea mixed fresh leaves are not stacked, then sequentially and individually feed them into the multi-path flow channel, and use the carding device to rearrange the black tea mixed fresh leaves so that they all move in the same direction; Step five: feed the evenly placed mixed fresh leaves into the conveying channel, and use the shape and color discrimination machine to cut the mixed fresh leaves according to the pre-set single bud template to obtain the desired single bud premium tea fresh leaves and cut leaf pieces, and feed the single bud premium tea fresh leaves and the cut leaf pieces into the flow channel; Step six: feed the cut black tea single bud premium tea fresh leaves and the cut leaf pieces into the winnower for separate selection and classification, and make the processed black tea single bud premium tea fresh leaves flow into the processing channel for processing, and make the cut leaf pieces flow into the non-standard fresh leaf channel for waste removal; Step seven: feed the black tea premium tea fresh leaves into the drum deoxidizer for deoxidization at a temperature of 180-330°C for 2min; Step eight: roll and twist the deoxidized black tea single bud premium tea fresh leaves for 30min; Step nine: place the black tea single bud premium tea fresh leaves on a vibrating screen with an amplitude of 2mm and a frequency of 24Hz for blowing, with a blowing time of 45min to blow off the fine powder, tea shells and impurities on the surface of the tea leaves; Step ten: dry the blown black tea single bud premium tea fresh leaves to a moisture content of 3%-6%, then bag and seal them.

[0019] Specific embodiment four: as shown in Figure 2 and Figure 4 The present application relates to a machine-picked fresh leaf comprehensive processing method, comprising the following steps: Step one: using a common reciprocating tea picker to pick from the tea garden, picking a mixture of 20 kg of single bud, one bud and one leaf, one bud and two leaves, other fresh leaves, weeds, stones and tea branches; Step 2: If there are too many non-fresh leaf impurities such as weeds, stones, and tea branches, place the mechanically harvested fresh black tea leaves on a vibrating screen for coarse screening to remove weeds, stones, tea branches, and other non-fresh leaf impurities. After screening, a total of 17.2 kg of mixed fresh black tea leaves will be output. Step 3: Arrange the mixed fresh tea leaves evenly so that they do not pile up. Then, put them into the multi-flow channel one by one and use the sorting device to straighten the mixed fresh tea leaves so that they all face the same direction. Step 4: The uniformly mixed fresh leaves are put into the conveyor channel. The mixed fresh leaves are cut according to the pre-set single bud template by the shape and color identification machine to obtain the required single bud premium tea fresh leaves and the cut broken leaves. The single bud premium tea fresh leaves and broken leaves are put into the flow channel. Step 5: The cut single bud premium tea leaves and the cut broken leaves are put into the air separator for sorting and classification. The processed single bud premium tea leaves flow into the processing channel for processing, while the cut broken leaves flow into the non-standard fresh leaf channel for waste discharge. Step Six: Wither the fresh single-bud premium black tea leaves after picking to allow some of the moisture in the leaves to evaporate. Adjust the withering parameters in a timely manner according to changes in environmental factors such as air humidity. Wither the mixed fresh black tea leaves on a ventilated withering rack at 45℃ for 3.0-10.0 hours, with a withering thickness of 2-15cm. After spreading, the moisture content of the fresh black tea leaves should be maintained at 25-40%. Step 7: Put the fresh tea leaves of the single bud of black tea into the drum fixation machine for fixation. The fixation temperature is 180-330℃ and the fixation time is 2 minutes. Step 8: Knead the fresh tea leaves of the single buds after fixation for 30 minutes; Step 9: Place the fresh tea leaves of premium single bud black tea on a vibrating screen with an amplitude of 2mm and a frequency of 24Hz for blowing for 45 minutes to remove fine dust, tea leaves and impurities from the surface of the tea leaves. Step 10: After drying the fresh tea leaves of premium single buds in the air until the moisture content of the fresh tea leaves is 3%-6%, pack them into bags and seal them.

[0020] Specific Implementation Example 5: As shown in the example Figures 3-4 As shown, this invention relates to a comprehensive processing method for machine-harvested fresh leaves, comprising the following steps: Step 1: Use a regular reciprocating tea picking machine to pick tea leaves from the tea garden, picking a mixture of single buds, one bud and one leaf, one bud and two leaves, other fresh leaves, weeds, stones and tea branches, totaling 18 kg; Step 2: If there are too many non-fresh tea leaves such as weeds, stones, and tea branches, place the mechanically picked green tea leaves on a vibrating screen for coarse screening to remove weeds, stones, tea branches, and other non-fresh tea leaves. After screening, a total of 16.7 kg of green tea leaves will be output. Step three: spread the picked green tea fresh leaves, evaporate the moisture in the mixed fresh leaves, and adjust the spreading parameters in time according to the changes of environmental factors such as air humidity, so that the green tea mixed fresh leaves are spread on the ventilated spreading frame at 20-30℃ for 2-10h, the spreading thickness is 3-20cm, and the water content of the green tea mixed fresh leaves obtained after spreading is maintained at 60-70%; Step four: evenly place the green tea mixed fresh leaves so that the green tea mixed fresh leaves are not stacked, then sequentially put them into the multi-path flow channel, and use the carding device to randomly arrange the green tea mixed fresh leaves so that the green tea mixed fresh leaves are all directed in one direction; Step five: put the evenly placed mixed fresh leaves into the conveying channel, pass the mixed fresh leaves through the shape and color discrimination machine, cut the mixed fresh leaves according to the pre-set one bud one leaf template, obtain the mixed fine tea fresh leaves of one bud one leaf and single bud fine tea fresh leaves and the cut leaf pieces, and put the mixed fine tea fresh leaves and the leaf pieces into the flow channel; Step six: spread the picked green tea fresh leaves, evaporate the moisture in the mixed fine tea fresh leaves, and adjust the spreading parameters in time according to the changes of environmental factors such as air humidity, so that the green tea mixed fine tea fresh leaves are spread on the ventilated spreading frame at 20-30℃ for 2-10h, the spreading thickness is 3-20cm, and the water content of the green tea mixed fine tea fresh leaves obtained after spreading is maintained at 30-40%; Step seven: put the cut mixed fine tea fresh leaves and the cut leaf pieces into the winnower for classification, and make the processed mixed fine tea fresh leaves flow into the processing channel for processing, and make the cut leaf pieces flow into the non-standard fresh leaf channel for waste disposal; Step eight: online photoelectric identification of mixed fine tea fresh leaves, put the mixed fresh leaves into the multi-path flow channel, grade and put the single bud and one bud one leaf in the mixed fine tea fresh leaves into the multi-path flow channel, make the required one bud one leaf fine tea fresh leaves flow into the conveying channel for processing, and make the single bud fine tea fresh leaves flow out; Step nine: put the green tea one bud one leaf fine tea fresh leaves into the roller de-enzyming machine for de-enzyming, the de-enzyming temperature is 180-330℃, and the de-enzyming time is 2min; Step ten: roll the de-enzymed green tea one bud one leaf fine tea fresh leaves for 30min; Step eleven: blow the green tea one bud one leaf fine tea fresh leaves on the vibration screen with an amplitude of 2mm and a frequency of 24Hz, the blowing time is 45min, and the fine powder, tea shell and impurities on the surface of the tea leaves are blown off; Step twelve: dry the blown green tea one bud one leaf fine tea fresh leaves to a tea fresh leaf moisture content of 3%-6%, then bag and package.

Claims

1. A method for the integrated processing of machine-harvested leaf, characterized in that: The method comprises the following steps: Step 1: batch picking from tea garden by mechanical equipment, the picked material being a mixture of single bud, one bud one leaf, one bud two leaves, other fresh leaves, weeds, stones and tea branches; Step 2: if the non-fresh leaf impurities such as weeds, stones and tea branches are too much, the mixture picked by the mechanical equipment is placed on a vibrating screen for coarse screening to remove the non-fresh leaf impurities and leave the mixed fresh leaves; Step 3: the mixed fresh leaves are evenly spread out so that they do not stack on each other, and then the mixed fresh leaves are sequentially fed into a multi-path flow channel; Step 4: photoelectric online identification and cutting of the mixed fresh leaves, a shape and color discrimination machine being arranged above the conveying channel, the shape and color discrimination machine comprising a storage and a controller and an execution element, the storage storing templates of single bud, one bud one leaf, one bud two leaves and other fresh leaves, the controller identifying the shape of the mixed fresh leaves in the conveying channel by taking the templates in the storage as a standard, and the execution element cutting the mixed fresh leaves according to the pre-set templates to cut off the excess leaf blades of other fresh leaves compared with the required fresh leaves, so as to obtain the required high-quality fresh leaves, mixed high-quality fresh leaves of other types of tea leaves and cut leaf pieces, and the mixed high-quality fresh leaves and the cut leaf pieces being fed into the flow channel; Step 5: selection and classification of the cut mixed high-quality fresh leaves and the cut leaf pieces by the shape and color discrimination machine or a winnower, the mixed high-quality fresh leaves after winnowing flowing into the multi-path flow channel for processing, and the leaf pieces flowing into a non-standard fresh leaf channel for waste removal; Step 6: photoelectric online identification of the mixed high-quality fresh leaves, the mixed fresh leaves being fed into the multi-path flow channel, a shape and color discrimination machine being arranged above the multi-path flow channel, the high-quality fresh leaves being selected and classified according to the categories of single bud, one bud one leaf, one bud two leaves and other fresh leaves, and the required high-quality fresh leaves and other types of tea leaves being fed into the multi-path flow channel, the required high-quality fresh leaves flowing into the conveying channel for processing, and the other types of tea leaves flowing out; Step 7: feeding the required high-quality fresh leaves into a tea production line for processing; Step 8: drying the fresh leaves to process high-quality fresh leaves and then storing the high-quality fresh leaves in a warehouse; Step A: fresh leaf water loss treatment of the mixed fresh leaves after coarse screening to evaporate part of the water in the mixed fresh leaves, which is arranged between steps 2 and 3 and / or between steps 5 and 6.

2. The method according to claim 1, wherein: The classified single bud, one bud one leaf or one bud two leaf fresh leaves in step 6 flow onto several parallel conveying belts, and the cutting knives are arranged in a staggered manner.

3. The method according to claim 1, wherein: The cutting device in step 6 is selected from a punching device and a laser cutting device.

4. The method of claim 1, wherein: A carding device is arranged above the multi-path flow channel when the mixed fresh leaves are fed into the multi-path flow channel.

5. The method of claim 1, wherein the method further comprises: When the picked fresh leaves are green tea, the spreading in step 3 is spreading green, the temperature is 20-25℃, and the spreading time is 4-8h, so as to wilt the fresh leaves to a water content of 65%-70%.

6. The method of claim 1, wherein: When the picked fresh leaves are black tea, the spreading in step 3 is wilting, the temperature is 30-36℃, and the wilting time is 3.0-10.0h, so as to wilt the fresh leaves to a water content of 25%-40%.

7. The method of claim 1, wherein the method further comprises: The fresh leaf dehydration treatment method in step three varies with the type of tea, and when the treated tea is green tea, yellow tea or black tea, spreading is adopted; when the treated tea is red tea, withering is adopted; when the treated tea is white tea, cooling or sunning is adopted; and when the treated tea is green tea, making green is adopted. ​ 8. The method of claim 1, wherein: If the non-fresh-leaf impurities such as weeds, stones and tea branches in the tea leaves picked by machines are too few, step two is skipped.

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