CN111299117A - Grading screening method for fresh tea leaves - Google Patents

Grading screening method for fresh tea leaves Download PDF

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Publication number
CN111299117A
CN111299117A CN202010336475.3A CN202010336475A CN111299117A CN 111299117 A CN111299117 A CN 111299117A CN 202010336475 A CN202010336475 A CN 202010336475A CN 111299117 A CN111299117 A CN 111299117A
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CN
China
Prior art keywords
screening
tea
tea leaves
fresh tea
bright leaf
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010336475.3A
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Chinese (zh)
Inventor
王信刚
张晶磊
吕洪亮
吕建文
徐新建
宋卫宇
骆寿英
张紫玥
田梦媛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anshun Jingying Science and Technology Research and Development Co Ltd
Original Assignee
Anshun Jingying Science and Technology Research and Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anshun Jingying Science and Technology Research and Development Co Ltd filed Critical Anshun Jingying Science and Technology Research and Development Co Ltd
Priority to CN202010336475.3A priority Critical patent/CN111299117A/en
Publication of CN111299117A publication Critical patent/CN111299117A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/12Apparatus having only parallel elements
    • B07B1/14Roller screens
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23FCOFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
    • A23F3/00Tea; Tea substitutes; Preparations thereof
    • A23F3/06Treating tea before extraction; Preparations produced thereby
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • B07B1/4663Multi-layer screening surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B9/00Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets

Abstract

The invention discloses a grading screening method of fresh tea leaves, which mainly comprises the following steps: (1) picking fresh tea leaves, putting the picked fresh tea leaves into a hopper, conveying the fresh tea leaves to a primary screening device through a conveying belt for primary screening, and feeding the primarily screened fresh tea leaves into a material collecting groove; (2) the fresh tea leaves in the collecting trough are conveyed to the second-stage screening device through the elevator to be screened secondarily, the second-stage screening device is provided with a grading collecting trough and screening holes, the physical characteristics of the fresh tea leaves are utilized, the fresh tea leaves with different sizes are screened through the screening holes with different sizes, and through second-stage screening treatment, the fresh tea leaves after grading screening enter the corresponding grading collecting trough, so that grading screening and collection of the fresh tea leaves with different sizes are realized. The grading screening method has the advantages of thorough sorting, high sorting efficiency, realization of automatic operation, strong practicability and accordance with the current social development trend.

Description

Grading screening method for fresh tea leaves
Technical Field
The invention relates to the technical field of grading and selecting fresh tea leaves of tea trees, in particular to a grading and screening method of fresh tea leaves.
Background
Tea refers to the leaves and buds of tea trees; broadly refers to the leaves of the evergreen bush tea tree which may be used for tea making, and to beverages infused with these leaves. In recent years, mechanized picking in tea gardens becomes a decisive factor for large-scale production of tea. The machine is adopted and has greatly improved the picking efficiency of the fresh leaf of tea tree, has reduced labour cost, and the scale of tea industry has been promoted in the processing mechanization of tealeaves simultaneously, but, the fresh leaf of tea tree that the machinery was picked is big or small different, is unfavorable for the processing production of the fresh leaf of tea tree, must select separately, grade the fresh leaf of tea tree that the machinery was picked. Therefore, in the tea production and processing process, screening is an essential one-step process, and due to the fact that the tea is different in size, the tea can be broken in the picking process, and a lot of sundries such as grass leaves and branches can be mixed in the tea. Therefore, the screening of the tea can improve the safety quality of the tea.
At present, the fresh tea leaf grading technology mainly comprises three methods: fresh leaf air separator classification, roller screen classifier classification and vibrating screen classification. The classification method of the fresh tea leaves by the air separator is to carry out the separation and classification of the fresh tea leaves by utilizing the principle that the fresh tea leaves have different blowing distances due to the influence of wind force because of different sizes and weights. However, because the fresh tea leaves are overlapped and shielded when being blown out, the grading effect of a single fresh leaf winnowing machine is not good enough, and the efficiency is not high; the method of grading by using a single roller screen classifier cannot separate standard bud leaves from small bud heads, single leaves and broken bud leaves, and the grading effect is not ideal; the reciprocating sieve classification method is directly emptys tealeaves on the screen cloth, tealeaves vibrations are screened on the screen cloth under the online vibrator effect of screen cloth, current vibration screening machine passes through vibrating motor and drives the vibration of sieve case, thereby the screening of tealeaves with higher speed, but when using the screening of tealeaves screening machine, tealeaves often can be because of the vibration colludes on the mesh, and current sieve case screen cloth is difficult to dismantle again, and general sieve all is the layering installation, these pieces remain and clear up very difficultly on the mesh, lead to the filter screen to block up easily and produce the influence to follow-up screening. Meanwhile, in the process of classifying the fresh leaves of the mechanically-picked tea trees by using a vibrating screen classification method, the rolling friction between the fresh leaves and a screen surface is large, certain damage can be brought to the fresh leaves, the phenomenon of net hanging of the bud leaves is obvious, and the classification efficiency is reduced.
Because the efficiency and the quality of tea screening can finally influence the quality of finished tea products and the enterprise benefit, in order to improve the screening efficiency and the screening quality, the existing screening mode needs to be improved, and the grading screening can be carried out according to different grade requirements of tea.
Disclosure of Invention
The invention aims to solve the technical problem in the background technology and provides a screening method, which can be used for grading and sorting tea leaves with different qualities or geometric shapes according to different grade requirements of the tea leaves, can reduce sorting errors, has thorough sorting and high sorting efficiency, and can also realize automatic operation, in particular to a grading and screening method for fresh tea leaves.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a method for grading and screening fresh tea leaves mainly comprises the following steps:
(1) picking fresh tea leaves, putting the picked fresh tea leaves into a hopper, conveying the fresh tea leaves into a primary screening device through a conveying belt for primary screening, arranging a coarse material collecting tank in the primary screening device, collecting impurities screened out through the primary screening, screening out part of oversized old branches in the fresh tea leaves through the primary screening device, and allowing the large and small bud heads, single leaves and broken bud leaves subjected to the primary screening to enter a coarse material collecting tank;
(2) carry out the secondary screening through the lifting machine conveying to the second grade sieving mechanism with the bright leaf of tea in the groove that will gather, be equipped with in the second grade sieving mechanism and be used for collecting the hierarchical silo of receiving of the bright leaf of tea that the secondary screening was sieved and supply a plurality of screening holes that the bright leaf of tea passed through, utilize the physical characteristics that the appearance size is different of the bright leaf of tea self, the bright leaf of tea of different overall dimension passes through not unidimensional screening hole, through the second grade screening processing, the bright leaf of tea after the hierarchical screening enters into corresponding hierarchical silo of receiving, thereby realize the hierarchical screening and the collection to the bright leaf of tea of different overall dimensions.
Further, the grading screening method of fresh tea leaves comprises the steps that the secondary screening device comprises a rack and screening mechanisms arranged in the rack, multiple layers of screening mechanisms are arranged in the rack from top to bottom, collecting tanks are further arranged in the rack and located below the screening mechanisms at the lowest layer, the quantity of grading receiving tanks corresponds to the quantity of the screening mechanisms, and the grading receiving tanks are arranged at the output ends of the screening mechanisms; the pore sizes of the screening holes in the screening mechanism are sequentially arranged from top to bottom according to the sequence of gradually decreasing from large to small; the screening mechanism comprises a conveying channel and a driving device for driving the conveying channel to move in the rack, wherein a plurality of screening holes distributed in a matrix form are formed in the conveying channel.
Further, the grading screening method of the fresh tea leaves is characterized in that the screening mechanism is provided with three layers which are divided into an upper layer, a middle layer and a lower layer, a conveying channel in each layer of screening mechanism consists of a plurality of rollers and a plurality of annular lines, the rollers are uniformly arranged in the rack at equal intervals along the longitudinal direction of the rack, the annular lines are uniformly arranged in the rollers at equal intervals along the longitudinal direction of the rack, the rollers and the annular lines are mutually arranged in a vertical state to form screening holes, the annular lines in the conveying channel can do zigzag circular motion in the rack under the action of the driving device, and the rollers can rotate in the rack under the action of the annular lines.
Further, the grading screening method of fresh tea leaves comprises the steps that the driving device comprises a main transmission shaft, two driven transmission shafts, a conveying belt and a motor, the main transmission shaft and the driven transmission shafts are connected through the conveying belt, the main transmission shaft and the driven transmission shafts are arranged in the rack along the longitudinal direction of the rack, the number of the driven transmission shafts is two, the two driven transmission shafts are arranged at the front end and the rear end of the rack, the main transmission shaft is arranged between the two driven transmission shafts and located in the middle of the rack, and the main transmission shaft, the driven transmission shafts and the conveying belt are located at the same horizontal position; the motor is arranged on the side surface of the rack, the main transmission shaft is connected with an output shaft of the motor, power is provided through the motor, and the main transmission shaft drives the driven transmission shaft through a belt; the annular line is connected with the driven transmission shaft through the roller, and the roller is driven by the annular line to synchronously rotate in the rack under the action of the driven transmission shaft; get into the bright leaf of tea among the transfer passage along with transfer passage synchronous motion in-process, through the screening hole that forms between annular line and the cylinder, utilize the physical characteristics that the appearance of the bright leaf of tea self is not of uniform size, under the action of gravity of tealeaves self, the bright leaf of tea of appearance size difference passes through the screening hole in different apertures between the upper and lower floor, get into corresponding hierarchical receipts silo and collect, and the bright leaf of tea through in the lower floor screening mechanism passes through the collecting vat and concentrates the collection, thereby realize the hierarchical screening and the collection to the bright leaf of tea of different overall dimensions.
Furthermore, the grading screening method of the fresh tea leaves is characterized in that the screening holes are of a rectangular structure, the screening holes are uniformly distributed in the secondary screening device in a matrix form, the geometric overall dimension of the fresh tea leaves is divided into A, B, C, D grades from large to small, the pore sizes of the screening holes are sequentially provided with three specifications in a sequence of gradually reducing from top to bottom, the fresh tea leaves collected by the upper screening mechanism are of A grade, the fresh tea leaves collected by the middle screening mechanism are of B grade, the fresh tea leaves collected by the lower screening mechanism are of C grade, and the fresh tea leaves entering the collecting tank through the screening holes in the lower screening mechanism are of D grade.
Compared with the prior art, the grading screening method for fresh tea leaves has the beneficial effects that: owing to be equipped with multilayer screening mechanism in second grade sieving mechanism, screening mechanism is including transfer passage with be used for the drive arrangement that transfer passage removed in the frame, and be formed with the screening hole that a plurality of is the matrix and distributes among the transfer passage, the screening hole comprises cylinder and ring line, through the screening hole, at cylinder and ring line synchronous motion in-process, utilize the physical characteristics that the appearance of fresh tea leaf self differs in size, under the action of gravity of tealeaves self, conveniently carry out hierarchical screening to fresh tea leaf, can greatly reduce the sorting error, have and select separately thoroughly, sorting efficiency is high, can also realize the automation mechanized operation, and its practicality is strong, accords with the trend of current social development.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic process flow diagram of the present invention;
fig. 2 is a schematic structural view of the transfer passage in the present invention.
Shown in the figure: 1-hopper, 2-conveyer belt, 3-first grade sieving mechanism, 4-collecting trough, 5-elevator, 6-second grade sieving mechanism, 61-roller, 62-annular line.
Detailed Description
To further illustrate the concepts of the present invention, embodiments of the present invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 and fig. 2, the method for classifying fresh tea leaves mainly comprises the following steps:
(1) picking fresh tea leaves, putting the picked fresh tea leaves into a hopper, conveying the fresh tea leaves into a primary screening device through a conveying belt for primary screening, arranging a coarse material collecting tank in the primary screening device, collecting impurities screened out through the primary screening, screening out part of oversized old branches in the fresh tea leaves through the primary screening device, and allowing the large and small bud heads, single leaves and broken bud leaves subjected to the primary screening to enter a coarse material collecting tank;
(2) carry out the secondary screening through the lifting machine conveying to the second grade sieving mechanism with the bright leaf of tea in the groove that will gather, be equipped with in the second grade sieving mechanism and be used for collecting the hierarchical silo of receiving of the bright leaf of tea that the secondary screening was sieved and supply a plurality of screening holes that the bright leaf of tea passed through, utilize the physical characteristics that the appearance size is different of the bright leaf of tea self, the bright leaf of tea of different overall dimension passes through not unidimensional screening hole, through the second grade screening processing, the bright leaf of tea after the hierarchical screening enters into corresponding hierarchical silo of receiving, thereby realize the hierarchical screening and the collection to the bright leaf of tea of different overall dimensions.
Further, the grading screening method of fresh tea leaves is characterized in that the secondary screening device 6 comprises a rack and screening mechanisms arranged in the rack, multiple layers of screening mechanisms are arranged in the rack from top to bottom, collecting tanks are further arranged in the rack, the collecting tanks are located below the screening mechanisms at the lowest layer, the quantity of grading receiving tanks corresponds to the quantity of the screening mechanisms, and the grading receiving tanks are arranged at the output ends of the screening mechanisms; the pore sizes of the screening holes in the screening mechanism are sequentially arranged from top to bottom according to the sequence of gradually decreasing from large to small; the screening mechanism comprises a conveying channel and a driving device for driving the conveying channel to move in the rack, wherein a plurality of screening holes distributed in a matrix form are formed in the conveying channel.
Further, the grading screening method of fresh tea leaves is characterized in that the screening mechanism is provided with three layers which are divided into an upper layer, a middle layer and a lower layer, a conveying channel in each layer of screening mechanism consists of a plurality of rollers 61 and a plurality of annular wires 62, the rollers 61 are uniformly arranged in the rack at equal intervals along the longitudinal direction of the rack, the annular wires 62 are uniformly arranged in the rollers 61 at equal intervals along the longitudinal direction of the rack, the rollers 61 and the annular wires 62 are mutually arranged in a vertical state to form screening holes, the annular wires 62 in the conveying channel can do zigzag circulation motion in the rack under the action of a driving device, and the rollers 61 can rotate in the rack under the action of the annular wires 62.
Further, the grading screening method of fresh tea leaves comprises the steps that the driving device comprises a main transmission shaft, two driven transmission shafts, a conveying belt and a motor, the main transmission shaft and the driven transmission shafts are connected through the conveying belt, the main transmission shaft and the driven transmission shafts are arranged in the rack along the longitudinal direction of the rack, the number of the driven transmission shafts is two, the two driven transmission shafts are arranged at the front end and the rear end of the rack, the main transmission shaft is arranged between the two driven transmission shafts and located in the middle of the rack, and the main transmission shaft, the driven transmission shafts and the conveying belt are located at the same horizontal position; the motor is arranged on the side surface of the rack, the main transmission shaft is connected with an output shaft of the motor, power is provided through the motor, and the main transmission shaft drives the driven transmission shaft through a belt; the annular line 62 is connected with a driven transmission shaft through the roller 61, and the roller 61 is driven by the annular line 62 to synchronously rotate in the rack under the action of the driven transmission shaft; the fresh tea leaves entering the conveying channel move synchronously along with the conveying channel, and pass through the screening holes formed between the annular line 62 and the roller 61, utilize the physical characteristics of the fresh tea leaves themselves with different sizes, under the action of gravity of the tea leaves themselves, the fresh tea leaves with different sizes pass through the screening holes with different apertures between the upper layer and the lower layer, enter the corresponding grading material receiving groove for collection, and the fresh tea leaves passing through the lowest-layer screening mechanism are collected in a concentrated manner through the collecting groove, so that the grading screening and collection of the fresh tea leaves with different sizes are realized.
Furthermore, the grading screening method of the fresh tea leaves is characterized in that the screening holes are of a rectangular structure, the screening holes are uniformly distributed in the secondary screening device in a matrix form, the geometric overall dimension of the fresh tea leaves is divided into A, B, C, D grades from large to small, the pore sizes of the screening holes are sequentially provided with three specifications in a sequence of gradually reducing from top to bottom, the fresh tea leaves collected by the upper screening mechanism are of A grade, the fresh tea leaves collected by the middle screening mechanism are of B grade, the fresh tea leaves collected by the lower screening mechanism are of C grade, and the fresh tea leaves entering the collecting tank through the screening holes in the lower screening mechanism are of D grade.
The classification screening method of the fresh tea leaves adopts the classification screening principle that: owing to be equipped with multilayer screening mechanism in second grade sieving mechanism, screening mechanism is including transfer passage and being used for the drive transfer passage removes's drive arrangement in the frame, and be formed with a plurality of in the transfer passage and be the screening hole that the matrix distributes, the screening hole comprises cylinder 61 and ring line 62. Can set up the size of a dimension of corresponding screening hole in every layer of screening mechanism in advance according to the different grade requirements of tealeaves, at cylinder 61 and 62 synchronous motion in-process of ring line, utilize the physical characteristics that the appearance of the fresh tea self is not of uniform size, under the action of gravity of tealeaves self, conveniently carry out the screening in grades to the fresh tea, can greatly reduce the sorting error. In the classifying and screening method according to the present invention, the hopper 1, the conveyor 2, the primary screening device 3, the collecting chute 4, and the elevator 5 are all common devices in the prior art, and they are not described in detail herein as long as they can satisfy the use requirements.
In conclusion, the grading and screening method has the advantages of thorough sorting, high sorting efficiency, capability of realizing automatic operation, strong practicability and accordance with the current social technology development trend.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art, and any modifications, equivalents, improvements, etc. made by using the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A method for grading and screening fresh tea leaves is characterized in that: the grading screening method mainly comprises the following steps:
(1) picking fresh tea leaves, putting the picked fresh tea leaves into a hopper, conveying the fresh tea leaves into a primary screening device through a conveying belt for primary screening, arranging a coarse material collecting tank in the primary screening device, collecting impurities screened out through the primary screening, screening out part of oversized old branches in the fresh tea leaves through the primary screening device, and allowing the large and small bud heads, single leaves and broken bud leaves subjected to the primary screening to enter a coarse material collecting tank;
(2) carry out the secondary screening through the lifting machine conveying to the second grade sieving mechanism with the bright leaf of tea in the groove that will gather, be equipped with in the second grade sieving mechanism and be used for collecting the hierarchical silo of receiving of the bright leaf of tea that the secondary screening was sieved and supply a plurality of screening holes that the bright leaf of tea passed through, utilize the physical characteristics that the appearance size is different of the bright leaf of tea self, the bright leaf of tea of different overall dimension passes through not unidimensional screening hole, through the second grade screening processing, the bright leaf of tea after the hierarchical screening enters into corresponding hierarchical silo of receiving, thereby realize the hierarchical screening and the collection to the bright leaf of tea of different overall dimensions.
2. The method for classifying fresh tea leaves according to claim 1, wherein the method comprises the following steps: the secondary screening device comprises a rack and screening mechanisms arranged in the rack, wherein a plurality of layers of screening mechanisms are arranged in the rack from top to bottom, collecting tanks are also arranged in the rack, the collecting tanks are positioned below the screening mechanisms at the lowest layer, the number of the grading material receiving tanks corresponds to that of the screening mechanisms, and the grading material receiving tanks are arranged at the output end of the screening mechanisms; the pore sizes of the screening holes in the screening mechanism are sequentially arranged from top to bottom according to the sequence of gradually decreasing from large to small; the screening mechanism comprises a conveying channel and a driving device for driving the conveying channel to move in the rack, wherein a plurality of screening holes distributed in a matrix form are formed in the conveying channel.
3. The method for classifying fresh tea leaves according to claim 2, wherein the method comprises the following steps: screening mechanism is equipped with the three-layer, divide into upper and middle and three-layer down, and the transfer passage in every layer of screening mechanism comprises a plurality of cylinders and many ring lines, wherein the cylinder evenly arranges in the frame along the vertical equidistant of frame, the ring line evenly arranges in the cylinder along the vertical equidistant of frame, be the vertical state each other between cylinder and the ring line and arrange the screening hole that forms the matrix and distribute, ring line among the transfer passage can be under drive arrangement's effect, returns font cyclic motion in the frame, the cylinder can rotate in the frame under the effect of ring line.
4. The method for classifying fresh tea leaves according to claim 3, wherein the method comprises the following steps: the driving device comprises a main transmission shaft, two driven transmission shafts, two conveying belts and a motor, wherein the main transmission shaft is connected with the driven transmission shafts through the conveying belts, the main transmission shaft and the driven transmission shafts are arranged in the rack along the longitudinal direction of the rack, the two driven transmission shafts are arranged at the front end and the rear end of the rack, the main transmission shaft is arranged between the two driven transmission shafts and is positioned in the middle of the rack, and the main transmission shaft, the driven transmission shafts and the conveying belts are positioned at the same horizontal position; the motor is arranged on the side surface of the rack, the main transmission shaft is connected with an output shaft of the motor, power is provided through the motor, and the main transmission shaft drives the driven transmission shaft through a belt; the annular line is connected with the driven transmission shaft through the roller, and the roller is driven by the annular line to synchronously rotate in the rack under the action of the driven transmission shaft; get into the bright leaf of tea among the transfer passage along with transfer passage synchronous motion in-process, through the screening hole that forms between annular line and the cylinder, utilize the physical characteristics that the appearance of the bright leaf of tea self is not of uniform size, under the action of gravity of tealeaves self, the bright leaf of tea of appearance size difference passes through the screening hole in different apertures between the upper and lower floor, get into corresponding hierarchical receipts silo and collect, and the bright leaf of tea through in the lower floor screening mechanism passes through the collecting vat and concentrates the collection, thereby realize the hierarchical screening and the collection to the bright leaf of tea of different overall dimensions.
5. The method for classifying fresh tea leaves as claimed in claim 4, wherein the method comprises the following steps: the screening hole is the rectangle structure, and a plurality of screening holes are matrix evenly distributed in second grade sieving mechanism, divide into A, B, C, D levels with the bright leaf geometric dimension of tea according to from big to little, the aperture size in screening hole is equipped with three kinds of specifications in proper order according to the order that reduces gradually from last to down, and wherein the bright leaf of tea that utilizes upper screening mechanism to collect is A level, utilizes the bright leaf of tea that middle level screening mechanism collected to be B level, utilizes the bright leaf of tea that lower floor screening mechanism collected to be C level, and through the screening hole in the screening mechanism of lower floor, gets into the bright leaf of tea of collecting in the collecting vat and is D level.
CN202010336475.3A 2020-04-26 2020-04-26 Grading screening method for fresh tea leaves Pending CN111299117A (en)

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CN202010336475.3A CN111299117A (en) 2020-04-26 2020-04-26 Grading screening method for fresh tea leaves

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Application Number Priority Date Filing Date Title
CN202010336475.3A CN111299117A (en) 2020-04-26 2020-04-26 Grading screening method for fresh tea leaves

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808567A (en) * 2020-12-30 2021-05-18 江苏威拉里新材料科技有限公司 Automatic frequency modulation 3D prints metal powder vibration powder shifter

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Publication number Priority date Publication date Assignee Title
DE3116699A1 (en) * 1981-04-28 1982-11-11 Niko Konserven-Maschinenfabrik Hinsbeck Gmbh & Co Kg, 4054 Nettetal Device for grading fruit or vegetables
CN106903051A (en) * 2017-04-17 2017-06-30 安徽农业大学 A kind of fresh leaf screening machine for tea making
CN206356236U (en) * 2016-11-11 2017-07-28 郭中旺 Level Four sieve tea machine is decomposed in one kind vibrations
CN107520135A (en) * 2017-09-12 2017-12-29 安顺市晶英科技研发有限责任公司 A kind of machine tea picking leaf screening installation
CN107597589A (en) * 2017-10-17 2018-01-19 池州市贵池区七山茶厂 A kind of automatical and efficient fresh tea leaf grading plant
CN207547040U (en) * 2017-11-24 2018-06-29 贵州省湄潭县鑫辉茶业有限公司 A kind of defeated machine of Multifunctional flat
CN207951946U (en) * 2017-12-20 2018-10-12 信阳师范学院 A kind of fresh tea leaf screening installation
CN208771880U (en) * 2018-08-22 2019-04-23 云南农业大学 A kind of tea grading machine with tea stem separating device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116699A1 (en) * 1981-04-28 1982-11-11 Niko Konserven-Maschinenfabrik Hinsbeck Gmbh & Co Kg, 4054 Nettetal Device for grading fruit or vegetables
CN206356236U (en) * 2016-11-11 2017-07-28 郭中旺 Level Four sieve tea machine is decomposed in one kind vibrations
CN106903051A (en) * 2017-04-17 2017-06-30 安徽农业大学 A kind of fresh leaf screening machine for tea making
CN107520135A (en) * 2017-09-12 2017-12-29 安顺市晶英科技研发有限责任公司 A kind of machine tea picking leaf screening installation
CN107597589A (en) * 2017-10-17 2018-01-19 池州市贵池区七山茶厂 A kind of automatical and efficient fresh tea leaf grading plant
CN207547040U (en) * 2017-11-24 2018-06-29 贵州省湄潭县鑫辉茶业有限公司 A kind of defeated machine of Multifunctional flat
CN207951946U (en) * 2017-12-20 2018-10-12 信阳师范学院 A kind of fresh tea leaf screening installation
CN208771880U (en) * 2018-08-22 2019-04-23 云南农业大学 A kind of tea grading machine with tea stem separating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112808567A (en) * 2020-12-30 2021-05-18 江苏威拉里新材料科技有限公司 Automatic frequency modulation 3D prints metal powder vibration powder shifter

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Application publication date: 20200619