CN103721946B - Closed type tea leaf selecting method - Google Patents
Closed type tea leaf selecting method Download PDFInfo
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- CN103721946B CN103721946B CN201410008615.9A CN201410008615A CN103721946B CN 103721946 B CN103721946 B CN 103721946B CN 201410008615 A CN201410008615 A CN 201410008615A CN 103721946 B CN103721946 B CN 103721946B
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Abstract
The invention discloses a closed type tea leaf selecting method. Primary air separation, color sorting, secondary air separation and visual sorting are carried out in an enclosed space. Separating efficiency is improved, separating cost is lowered, a vibrating screen is not used in the whole process, the damage of separation to tea leaves is lowered to be minimum degree, the entire tea leaf separating stage is performed under a closed environment, and the external environment can not be polluted.
Description
Technical field
The present invention relates to and a kind of closedly select tea method, belong to and select tea separation field.
Background technology
According to incompletely statistics, China account for tealeaves total output less than 5% Famous High-quality Tea, its output value reaches more than 20% of the gross output value unexpectedly, illustrates that tea leaf quality is better, and be worth higher, economic benefit is also more remarkable.Although the output of China's tealeaves and sales volume are all very large, but detect and tea dry sorting technology due to the tea leaf quality lacking science, be difficult to quality and the rank of differentiating tealeaves quick and objectively.At present, on market there is very large randomness in the classification of tealeaves, have impact on production and the operation of tealeaves.Simultaneously along with the technical standard of developed country's green technology trade barrier is more and more higher, the impact that China's tea export trade is subject to is also more and more obvious.Therefore need the research mechanism that detects fast of tea leaf quality and method badly, improve the detection technique level of China's tea leaf quality, strengthen tea dry sorting management.But existing tea functions of the equipments of selecting are single, a set of sorting flow process gets off to need to use multiple equipment such as selection by winnowing, look choosing, not only takes up an area many, big energy-consuming, and connection between equipment is also difficult.
Summary of the invention
The object of the present invention is to provide a kind of enclosed tender tealeaves separation method.
The present invention realizes by the following method:
This is closed selects tea method to employ a kind ofly enclosedly to select tea seperator, this selects tea seperator to have seperator main body, also comprises: material loading swash plate, long conveying belt with holes, selection by winnowing room narrow portion, look select impurity discharging port, wide portion, selection by winnowing room, rotary-chain, vacuum draw mouth, discharge block piece, dropping channel, look to select camera, display, controller, jet structure, vision camera, short conveying belt with holes, waste material discharge gate, vacuum sorting portion, hopper, horizontal blast machine, vertical ventilation machine; Wherein vacuum sorting portion comprises the first vacuum sorting portion, the second vacuum sorting portion, the 3rd vacuum sorting portion; Corresponding with first, second and third vacuum sorting portion is the first hopper, the second hopper, the 3rd hopper;
Tea method is selected to be specially:
1) stage tea stalk yellow threshold value is selected, the shape of visual selection stage full bud, bud one leaf, bud two leaf and textural characteristics value by display and input equipment to controller input look;
2) enter first time selection by winnowing, tender tealeaves slides to long conveying belt with holes from material loading swash plate, and the suction strength of adjustment vertical ventilation machine wind speed and vacuum draw mouth, upwards blows into selection by winnowing room narrow portion by tender tealeaves, stayed by the first waste material on long conveying belt with holes; Tender tealeaves enters wide portion, selection by winnowing room from selection by winnowing room narrow portion, and blast declines, tender tealeaves dispersion, and be blown to rotary-chain, under the effect of discharge block piece, tender tealeaves is brought to side by rotary-chain and drops to dropping channel;
3) enter look and select the stage, select camera to set out yellow tea stalk by look, and be blown into look by jet structure and select impurity discharging port, tea stalk is discharged from look gather channel outlet of mixing;
4) enter second time selection by winnowing, adjustment horizontal blast machine wind speed, blows to short conveying belt with holes by tender tealeaves, and the second waste material slides to out second time selection by winnowing outlet along horizontal blast machine surface;
5) visual selection is entered, be full bud, bud one leaf, bud two leaf three class by vision camera by the tender tea dry sorting that long conveying belt with holes transports, and by the first vacuum sorting portion, the second vacuum sorting portion, the 3rd vacuum sorting portion, this three class sent into the first hopper, the second hopper, the 3rd hopper respectively;
6) the first waste material, tea stalk and the second waste material are recovered at same plane.
Be more preferably, when full bud is transported to the end of short conveyer belt with holes, it has been distinguished by controller and has been decided to be full bud, controller sends control command and is run in the first vacuum sorting portion, second and third vacuum sorting portion does not run, and full bud is adsorbed on the end of short conveyer belt with holes at the beginning by the first vacuum sorting portion, when full bud is sent to region corresponding to the second vacuum sorting portion, be affected by gravity, enter the first hopper; When one bud one leaf enters vacuum sorting portion, first and second vacuum sorting portion runs, and the 3rd vacuum sorting portion does not run, and like this, bud one leaf enters the second hopper; In like manner, during a bud two leaf sorting, the first to three vacuum sorting portion all runs, and finally it enters the 3rd hopper.
Be more preferably, short conveying belt rotating speed with holes is consistent with the wind speed of horizontal wind, and tender like this tealeaves can not by horizontal wind disturbance when transported; Or have vacuum adsorption equipment at short conveying belt with holes, tender tealeaves is fixed on conveyer belt upper surface, advances together with conveyer belt.
beneficial effect
1. the present invention is by rational topology layout, by the one-level selection by winnowing of tealeaves, look selects, secondary selection by winnowing and visual selection on one machine integrated, selection by winnowing room and look select the ingenious arrangement of impurity discharging passage, make it in a little space, have selection by winnowing room narrow portion, wide portion and the multi-functional sorting function of impurities removal, and all being excluded miscellaneously can return that long conveying belt with holes is unified to be got rid of.
2. whole process of the present invention does not use vibratory sieve, come to be separated tender tealeaves with look choosing by selection by winnowing, not only good impurity removing effect, also process for refining can be optimized, reduce repeatedly cut, tremble, the sieve series operation such as to raise, avoid too much disconnected broken of tealeaves, reach to pick and pick the processing effect that quality is high, work efficiency is high, tea making cost reduces, substantially solve tealeaves in the past and pick and pick of poor quality and that work efficiency is low defect.And a machine can select the tealeaves of three kinds of grades, and economic effect is obvious.
3, the closed tea seperator that selects of the present invention carries out tea dry sorting under enclosed environment, eliminates the pollution of dust to environment.
Accompanying drawing explanation
Fig. 1 is the closed structural representation selecting tea seperator;
Fig. 2 is the enlarged drawing of part A in Fig. 1.
Fig. 3 is the enlarged drawing of part B in Fig. 1.
In figure: 1, material loading swash plate; 2, long conveying belt with holes; 3, selection by winnowing room narrow portion; 4, look selects impurity discharging port; 5, wide portion, selection by winnowing room; 6, discharge block piece; 7, exhaust passage; 8, exhaust equipment; 9, dropping channel; 10, look selects camera; 11, display; 12, controller; 13, jet structure; 14, vision camera; 15, short conveying belt with holes; 16, the first vacuum sorting portion; 17, the 3rd vacuum sorting portion; 18, the second vacuum sorting portion; 19, waste material discharge gate; 20, the first hopper; 21, the second hopper; 22, the 3rd hopper; 23, jet removal of impurities portion; 24, horizontal blast machine; 25, vertical ventilation machine; 26, the first flashboard; 27, the second flashboard; 28, the 3rd flashboard; 29, cleaner; 30,32,34,35, volume control damper; 33, additional mechanical supercharging equipment.
Detailed description of the invention
Be described further below in conjunction with accompanying drawing:
As shown in Figure 1, the tea seperator that selects of the present invention comprises seperator main body, one end of seperator main body is provided with material loading swash plate 1, it is the long conveying belt with holes 2 of anti-electrostatic below material loading swash plate 1, long conveying belt 2 with holes has vertical ventilation machine 25, vertical ventilation machine 25 upwards carries high wind, carry out first time selection by winnowing, high wind enters the selection by winnowing room narrow portion 3 of seperator body interior, it is wide portion 5, selection by winnowing room above selection by winnowing room narrow portion 3, selection by winnowing room narrow portion 3 is connected with wide portion 5, selection by winnowing room, first tender tealeaves is upwards entered selection by winnowing room narrow portion 3 by high wind after long conveying belt 2 with holes blows off, after entering wide portion 5, selection by winnowing room from selection by winnowing room narrow portion 3, based on fluid mechanics knowledge, blast declines suddenly, tender tealeaves is well separated from one another under this effect.
Tender tealeaves is attracted to rotary-chain 6 further, rotary-chain 6 supports a general quadrangle by four sprocket wheels, a vacuum draw mouth 7 is provided with in the region that rotary-chain 6 surrounds, and upper in inner side of quadrangle, a left side, Seal treatment is all done in right three directions, and vacuum draw mouth only can act on the rotary-chain on the downside of quadrangle, one end of the downside of quadrangle is provided with discharge block piece, and the below of material block piece is dropping channel.Prove by experiment, if only with vertical blower fan 25 tender tealeaves blowed to rotary-chain 6 carry out first time sorting time, the vertical velocity needed is larger, sandwich some weights sometimes, this increases pressure to the choosing of look below and secondary selection by winnowing, if but added vacuum draw mouth, lifting force can be applied from top, when tender tealeaves is picked up, waste material is not blown afloat or disturbance, guided on rotary-chain 6 by vacuum draw mouth after tender tealeaves is blown into wide portion 5, selection by winnowing room, then by discharge block piece 8 discharge, better can realize first time selection by winnowing.By this first time selection by winnowing, large stone, the large quality foreign material such as bark have been stayed on long conveying belt 2 with holes, tender tealeaves relies on gravity to drop to dropping channel 9 and enters look and select the stage, vacuum draw mouth 7 is communicated with negative pressure generating device 31 by cleaner 29, volume control damper 30 is set between cleaner 29 and negative pressure generating device 31, volume control damper 32 is set between negative pressure generating device 31 and additional mechanical supercharging equipment 33, the high-pressure side of additional mechanical supercharging equipment 33 is by volume control damper 34, 35 are connected with horizontal blast machine 24 with vertical ventilation machine 25, according to impurity situation in the tender tealeaves carried by rotary-chain 6 or negative pressure value and the horizontal blast machine 24 that the actual conditions such as dynamics on rotary-chain 6 adjust vacuum draw mouth 7 place can be attached to, the wind pressure value of vertical ventilation machine 25, when horizontal blast machine 24, when vertical ventilation machine 25 blast is not enough, open additional mechanical supercharging equipment 33 and carry out supercharging.
Look selects the stage to use photoelectric color to select system, photoelectric color selects system to be the core of color selector, camera 10 and relevant auxiliary devices composition is selected primarily of light source, background board, look, light source provides stable Uniform Illumination for tested tender tealeaves and background board, look selects camera 10 to be CCD camera lenses, and the reverberation of tested material in detecting area is converted into the signal of telecommunication by it.Background board then provides reference signal (not shown in figure 1) for electric-control system, and the light-reflecting property of its light-reflecting property and certified products is substantially equivalent, and differs greatly with rejecting thing.Look selects camera 10 to be connected with the high-precision aberration induction system that yellow colors model is housed, generally tea stalk is partially yellow, color-values is bigger than normal, namely tea stalk is older, color and luster is more yellow, color-values is larger, then more easily caught by the high-precision aberration induction system that yellow colors model is housed and collect, and input control device, go out signal instruction by controller, tea stalk is photographed, and high-speed electromagnetic valve is connected, pressure-air goes out pulse wind by pipeline and jet structure 13, tea stalk is blown out from the tender tealeaves containing stalk, selects impurity discharging port 4 to discharge outside machine by look.
Look selects the lower end of impurity discharging port 4 to be still long conveying belt 2 with holes, and look, by rational structure arrangement, selects impurity discharging passage to embed to selection by winnowing room, namely defines selection by winnowing room narrow portion 3, therefore make to select tea seperator overall volume to diminish by seperator main body.
Horizontal blast machine 24 below jet structure 13; at horizontal blast machine 24, place carries out second time selection by winnowing; the wind that vertical ventilation machine is sent is larger; some heavy material heavy materials are swept along unavoidably in tealeaves; in second time selection by winnowing; horizontal wind sent by horizontal blast machine 24; tender tealeaves is under horizontal wind action; be blown on short conveying belt 15 with holes; and the fall trajectory of heavy material is not substantially by the impact of horizontal wind; therefore drop on long conveying belt 2 with holes, being blown to tender tealeaves on short conveying belt 15 with holes is selected tealeaves.Be preferably, short conveying belt 15 rotating speed with holes is consistent with the wind speed of horizontal wind, and tender like this tealeaves can not by horizontal wind disturbance when transported; Also can have vacuum adsorption equipment at short conveying belt 15 with holes, tender tealeaves is fixed on conveyer belt upper surface, advance together with conveyer belt.
By further for selected tealeaves classification, enter the visual selection stage, before visual selection, in controller, prestore full bud, bud one leaf, the iconic model of bud two leaf and textural characteristics by input equipment and display 11, and set shape and textural characteristics parameter.Vision camera 14 and light source is provided with above short conveying belt 15 with holes, this vision camera 14 is made up of three multispectral CC cameras, color data that is green, red, near-infrared 3 wave bands can be obtained respectively, 3CCD multi-spectral imager in use, the light of object emission is through the 1st look film, wavelength is passed through higher than the light of 630nm, by imaging on CCD sensor after the part that reflects after filtration mating plate, obtains green channel image.By part again through the 2nd look film, light is made to be divided into 2 parts by frequency.Part imaging on ruddiness CCD sensor, another part imaging on Near Infrared CCD sensor.3 wave bands by frequency distribution be: the centre frequency of green channel at 540 nm, bandwidth chahnel about 40nm; Red channel centre frequency at 670 nm, bandwidth chahnel 40 about nm: the centre frequency of near infrared channels at 800nm, bandwidth chahnel about 65nm.After video camera obtains the monochrome image of green, red, near-infrared 3 waveband channels, be sent to controller 12 by the data receiver plate of PCI1424 (NationalInstrument company), its input control port is RS232.
Controller has included machine vision software, as CCD DTControl image capture software, for arranging image gain, controls that time for exposure, image are integrated, RGB regulates and graphical analysis etc.Matlab image processing software, for the extraction of image procossing and tealeaves feature.Matlab data analysis module is used for principal component analysis, and DPS (data procession system for practical statistics) is for establishment model model of cognition.
The vision camera 14 in visual selection stage also can adopt conventional single CCD camera, and this IMAQ has been conventional prior art.
See Fig. 2, through the identification of controller, correctly classified by tender tealeaves, enter vacuum sorting portion afterwards, vacuum sorting portion is located at one end of short conveyer belt 15 with holes, relative with horizontal blast machine 24.By the first hopper 20, second hopper 21 and the 3rd hopper 22 be corresponding full bud, bud one leaf, bud two leaf respectively, when full bud is transported to the end of short conveyer belt 15 with holes, it has been distinguished by controller and has been decided to be full bud, controller sends control command and is run in the first vacuum sorting portion 16, second and third vacuum sorting portion does not run, full bud is adsorbed on the end of short conveyer belt 15 with holes at the beginning by the first vacuum sorting portion 16, when full bud is sent to region corresponding to the second vacuum sorting portion, be affected by gravity, enter the first hopper 20; When one bud one leaf enters vacuum sorting portion, first and second vacuum sorting portion runs, and the 3rd vacuum sorting portion does not run, and like this, bud one leaf enters the second hopper 21; In like manner, during a bud two leaf sorting, the first to three vacuum sorting portion all runs, and finally it enters the 3rd hopper.And waste material is discharged from waste material discharge gate is unified.The downside of short conveyer belt 15 with holes is also provided with jet removal of impurities portion, for oppositely removing the tamper on short conveyer belt 15 with holes in hole.Point choosing of reality, if selected tealeaves only divides qualified and defective, only need a vacuum sorting portion.
The application's another one innovation is its discharge system, as can be seen from Figure 1, the heavy waste material that the long conveying belt with holes 2 that first selection by winnowing stage is corresponding bottom selection by winnowing room narrow portion 3 is formed, look gather mix channel exit discharge tea stalk, and the waste material that second time selection by winnowing is discharged finally all is recovered in same transporting flat, mixes and discharges from waste material discharge gate 19.Choose in dividing of reality, many different situations can be run into, the waste material of such as certain batch tender tealeaves is primarily of the weight such as branch, bark and the listless tealeaves composition that withers that turned to be yellow, and the listless tealeaves that withers selects the stage to be easily identified as tea stalk at look and is discharged, and this kind of listless tealeaves that withers be only economic worth a little less than tender tealeaves, but be also those skilled in the art wish reclaim; In the second time selection by winnowing stage, a bud is leafy sometimes, or band branches and leaves due to gravity excessive, be also excluded, equally, this be also those skilled in the art wish reclaim.For this reason, further, the upstream bottom selection by winnowing room narrow portion 3 arranges the first flashboard 26; Selection by winnowing room narrow portion 3 and look gather are mixed between channel outlet and are arranged the second flashboard 27; Mix between channel outlet and second time selection by winnowing outlet in look gather and the 3rd flashboard 28 is set.Wherein, the first flashboard 26 controls material loading, and when screening installation catastrophic failure, the first flashboard 26 falls and guides tender tealeaves stream to return to upstream feeds portion; When second flashboard 27 falls, first time selection by winnowing heavy waste material in advance directed discharge, and tea stalk and the waste material that selection by winnowing is discharged for the second time are mixed and discharge; When 3rd flashboard 28 falls, the heavy waste material of selection by winnowing is guided discharge in advance together with tea stalk for the first time, and the waste material that second time selection by winnowing is discharged is discharged separately.So just achieve the control to discharge.
In addition, also can long conveying belt 2 with holes be only arranged on bottom selection by winnowing room narrow portion 3, reduce its length, look gather mix channel outlet and second time selection by winnowing outlet place a long conveying belt is set to transport both mixtures, or two short conveying belts are set again, according to the actual needs, conventional design can be carried out to the length of conveyer belt and the kind of waste material mixing, therefore, waste material returns same plane and reclaims the economic worth being beneficial to and improving byproduct.
Two sections of conveyer belts also can be set, except long conveying belt with holes, second discharge conveyer belt is also set, and have driven in translation equipment to be connected with both, in a first state, long conveying belt with holes corresponding selection by winnowing room narrow portion, the corresponding look gather of the second discharge conveyer belt is mixed channel outlet and second time selection by winnowing outlet; Under second state, driving arrangement, by two joint conveyer belt translations, makes the corresponding selection by winnowing room narrow portion of long conveying belt with holes and look gather mix channel outlet, the second discharge conveyer belt corresponding second time selection by winnowing outlet.In assorting room, can switch the take-back model of waste material so fast, the transport model of this flexibility can well tackle the sorting demand of modern tea dry sorting factory multi items, complicated ingredient raw material.
What those skilled in the art can know is, the rotating speed of rotary-chain 6 is adjustable, be as the criterion with the look favored area that enters that tender tealeaves is evenly separated, and multiple sort channel can be opened according to actual needs, namely look selects camera 10, jet structure 13, vision camera 14, short conveying belt with holes 15 and vacuum sorting portion can be provided with multiple, to tackle large batch of sorting requirement.
Although with reference to embodiment to the special description of having selected tea seperator to carry out of the disclosed one related to; embodiment described above is illustrative and not restrictive; without departing from the present invention, all changes and amendment are all within protection scope of the present invention.
Claims (5)
1. one kind is closedly selected tea method, it use one and select tea seperator, this selects tea seperator to have seperator main body, it is characterized in that: seperator main body also comprises: material loading swash plate (1), long conveying belt with holes (2), selection by winnowing room narrow portion (3), look selects impurity discharging port (4), wide portion, selection by winnowing room (5), rotary-chain (6), vacuum draw mouth (7), discharge block piece (8), dropping channel (9), look selects camera (10), display (11), controller (12), jet structure (13), vision camera (14), short conveying belt with holes (15), waste material discharge gate (19), vacuum sorting portion, hopper, horizontal blast machine (24), vertical ventilation machine (25), wherein vacuum sorting portion comprises the first vacuum sorting portion (16), the second vacuum sorting portion (18), the 3rd vacuum sorting portion (17), corresponding with first, second and third vacuum sorting portion is the first hopper (20), the second hopper (21), the 3rd hopper (22),
Tea method is selected to be specially:
1) stage tea stalk yellow threshold value is selected, the shape of visual selection stage full bud, bud one leaf, bud two leaf and textural characteristics value by display (11) and input equipment to controller (12) input look;
2) first time selection by winnowing is entered, tender tealeaves slides to long conveying belt with holes (2) from material loading swash plate (1), the suction strength of adjustment vertical ventilation machine (25) wind speed and vacuum draw mouth (7), upwards tender tealeaves is blown into selection by winnowing room narrow portion (3), the first waste material is stayed on long conveying belt with holes (2); Tender tealeaves enters wide portion, selection by winnowing room (5) from selection by winnowing room narrow portion (3), and blast declines, tender tealeaves dispersion, and be blown to rotary-chain (6), under the effect of discharge block piece (8), tender tealeaves is brought to side by rotary-chain (6) and drops to dropping channel (9);
3) enter look and select the stage, select camera (10) to identify yellow tea stalk by look, and be blown into look by jet structure (13) and select impurity discharging port (4), tea stalk is discharged from look gather channel outlet of mixing;
4) enter second time selection by winnowing, adjustment horizontal blast machine (24) wind speed, blows to short conveying belt with holes (15) by tender tealeaves, and the second waste material slides to second time selection by winnowing outlet along horizontal blast machine (24) surface;
5) visual selection is entered, the tender tea dry sorting above transported by short conveying belt with holes (15) by vision camera (14) is full bud, bud one leaf, bud two leaf three class, and by the first vacuum sorting portion (16), the second vacuum sorting portion (18), the 3rd vacuum sorting portion (17), this three class is sent into the first hopper (20), the second hopper (21), the 3rd hopper (22) respectively;
6) the first waste material, tea stalk and the second waste material are recovered at same plane.
2. closedly as claimed in claim 1 select tea method, it is characterized in that: when full bud is transported to the end of short conveying belt with holes (15), it has been distinguished by controller and has been decided to be full bud, controller sends control command and is run in the first vacuum sorting portion (16), second and third vacuum sorting portion does not run, full bud is adsorbed on the end of short conveying belt with holes (15) at the beginning by the first vacuum sorting portion (16), when full bud is sent to region corresponding to the second vacuum sorting portion, be affected by gravity, enter the first hopper (20); When one bud one leaf enters vacuum sorting portion, first and second vacuum sorting portion runs, and the 3rd vacuum sorting portion does not run, and like this, bud one leaf enters the second hopper (21); In like manner, during a bud two leaf sorting, the first to three vacuum sorting portion all runs, and finally it enters the 3rd hopper (22).
3. closed as described in aforementioned claim 1 or 2 selects tea method, and it is characterized in that: short conveying belt with holes (15) rotating speed is consistent with the wind speed of horizontal wind, tender like this tealeaves can not by horizontal wind disturbance when transported; Or have vacuum adsorption equipment at short conveying belt with holes (15), tender tealeaves is fixed on short conveying belt with holes (15) upper surface, advances together with short conveying belt with holes (15).
4. according to claim 3ly closedly select tea method as aforementioned, it is characterized in that: the first flashboard (26) is set in the upstream of bottom, selection by winnowing room narrow portion (3); Selection by winnowing room narrow portion (3) and look gather are mixed between channel outlet and are arranged the second flashboard (27); Mix between channel outlet and second time selection by winnowing outlet in look gather and the 3rd flashboard (28) is set, according to actual sorting situation, select whether use the first to three flashboard.
5. according to claim 3ly closedly select tea method as aforementioned, it is characterized in that: except long conveying belt with holes (2), second discharge conveyer belt is also set, and have driven in translation equipment to be connected with both, in a first state, long conveying belt with holes (2) corresponding selection by winnowing room narrow portion (3), the corresponding look gather of the second discharge conveyer belt is mixed channel outlet and second time selection by winnowing outlet; Under second state, driving arrangement, by two joint conveyer belt translations, makes long conveying belt with holes (2) corresponding selection by winnowing room narrow portion (3) and look gather mix channel outlet, the corresponding selection by winnowing outlet for the second time of the second discharge conveyer belt.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410008615.9A CN103721946B (en) | 2014-01-09 | 2014-01-09 | Closed type tea leaf selecting method |
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| CN201410008615.9A CN103721946B (en) | 2014-01-09 | 2014-01-09 | Closed type tea leaf selecting method |
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| CN103721946B true CN103721946B (en) | 2015-07-22 |
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| JP2002001231A (en) * | 2000-06-28 | 2002-01-08 | Shibuya Kogyo Co Ltd | Foreign substance removing device |
| JP2003111556A (en) * | 2001-10-04 | 2003-04-15 | Terada Seisakusho Co Ltd | Screening machine for tea processing |
| CN201346540Y (en) * | 2008-12-30 | 2009-11-18 | 天津市华核科技有限公司 | Color sorting device on the basis of system on programmable chip |
| CN102284433A (en) * | 2011-08-08 | 2011-12-21 | 合肥泰禾光电科技有限公司 | Sorting method and sorting machine for tea leaves |
| CN102744218A (en) * | 2011-12-29 | 2012-10-24 | 安徽中科光电色选机械有限公司 | Tea leaf color sorter |
| KR101194776B1 (en) * | 2012-01-19 | 2012-10-25 | 주식회사 아이디알시스템 | Color sorting device of three step |
| CN203108820U (en) * | 2013-03-12 | 2013-08-07 | 宁德市奇隆翔农业有限公司 | Tea-leaf color sorter with dustproof device |
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