CN206229727U - Male and female silkworm chrysalis gravity electronic method intelligence separator - Google Patents
Male and female silkworm chrysalis gravity electronic method intelligence separator Download PDFInfo
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- CN206229727U CN206229727U CN201621268034.XU CN201621268034U CN206229727U CN 206229727 U CN206229727 U CN 206229727U CN 201621268034 U CN201621268034 U CN 201621268034U CN 206229727 U CN206229727 U CN 206229727U
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- pupa
- band
- yong
- silkworm chrysalis
- male
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Abstract
A kind of male and female silkworm chrysalis gravity electronic method intelligence separator, including：Chu Yong areas, for receiving silkworm chrysalis to be sorted；Chuan Yong mechanisms, with the adjoining of Chu Yong areas, comprising pupa band is passed, pass and multiple pupa grooves and convex every pupa are arranged at intervals with pupa band, and each pupa groove is only capable of accommodating simple grain silkworm chrysalis；Weighing mechanism, is arranged on the end of Chuan Yong mechanisms, including weighing pan and gravity sensor；Bo Yong mechanisms, allocate to corresponding collection device for the silkworm chrysalis after having been weighed on weighing pan automatically；And intelligence control system, for controlling the coordinated operation between Chuan Yong mechanisms, Weighing mechanism and Bo Yong mechanisms.According to male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator, male and female silkworm chrysalis can be rapidly sorted automatically, ensure that quality of silkworm eggs, production efficiency is greatly improved, with wide market application foreground.
Description
Technical field
The utility model relates in general to male and female silkworm chrysalis separator, and in particular to a kind of male and female silkworm chrysalis gravity electronic method intelligently divides
Select machine.
Background technology
Had been used up in the production of the hybrid seeds of silkworm pupa (or silkworm) phase differentiate male and female, allow its separate moth appearance, to hand over the production of hybrid seeds
Method.Current China seed station is most of to raise kind of a silkworm in rural area original silkworm point, and kind of a cocoon is paid and gives the seed station production of hybrid seeds by silkworm raiser.Plant field
Cocoon mirror pupa workload is cut when silkworm egg production is carried out very big, and the time concentrates, and causes male and female to obscure unavoidably in acting hurriedly in a messy situation, so that hair
Homology selfing has had a strong impact on quality of silkworm eggs into purebred after moth.For this problem, we grind with reference to relevant research both at home and abroad
Male and female silkworm chrysalis gravitational method e-sort machine is made.Because simple grain pupa only has 1g or so again, and male and female open difference averagely less than 0.3g,
The method sorted using the existing industrial conveyer belt with weighing sensor can not be realized.To solve to sub-elect simultaneously
Female, male nothing mix and need to use three-stage, therefore it is required that more accurate.
Utility model content
The purpose of this utility model is to provide a kind of male and female silkworm chrysalis gravity electronic method intelligence separator, for quickly sorting
Male and female silkworm chrysalis.
According to male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator, including：
Chu Yong areas, for receiving silkworm chrysalis to be sorted；
Chuan Yong mechanisms, with the adjoining of Chu Yong areas, comprising pupa band is passed, being arranged at intervals with multiple on biography pupa band can accommodate simple grain silkworm chrysalis
Pupa groove；
Weighing mechanism, is arranged on the end of Chuan Yong mechanisms, including weighing pan and gravity sensor；
Bo Yong mechanisms, allocate to corresponding collection device for the silkworm chrysalis after having been weighed on weighing pan automatically；And
Intelligence control system, for controlling the coordinated operation between Chuan Yong mechanisms, Weighing mechanism and Bo Yong mechanisms.
In a specific embodiment of the present utility model, Chuan Yong mechanisms include a plurality of biography pupa band, a plurality of biography pupa band Cheng Yuan
Dish type is distributed in around Chu Yong areas.Under preferable case, Chuan Yong mechanisms also include motor, active powershift gear, transfer powershift gear, pass pupa
Band main power wheel, biography pupa band driven front wheels and biography pupa band driven rear wheel；Wherein active powershift gear is fixed on motor shaft, Duo Gefen
Power gear is distributed in around active powershift gear and engages, and each transfer powershift gear passes through axostylus axostyle and respective biography pupa respectively
Band main power wheel connection, passes pupa band main power wheel and passes pupa band driven front wheels by feed belt drive, passes pupa band and is arranged on biography pupa
On band driven front wheels and biography pupa band driven rear wheel.
In another specific embodiment of the present utility model, Chuan Yong mechanisms include a plurality of biography pupa band, and a plurality of biography pupa band is put down
Row is distributed in around Chu Yong areas.Under preferable case, Chuan Yong mechanisms also include motor, main power shaft, pass pupa band driving wheel, pass pupa band
Driven front wheels and biography pupa band driven rear wheel；Connected by shaft coupling between main power shaft and motor shaft, multiple passes pupa band driving wheel
Be arranged on main power shaft, pass pupa band driving wheel drive pass pupa band driven front wheels, pass pupa band be arranged on biography pupa band driven front wheels and
Pass on pupa band driven rear wheel.
Under concrete condition, limit pupa baffle plate is provided with above the biography pupa band in neighbouring Chu Yong areas.
Under concrete condition, Bo Yong mechanisms use magnetic-type group of pupa broom structure or compressed air purging formula.
In a preferred embodiment, Bo Yong mechanisms include dialling pupa broom, dial pupa bar, inhale iron plate, electromagnet clockwise and inverse time
Pin electromagnet, wherein dial pupa broom and inhale iron plate being fixed on group pupa bar, electromagnet clockwise and electromagnet counterclockwise are adjacent to suction iron
Piece is set.
In another preferred embodiment, weighing pan is provided with female pupa outlet and male pupa outlet.
In a further preferred embodiment, weighing pan lower section is provided with wing drop mechanism, and the silkworm chrysalis after weighing is by automatic
Leaning device is slipped to subordinate's sorting mechanism or collection device from weighing pan.
Under preferable case, the precision of gravity sensor is less than 0.01 gram.So as to offer an explanation weight less than 2g, and
The positive and negative male and female opened within poor 0.1g of average weight number are individual.
In a specific embodiment of the present utility model, male and female silkworm chrysalis gravity electronic method intelligence separator also includes machine
Frame, for installing and fixing Chu Yong areas, Chuan Yong mechanisms, Weighing mechanism, Bo Yong mechanisms and intelligence control system.
According to male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator, male and female silkworm can be rapidly sorted automatically
Pupa, ensure that quality of silkworm eggs, greatly improve production efficiency, with wide market application foreground.
Brief description of the drawings
Fig. 1 is the general principle figure of male and female silkworm chrysalis gravity electronic method intelligence separator of the present utility model.
Fig. 2 is the structural representation of a specific embodiment of the present utility model.
Fig. 3 is the structural representation of the drive mechanism of the embodiment shown in Fig. 2.
Fig. 4 is the partial structural diagram of the drive mechanism shown in Fig. 3.
Fig. 5 is the structural representation of another specific embodiment of the present utility model.
Fig. 6 is the structural representation of the drive mechanism of the embodiment shown in Fig. 5.
The structural representation of Tu7Shi Bo pupas mechanism.
Fig. 8 is the principle schematic of intelligence control system in the utility model.
Fig. 9 is the circuit diagram of intelligence control system in one specific embodiment of the utility model.
Specific embodiment
Describe male and female silkworm chrysalis gravity electronic method intelligence separator of the present utility model in detail below in conjunction with the accompanying drawings.This area skill
Art personnel are not intended to the utility model it should be understood that discussed below merely to be better understood from the utility model
Make any limitation.Identical label represents same or analogous part in accompanying drawing.
Protein content and its internal structure in male and female silkworm chrysalis body is variant, in theory can be using X-ray, ultraviolet
The through transmission techniques such as line, near infrared ray are differentiated.But tested through department of physics of Sichuan University, it is believed that on general ultraviolet line X-ray machine, it is difficult
With quick discriminating male and female, even if testing out Special sorting equipment, its cost is also upper unacceptable production.Male and female silkworm chrysalis is in weight
Amount and body size aspect have extremely obvious difference, therefore we select weight size as sorting technology foundation.
By different silkworm races partition group, the original seed to same kind is raised under substantially the same conditions, the 3rd, 4 after pupating
It differentiates male and female, and the weight of simple grain male and female silkworm chrysalis is weighed up respectively, and male pupa is more lightweight than female pupa, and the silkworm of same kind even has maximum
Male silkworm chrysalis no more than minimum female pupa weight, male pupa is more minimum than the ratio of female pupa weight (weight intersections), between kind and different feedings
Weight has out difference under the conditions of supporting, and can also be sorted with body weight method.
According to male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator mainly include Chu Yong areas, Chuan Yong mechanisms,
Weighing mechanism, group (dividing) pupa mechanism, Weighing mechanism and intelligence control system.It is main according to intelligent separator of the present utility model
Chu Yong areas silkworm chrysalis to be sorted is divided into simple grain silkworm chrysalis by Chuan Yong mechanisms to be transmitted, simple grain silkworm chrysalis is carried out into Weighing mechanism
Weigh, Bo Yong mechanisms are used for the silkworm chrysalis after having been weighed on weighing pan automatically and allocate to corresponding collection device.Based Intelligent Control system
System is used for controlling the coordinated operation between Chuan Yong mechanisms, Weighing mechanism and Bo Yong mechanisms.
Referring to Fig. 1, multiple pupa grooves 2 are arranged at intervals with and every pupa convex 9 on the biography pupa band 1 of Chuan Yong mechanisms.Each pupa groove 2
It is only capable of accommodating simple grain silkworm chrysalis.Every pupa convex 9 two pupa grooves 2 on pupa band 1 will be passed to separate, and make pass pupa with 1 on two pupas
Pupa energy separated in time is fallen on weighing pan 7, and this time is sufficient for being weighed into pupa and is reversed from weighing pan 7.
Fig. 2-4 shows an intelligent separator for disc type table top.Wherein Chu Yong areas 11 are arranged on disc table top 10
Center, for receiving silkworm chrysalis to be sorted.A plurality of biography pupa band 1 is set around Chu Yong areas 11.Chuan Yong mechanisms include motor 20, master
Power gear 22, transfer powershift gear 23, biography pupa band 1, biography pupa are with driving wheel 3, biography pupa is with driven front wheels 4 and passes pupa with driven rear wheel
5.Wherein active powershift gear 22 is fixed on motor shaft 21, multiple transfer powershift gears 23 be distributed in around active powershift gear 22 and with
Its engagement, each transfer powershift gear 23 is connected by axostylus axostyle 29 with respective biography pupa band driving wheel 3 respectively, passes pupa band driving wheel 3
Driven by feed belt (or transmission chain) 6 and pass pupa band driven front wheels 4, passed pupa band 1 and be arranged on biography pupa band driven front wheels 4 and pass
On pupa band driven rear wheel 5.Limited pupa baffle plate 12 is set in the top of biography pupa band 1 in neighbouring Chu Yong areas 11, pupa 1 running of band is being passed
In, limit pupa baffle plate 12 is only capable of allowing that simple grain silkworm chrysalis enters in pupa groove 2.
Fig. 5-6 shows an intelligent separator for square mesa.Wherein Chu Yong areas 11 are arranged on a left side for square mesa 10
Side, a plurality of biography pupa is with 1 right side for being set in parallel in square mesa 10.Chuan Yong mechanisms include motor 20, main power shaft 26, pass pupa band
Driving wheel 3, biography pupa band driven front wheels 4 and biography pupa band driven rear wheel 5.Pass through shaft coupling 27 between main power shaft 26 and motor shaft 21
Connection, multiple passes pupas band driving wheels 3 and is arranged on main power shaft 26, passes pupa band driving wheel 3 by feed belt (or conveyer chain
Bar) 6 drive pass pupas band driven front wheels 4, pass pupa band 1 be arranged on biography pupa band driven front wheels 4 and pass pupa band driven rear wheel 5 on.In neighbour
The top of biography pupa band 1 in Jin Chuyong areas 11 sets limited pupa baffle plate 12, and in pupa 1 running of band is passed, limit pupa baffle plate 12 is only capable of holding
Perhaps simple grain silkworm chrysalis enters in pupa groove 2.
Above-mentioned two is implemented to be illustrated the intelligent separator of two kinds of table top distribution forms and the kind of drive, can be applicable
In different application scenarios.Certainly, those skilled in the art can also be carried out on the basis of embodiment is shown appropriate deformation and
Combination, takes the intelligent separator of other table top distribution forms and the kind of drive.But these deformations and combination should also belong to this
The protection domain of utility model.
In above-mentioned specific embodiment, male and female silkworm chrysalis gravity electronic method intelligence separator of the present utility model also generally has
Frame (cabinet).In the embodiment shown in Fig. 2-4, table top 10 is arranged in frame, and motor 20 is fixed in frame, axostylus axostyle 29
Fixed by bearing 25 and frame.In the embodiment shown in Fig. 5-6, the other end of main power shaft 26 passes through bearing 28 and frame
It is fixed.
In male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator, Weighing mechanism is arranged on Chuan Yong mechanisms
End.Weighing mechanism generally includes weighing pan 7 and gravity sensor 8.Due to the weight difference very little of male and female individuality silkworm chrysalis, therefore
The precision of gravity sensor 8 typically should be in below 0.01g.
In male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator, it is attached that Bo Yong mechanisms are arranged on Weighing mechanism
Closely, allocated to corresponding collection device automatically for the silkworm chrysalis after having been weighed on weighing pan 7 automatically.Weighing pan 7 can be set
There are female pupa outlet 14 and male pupa outlet 15.In some cases, due to individual difference, also there is the big male pupa of only a few female with small
Pupa has intersection in weight, is to solve this intersection, will have the part for intersecting another in these big male pupas and small female pupa weight
Small female big male hybrid region is classified as, therefore weighing pan 7 is also provided with mixing outlet 16.
Bo Yong mechanisms can have diversified forms, in a specific embodiment of the present utility model, can use magnetic-type
Dial pupa broom structure.Referring to Fig. 7, Bo Yong mechanisms include dialling pupa broom 13, dial pupa bar 30, inhale iron plate 31, electromagnet clockwise 32 and inverse
Hour hands electromagnet 33, wherein dial pupa broom 13 and inhale iron plate 31 being fixed on group pupa bar 30, dialling pupa bar 30 can be by upper bearing (metal) 34
It is connected with frame with lower bearing 35.Electromagnet 32 clockwise and the neighbouring iron plate 31 of inhaling of electromagnet counterclockwise 33 are set.By up time
The circuit turn-on of pin electromagnet 32 and electromagnet counterclockwise 33 dials pupa bar 30 clockwise or counterclockwise to drive, so as to drive
Pupa broom 13 is dialled to allocate male and female silkworm chrysalis to different outlets and be collected.
In some cases, the lower section of weighing pan 7 is also provided with wing drop mechanism (not shown), such as hydraulic pressure
Spring or magnetic-type structure, this wing drop mechanism are to those skilled in the art very common mechanisms, therefore
Detailed description is omitted herein.Silkworm chrysalis after weighing is slipped to subordinate from weighing pan 7 and sorts by wing drop mechanism
Mechanism or collection device.For example, Bo Yong mechanisms are under using magnetic-type group of the above pupa broom structure situation, when needs point
When mixing silkworm chrysalis from female pupa, the silkworm chrysalis that mixes on weighing pan 7 can be oriented to by receipts from outlet 16 is mixed by wing drop mechanism
Acquisition means.Additionally, in some embodiments of the present utility model, Bo Yong mechanisms can also be arranged to not connect directly with weighing pan 7
Touch, after silkworm chrysalis is weighed by weighing pan 7, silkworm chrysalis is oriented to by subordinate's sorting mechanism (such as conveyer belt by wing drop mechanism
Or collection table), then allocated to corresponding collection the silkworm chrysalis after weighing by the Bo Yong mechanisms that are arranged on subordinate's sorting mechanism
Device.
In other embodiments of the present utility model, Bo Yong mechanisms can also use compressed air purging formula, using difference
Male and female silkworm chrysalis is separately blowed to respective collection device by the nozzle in direction.
Referring to Fig. 8, in male and female silkworm chrysalis gravity electronic method of the present utility model intelligence separator, intelligence control system includes
Processor, electric pressure converter, button and light-emitting diode display.Processor receives the parameter value and gravity sensor of key-press input
Weighing value, compare treatment after, send command adapted thereto to silkworm chrysalis piece-rate system (Chuan Yong mechanisms and Bo Yong mechanisms) so that pass
Pupa mechanism and Bo Yong mechanisms automatic running.Fig. 9 shows a physical circuit schematic diagram of intelligence control system.
The course of work of male and female silkworm chrysalis gravity electronic method intelligence separator of the present utility model is detailed below.
Silkworm chrysalis falls into pupa groove 2 in Chu Yong areas 11, by limit pupa baffle plate 12 limit can only simple grain cocoon enter pupa groove 2, warp
Pass pupa band 1 to transmit, silkworm chrysalis is dropped on weighing pan 7；Gravity sensor 8 obtains the weight of silkworm chrysalis (piezoelectricity) signal；Through intelligence
Energy intelligence system is amplified, and (such as ＜ 1.20g are Xiong Yongqu, and ＞ 1.30g are female pupa with default female, male silkworm chrysalis weight section
Area, 1.20g -1.30g's is small female big male hybrid region) compare, judge what section this silkworm chrysalis belongs to according to comparison result,
And turn on corresponding solenoid circuit through intelligence control system, such as certain pupa weight 1.16g, its ＜ 1.20g Ying Ruxiongyong area,
The circuit turn-on of electromagnet counterclockwise 33 is inhaled iron plate 31 and is attracted counterclockwise and will dial the band of pupa bar 30 by intelligence control system
It is dynamic to be rotated by 90 °, to dial and dial 90 ° of counterclockwise rotates from right to left of pupa broom 13 on pupa bar 30, and the silkworm chrysalis on weighing pan 7 is scraped
15 are exported to the male pupa on the left side；Certain pupa weight 1.35g, its ＞ 1.30g Ying Ruciyong area, intelligent control system is by electromagnetism clockwise
The circuit turn-on of iron 32, inhales iron plate 31 and is attracted clockwise and group pupa bar 30 is rotated into 90 °, dials dialling on pupa bar 30
Pupa broom 13 is rotated clockwise 90 ° from left to right, and the silkworm chrysalis on weighing pan 7 is scraped into the female pupa outlet 4 to the right.
Claims (10)
1. a kind of male and female silkworm chrysalis gravity electronic method intelligence separator, it is characterised in that including：
Chu Yong areas, for receiving silkworm chrysalis to be sorted；
Chuan Yong mechanisms, with the adjoining of Chu Yong areas, comprising pupa band is passed, pass and multiple pupa grooves and convex every pupa are arranged at intervals with pupa band, often
Individual pupa groove is only capable of accommodating simple grain silkworm chrysalis；
Weighing mechanism, is arranged on the end of Chuan Yong mechanisms, including weighing pan and gravity sensor；
Bo Yong mechanisms, allocate to corresponding collection device for the silkworm chrysalis after having been weighed on weighing pan automatically；And
Intelligence control system, for controlling the coordinated operation between Chuan Yong mechanisms, Weighing mechanism and Bo Yong mechanisms.
2. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that Chuan Yong mechanisms include
A plurality of biography pupa band, a plurality of biography pupa band is distributed in around Chu Yong areas into disc.
3. male and female silkworm chrysalis gravity electronic method according to claim 2 intelligence separator, it is characterised in that Chuan Yong mechanisms also wrap
Motor, active powershift gear, transfer powershift gear are included, pupa band driving wheel is passed, pass pupa band driven front wheels and is passed pupa band driven rear wheel；Wherein
Active powershift gear is fixed on motor shaft, and multiple transfer powershift gears are distributed in around active powershift gear and engage, each point
Power gear is connected by axostylus axostyle with respective biography pupa band driving wheel respectively, and biography pupa band driving wheel drives and passes pupa band driven front wheels,
Pupa band is passed to be arranged on biography pupa band driven front wheels and pass on pupa band driven rear wheel.
4. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that Chuan Yong mechanisms include
A plurality of biography pupa band, a plurality of biography pupa band is parallel to be distributed in around Chu Yong areas.
5. male and female silkworm chrysalis gravity electronic method according to claim 4 intelligence separator, it is characterised in that Chuan Yong mechanisms also wrap
Motor, main power shaft are included, pupa band driving wheel is passed, pass pupa band driven front wheels and is passed pupa band driven rear wheel；Main power shaft and motor shaft
Between by shaft coupling connect, multiple pass pupas band driving wheels be arranged on main power shaft, pass pupa band driving wheel drive pass pupa band from
Dynamic front-wheel, passes pupa band and is arranged on biography pupa band driven front wheels and passes on pupa band driven rear wheel.
6. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that in neighbouring Chu Yong areas
Biography pupa band top be provided with limit pupa baffle plate.
7. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that Bo Yong mechanisms use
Magnetic-type group of pupa broom structure or compressed air purging formula.
8. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that weighing pan is provided with
Female pupa outlet and male pupa outlet.
9. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that weighing pan lower section sets
Wing drop mechanism is equipped with, the silkworm chrysalis after weighing is slipped to subordinate's sorting mechanism or receipts by wing drop mechanism from weighing pan
Acquisition means.
10. male and female silkworm chrysalis gravity electronic method according to claim 1 intelligence separator, it is characterised in that gravity sensor
Precision be less than 0.01 gram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268034.XU CN206229727U (en) | 2016-11-23 | 2016-11-23 | Male and female silkworm chrysalis gravity electronic method intelligence separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621268034.XU CN206229727U (en) | 2016-11-23 | 2016-11-23 | Male and female silkworm chrysalis gravity electronic method intelligence separator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206229727U true CN206229727U (en) | 2017-06-09 |
Family
ID=58981157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621268034.XU Expired - Fee Related CN206229727U (en) | 2016-11-23 | 2016-11-23 | Male and female silkworm chrysalis gravity electronic method intelligence separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206229727U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391501A (en) * | 2016-11-23 | 2017-02-15 | 四川省农业科学院蚕业研究所 | Gravity electronic-method intelligent sorting machine for female and male silkworm pupae |
| CN110899146A (en) * | 2019-04-25 | 2020-03-24 | 华南农业大学 | Silkworm chrysalis automatic sorting device in cocoon |
-
2016
- 2016-11-23 CN CN201621268034.XU patent/CN206229727U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106391501A (en) * | 2016-11-23 | 2017-02-15 | 四川省农业科学院蚕业研究所 | Gravity electronic-method intelligent sorting machine for female and male silkworm pupae |
| CN106391501B (en) * | 2016-11-23 | 2018-11-16 | 四川省农业科学院蚕业研究所 | Male and female silkworm chrysalis gravity electronic method intelligence sorting machine |
| CN110899146A (en) * | 2019-04-25 | 2020-03-24 | 华南农业大学 | Silkworm chrysalis automatic sorting device in cocoon |
| CN110899146B (en) * | 2019-04-25 | 2024-04-09 | 华南农业大学 | Automatic silkworm chrysalis sorting device in cocoons |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20170609 Termination date: 20181123 |