CN212284419U - Inclined plane type variable buoyancy seed sorting machine - Google Patents
Inclined plane type variable buoyancy seed sorting machine Download PDFInfo
- Publication number
- CN212284419U CN212284419U CN202021749766.7U CN202021749766U CN212284419U CN 212284419 U CN212284419 U CN 212284419U CN 202021749766 U CN202021749766 U CN 202021749766U CN 212284419 U CN212284419 U CN 212284419U
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- seed
- spiral
- flow guide
- grate
- foam
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- 238000005187 foaming Methods 0.000 claims abstract description 14
- 230000005484 gravity Effects 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 abstract description 36
- 239000007788 liquid Substances 0.000 abstract description 14
- 239000008187 granular material Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 239000000243 solution Substances 0.000 description 14
- 239000002253 acid Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229920006351 engineering plastic Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 2
- -1 hydrogen ions Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- WGKMWBIFNQLOKM-UHFFFAOYSA-N [O].[Cl] Chemical compound [O].[Cl] WGKMWBIFNQLOKM-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012811 non-conductive material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model provides a slope formula becomes buoyancy seed selection machine, the utility model discloses a jar body, locate jar left feeding hopper in body upper portion, inclined plane water conservancy diversion bars module, the foaming electrode group, kind in fact promote the spiral comb, light kind promotes spiral comb, positive pole gas collecting channel, negative pole gas collecting channel, locate the blowoff valve, proportion sensor and the controller of jar body bottom. The utility model discloses utilize the effect guide seed granule of buoyancy and step inclined plane guide grid to transport in salt bath liquid, the proportion change that the electrolysis that utilizes low pressure direct current produces changes salt bath liquid realizes the layering to the seed granule that the proportion is different to utilize the spiral to comb hoisting mechanism seed granule waterlogging caused by excessive rainfall output after will sorting, the utility model has the advantages of seed proportion selection uniformity is good, degree of automation is high.
Description
The technical field is as follows:
the utility model belongs to the agricultural tool field, concretely relates to inclined plane formula becomes buoyancy seed selection machine.
Background art:
in the field of agricultural production, the seeds of crops have a decisive role in increasing the yield of crops, and particularly in the seed selection process of various crops such as rice, corn, grains and the like, dense and full grains are usually selected as seeds. At present, the precise selection of the crop seeds usually adopts a buoyancy seed selection technology, the principle of the technology is that salt bath liquid with a specific gravity slightly larger than that of the seeds is prepared in advance and is contained in a container, the seed particles to be selected are immersed in salt bath liquid, and the seed particles to be selected are settled or floated to complete layering due to different buoyancy forces generated by the salt bath liquid on the seed particles with different densities and plumpnesses in the salt bath liquid, so that the dense and plumpy seed particles with the larger specific gravity are selected. In practical application, because salt in the salt bath solution is continuously taken away by the seed particles and soluble substances stained on the surfaces of the seed particles are continuously infiltrated into the salt bath solution, the specific gravity of the salt bath solution is inevitably changed, so that the specific gravity of the salt bath solution needs to be measured by a specific gravity meter at times and salt is added at times to stabilize the specific gravity of the salt bath solution, and the method has poor seed selection consistency and complicated operation.
The existing buoyancy seed selection technology in the field has obvious defects, so that a new buoyancy seed selection technology which can conveniently realize stable control of the specific gravity of salt bath liquid at low cost and obtain the specific gravity consistency of the salt bath liquid is needed in the market.
The utility model has the following contents:
in order to solve the technical problem, the utility model relates to an inclined plane formula becomes buoyancy seed selection machine, include: the device comprises a tank body, a feeding hopper, an anode gas collecting hood and a cathode gas collecting hood are arranged on the top surface of the tank body, an inclined plane flow guide grid module, a foaming electrode group, a seed raising spiral grate, a light seed raising spiral grate, an emptying valve and a specific gravity sensor at the bottom of the tank body and a controller on the side surface of the tank body are arranged in the tank body;
the inclined plane flow guide grid module comprises an upper flow guide inclined plate, a lower flow guide inclined plate, a seed collecting groove and a light seed collecting groove, wherein one end of the upper flow guide inclined plate is of a dense grid type structure capable of blocking seed particles from passing through, the middle-lower position of the upper flow guide inclined plate is connected with one end of the lower flow guide inclined plate, the seed collecting groove is arranged at the lower left corner of the tank body and is smoothly connected with the lower end of the lower flow guide inclined plate, and the light seed collecting groove is arranged at the lower right corner of the tank body and is smoothly connected with the lower end of the upper flow guide inclined plate;
the foam-making electrode group comprises a foam-making anode and a foam-making cathode, the foam-making anode is laid on the upper side of the lower flow guide inclined plate of the inclined plane flow guide grid module in parallel, and the foam-making cathode is arranged on the upper part of the right lower end of the lower flow guide inclined plate in the vertical direction; the foam-making anode and the foam-making cathode penetrate through the wall of the tank body through an insulating sleeve and are respectively connected with the positive pole and the negative pole of a 12-24V direct-current power supply.
The anode gas-collecting hood and the cathode gas-collecting hood are arranged at the top of the tank body and are respectively positioned above the foam-making anode and the foam-making cathode, the anode gas-collecting hood and the cathode gas-collecting hood are isolated from the middle by an explosion-proof clapboard and are respectively communicated with an explosion-proof exhaust system by an exhaust pipe, the anode gas-collecting hood and the cathode gas-collecting hood are communicated with the explosion-proof exhaust system,
the specific gravity sensors are divided into two groups and are respectively arranged above an upper flow guide inclined plate and a lower flow guide inclined plate of the inclined plane flow guide grid module;
the foam-making anode, the foam-making cathode, the spiral driving motor, the second spiral driving motor and the specific gravity sensor are respectively and directly or indirectly connected with the controller.
According to the further technical scheme, the seed lifting spiral grate comprises a spiral driving motor, a spiral grate cover, a spiral grate, a seed discharging hopper and a seed collecting box, wherein the spiral grate cover is arranged above the seed collecting tank, the upper end and the lower end of the spiral grate cover adopt a dense grid type structure capable of blocking seed particles from passing through, the top end of the spiral grate cover is provided with the spiral driving motor, the spiral grate is arranged inside the spiral grate cover, the top end of the spiral grate cover is connected with the spiral driving motor, the spiral grate adopts a dense grid type rotor wing structure capable of blocking the seed particles from passing through, the side face of the upper end of the spiral grate cover is provided with the seed discharging hopper, and the seed collecting box is arranged right below the seed discharging hopper;
the structure of the light seed lifting spiral grate is the same as that of the real seed lifting spiral grate, the second spiral driving motor, the second spiral grate cover, the second spiral grate, the light seed discharging hopper and the light seed collecting box are arranged, and the real seed lifting spiral grate and the light seed lifting spiral grate are arranged on the left side and the right side in the tank body.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses utilize the effect guide seed granule of buoyancy and step inclined plane guide grid to transport in salt bath liquid, the proportion change that the electrolysis that utilizes low pressure direct current produces changes salt bath liquid realizes the layering to the seed granule that the proportion is different to utilize spiral to comb hoist mechanism seed granule waterlogging caused by excessive rainfall output after will sorting, the utility model has the advantages of the proportion control uniformity of salt bath liquid is good, degree of automation is high, can improve the uniformity that seed proportion selected, realizes the automation of seed flotation.
Description of the drawings:
the accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the structure of an embodiment of the present invention
FIG. 2 is a detail view of a portion of the part 4 of FIG. 1
In the figure: a tank body-1; a feeding hopper-2; an inclined plane diversion gate module-3; a foam-making electrode assembly-4; seed raising spiral grate-5; light seed lifting spiral grate-6; an anode gas collecting hood-7; a cathode gas-collecting hood-8; an emptying valve-9 and a specific gravity sensor-10; a controller-11; an upper flow guiding inclined plate-31; a lower flow guiding inclined plate-32; seed collecting tank-310; a light seed collecting tank-320; a foam-making anode 41; a blister cathode 42; an explosion proof barrier 70; a screw driving motor 51; a spiral grate cover 52; a spiral grate 53; a seed discharge hopper 54; a seed collection box 55; a second screw driving motor 61; a second grate cover 62; a second spiral grate 63; a light seed discharging hopper 64; a light seed collection box 65; salt bath 1000; a wool to be selected 1001; seed particles 1002; light particles 1003.
The specific implementation mode is as follows:
as shown in the figure, the inclined plane type variable buoyancy seed sorting machine comprises: the device comprises a tank body 1, a feeding hopper 2, an anode gas collecting hood 7 and a cathode gas collecting hood 8 which are arranged on the top surface of the tank body 1, a slope flow guide grid module 3, a foam-making electrode group 4, a seed raising spiral grate 5, a light seed raising spiral grate 6, an emptying valve 9 and a specific gravity sensor 10 which are arranged at the bottom of the tank body 1, and a controller 11 is arranged on the side surface of the tank body 1;
the inclined plane flow guide grid module 3 comprises an upper flow guide inclined plate 31, a lower flow guide inclined plate 32, a seed flow collecting groove 310 and a light seed flow collecting groove 320, one end of the upper flow guide inclined plate 31 is of a dense grid type structure capable of blocking seed particles from passing through, and is supported on the upper portion in the tank body 1 in a left-high and right-low layout manner, the middle-lower position of the upper flow guide inclined plate 31 is connected with one end of the lower flow guide inclined plate 32 and is supported on the lower portion in the tank body 1 in a right-high and left-low layout manner, the seed flow collecting groove 310 is arranged at the lower left corner of the tank body 1 and is smoothly connected with the lower end of the lower flow guide inclined plate 32, and the light seed flow collecting groove 320 is arranged at the lower right corner of the;
the seed raising spiral grate 5 comprises a spiral driving motor 51, a spiral grate cover 52, a spiral grate 53, a seed discharging hopper 54 and a seed collecting box 55, wherein the spiral grate cover 52 is arranged above the seed collecting tank 310, the upper end and the lower end of the spiral grate cover 52 adopt a dense grid type structure capable of blocking seed particles from passing through, the top end of the spiral grate cover 52 is provided with the spiral driving motor 51, the spiral grate 53 is arranged in the spiral grate 52, the top end of the spiral grate 53 is connected with the spiral driving motor 51, the spiral grate 53 adopts a dense grid type rotor wing structure capable of blocking seed particles from passing through, the side surface of the upper end of the spiral grate cover 52 is provided with the seed discharging hopper 54, and the seed collecting box 55 is arranged under the seed discharging hopper 54;
the light seed lifting spiral grate 6 has the same structure as the real seed lifting spiral grate 5, the second spiral driving motor 61, the second spiral grate cover 62, the second spiral grate 63, the light seed discharging hopper 64 and the light seed collecting box 65, and the real seed lifting spiral grate 5 and the light seed lifting spiral grate 6 are arranged at the left side and the right side in the tank body 1.
The bubble-making electrode group 4 consists of a bubble-making anode 41 and a bubble-making cathode 42, wherein the bubble-making anode 41 and the bubble-making cathode 42 adopt a grid-shaped structure made of metal with ionization inertia; the foam-making anode 41 is laid on the upper side of the lower diversion inclined plate 32 of the inclined diversion grid module 3 in parallel, and the foam-making cathode 42 is arranged on the upper part of the right lower end of the lower diversion inclined plate 32 in the vertical direction; the foam-making anode 41 and the foam-making cathode 42 both penetrate through the wall of the tank body 1 through insulating sleeves and are respectively connected with the positive pole and the negative pole of a 12-24V direct current power supply.
The anode gas collecting hood 7 and the cathode gas collecting hood 8 are arranged at the top of the tank body 1 and are respectively positioned above the foam-making anode 41 and the foam-making cathode 42, and the anode gas collecting hood and the cathode gas collecting hood are separated by an explosion-proof clapboard 70 from the middle and are respectively communicated with an explosion-proof exhaust system by an exhaust pipe.
The specific gravity sensors 10 are divided into two groups and are respectively arranged above the upper flow guide inclined plate 31 and the lower flow guide inclined plate 32 of the inclined plane flow guide grid module 3;
the foaming anode 41, the foaming cathode 42, the screw driving motor 51, the second screw driving motor 61 and the specific gravity sensor 10 are respectively connected with the controller 11 directly or indirectly.
In this embodiment, the tank body 1, the feeding hopper 2, the anode gas collecting hood 7 and the cathode gas collecting hood 8 are made of non-conductive materials such as engineering plastics resistant to acid, alkali and salt corrosion; the inclined plane guide grid module 3 is a customized piece made of acid and alkali corrosion resistant materials; the bubble-making electrode group 4 is made of metal with ionization inertia; the seed lifting spiral grate 5 and the light seed lifting spiral grate 6 are made of engineering plastics resistant to acid, alkali and salt corrosion except for the motor; the emptying valve 9 is a standard part or a fixed part made of engineering plastics and rubber materials; the specific gravity sensor 10 and the controller 11 adopt standard parts or fixed parts; and other parts adopt standard parts or fixed parts which are resistant to acid, alkali and salt corrosion.
The working principle is as follows: in the production application of the embodiment, the salt bath 1000 for adding the industrial salt is injected into the tank body 1 in advance, the specific gravity is adjusted based on the fact that most seed particles can float in the salt bath solution, the water flow generated by the seed raising spiral grate 5 starting to rotate drives the salt bath solution 1000 near the bottom of the seed raising spiral grate to collect and flow into the seed collecting groove 310, the water flow generated by the light seed raising spiral grate 6 starting to rotate drives the salt bath solution 1000 near the bottom of the light seed raising spiral grate to collect and flow into the light seed collecting groove 320, the salt bath solution raised by the seed raising spiral grate 5 and the light seed raising spiral grate 6 respectively flows into the tank body 1 from the dense grate on the upper part of the spiral grate cover, meanwhile, the water flow ascending circulation generated by the spiral grate 5 and the light seed lifting spiral grate 6 causes the salt bath solution at the middle upper part of the tank body 1 to flow from the upper left to the lower right in the drawing 1, and the salt bath solution at the lower part of the tank body 1 to flow from the middle to the lower left in the drawing 1; meanwhile, low-voltage direct current (12V) is applied to the foaming electrode group 4, cations (hydrogen ions) and anions (hydrogen cation ions and chloride ions) in the salt bath respectively generate electron exchange on the foaming cathode 42 and the foaming anode 41 to generate chlorine-oxygen gas and hydrogen gas, the gases overflow from the water in the form of bubbles and are respectively discharged by the anode gas collecting hood 7 and the cathode gas collecting hood 8, and the explosion-proof partition plate 70 is used for preventing gases generated by the foaming cathode 42 and the foaming anode 41 from mixing and being inflammable; the bubbles generated by electrolysis rise and overflow in the salt bath 1000 continuously, and the specific gravity of the salt bath solution in the region where the bubbles float through is reduced, so that the specific gravity signal of the salt bath solution 1000 in the region where the specific gravity sensor 10 is located is used for adjusting the foaming electrode group 4 by the controller 11, and the strength of the bubbles generated on the foaming anode 41 and the foaming cathode 42 is controlled by the passing direct current so as to stabilize the specific gravity of the salt bath solution in the region where the specific gravity sensor 10 is located.
When the wool 1001 to be selected is thrown in from the feeding hopper 2, the seed particles float from the upper left to the lower right in fig. 1 along with the liquid flow on the upper part of the tank body 1, when the seed particles pass through the grid area of the upper diversion inclined plate 31, the buoyancy generated by the salt solution with reduced specific gravity due to the rising bubbles generated by electrolysis in the area is not enough to support the seed particles with larger specific gravity, so that the seed particles 1002 sink on the lower diversion inclined plate 32 through the grid of the diversion inclined plate 31 and are collected into the seed collecting tank 310 along with the liquid flow, and finally are lifted by the spiral grid 53 of the seed lifting spiral grid 5 and are inclined in the seed collecting tank 55 through the seed discharging hopper 54.
In the process, the light seed particles 1003 with poor compactness and fullness in the selected wool 1001 are still supported by the buoyancy of the salt bath liquid and continuously flow to the light seed collecting tank 320 at the right lower part of the diversion inclined plate 31, and finally are lifted by the second spiral grate 63 of the light seed lifting spiral grate 6 and are poured into the light seed collecting box 65 through the light seed discharging hopper 64.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (2)
1. The utility model provides a slope formula becomes buoyancy seed selection machine which characterized in that includes: the device comprises a tank body, a feeding hopper, an anode gas collecting hood and a cathode gas collecting hood which are arranged on the top surface of the tank body, an inclined plane flow guide grid module, a foaming electrode group, a seed raising spiral grate, a light seed raising spiral grate, an emptying valve and a specific gravity sensor which are arranged at the bottom of the tank body, and a controller on the side surface of the tank body, wherein the inclined plane flow guide grid module, the foaming electrode group, the seed raising spiral;
the inclined plane flow guide grid module comprises an upper flow guide inclined plate, a lower flow guide inclined plate, a seed collecting groove and a light seed collecting groove, wherein one end of the upper flow guide inclined plate is of a dense grid type structure capable of blocking seed particles from passing through, the middle-lower position of the upper flow guide inclined plate is connected with one end of the lower flow guide inclined plate, the seed collecting groove is arranged at the lower left corner of the tank body and is smoothly connected with the lower end of the lower flow guide inclined plate, and the light seed collecting groove is arranged at the lower right corner of the tank body and is smoothly connected with the lower end of the upper flow guide inclined plate;
the foam-making electrode group comprises a foam-making anode and a foam-making cathode, the foam-making anode is laid on the upper side of the lower flow guide inclined plate of the inclined plane flow guide grid module in parallel, and the foam-making cathode is arranged on the upper part of the right lower end of the lower flow guide inclined plate in the vertical direction; the foam-making anode and the foam-making cathode penetrate through the wall of the tank body through an insulating sleeve and are respectively connected with the positive pole and the negative pole of a 12-24V direct-current power supply;
the anode gas-collecting hood and the cathode gas-collecting hood are arranged at the top of the tank body and are respectively positioned above the foam-making anode and the foam-making cathode, the anode gas-collecting hood and the cathode gas-collecting hood are isolated from the middle by an explosion-proof clapboard and are respectively communicated with an explosion-proof exhaust system by exhaust pipes, and the anode gas-collecting hood and the cathode gas-collecting hood are communicated with the explosion-proof exhaust system;
the specific gravity sensors are divided into two groups and are respectively arranged above an upper flow guide inclined plate and a lower flow guide inclined plate of the inclined plane flow guide grid module;
the foam-making anode, the foam-making cathode, the spiral driving motor, the second spiral driving motor and the specific gravity sensor are respectively and directly or indirectly connected with the controller.
2. The inclined plane type variable buoyancy seed sorting machine according to claim 1, wherein the seed lifting spiral grate comprises a spiral driving motor, a spiral grate cover, a spiral grate, a seed discharging hopper and a seed collecting box, the spiral grate cover is arranged above the seed collecting tank, the upper end and the lower end of the spiral grate cover adopt a dense grate type structure capable of blocking seed particles from passing through, the top end of the spiral grate cover is provided with the spiral driving motor, the spiral grate is arranged inside the spiral grate cover, the top end of the spiral grate is connected with the spiral driving motor, the spiral grate adopts a dense grate type rotor wing structure capable of blocking seed particles from passing through, the upper end side of the spiral grate cover is provided with the seed discharging hopper, and the seed collecting box is arranged right below the seed discharging hopper;
the structure of the light seed lifting spiral grate is the same as that of the real seed lifting spiral grate, the second spiral driving motor, the second spiral grate cover, the second spiral grate, the light seed discharging hopper and the light seed collecting box are arranged, and the real seed lifting spiral grate and the light seed lifting spiral grate are arranged on the left side and the right side in the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021749766.7U CN212284419U (en) | 2020-08-20 | 2020-08-20 | Inclined plane type variable buoyancy seed sorting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021749766.7U CN212284419U (en) | 2020-08-20 | 2020-08-20 | Inclined plane type variable buoyancy seed sorting machine |
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| Publication Number | Publication Date |
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| CN212284419U true CN212284419U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021749766.7U Expired - Fee Related CN212284419U (en) | 2020-08-20 | 2020-08-20 | Inclined plane type variable buoyancy seed sorting machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905916A (en) * | 2020-08-20 | 2020-11-10 | 南京工业职业技术学院 | Inclined plane type variable buoyancy seed sorting machine |
-
2020
- 2020-08-20 CN CN202021749766.7U patent/CN212284419U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111905916A (en) * | 2020-08-20 | 2020-11-10 | 南京工业职业技术学院 | Inclined plane type variable buoyancy seed sorting machine |
| CN111905916B (en) * | 2020-08-20 | 2024-02-09 | 南京工业职业技术学院 | Inclined plane type variable buoyancy seed selector |
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Granted publication date: 20210105 |