CN115846211B - Hierarchical screening installation of soybean - Google Patents
Hierarchical screening installation of soybean Download PDFInfo
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- CN115846211B CN115846211B CN202310143134.8A CN202310143134A CN115846211B CN 115846211 B CN115846211 B CN 115846211B CN 202310143134 A CN202310143134 A CN 202310143134A CN 115846211 B CN115846211 B CN 115846211B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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Abstract
The invention relates to the technical field of soybean screening, and discloses soybean classifying and screening equipment which comprises a bottom plate, a secondary screening mechanism and a primary screening mechanism; the primary screening mechanism comprises first support plates arranged on two sides of a bottom plate, a rotatable main shaft is arranged on one side, far away from the bottom plate, of the first support plates, a clamping block is arranged at one end, close to the center of the bottom plate, of the main shaft, the clamping block is detachably connected with a limiting block, the limiting block is fixedly connected with the end part of a supporting column, a fixed seat is arranged on the right side of the supporting column, an L-shaped baffle rod is arranged on the outer side of the fixed seat, and an end cover assembly matched with the L-shaped baffle rod is arranged on one side, far away from the fixed seat, of the supporting column; the secondary screening mechanism is arranged on one side, close to the bottom plate, of the first supporting plate and comprises a screen frame. The invention is suitable for soybean classifying and screening equipment, and the first rotating shaft drives the screen frame to shake and the L-shaped baffle rod to rotate, so that soybean can be screened into two particle sizes by the secondary screening mechanism after impurity removal by the primary screening mechanism.
Description
Technical Field
The invention relates to the technical field of soybean screening, in particular to soybean classifying and screening equipment.
Background
During the production or trade of soybeans, it is often necessary to screen the soybeans, for example, to sort the soybeans according to their size, color, integrity, etc., respectively, for fine preparation and trade of soybean products. A more common classification is based on the size of the soybean particle size.
When the common sieve plate is used for sieving soybeans, the soybeans and impurities can be sieved, or the sieve plate can only be used for carrying out secondary sieving on some soybeans subjected to primary sieving to realize differentiation of different particle sizes, when the soybeans need to be sieved according to the particle sizes and impurities are found to be mixed in the interior, the impurities are firstly removed through the sieve plate, the soybeans subjected to impurity removal are graded through the sieve plate, and the working efficiency can be influenced by repeated sieving, so that the soybean sieving device capable of realizing grading treatment is required to be designed.
Disclosure of Invention
The invention provides soybean classifying and screening equipment which solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a soybean classifying and screening device comprises a bottom plate, a secondary screening mechanism and a primary screening mechanism;
the primary screening mechanism comprises first support plates arranged on two sides of a bottom plate, a rotatable main shaft is arranged on one side, far away from the bottom plate, of the first support plates, a clamping block is arranged at one end, close to the center of the bottom plate, of the main shaft, the clamping block is detachably connected with a limiting block, the limiting block is fixedly connected with the end part of a supporting column, a fixed seat is arranged on the right side of the supporting column, an L-shaped baffle rod is arranged on the outer side of the fixed seat, and an end cover assembly matched with the L-shaped baffle rod is arranged on one side, far away from the fixed seat, of the supporting column;
the secondary screening mechanism is arranged on one side, close to the bottom plate, of the first supporting plate and comprises rotating bases which are connected with the first supporting plate in a rotating mode, two rotating bases are close to the left end and the right end of one end of the center of the bottom plate and fixedly connected with a screen frame, the right end of the bottom plate is provided with a second supporting plate, the middle of the second supporting plate is rotationally connected with a first rotating shaft, a driving gear is arranged in the first rotating shaft, one side, close to the bottom plate, of the second supporting plate is rotationally connected with a third rotating shaft, the third rotating shaft is fixedly connected with a second driven gear matched with the driving gear, a rotating disc is arranged at the end portion of the third rotating shaft, the outer edge of the rotating disc is rotationally connected with the end portion of a rotating rod, and the middle of the rotating rod is slidingly connected with the rotating base.
As a preferable technical scheme of the invention, a stud is arranged on the left side of the support column, the end cover assembly is sleeved outside the stud, and a locking nut matched with the end cover assembly is connected on the stud in a threaded manner.
As a preferable technical scheme of the invention, the end cover assembly comprises a sliding seat sleeved outside the stud, a connecting rod is arranged on the outer side of the sliding seat, the end part of the connecting rod is connected with a fixed ring, a yielding hole matched with an L-shaped baffle rod is arranged on the fixed ring, and a stop block for limiting the movement of the fixed ring is arranged on the L-shaped baffle rod.
As a preferable technical scheme of the invention, one side of the driving gear is connected with a first driven gear in a meshed manner, the first driven gear is fixedly connected with a second rotating shaft, the axial lead of the second rotating shaft is collinear with the axial lead of the main shaft, the left end of the second rotating shaft is fixedly connected with the right end of the right main shaft, and the middle part of the second rotating shaft is provided with a screening fan.
As a preferable technical scheme of the invention, the number of teeth of the driving gear is larger than that of the first driven gear.
As a preferable technical scheme of the invention, the first support plate far away from the second support plate is connected with the main shaft in a sliding way, guide rods which are connected with the first support plate in a sliding way are arranged on the upper side and the lower side of the main shaft, one end of each guide rod far away from the center of the bottom plate is fixedly connected with a push plate, the middle part of each push plate is rotationally connected with the end part of the main shaft, and a spring for driving the push plate to move towards the center direction of the bottom plate is arranged between each push plate and the first support plate.
As a preferable technical scheme of the invention, a discharge groove is arranged in the middle of the screen frame, and a screening hole is arranged at the bottom of the discharge groove.
The invention has the following advantages:
the invention is suitable for soybean classified screening equipment, and the first rotating shaft drives the screen frame to shake and the L-shaped baffle rod to rotate, so that soybeans can be screened into two particle sizes by the secondary screening mechanism after impurity removal is realized by the primary screening mechanism, repeated loading treatment is avoided, and the dried leaves are left in a container formed by the L-shaped baffle rod and are directly poured out after screening, so that the whole equipment is more convenient to clean.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a soybean classifying screening apparatus.
Fig. 2 is a front view of a soybean classifying screen apparatus.
Fig. 3 is a schematic structural view of a secondary screening mechanism in a soybean classifying screening apparatus.
Fig. 4 is an elevation view of a secondary screening mechanism in a soybean classifying screening apparatus.
Fig. 5 is a schematic structural view of a preliminary screening mechanism in a soybean classifying screening apparatus.
Fig. 6 is a schematic structural view of the cooperation of a driving gear and a first driven gear in a soybean classifying and screening apparatus.
Fig. 7 is a schematic structural view of an end cap assembly in a soybean classifying screen apparatus.
Fig. 8 is a schematic view of the structure of an L-shaped lever in a soybean classifying screening apparatus.
In the figure: 1. a bottom plate; 2. a secondary screening mechanism; 3. a primary screening mechanism; 4. a third rotating shaft; 5. a first support plate; 6. a rotating seat; 7. a screen frame; 8. a discharge groove; 9. screening holes; 10. a second support plate; 11. a second driven gear; 12. a rotating disc; 13. a rotating lever; 14. a push plate; 15. a guide rod; 16. a spring; 17. a main shaft; 18. a clamping block; 19. a rotating wheel; 20. a first rotating shaft; 21. a drive gear; 22. a first driven gear; 23. a second rotating shaft; 24. screening fans; 25. a top plate; 26. a limiting block; 27. a support column; 28. a stud; 29. a lock nut; 30. a fixing seat; 31. an L-shaped stop lever; 32. a sliding seat; 33. a connecting rod; 34. a fixing ring; 35. a relief hole; 36. a stop block; 37. an end cap assembly.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment, referring to fig. 1-8, a soybean classifying screening apparatus includes a base plate 1, a secondary screening mechanism 2, and a primary screening mechanism 3;
the primary screening mechanism 3 comprises a first supporting plate 5 vertically arranged on the left side and the right side of a bottom plate 1, a rotatable main shaft 17 is horizontally arranged above the first supporting plate 5, a clamping block 18 is arranged at one end, close to the center of the bottom plate 1, of the main shaft 17, the clamping block 18 is detachably connected with a limiting block 26, one side, close to the center of the bottom plate 1, of the clamping block 18 is provided with a limiting groove, the limiting block 26 is inserted into the limiting groove to realize the detachable connection of the clamping block 18 and the limiting block 26, and the limiting groove is polygonal, so that the limiting block 26 can synchronously rotate along with the clamping block 18, the limiting block 26 is fixedly connected with the end part of a supporting column 27, the supporting column 27 is horizontally arranged, the axis of the supporting column 27 is collinear with the axis of the main shaft 17, the right side of the supporting column 27 is provided with a fixed seat 30, the outer side of the fixed seat 30 is provided with an L-shaped blocking rod 31, the horizontal rod of the L-shaped blocking rod 31 extends leftwards and is parallel to the supporting column 27, and one side, far from the fixed seat 30 is provided with an end cover assembly 37 matched with the L-shaped blocking rod 31, the L-shaped blocking rod 31 forms a container with a surface clearance through the end cover assembly 37 and the L-shaped blocking rod 31, and the container can be screened in a container in a place;
the secondary screening mechanism 2 is arranged on one side, close to the bottom plate 1, of the first supporting plate 5 and comprises rotating bases 6 which are rotationally connected with the first supporting plate 5, two ends of the rotating bases 6, close to the center of the bottom plate 1, are fixedly connected with the left end and the right end of a screen frame 7, one side, close to the bottom plate 1, of the second supporting plate 10 is rotationally connected with a third rotating shaft 4, the third rotating shaft 4 is fixedly connected with a second driven gear 11 which is matched with a driving gear 21, the left end of the third rotating shaft 4 is provided with a rotating disc 12, the outer edge of the rotating disc 12 is rotationally connected with the end part of a rotating rod 13, and the middle part of the rotating rod 13 is slidingly connected with the rotating bases 6. The third rotating shaft 4 realizes synchronous rotation with the first rotating shaft 20 through the cooperation of the driving gear 21 and the second driven gear 11 which are in meshed connection, and the third rotating shaft 4 drives the rotating seat 6 to deflect back and forth through the rotating disc 12 and the rotating rod 13, so that the screen frame 7 can shake back and forth. The middle part of reel 7 is equipped with blowing groove 8, and blowing groove 8 is the top opening, can fall in blowing groove 8 after the soybean drops in the primary screening mechanism 3 of top, and the bottom of blowing groove 8 is equipped with screening hole 9, and the in-process that reel 7 rocked, the soybean of minor diameter can pass screening hole 9 and fall to on bottom plate 1 to divide into two particle diameters with the soybean through reel 7.
In one case of this embodiment, the stud 28 is disposed on the left side of the support column 27, the end cap assembly 37 is sleeved on the outside of the stud 28, the stud 28 is screwed with a lock nut 29 matched with the end cap assembly 37, and the diameter of the stud 28 is larger than the diagonal length of the stopper 26, so that the lock nut 29 can be screwed onto the stud 28 through the stopper 26. The end cover assembly 37 comprises a sliding seat 32 sleeved outside the stud 28, a connecting rod 33 is arranged on the outer side of the sliding seat 32, the end portion of the connecting rod 33 is connected with a fixed ring 34, the fixed ring 34 and the sliding seat 32 are two concentric rings, the concentric rings are connected through the connecting rod 33, gaps between the connecting rods 33 can pass through air flow, on one hand, the integral weight of the end cover assembly 37 can be reduced through a combined structure, the force required in the rotating process is smaller, on the other hand, gaps are reserved between the connecting rods 33, the air flow is enabled to be smoother in the process of moving from right to left, so that the L-shaped baffle 31 and inner materials of a container formed by the end cover assembly 37 can be blown up through the air flow, the materials can roll better in the inside, on the one hand, the screening effect can be improved in the rolling process, the soybeans meeting the particle size can fall off, on the other hand, the air flow can screen the soybeans, the dust attached to the surface of the soybeans can fall off, the effect of impurity removal is achieved, the yielding hole 35 matched with the L-shaped baffle 31 is arranged on the fixed ring 34, and the baffle 34 is provided with a baffle 36 limiting the baffle 31. The middle part of sliding seat 32 has set up the through-hole, and the through-hole can overlap on double-screw bolt 28, and dog 36 is the left side that sets up the horizontal pole at L shape shelves pole 31, can all set up dog 36 on every L shape shelves pole 31, perhaps only set up dog 36 on a few L shape shelves poles 31, but the position that dog 36 set up needs to be symmetrical with the axle center of support column 27 for the atress of end cover subassembly 37 is more stable, and after solid fixed ring 34 moves to the right side gu fixed ring 34 can be blocked by dog 36, and lock nut 29 and dog 36 can realize the clamping effect of end cover subassembly 37 this moment.
In one case of this embodiment, the right end of the bottom plate 1 is vertically provided with a second supporting plate 10, the middle part of the second supporting plate 10 is rotationally connected with a first rotating shaft 20, the right end of the first rotating shaft 20 is provided with a rotating wheel 19, the rotating wheel 19 can facilitate an operator to rotate the first rotating shaft 20, the left end of the first rotating shaft 20 is provided with a driving gear 21, a first driven gear 22 is connected above the driving gear 21 in a meshed manner, the first driven gear 22 is fixedly connected with a second rotating shaft 23, the axis line of the second rotating shaft 23 is collinear with the axis line of the main shaft 17, the left end of the second rotating shaft 23 is fixedly connected with the right end of the right main shaft 17, and the middle part of the second rotating shaft 23 is provided with a screening fan 24. The number of teeth of the driving gear 21 is larger than that of teeth of the first driven gear 22. The meshing transmission of the driving gear 21 and the first driven gear 22 achieves the acceleration effect, so that the main shaft 17 can quickly drive the support column 27 to rotate in the rotating process of the rotating wheel 19. And can set up roof 25 at the top of right side second backup pad 10, can play the effect of protection through roof 25, avoid the material to drop and sieve fan 24 contact.
In one case of this embodiment, the first support plate 5 on the left is slidably connected with the spindle 17, a through hole is provided on the first support plate 5, the spindle 17 on the left is connected with the through hole in a penetrating manner, the spindle 17 on the left moves left and right relative to the first support plate 5 on the left and rotates, guide rods 15 slidably connected with the first support plate 5 are provided on two sides of the spindle 17, one end of the guide rod 15 far away from the center of the bottom plate 1 is fixedly connected with a push plate 14, the middle part of the push plate 14 is rotatably connected with the end part of the spindle 17, and a spring 16 for driving the push plate 14 to move towards the center direction of the bottom plate 1 is provided between the push plate 14 and the first support plate 5. When the push plate 14 is pulled to the left, the spacing of the clamping blocks 18 on the left and right sides is separated, thereby facilitating the placement of the support column 27 between the two clamping blocks 18.
In the implementation process of the embodiment, the push plate 14 is pulled to the left, so that the push plate 14 drives the left spindle 17 and the clamping block 18 to move to the left, the left clamping block 18 is separated from the left limiting block 26, the supporting column 27 can be taken out from the primary screening mechanism 3, the locking nut 29 is screwed down, the end cover assembly 37 is taken down, soybean to be screened is added into a container formed by the L-shaped blocking rod 31 and the end cover assembly 37, after the soybean is filled in, the end cover assembly 37 is put in again, and the end cover assembly 37 is fixed through the locking nut 29, at the moment, the limiting block 26 at the right end of the supporting column 27 is inserted into the right clamping block 18, the push plate 14 is pulled to the left, the left clamping block 18 moves to the left, the supporting column 27 is rotated to a horizontal state, the push plate 14 is loosened, the push plate 14 moves to the right under the action of the spring 16, and the limiting block 26 is inserted into the clamping block 18, so that the whole filling operation is completed.
Rotating the rotating wheel 19, the rotating wheel 19 rotates the main shaft 17 and the sieving fan 24 through the driving gear 21 and the first driven gear 22 which are connected in a meshed manner, at the moment, the cylindrical container formed by the L-shaped baffle rod 31 and the end cover assembly 37 rotates, soybeans roll in the container, the soybeans can drop downwards through gaps of the L-shaped baffle rod 31 due to small particle sizes, some dead branches and fallen leaves can not fall into the L-shaped baffle rod 31 due to large volumes, and at the moment, the sieving fan 24 can generate left airflow, so that some dust can be blown out to the left side in the falling process of the soybeans, the cleaning effect is achieved, the first rotating shaft 20 drives the rotating disc 12 to rotate through the driving gear 21 and the second driven gear 11 which are connected in a meshed manner, the rotating disc 12 drives the rotating seat 6 to deflect forwards and backwards through the rotating rod 13, the soybeans in the sieve frame 7 are rocked, the soybeans with small particle sizes can fall onto the bottom plate 1 through the sieving holes 9, and the soybeans with large particle sizes can be enlarged into two sizes in the discharging grooves 8 of the sieve frame 7.
The invention is suitable for soybean classifying and screening equipment, and the first rotating shaft 20 drives the screen frame 7 to shake and the L-shaped baffle rod 31 to rotate, so that soybeans can be screened into two particle sizes by the secondary screening mechanism 2 after being subjected to impurity removal by the primary screening mechanism 3, the repeated charging treatment is avoided, and the dried leaves are left in a container formed by the L-shaped baffle rod 31, and can be directly poured out after screening is finished, so that the whole equipment is more convenient to clean.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (4)
1. The soybean classifying and screening device is characterized by comprising a bottom plate, a secondary screening mechanism and a primary screening mechanism;
the primary screening mechanism comprises first supporting plates arranged on two sides of a bottom plate, a rotatable main shaft is arranged on one side, far away from the bottom plate, of the first supporting plates, a clamping block is arranged at one end, close to the center of the bottom plate, of the main shaft, the clamping block is detachably connected with a limiting block, the limiting block is fixedly connected with the end part of a supporting column, a fixed seat is arranged on the right side of the supporting column, an L-shaped baffle rod is arranged on the outer side of the fixed seat, an end cover assembly matched with the L-shaped baffle rod is arranged on one side, far away from the fixed seat, of the supporting column, a stud is arranged on the left side of the supporting column, the end cover assembly is sleeved on the outer part of the stud, a locking nut matched with the end cover assembly is connected onto the stud in a threaded manner, the end cover assembly comprises a sliding seat sleeved on the outer part of the stud, a connecting rod is arranged on the outer side of the sliding seat, the end part of the connecting rod is connected with a fixed ring, a yielding hole matched with the L-shaped baffle rod is arranged on the fixed ring, and a stop block limiting the movement of the fixed ring is arranged on the L-shaped baffle rod;
the secondary screening mechanism is arranged on one side, close to the bottom plate, of the first supporting plate and comprises rotating bases which are rotationally connected with the first supporting plate, two rotating bases are fixedly connected with the left end and the right end of a screen frame at one end, close to the center of the bottom plate, of each rotating base, the right end of the bottom plate is provided with a second supporting plate, the middle part of each second supporting plate is rotationally connected with a first rotating shaft, a driving gear is arranged on the first rotating shaft, one side, close to the bottom plate, of each second supporting plate is rotationally connected with a third rotating shaft, the third rotating shaft is fixedly connected with a second driven gear matched with the driving gear, the end part of each third rotating shaft is provided with a rotating disc, the outer edge of each rotating disc is rotationally connected with the end part of each rotating rod, the middle part of each rotating rod is in sliding connection with the rotating base, one side of each driving gear is in meshed connection with a first driven gear, each first driven gear is fixedly connected with a second rotating shaft, the axis of each second rotating shaft is in coaxial line with the corresponding main shaft, the left end of each second rotating shaft is fixedly connected with the right end of each right side main shaft, and the middle part of each second rotating shaft is provided with a screening fan.
2. The soybean classification screening apparatus according to claim 1, wherein the number of teeth of the driving gear is greater than the number of teeth of the first driven gear.
3. The soybean classifying screen device according to claim 1, wherein the first support plate far away from the second support plate is slidably connected with the main shaft, guide rods slidably connected with the first support plate are arranged on the upper side and the lower side of the main shaft, one end of each guide rod far away from the center of the bottom plate is fixedly connected with the push plate, the middle part of the push plate is rotatably connected with the end part of the main shaft, and a spring for driving the push plate to move towards the center direction of the bottom plate is arranged between the push plate and the first support plate.
4. The soybean classifying and screening device according to claim 1, wherein a discharge groove is arranged in the middle of the screen frame, and screening holes are arranged at the bottom of the discharge groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310143134.8A CN115846211B (en) | 2023-02-21 | 2023-02-21 | Hierarchical screening installation of soybean |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310143134.8A CN115846211B (en) | 2023-02-21 | 2023-02-21 | Hierarchical screening installation of soybean |
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| CN115846211A CN115846211A (en) | 2023-03-28 |
| CN115846211B true CN115846211B (en) | 2023-06-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117483239B (en) * | 2024-01-02 | 2024-03-19 | 哈尔滨学院 | Hierarchical screening installation of soybean |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030037724A (en) * | 2001-11-05 | 2003-05-16 | 주식회사 포스코 | A rotary-type circular screen apparatus |
| CN207413784U (en) * | 2017-10-23 | 2018-05-29 | 湖北卧龙湾农业科技发展有限公司 | A kind of selecting rice grading plant |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332103A (en) * | 1992-12-31 | 1994-07-26 | Lyco Manufacturing, Inc. | Bean grader |
| JP3049473B2 (en) * | 1995-06-27 | 2000-06-05 | 高浜工業株式会社 | Sieving equipment for potter's earth |
| CN205949267U (en) * | 2016-03-03 | 2017-02-15 | 陈�全 | Coin automatic sorting machine |
| CN207013283U (en) * | 2017-05-09 | 2018-02-16 | 镇江市高等专科学校 | A kind of corn screen selecting device easy to use |
| CN209287733U (en) * | 2018-12-27 | 2019-08-23 | 巫山县生产力促进中心(巫山县科学技术信息中心) | A kind of mausoleum party automatic splinter screening device for screening |
| CN111632839A (en) * | 2020-05-27 | 2020-09-08 | 见治富 | Grit filter equipment for municipal works |
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- 2023-02-21 CN CN202310143134.8A patent/CN115846211B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030037724A (en) * | 2001-11-05 | 2003-05-16 | 주식회사 포스코 | A rotary-type circular screen apparatus |
| CN207413784U (en) * | 2017-10-23 | 2018-05-29 | 湖北卧龙湾农业科技发展有限公司 | A kind of selecting rice grading plant |
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