CN112354861A - Grading plant is used in screening of bright article nostoc sphaeroides particle diameter - Google Patents
Grading plant is used in screening of bright article nostoc sphaeroides particle diameter Download PDFInfo
- Publication number
- CN112354861A CN112354861A CN202011264464.5A CN202011264464A CN112354861A CN 112354861 A CN112354861 A CN 112354861A CN 202011264464 A CN202011264464 A CN 202011264464A CN 112354861 A CN112354861 A CN 112354861A
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- China
- Prior art keywords
- rod
- screening
- nostoc sphaeroides
- sieve tray
- particle size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/08—Screens rotating within their own plane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
- B07B1/343—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen with mechanical drive elements other than electromagnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention relates to the technical field of production and processing of nostoc sphaeroides, in particular to a grading device for screening the particle size of fresh nostoc sphaeroides, which comprises a material pouring device and a material pouring device, wherein one side of the material pouring device is provided with a screening device, and the grading device is characterized in that: the device of fascinating includes the base, base one side is equipped with the mount, be equipped with the air-blower on the mount, wind-force through the air-blower carries out preliminary separation to nostoc sphaeroides, the base side is equipped with the chamber wall, chamber wall top is equipped with the feed inlet, the feed inlet lower extreme is equipped with the discharge gate, the discharge gate lower extreme is equipped with the slide, quantity and speed that nostoc sphaeroides fell down can be controlled through the feed inlet, control base one side is equipped with first motor, the sieving mechanism includes the first body of rod, first body of rod lower extreme is equipped with the second body of rod, through the combined action of two screen clothes of three sieve trays, carry out effectual.
Description
Technical Field
The invention relates to the technical field of production and processing of nostoc sphaeroides, and particularly relates to a grading device for screening the particle size of a fresh nostoc sphaeroides.
Background
Nostoc sphaeroides, which is known as nostoc sphaeroides and is commonly called as Nostoc commune and Nostoc sphaeroides, is an aquatic freshwater blue-green algae, and the Nostoc sphaeroides contains abundant proteins and vitamins and is eaten as food and medicinal materials at home. Nostoc sphaeroids kutz has a history of eating for more than 1500 years in China, and has become an important economic crop due to potential nutritional and medicinal values.
The nostoc sphaeroides is full and shriveled, before being put into a warehouse, the nostoc sphaeroides needs to be removed, full nostoc sphaeroides is selected, the traditional nostoc sphaeroides screening method is to select a place with large wind, the nostoc sphaeroides falls down from a high place by the aid of the wind, the shriveled nostoc sphaeroides is blown away by the wind, and the nostoc sphaeroides falls down to be full nostoc sphaeroides.
Disclosure of Invention
The invention aims to provide a grading device for screening the particle size of fresh nostoc sphaeroides, which aims to solve the problems in the background technology.
In order to achieve the above object, the present invention provides a classifying device for screening particle sizes of fresh nostoc sphaeroides, comprising a material pouring device, a material pouring device and a screening device arranged on one side, wherein the material pouring device comprises a base, a fixing frame is arranged on one side of the base, an air blower is arranged on the fixing frame, a cavity wall is arranged on the side edge of the base, a feed inlet is arranged on the top of the cavity wall, a discharge outlet is arranged at the lower end of the feed inlet, a slide is arranged at the lower end of the discharge outlet, a first motor is arranged on one side of the base, the screening device comprises a first rod body, a second rod body is arranged at the lower end of the first rod body, a first motor is arranged at the lower end of a third rod body arranged at the bottom end of the second rod body, a first screen plate is arranged on the first rod body, the first rod body is in sleeve fit with the first screen plate, the third body of rod is equipped with the third screen tray, the third body of rod with the cooperation is cup jointed to the third screen tray, first screen cloth bottom is equipped with first screen cloth, second screen cloth bottom is equipped with the second screen cloth, the second screen cloth sieve mesh is less than first screen cloth sieve mesh.
As a further improvement of the technical scheme, the output end of the first motor is provided with a telescopic rod, the top of the telescopic rod is provided with a hole, and the hole is in sleeve joint with the bottom end of the third rod body.
As a further improvement of the technical scheme, slots are arranged on two sides of the cavity wall, clamping convex blocks are arranged in the slots, and one ends of the clamping convex blocks are fixedly connected with baffle plates.
As a further improvement of the technical scheme, a first threaded hole is formed in the first rod body, a first screw rod is arranged in the first threaded hole, a second threaded hole is formed in the second rod body, a second screw rod is arranged in the second threaded hole, a third threaded hole is formed in the third rod body, and a third screw rod is arranged in the third threaded hole.
As a further improvement of the technical scheme, the upper end of the cavity wall is provided with a fixed plate, the upper end of the fixed plate is provided with a mounting rack in a concave structure, the opening of the mounting rack faces downwards, the bottom of the mounting rack is provided with a second motor, an output shaft of the second motor is coaxially provided with a driving shaft, one side of the driving shaft is provided with a driven wheel, and the driving shaft and the driven wheel are connected through a transmission belt.
As a further improvement of the technical scheme, a rubber rod is arranged on the inner side of the driven wheel, the rubber rod is far away from one end of the driven wheel, a rotating shaft is connected to the end of the driven wheel, and the lower end of the rotating shaft is in threaded connection with the upper end of the first rod body.
As a further improvement of the technical scheme, the upper end of the third rod body is rotatably connected with the lower end of the second rod body, a fourth threaded hole is formed in the side edge of the telescopic rod, the fourth threaded hole penetrates through the side wall of the telescopic rod, and a fourth screw rod is arranged in the fourth threaded hole.
Compared with the prior art, the invention has the beneficial effects that:
1. in this grading plant is used in screening of fresh goods nostoc sphaeroides particle diameter, through the air-blower, the combined action of two screens of three sieve tray carries out effectual classified screening to nostoc sphaeroides, has improved the precision of screening.
2. In this grading plant is used in screening of bright article nostoc sphaeroides particle diameter, first motor output end is equipped with the telescopic link, and the telescopic link top is equipped with the hole, and the hole cup joints the cooperation with third body of rod bottom, can make the screening tray shake from top to bottom through the device and carry out nostoc sphaeroides' screening, has improved nostoc sphaeroides screening efficiency.
3. During this grading plant is used in screening of bright article nostoc sphaeroides particle diameter, be equipped with from the driving wheel inboard and glue the stick, glue the stick and keep away from driving wheel one end and be connected with the pivot, pivot lower extreme and first body of rod upper end threaded connection, rotatory and upper and lower sieving mechanism is not obstructed each other in this design assurance, can coexist, has improved nostoc sphaeroides screening efficiency.
Drawings
FIG. 1 is a schematic view of the entire structure of embodiment 1;
FIG. 2 is a schematic sectional view showing the whole structure of example 1;
FIG. 3 is a schematic structural view of a material pouring device in embodiment 1;
FIG. 4 is a schematic view of the structure of a screening apparatus according to example 1;
FIG. 5 is a schematic view A of the structure of a pouring device in accordance with embodiment 1;
FIG. 6 is a schematic structural diagram B of a pouring device in embodiment 1;
the various reference numbers in the figures mean:
100. a material pouring device;
101. a base; 102. a fixed mount; 103. a blower; 104. a chamber wall; 105. a feed inlet; 106. a discharge port; 107. a slide; 108. a first motor; 109. a telescopic rod; 110. a hole; 111. a slot; 112. clamping the convex block; 113. a baffle plate; 114. a fixing plate; 115. a mounting frame; 116. a second motor; 117. a drive shaft; 118. a driven wheel; 119. a transmission belt; 120. glue stick; 121. a rotating shaft; 122. a fourth threaded hole; 123. a fourth screw;
200. a screening device;
201. a first rod body; 202. a second rod body; 203. a third rod body; 204. a first sieve tray; 205. a second sieve tray; 206. a third sieve tray; 207. a first screen; 208. a second screen; 209. a first screw; 210. a second threaded hole; 211. a second threaded port; 211. a second screw; 212. a third threaded hole; 213. a third screw; 214. a first threaded hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Example 1
Referring to fig. 1-6, the present embodiment provides a classifying device for screening the particle size of fresh nostoc sphaeroides, comprising a material pouring device 100, a screening device 200 disposed on one side of the material pouring device 100, the material pouring device 100 comprising a base 101, a fixing frame 102 disposed on one side of the base 101, a blower 103 disposed on the fixing frame 102 for primarily separating nostoc sphaeroides by the wind force of the blower, a chamber wall 104 disposed on the side of the base 101, a material inlet 105 disposed on the top of the chamber wall 104, a material outlet 106 disposed at the lower end of the material inlet 105, a slide 107 disposed at the lower end of the material outlet 106 for controlling the amount and speed of nostoc sphaeroides falling down through the material inlet 105, a first motor 108 disposed on one side of the base 101, the screening device 200 comprising a first rod 201, a second rod 202 disposed at the lower end of the first rod 201, a first motor 108 disposed at the lower end of a, first body of rod 201 and first sieve tray 204 cup joints the cooperation, be equipped with second sieve tray 205 on the second body of rod 202, the second body of rod 202 cup joints the cooperation with second sieve tray 205, be equipped with third sieve tray 206 on the third body of rod 203, the third body of rod 203 cup joints the cooperation with third sieve tray 206, first sieve tray 204 bottom is equipped with first screen cloth 207, second sieve tray 205 bottom is equipped with second screen cloth 208, second screen cloth 208 sieve mesh is less than first screen cloth 207 sieve mesh, through two screen cloth composite action of three sieve tray, carry out effectual classified screening to nostoc sphaeroid, the precision of screening has been improved.
Specifically, first motor 108 output is equipped with telescopic link 109, and telescopic link 109 top is equipped with hole 110, and hole 110 cup joints the cooperation with third body of rod 203 bottom, can make the sieve tray shake from top to bottom and carry out the screening of nostoc sphaeroides through the device, has improved nostoc sphaeroides screening efficiency.
Further, chamber wall 104 both sides are equipped with slot 111, are equipped with joint lug 112 in the slot 111, joint lug 112 one end fixedly connected with baffle 113, and baffle 113 can block the shrivelled nostoc that air-blower 103 blew out, makes the nostoc fall into third sieve tray 206 along the wall, prevents extravagantly, has solved the problem that the nostoc was retrieved.
Furthermore, a first threaded hole 208 is formed in the first rod body 201, a first screw 209 is arranged in the first threaded hole 208, a second threaded hole 210 is formed in the second rod body 202, a second screw 211 is arranged in the second threaded hole 210, a third threaded hole 212 is formed in the third rod body 203, a third screw 213 is arranged in the third threaded hole 212, the sieve tray is fixed on the rod body, and when the sieve tray is rotated up and down, the sieve tray is prevented from moving to affect the screening efficiency.
In addition, chamber wall 104 upper end is equipped with fixed plate 114, the fixed plate upper end is equipped with mounting bracket 115 that is "concave" shape structure, mounting bracket 115's opening is down, second motor 116 is installed to mounting bracket 115's bottom portion, coaxial arrangement has driving shaft 117 on second motor 116's the output shaft, one side of driving shaft 117 is provided with from driving wheel 118, driving shaft 117 and follow drive connection through drive belt 119 transmission between the driving wheel 118, can make the rotatory screening that carries out nostoc sphaeroides of sieve tray through the device, nostoc sphaeroides screening efficiency has been improved.
In addition, follow driving wheel 118 inboard and be equipped with gluey stick 120, glue stick 120 and keep away from driven wheel 118 one end and be connected with pivot 121, pivot 121 lower extreme and first body of rod 201 upper end threaded connection, this design guarantees rotatory and upper and lower sieving mechanism not hinder each other, can coexist, has improved nostoc sphaeroides screening efficiency.
Further, third body of rod 203 upper end is rotated with the second body of rod 202 lower extreme and is connected, and telescopic link 109 side is equipped with fourth screw hole 122, and fourth screw hole 122 link up telescopic link 109 lateral wall, is equipped with fourth screw rod 123 in the fourth screw hole 122, fixes third body of rod 203 in the hole 110, prevents that excessive top sieve dish from causing the skew of position.
When the grading device for screening the particle size of fresh nostoc sphaeroides in the embodiment is used, after all the components are installed, the air blower 103 is started, nostoc sphaeroides grains are poured from the feeding hole 105, the shrunken nostoc sphaeroides grains are blown away and enter the third sieve tray 206 along the baffle plate 115, the full nostoc sphaeroides grains enter the first sieve tray 204, if the shaking screening is selected, the second motor 116 is selected, if the shaking screening is selected, the first motor 108 is started, the nostoc sphaeroides grains enter the second sieve tray 205 from the first sieve 207 and then enter the third sieve tray 206 through the second sieve 208, the grading is completed, after the grading is completed, the fourth screw 132 is screwed out, the first screw 209, the second screw 211 and the third screw 213 are screwed out, finally the rotating shaft 121 is spirally separated from the first rod body 201, the three sieve trays are sequentially taken out, the device has a simple structure, and simultaneously uses wind power, the shaking and the rotation up and down are used for separating the nostoc sphaeroides, the screening precision and the screening efficiency are improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a grading plant is used in screening of bright article nostoc sphaeroides particle diameter, is including tipping device (100), one side is equipped with sieving mechanism (200), its characterized in that: the material pouring device (100) comprises a base (101), a fixing frame (102) is arranged on one side of the base (101), an air blower (103) is arranged on the fixing frame (102), a cavity wall (104) is arranged on the side of the base (101), a feeding port (105) is arranged at the top of the cavity wall (104), a discharging port (106) is arranged at the lower end of the feeding port (105), a slide (107) is arranged at the lower end of the discharging port (106), a first motor (108) is arranged on one side of the base (101), the screening device (200) comprises a first rod body (201), a second rod body (202) is arranged at the lower end of the first rod body (201), the first motor (108) is arranged at the lower end of a third rod body (203) arranged at the bottom end of the second rod body (202), a first sieve tray (204) is arranged on the first rod body (201), and the first rod body (201) is, be equipped with second sieve tray (205) on the second body of rod (202), the second body of rod (202) with second sieve tray (205) cup joints the cooperation, be equipped with third sieve tray (206) on the third body of rod (203), the third body of rod (203) with third sieve tray (206) cup joints the cooperation, first sieve tray (204) bottom is equipped with first screen cloth (207), second sieve tray (205) bottom is equipped with second screen cloth (208), second screen cloth (208) sieve mesh is less than first screen cloth (207) sieve mesh.
2. The classifying device for screening the particle size of fresh nostoc sphaeroides according to claim 1, wherein: the first motor (108) output is equipped with telescopic link (109), telescopic link (109) top is equipped with hole (110), hole (110) with the cooperation is cup jointed to the third body of rod (203) bottom.
3. The classifying device for screening the particle size of fresh nostoc sphaeroides according to claim 1, wherein: the clamping device is characterized in that slots (111) are formed in two sides of the cavity wall (104), clamping convex blocks (112) are arranged in the slots (111), and one ends of the clamping convex blocks (112) are fixedly connected with baffle plates (113).
4. The classifying device for screening the particle size of fresh nostoc sphaeroides according to claim 1, wherein: be equipped with first screw hole (214) on the first body of rod (201), be equipped with first screw rod (209) in first screw hole (214), be equipped with second screw hole (210) on the second body of rod (202), be equipped with second screw rod (211) in second screw hole (210), be equipped with third screw hole (212) on the third body of rod (203), be equipped with third screw rod (213) in third screw hole (212).
5. The classifying device for screening the particle size of fresh nostoc sphaeroides according to claim 1, wherein: the utility model discloses a wall of chamber (104) upper end is equipped with fixed plate (114), the fixed plate upper end is equipped with mounting bracket (115) that is "concave" shape structure, the opening of mounting bracket (115) is down, second motor (116) are installed to the bottom of mounting bracket (115), coaxial arrangement has driving shaft (117) on the output shaft of second motor (116), one side of driving shaft (117) is provided with from driving wheel (118), driving shaft (117) and follow and connect through drive belt (119) transmission between driving wheel (118).
6. The classifying device for screening the particle size of fresh nostoc sphaeroides according to claim 5, wherein: follow driving wheel (118) inboard and be equipped with gluey stick (120), glue stick (120) keep away from follow driving wheel (118) one end is connected with pivot (121), pivot (121) lower extreme and first body of rod (201) upper end threaded connection.
7. The classifying device for screening the particle size of fresh nostoc sphaeroides according to claim 2, wherein: the upper end of the third rod body (203) is rotatably connected with the lower end of the second rod body (202), a fourth threaded hole (122) is formed in the side edge of the telescopic rod (109), the fourth threaded hole (122) penetrates through the side wall of the telescopic rod (109), and a fourth screw rod (123) is arranged in the fourth threaded hole (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011264464.5A CN112354861A (en) | 2020-11-12 | 2020-11-12 | Grading plant is used in screening of bright article nostoc sphaeroides particle diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011264464.5A CN112354861A (en) | 2020-11-12 | 2020-11-12 | Grading plant is used in screening of bright article nostoc sphaeroides particle diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112354861A true CN112354861A (en) | 2021-02-12 |
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ID=74514608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011264464.5A Withdrawn CN112354861A (en) | 2020-11-12 | 2020-11-12 | Grading plant is used in screening of bright article nostoc sphaeroides particle diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112354861A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040002833A (en) * | 2003-12-16 | 2004-01-07 | 천지환경주식회사 | Recycled aggregate sorting device |
| CN205431221U (en) * | 2016-03-29 | 2016-08-10 | 咸宁职业技术学院 | Flowers are cultivated with water conservation pergola |
| CN205596680U (en) * | 2016-03-03 | 2016-09-28 | 杨志恒 | Flower planting frame |
| CN206325840U (en) * | 2016-12-22 | 2017-07-14 | 湛江市汉成科技有限公司 | A kind of barley de-burring machine of gradable screening |
| CN208407616U (en) * | 2018-03-17 | 2019-01-22 | 吉林省田野泉酿造有限公司 | A kind of mechanical equipment for soybean sizing screening in agricultural production |
| CN208695596U (en) * | 2017-12-27 | 2019-04-05 | 佛山杰致信息科技有限公司 | A kind of agricultural seed screening machine |
-
2020
- 2020-11-12 CN CN202011264464.5A patent/CN112354861A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040002833A (en) * | 2003-12-16 | 2004-01-07 | 천지환경주식회사 | Recycled aggregate sorting device |
| CN205596680U (en) * | 2016-03-03 | 2016-09-28 | 杨志恒 | Flower planting frame |
| CN205431221U (en) * | 2016-03-29 | 2016-08-10 | 咸宁职业技术学院 | Flowers are cultivated with water conservation pergola |
| CN206325840U (en) * | 2016-12-22 | 2017-07-14 | 湛江市汉成科技有限公司 | A kind of barley de-burring machine of gradable screening |
| CN208695596U (en) * | 2017-12-27 | 2019-04-05 | 佛山杰致信息科技有限公司 | A kind of agricultural seed screening machine |
| CN208407616U (en) * | 2018-03-17 | 2019-01-22 | 吉林省田野泉酿造有限公司 | A kind of mechanical equipment for soybean sizing screening in agricultural production |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210212 |
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| WW01 | Invention patent application withdrawn after publication |