CN112275630A - A dust collector for grain sieve separator - Google Patents

A dust collector for grain sieve separator Download PDF

Info

Publication number
CN112275630A
CN112275630A CN202011077773.1A CN202011077773A CN112275630A CN 112275630 A CN112275630 A CN 112275630A CN 202011077773 A CN202011077773 A CN 202011077773A CN 112275630 A CN112275630 A CN 112275630A
Authority
CN
China
Prior art keywords
screen
screening device
cam
grain
dust
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.)
Withdrawn
Application number
CN202011077773.1A
Other languages
Chinese (zh)
Inventor
李炎儒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Huayu Machinery Manufacturing Co ltd
Original Assignee
Anhui Huayu Machinery Manufacturing Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anhui Huayu Machinery Manufacturing Co ltd filed Critical Anhui Huayu Machinery Manufacturing Co ltd
Priority to CN202011077773.1A priority Critical patent/CN112275630A/en
Publication of CN112275630A publication Critical patent/CN112275630A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/28Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
    • B07B1/34Moving 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07BSEPARATING 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
    • B07B1/00Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/4609Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/04Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

The invention discloses a dust removal device for a grain screening machine, which comprises: the middle of the mounting rack is provided with a motor and a cam; the motor and the cam are connected through a transmission belt: the middle of the lower surface of the screening device is provided with a connecting block; the connecting block is connected with the cam through a connecting rod; the upper surface of the screening device is provided with a feeding port; a first screen and a second screen are arranged on the inner side of the screening device from top to bottom; a triangular block is movably arranged on the inner bottom surface of the screening device; a third discharge hole is formed below the triangular block; the upper end of the third discharge hole is connected with one end of the air pipe; the other end of the air pipe is connected with the upper end of the dust collecting bin; an exhaust fan is arranged in the middle of the air pipe; the packing auger is arranged at the lower end of the dust collecting bin. According to the invention, the multilayer screen is arranged in the screening device to screen out impurities in the grains, and the screening device is driven to vibrate up and down through the matching of the motor and the cam connecting rod structure, so that the screening efficiency of the screening device is improved, and the dust in the grains is collected and discharged through the matching of the exhaust fan and the dust collection bin.

Description

A dust collector for grain sieve separator
Technical Field
The invention belongs to the technical field of grain production equipment, and particularly relates to a dust removal device for a grain screening machine.
Background
Agriculture belongs to a first industry, a department for planting and producing by utilizing land resources is planting industry, a department for aquaculture by utilizing a water area space on the land is aquaculture industry, also called fishery industry, a department for cultivating and cutting forest trees by utilizing the land resources is forestry, and a department for developing livestock by utilizing the land resources or directly utilizing grasslands is livestock industry; small-scale processing or making of these products is a side-product, all of which are organic components of agriculture; developing and displaying the landscape or regional resources is sightseeing agriculture, also called leisure agriculture, which is a novel agricultural form generated along with the surplus of spare time of people in a new period; after the agricultural grain is harvested, airing, bagging and storing are needed.
The two seasons of summer and autumn are the time periods for farmers and grain storage units to store grains in a centralized manner every year, and in the grain production process, soil and gravels with different sizes in the grains need to be screened, so that the impurities in the grains are reduced. At present, there are many kinds of grain cleaning equipment at home and abroad, such as a cylindrical primary cleaning sieve, a vibration cleaning sieve, a plane rotary sieve, a stone remover and the like.
Beans, corns and the like in grains need to be screened during quality inspection or determination, sundries and broken particles need to be removed, screening machines or screening plates are generally used in the prior art during screening, but only dust or small particles can be screened out, the problem that large particles cannot be removed exists, manual selection is needed, the working time is long, and the manual investment is large.
Disclosure of Invention
The invention aims to provide a dust removal device for a grain screening machine, which screens out impurities in grains by arranging a plurality of layers of screen meshes in the screening device, drives the screening device to vibrate up and down by matching of a motor and a cam connecting rod structure, improves the screening efficiency of the screening device, collects and discharges dust in the grains by matching of an exhaust fan and a dust collection bin, realizes automatic screening of the grains and can improve the quality of the grains.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a dust removal device for a grain screening machine, which comprises a mounting frame and a screening device, wherein the screening device is movably mounted on the mounting frame; the mounting rack comprises a plurality of support rods which are longitudinally arranged; a fixed platform is arranged in the middle of the mounting rack; a motor and a cam are arranged on the fixed platform; the motor is connected with the cam through a transmission belt: sliding blocks are respectively arranged on two sides of the lower surface of the screening device; the sliding block is slidably arranged on the supporting rod of the mounting rack; a connecting block is arranged in the middle of the lower surface of the screening device; the connecting block is connected with the cam through a connecting rod; the motor drives the screening device to vibrate up and down along the supporting rod through the cam and the connecting rod; the upper surface of the screening device is provided with a feeding port; a first screen and a second screen are arranged on the inner side of the screening device from top to bottom; a triangular block is movably arranged on the inner bottom surface of the screening device; the first screen and the second screen are both inclined; a first discharge hole is formed below the first screen; a second discharge hole is formed below the second screen; a third discharge hole is formed below the triangular block; the upper end of the third discharge hole is connected with one end of an air pipe; the other end of the air pipe is connected with the upper end of the dust collection bin; an exhaust fan is arranged in the middle of the air pipe; the air pipe is a telescopic pipe; the upper end of the dust collecting bin is provided with an air outlet; a shaft lever is arranged in the middle of the dust collecting bin; helical blades are arranged on the peripheral side surface of the shaft lever; the lower end of the dust collection bin is provided with a packing auger; one side of the lower surface of the packing auger is provided with a dust outlet.
Further, a plurality of universal wheels are installed to the mounting bracket lower extreme.
Furthermore, one side of the cam surface is provided with a first pin shaft; and a second pin shaft is arranged on one side surface of the connecting block.
Furthermore, two ends of the connecting rod are respectively provided with a pin hole; the pin hole is hinged and matched with the first pin shaft/the second pin shaft.
Furthermore, the mesh aperture of the first screen is larger than that of the second screen, and large impurities such as weeds in the grains are screened out by the first screen; and the second screen is arranged to screen out small impurities such as stones, soil and the like in the grains.
Furthermore, a handle is arranged on the outer side face of the triangular block; the triangular blocks can be conveniently drawn out from the screening device for replacement by arranging the handle; a layer of magnetic material is compounded on the upper surface of the triangular block; the iron filings in the grain are adsorbed and filtered by the magnetic material.
Further, the third discharge hole is connected with a conveying conveyor belt; and the grain after being screened is discharged by the material conveying conveyor belt.
Furthermore, a rotating motor is installed on one end face of the packing auger; a rotating shaft is arranged in the middle of the packing auger; the rotating shaft is connected with an output shaft of the rotating motor; and conveying blades are arranged on the peripheral side surface of the rotating shaft.
The invention has the following beneficial effects:
according to the invention, the multilayer screen meshes are arranged in the screening device to screen out impurities in the grains, and the screening device is driven to vibrate up and down through the matching of the motor and the cam connecting rod structure, so that the screening efficiency of the screening device is improved, and dust in the grains is collected and discharged through the matching of the exhaust fan and the dust collection bin, so that the automatic screening of the grains is realized, and the quality of the grains can be improved.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dust removing device for a grain screening machine.
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 "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1, the invention is a dust removing device for a grain screening machine, comprising an installation frame 1 and a screening device 2, wherein the screening device 2 is movably installed on the installation frame 1; the mounting rack 1 comprises a plurality of support rods which are longitudinally arranged; a fixed platform 101 is arranged in the middle of the mounting rack 1; a motor 102 and a cam 103 are arranged on the fixed platform 101; a first pin 1031 is arranged on one side of the surface of the cam 103; the motor 102 and the cam 103 are connected by a belt 104: a plurality of universal wheels 106 are arranged at the lower end of the mounting rack 1;
the two sides of the lower surface of the screening device 2 are respectively provided with a sliding block 208; the sliding block 208 is slidably mounted on the supporting rod of the mounting rack 1; a connecting block 209 is arranged in the middle of the lower surface of the screening device 2; a second pin shaft 2091 is arranged on one side surface of the connecting block 209; the connecting block 209 is connected with the cam 103 through a connecting rod 105; two ends of the connecting rod 105 are respectively provided with a pin hole 1051; the pin hole 1051 is hinged with the first pin 1031/the second pin 2091; the motor 102 drives the screening device 2 to vibrate up and down along the supporting rod through the cam 103 and the connecting rod 105;
the upper surface of the screening device 2 is provided with a feeding port 201; a first screen 202 and a second screen 203 are arranged on the inner side of the screening device 2 from top to bottom; the mesh opening diameter of the first screen 202 is larger than that of the second screen 203, and large impurities such as weeds in the grains are screened out by arranging the first screen 202; the second screen 203 is arranged to screen out small impurities such as stones, soil and the like in the grains; a triangular block 204 is movably arranged on the inner bottom surface of the screening device 2; a handle 2041 is arranged on the outer side surface of the triangular block 204; the triangular block 204 can be conveniently drawn out from the screening device 2 for replacement by arranging the handle 2041; the upper surface of the triangular block 204 is compounded with a layer of magnetic material; the magnetic material is arranged to adsorb and filter iron filings in the grain
The first screen 202 and the second screen 203 are both inclined; a first discharge port 205 is arranged below the first screen 202; a second discharge hole 206 is arranged below the second screen mesh 203; a third discharge hole 207 is arranged below the triangular block 204; the third discharge port 207 is connected with the material conveying conveyor belt; the grain after screening is discharged by the conveying conveyor belt;
the upper end of the third discharge hole 207 is connected with one end of the air pipe 3; the other end of the air pipe 3 is connected with the upper end of the dust collecting bin 5; an exhaust fan 4 is arranged in the middle of the air pipe 3; the air pipe 3 is a telescopic pipe;
the upper end of the dust collecting bin 5 is provided with an air outlet 501; a shaft 502 is arranged in the middle of the dust collecting bin 5; helical blades 503 are mounted on the peripheral side surface of the shaft 502; the lower end of the dust collection bin 5 is provided with a packing auger 6; one side of the lower surface of the packing auger 6 is provided with a dust outlet 604; one end face of the packing auger 6 is provided with a rotating motor 601; a rotating shaft 602 is arranged in the middle of the packing auger 6; the rotating shaft 602 is connected with an output shaft of the rotating motor 601; the circumferential side surface of the rotating shaft 602 is provided with a conveying blade 603.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. A dust removal device for a grain screening machine comprises an installation frame (1) and a screening device (2), wherein the screening device (2) is movably installed on the installation frame (1); the method is characterized in that:
the mounting rack (1) comprises a plurality of support rods which are longitudinally arranged; a fixed platform (101) is arranged in the middle of the mounting rack (1); a motor (102) and a cam (103) are arranged on the fixed platform (101); the motor (102) and the cam (103) are connected through a transmission belt (104):
two sides of the lower surface of the screening device (2) are respectively provided with a sliding block (208); the sliding block (208) is slidably mounted on the supporting rod of the mounting rack (1); a connecting block (209) is arranged in the middle of the lower surface of the screening device (2); the connecting block (209) is connected with the cam (103) through a connecting rod (105);
the motor (102) drives the screening device (2) to vibrate up and down along the supporting rod through the cam (103) and the connecting rod (105);
a feeding port (201) is formed in the upper surface of the screening device (2); a first screen (202) and a second screen (203) are arranged on the inner side of the screening device (2) from top to bottom; a triangular block (204) is movably arranged on the inner bottom surface of the screening device (2);
the first screen (202) and the second screen (203) are both inclined; a first discharge hole (205) is formed below the first screen (202); a second discharge hole (206) is arranged below the second screen (203); a third discharge hole (207) is formed below the triangular block (204);
the upper end of the third discharge hole (207) is connected with one end of the air pipe (3); the other end of the air pipe (3) is connected with the upper end of the dust collection bin (5); an exhaust fan (4) is arranged in the middle of the air pipe (3);
the upper end of the dust collection bin (5) is provided with an air outlet (501); a shaft lever (502) is arranged in the middle of the dust collection bin (5); helical blades (503) are arranged on the peripheral side surface of the shaft rod (502); the lower end of the dust collection bin (5) is provided with a packing auger (6); one side of the lower surface of the packing auger (6) is provided with a dust outlet (604).
2. The dust removing device for the grain screening machine according to claim 1, wherein a plurality of universal wheels (106) are installed at the lower end of the mounting frame (1).
3. The dust removing device for grain screening machine according to claim 1, wherein a first pin (1031) is provided on one side of the surface of said cam (103); and a second pin shaft (2091) is arranged on one side surface of the connecting block (209).
4. The dust removing device for grain screening machine according to claim 1, wherein both ends of said connecting rod (105) are respectively provided with a pin hole (1051); the pin hole (1051) is in hinged fit with the first pin shaft (1031)/the second pin shaft (2091).
5. The dust removing apparatus for the grain screener according to claim 1, wherein the mesh opening size of the first screen (202) is larger than the mesh opening size of the second screen (203).
6. The dust removing device for the grain screening machine according to claim 1, wherein a handle (2041) is arranged on the outer side surface of the triangular block (204); the upper surface of the triangular block (204) is compounded with a layer of magnetic material.
7. The dust removing apparatus for grain screening machine according to claim 1, wherein said third discharging port (207) is connected to a feeding conveyor belt; and the grain after being screened is discharged by the material conveying conveyor belt.
8. The dust removing device for the grain screening machine according to claim 1, wherein a rotating motor (601) is installed at one end surface of the packing auger (6); a rotating shaft (602) is arranged in the middle of the packing auger (6); the rotating shaft (602) is connected with an output shaft of the rotating motor (601); and conveying blades (603) are arranged on the peripheral side surface of the rotating shaft (602).
CN202011077773.1A 2020-10-10 2020-10-10 A dust collector for grain sieve separator Withdrawn CN112275630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011077773.1A CN112275630A (en) 2020-10-10 2020-10-10 A dust collector for grain sieve separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011077773.1A CN112275630A (en) 2020-10-10 2020-10-10 A dust collector for grain sieve separator

Publications (1)

Publication Number Publication Date
CN112275630A true CN112275630A (en) 2021-01-29

Family

ID=74421900

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011077773.1A Withdrawn CN112275630A (en) 2020-10-10 2020-10-10 A dust collector for grain sieve separator

Country Status (1)

Country Link
CN (1) CN112275630A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113210251A (en) * 2021-04-12 2021-08-06 界首中禾粮机科技有限公司 Grain dust collector with straw separating function
CN114472155A (en) * 2022-02-11 2022-05-13 孙敏 Filter equipment is used in medicine research and development

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7213307A (en) * 1971-10-12 1973-04-16
CN103752508A (en) * 2014-01-17 2014-04-30 和田天力沙生药物开发有限责任公司 Cistanche tubulosa vibration sieve bed and screening method
CN205797727U (en) * 2016-06-23 2016-12-14 宿迁市通达机械有限公司 A kind of grain screening dust arrester
CN107185824A (en) * 2017-06-27 2017-09-22 曹政 A kind of bridge construction sand rapid screening equipment
WO2019010738A1 (en) * 2017-07-13 2019-01-17 沈阳隆基电磁科技股份有限公司 Iron fine removal and sorting system for magnetic hard rocks
CN210880416U (en) * 2019-08-28 2020-06-30 金溪县金港实业有限公司 Plastic products raw materials conveyer
CN211302225U (en) * 2019-10-12 2020-08-21 江苏华海三联净化材料有限公司 Filter equipment of desulfurizer production

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7213307A (en) * 1971-10-12 1973-04-16
CN103752508A (en) * 2014-01-17 2014-04-30 和田天力沙生药物开发有限责任公司 Cistanche tubulosa vibration sieve bed and screening method
CN205797727U (en) * 2016-06-23 2016-12-14 宿迁市通达机械有限公司 A kind of grain screening dust arrester
CN107185824A (en) * 2017-06-27 2017-09-22 曹政 A kind of bridge construction sand rapid screening equipment
WO2019010738A1 (en) * 2017-07-13 2019-01-17 沈阳隆基电磁科技股份有限公司 Iron fine removal and sorting system for magnetic hard rocks
CN210880416U (en) * 2019-08-28 2020-06-30 金溪县金港实业有限公司 Plastic products raw materials conveyer
CN211302225U (en) * 2019-10-12 2020-08-21 江苏华海三联净化材料有限公司 Filter equipment of desulfurizer production

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李飞: "《中药炮制学》", 31 July 2013, 中国医药科技出版社 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113210251A (en) * 2021-04-12 2021-08-06 界首中禾粮机科技有限公司 Grain dust collector with straw separating function
CN114472155A (en) * 2022-02-11 2022-05-13 孙敏 Filter equipment is used in medicine research and development

Similar Documents

Publication Publication Date Title
CN112275630A (en) A dust collector for grain sieve separator
CN213887162U (en) Impurity removing device in flour processing process
CN110899117A (en) Grain edulcoration device for agricultural production
CN214487790U (en) Multilayer sieve bed structure
CN210279760U (en) Novel chinese herbal medicine sieve separator
CN218797321U (en) Glass water bores raw materials screening plant
CN215235896U (en) Corn screening plant for agricultural production
CN213700789U (en) Air screen type corn seed selection device
CN208357243U (en) A kind of grain cleaning machine
CN208213663U (en) A kind of agricultural machinery impurity removing equipment
CN220547261U (en) Dust collector for sieve separator
CN215429479U (en) Seed screening equipment for agricultural cultivation
CN220177556U (en) Corn grits granule selection by winnowing equipment that sieves
CN213494854U (en) Cabbage seed sieving mechanism
CN220258311U (en) Ginger powder screening and impurity removing equipment
CN205071722U (en) Corn thresher with roller screen
CN218691360U (en) Corn screening plant for agricultural production
CN212883535U (en) A high-efficient screening plant for rice edulcoration
CN214902286U (en) Screening assembly device for bean harvester
CN220072448U (en) Screening machine
CN218982234U (en) Agricultural rapeseed efficient screening device
CN213670420U (en) Seed sieving mechanism is used in agricultural technology popularization
CN216500765U (en) Seed sieving mechanism is used in agricultural technology popularization
CN217217480U (en) High-quality high-yield screening device for selenium-enriched wheat breeding
CN220072382U (en) Crop screening and airing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication

Application publication date: 20210129

WW01 Invention patent application withdrawn after publication