CN111069019A - Rotating cage type screening device for producing hemispheres by using skew rolling balls - Google Patents
Rotating cage type screening device for producing hemispheres by using skew rolling balls Download PDFInfo
- Publication number
- CN111069019A CN111069019A CN201911312313.XA CN201911312313A CN111069019A CN 111069019 A CN111069019 A CN 111069019A CN 201911312313 A CN201911312313 A CN 201911312313A CN 111069019 A CN111069019 A CN 111069019A
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- Prior art keywords
- hemisphere
- screening
- ball
- main shaft
- cage
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Classifications
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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
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/24—Revolving drums with fixed or moving interior agitators
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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
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
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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
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
Abstract
The invention relates to the technical field of metal plastic forming process and equipment, and provides a rotary cage type semisphere screening device for producing skew rolling balls, which comprises a screening rotary cage, a main shaft, a semisphere guide-out groove, a semisphere collecting bin, a ball inlet channel, a ball outlet channel, a power unit and a rack, wherein the screening rotary cage is arranged on the main shaft; the screening rotating cage is arranged on the frame through a main shaft and can rotate around the main shaft; the hemisphere guide groove is arranged below the screening rotating cage, and the hemisphere collecting bin is arranged below the hemisphere guide groove; the ball inlet channel and the ball outlet channel are respectively arranged at 2 opposite end faces of the screening rotating cage; the power unit provides rotary power for the screening rotating cage through the main shaft; the power unit, the main shaft, the hemisphere leading-out groove and the hemisphere collecting bin are all installed on the rack. The invention has simple structure, low manufacturing cost and good screening effect, saves the labor cost, well solves the problem that the hemisphere cannot be automatically detected in the production of ball parts such as a skew rolling steel ball, a copper ball and the like, and has wide application prospect.
Description
Technical Field
The invention relates to the technical field of metal plastic forming process and equipment, in particular to a rotary cage type semispherical screening device for producing skew rolling balls.
Background
The skew rolling ball process is an important process for producing ball parts, products comprise skew rolling balls, bearing balls, copper balls, steel balls and the like, the application is wide, the market demand is large, and the method has the advantages of high material utilization rate, high size precision, low production cost and the like. The skew rolling ball adopts the rod as the raw materials, and hemisphere (incomplete steel ball, the general name hemisphere) can appear at the head and the tail of each section rod among the rolling process, and traditional production line mainly adopts artifical letter sorting at hemisphere letter sorting process, and is efficient, with high costs.
No devices dedicated to screening hemispheres have been found in the prior art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides the rotating cage type screening device for the hemispheres in the skew rolling ball production, solves the problems of low efficiency, high cost and the like of manual hemisphere sorting in the existing skew rolling ball production, can save manpower, automatically screens the hemispheres and reduces the production cost.
The invention adopts the following technical scheme:
a rotary cage type screening device for producing hemispheres by skew rolling balls comprises a screening rotary cage, a main shaft, a hemisphere leading-out groove, a hemisphere collecting bin, a ball inlet channel, a ball outlet channel, a power unit and a rack;
the screening rotating cage is mounted on the rack through the main shaft and can rotate around the main shaft;
the hemisphere leading-out groove is arranged below the screening rotating cage, and the hemisphere collecting bin is arranged below the hemisphere leading-out groove;
the ball inlet channel and the ball outlet channel are respectively arranged at 2 opposite end faces of the screening rotating cage;
the power unit provides rotary power for the screening rotating cage through the main shaft;
the power unit, the main shaft, the hemisphere leading-out groove and the hemisphere collecting bin are all installed on the rack.
Further, the screening rotating cage is a polygonal rotating cage or a circular rotating cage, the inner wall of the polygonal rotating cage or the circular rotating cage is provided with a spiral track for rolling skew rolling balls, the spiral track is a single line or multiple lines, and the skew rolling balls enter from the ball inlet channel and roll to the ball outlet channel through the spiral track; the hemisphere falls into the hemisphere leading-out groove from the spiral track and then falls into the hemisphere collecting bin.
Furthermore, the screening rotating cage is a polygonal rotating cage which comprises a plurality of angle steels, steel pipes and spokes;
the number of the angle steels is equal to the number of the sides of the polygon, and the arrangement directions of the angle steels are all parallel to the main shaft; the angle steel is welded on the spoke and is fixed on the main shaft through the spoke;
and a row of parallel steel pipes which are obliquely arranged are arranged between every two adjacent angle steels, and a spiral track for the skew rolling balls to roll through is formed between every two adjacent steel pipes.
Further, the steel pipe is welded on the angle steel through a V-shaped connecting piece;
the angle steel is provided with through holes in parallel arrangement, a cylinder extends out of the bottom of the V-shaped connecting piece, the cylinder of the V-shaped connecting piece is inserted into the through holes and is installed on the angle steel, and an included angle between the V-shaped connecting piece and the angle steel is a spiral track lead angle.
Further, the size of the screening rotating cage is determined according to the following method:
distance l between center lines of adjacent steel pipes: 2(R + R) cos20 °;
included angle α between V-shaped connecting piece and angle steel:
r is the radius of the skew rolling ball;
r is the radius of the steel pipe, the value of R is (0.5-0.8) R, the over-thickness results in the overlarge integral size and influences the passing of the steel ball; the overall rigidity of the rotating cage is poor due to the fact that the rotating cage is too thin;
d is the diameter of the circumscribed circle of the rotating cage;
p is the number of lines of the spiral track (i.e. the number of spiral tracks).
Furthermore, two ends of the screening rotating cage are provided with steel ball baffles for preventing the skew rolling balls from slipping; the screening rotating cage is provided with a lifting plate at one end of the ball, the lifting plate is welded at the tail end of the spiral track, the number of the lifting plate is the same as the number of the spiral track lines, when the lifting plate rotates to the same height with the main shaft along with the rotating cage, the plane of the lifting plate coincides with the horizontal plane of the main shaft line, the rotating cage continues to rotate, and then the obliquely rolled ball on the lifting plate rolls to the ball outlet channel.
Furthermore, an outer cover is arranged above the screening rotating cage and installed on the rack, and a ball inlet and a ball outlet are formed in two end faces of the outer cover and used for installing a ball inlet channel and a ball outlet channel respectively.
Furthermore, the section of the hemisphere leading-out groove is integrally arc-shaped, and the arc bottom is cut off to allow the obliquely-rolled hemisphere to pass through; baffles are arranged on two end faces of the hemisphere leading-out groove.
Furthermore, the hemisphere collecting bin is connected with the rack through a sliding rail, and the hemisphere collecting bin is convenient to draw out.
Furthermore, the power unit adopts a worm gear speed reduction motor, the worm gear speed reduction motor is connected with the main shaft, and the main shaft is installed on the rack through a bearing seat.
Furthermore, the frame is formed by angle steel and channel steel combination welding.
Furthermore, the device also comprises a control system which is a controller or a computer and is used for controlling the rotating speed of the screening rotating cage.
The invention has the beneficial effects that: the obliquely rolled balls (whole balls and hemispheres) enter the screening rotating cage through the ball inlet channel, the whole balls rotate along with the rotating cage, and the whole balls are lifted to the ball outlet channel at the tail end of the spiral track and roll out of the screening device; the hemisphere then drops from the steel pipe clearance, derives the groove through the hemisphere and gets into hemisphere collection storehouse, accomplishes the screening process. The invention has simple structure, low manufacturing cost and good screening effect, saves the labor cost and well solves the problem that the hemisphere cannot be automatically detected in the production of ball parts such as oblique rolling steel balls, copper balls and the like.
Drawings
Fig. 1 is a schematic structural diagram of a hemisphere screening device for producing rotary cage type cross rolling balls according to an embodiment of the invention.
Fig. 2 shows a schematic structural view of a screening basket according to an embodiment.
Fig. 3 shows a schematic view of the installation of the lifting plate in an embodiment.
Fig. 4 is a schematic structural diagram of a hemispherical lead-out groove in the embodiment.
Fig. 5 is a schematic structural diagram of a hemispherical collection bin in an embodiment.
In the figure: 1. a reduction motor; 2. a main shaft; 3. screening and rotating the cage; 4. a spoke; 5. a ball entry passage; 6. a bearing seat; 7. a hemisphere lead-out slot; 8. a hemisphere collecting bin; 9. a lifting plate; a V-shaped connector; 11. a steel pipe; 12. a steel ball baffle; 13. a slide rail.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments.
In the production process of ball-type parts such as oblique-rolling ball-milling steel balls, bearing balls, copper balls and steel balls, hemispheres (incomplete balls, collectively called hemispheres) are generated at the head and the tail of each section of round bar stock.
As shown in fig. 1, the present invention provides a rotary cage type screening device for screening hemispheres produced during the production of skew rolled balls. The device comprises an outer cover, a screening rotating cage 3, a main shaft 2, a hemisphere guide-out groove 7, a hemisphere collecting bin 8, a ball inlet channel 5, a ball outlet channel, a power unit (a speed reducing motor 1) and a rack; the outer cover is arranged above the frame, and the two end faces of the outer cover are respectively provided with a ball inlet and a ball outlet for installing a ball inlet channel 5 and a ball outlet channel.
As shown in fig. 2, the screening rotary cage 3 is mounted on the frame through the main shaft 2, and the screening rotary cage 3 can rotate around the main shaft 2; two ends of the screening rotary cage 3 are provided with steel ball baffles 12 for preventing the cross-rolled balls from slipping, and one end of the screening rotary cage 3 at which the balls are discharged is provided with a lifting plate 9 (the mounting mode of the lifting plate 9 is shown in figure 3) for lifting the cross-rolled balls to the ball discharge channel; the hemisphere leading-out groove 7 is arranged below the screening rotating cage 3, and the hemisphere collecting bin 8 is arranged below the hemisphere leading-out groove 7; the power unit (the speed reducing motor 1) adopts a worm and gear speed reducing motor (not limited) and provides rotary power for the screening rotating cage 3 through the main shaft 2; the power unit 1, the main shaft 2, the hemisphere leading-out groove 7 and the hemisphere collecting bin 8 are all installed on the rack.
The screening rotating cage 3 can be in various geometric shapes, for example, the screening rotating cage can be a polygonal rotating cage or a circular rotating cage, the inner wall of the polygonal rotating cage or the circular rotating cage is provided with a spiral track for rolling of skew rolling balls, the spiral track is a single line or multiple lines, namely the number of the spiral tracks is 1 or a plurality of the spiral tracks.
A preferable mode is as shown in fig. 2 and 3, the screening rotating cage 3 is a polygonal rotating cage, and the polygonal rotating cage comprises a plurality of angle steels, steel pipes 11 and spokes; the number of the angle steels is equal to the number of the sides of the polygon, and the arrangement directions of the angle steels are all parallel to the main shaft 2; the angle steel is welded on the spoke and is fixed on the main shaft 2 through the spoke; a row of parallel steel pipes 11 which are arranged in an inclined mode are arranged between every two adjacent angle steels, and a spiral track for the skew rolling balls to roll through is formed between every two adjacent steel pipes 11; the skew rolling ball enters from the ball inlet channel 5 and rolls to the ball outlet channel through the spiral track; the hemisphere falls from the spiral track into the hemisphere lead-out channel 7 and then into the hemisphere collection bin 8.
More preferably, the steel pipe 11 is welded on the angle steel through a V-shaped connecting piece; the angle steel is provided with through holes in parallel arrangement, a cylinder extends out of the bottom of the V-shaped connecting piece, the cylinder of the V-shaped connecting piece is inserted into the through holes and is installed on the angle steel, and an included angle between the V-shaped connecting piece and the angle steel is a spiral track lead angle.
There are several ways to determine the size of the screening basket 3, and an optimized determination method is shown below:
distance l between center lines of adjacent steel pipes 11: 2(R + R) cos20 °;
included angle α between V-shaped connecting piece and angle iron：
R is the radius of the skew rolling ball;
r is the radius of the steel pipe, the value of R is (0.5-0.8) R, the over-thickness results in the overlarge integral size and influences the passing of the steel ball; the overall rigidity of the rotating cage is poor due to the fact that the rotating cage is too thin;
d is the diameter of the circumscribed circle of the rotating cage;
p is the number of lines of the spiral track.
Taking a steel ball with the diameter of 50mm as an example, the distance between the center lines of the steel pipes 11 is designed to be 75mm, the radius of the two steel pipes 11 is subtracted, and the residual gap is 45mm, so that the complete steel ball can smoothly pass through, and the hemisphere falls from the gap; the diameter of the rotating cage is 1600mm, the number of the spiral track lines is 8, and the included angle between the V-shaped connecting piece and the angle steel is 82.96 degrees.
It should be noted that the size of the screening cage 3 is not limited to the above preferred embodiment, as long as the whole balls of the skew rolled balls pass through the spiral track and the hemispheres fall into the hemisphere lead-out grooves 7 from the gaps of the spiral track.
As shown in fig. 4, the hemisphere lead-out groove 7 is arc-shaped, and the arc bottom is cut off to allow the hemisphere to pass through.
As shown in fig. 5, the bottom of the hemisphere collecting bin 8 is provided with a slide rail and is installed on the bottom plate of the rack, and a handle is installed on one side of the hemisphere collecting bin 8 and can be drawn out when the hemisphere collecting bin needs to be cleaned.
The working principle of the embodiment of the invention is as follows:
the power system 1 drives the polygonal screening rotary cage 3 to rotate; the whole rolled balls and the hemispheres of the skew rolling balls enter the screening rotating cage 3 through the ball inlet channel 5, the whole rolled balls spirally move forwards along with the screening rotating cage 3, and the whole rolled balls are lifted by the lifting plate 9 at the tail end of the spiral track to enter the ball outlet channel and roll out of the device; the hemisphere falls out from the gap at the bottom of the steel pipe 11, enters the hemisphere collecting bin 8 through the hemisphere leading-out groove 7 and is screened.
While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes may be made to the embodiments herein without departing from the spirit of the invention. The above examples are merely illustrative and should not be taken as limiting the scope of the invention.
Claims (10)
1. A rotary cage type screening device for producing hemispheres by skew rolling balls is characterized by comprising a screening rotary cage, a main shaft, a hemisphere leading-out groove, a hemisphere collecting bin, a ball inlet channel, a ball outlet channel, a power unit and a rack;
the screening rotating cage is mounted on the rack through the main shaft and can rotate around the main shaft;
the hemisphere leading-out groove is arranged below the screening rotating cage, and the hemisphere collecting bin is arranged below the hemisphere leading-out groove;
the ball inlet channel and the ball outlet channel are respectively arranged at 2 opposite end faces of the screening rotating cage;
the power unit provides rotary power for the screening rotating cage through the main shaft;
the power unit, the main shaft, the hemisphere leading-out groove and the hemisphere collecting bin are all installed on the rack.
2. A rotary cage type cross-rolling ball production hemisphere screening device as claimed in claim 1, wherein the screening rotary cage is a polygonal rotary cage or a circular rotary cage, the inner wall of the polygonal rotary cage or the circular rotary cage is provided with a spiral track for the cross-rolling balls to roll, and the spiral track is a single line or a plurality of lines; the skew rolling ball enters from the ball inlet channel and rolls to the ball outlet channel through the spiral track; the hemisphere falls into the hemisphere leading-out groove from the spiral track and then falls into the hemisphere collecting bin.
3. A rotary cage type cross-rolling ball production hemisphere screening device as claimed in claim 2, wherein the screening cage is a polygonal cage comprising a plurality of angle steels, steel tubes, spokes;
the number of the angle steels is equal to the number of the sides of the polygon, and the arrangement directions of the angle steels are all parallel to the main shaft; the angle steel is welded on the spoke and is fixed on the main shaft through the spoke;
and a row of parallel steel pipes which are obliquely arranged are arranged between every two adjacent angle steels, and a spiral track for the skew rolling balls to roll through is formed between every two adjacent steel pipes.
4. A rotary cage type cross-rolling ball production hemisphere screening device as claimed in claim 3, wherein the steel tubes are welded to the angle steels by V-shaped connectors;
the angle steel is provided with through holes in parallel arrangement, a cylinder extends out of the bottom of the V-shaped connecting piece, the cylinder of the V-shaped connecting piece is inserted into the through holes and is installed on the angle steel, and an included angle between the V-shaped connecting piece and the angle steel is a spiral track lead angle.
5. A rotary cage type cross-rolling ball production hemisphere screening device as claimed in claim 4, wherein the screening cages are sized according to the following method:
distance l between center lines of adjacent steel pipes: 2(R + R) cos20 °;
included angle α between V-shaped connecting piece and angle steel:
wherein R is the radius of the skew rolling ball; r is the radius of the steel pipe, and the value of R is (0.5-0.8) R; d is the diameter of the circumscribed circle of the rotating cage; p is the number of lines of the spiral track.
6. A rotary cage type cross-rolled ball production hemisphere screening device as claimed in any one of claims 2 to 5, wherein both ends of the screening rotary cage are provided with ball retainers for preventing the cross-rolled balls from slipping; a lifting plate is arranged at one end of the screening rotating cage for lifting the skew rolling balls to the ball outlet channel;
the lifting plates are welded at the tail end of the spiral track, and the number of the lifting plates is the same as the number of the spiral track lines; when the lifting plate rotates to the same height with the main shaft along with the rotating cage, the plane of the lifting plate is superposed with the horizontal plane of the axis of the main shaft, the rotating cage continues to rotate, and the obliquely rolled balls on the lifting plate roll into the ball outlet channel.
7. A rotary cage type ball milling production hemisphere screening device as claimed in any one of claims 1 to 5, wherein a cover is arranged above the screening rotary cage, the cover is mounted on the frame, and a ball inlet and a ball outlet are respectively arranged at two end faces of the cover for respectively mounting a ball inlet passage and a ball outlet passage.
8. A rotary cage type cross-rolled ball production hemisphere screening apparatus as claimed in claim 1, wherein the hemisphere lead-out channel is generally arc-shaped in cross section with a curved bottom cut away for the cross-rolled hemisphere to pass through; baffles are arranged on two end faces of the hemisphere leading-out groove.
9. A rotary cage type screening device for producing hemispheres by skew rolling balls according to claim 1, wherein the hemisphere collecting bin is connected with the frame through a slide rail, so that the hemisphere collecting bin can be conveniently drawn out.
10. A rotary cage type screening device for producing skew rolling balls and hemispheres as claimed in claim 1, wherein said power unit employs a worm gear reduction motor, said worm gear reduction motor is connected with said main shaft, and said main shaft is mounted on said frame through a bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312313.XA CN111069019B (en) | 2019-12-18 | 2019-12-18 | Rotating cage type screening device for producing hemispheres by using skew rolling balls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911312313.XA CN111069019B (en) | 2019-12-18 | 2019-12-18 | Rotating cage type screening device for producing hemispheres by using skew rolling balls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111069019A true CN111069019A (en) | 2020-04-28 |
| CN111069019B CN111069019B (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911312313.XA Active CN111069019B (en) | 2019-12-18 | 2019-12-18 | Rotating cage type screening device for producing hemispheres by using skew rolling balls |
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| Country | Link |
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| CN (1) | CN111069019B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029232A (en) * | 2021-11-05 | 2022-02-11 | 昆明理工大学 | Potato cleaning and sorting machine |
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| JPH09136064A (en) * | 1995-11-10 | 1997-05-27 | Kaname Wakasugi | Rotating cylinder type sorting apparatus |
| CN202045068U (en) * | 2011-03-30 | 2011-11-23 | 江苏力星通用钢球股份有限公司 | Replaceable rolling tube type sorting device for precise steel ball heat treatment connecting line |
| CN203380078U (en) * | 2013-06-28 | 2014-01-08 | 江苏沃野生物科技发展有限公司 | Drum-type screening equipment |
| CN204170926U (en) * | 2014-10-16 | 2015-02-25 | 河北钢铁股份有限公司承德分公司 | Vanadium-nitrogen alloy raw material ball screening plant |
| CN204503530U (en) * | 2015-01-05 | 2015-07-29 | 郎溪县三溪生态龙虾养殖专业合作社 | A kind of small aquatic products sifting sort machine |
| CN207641840U (en) * | 2017-11-24 | 2018-07-24 | 洛阳豫鹭矿业有限责任公司 | A kind of spiral rotary screen |
| CN108330270A (en) * | 2018-03-20 | 2018-07-27 | 北京科技大学 | A kind of polygon drum-type oblique milling ball milling steel ball quenching device |
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2019
- 2019-12-18 CN CN201911312313.XA patent/CN111069019B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09136064A (en) * | 1995-11-10 | 1997-05-27 | Kaname Wakasugi | Rotating cylinder type sorting apparatus |
| CN202045068U (en) * | 2011-03-30 | 2011-11-23 | 江苏力星通用钢球股份有限公司 | Replaceable rolling tube type sorting device for precise steel ball heat treatment connecting line |
| CN203380078U (en) * | 2013-06-28 | 2014-01-08 | 江苏沃野生物科技发展有限公司 | Drum-type screening equipment |
| CN204170926U (en) * | 2014-10-16 | 2015-02-25 | 河北钢铁股份有限公司承德分公司 | Vanadium-nitrogen alloy raw material ball screening plant |
| CN204503530U (en) * | 2015-01-05 | 2015-07-29 | 郎溪县三溪生态龙虾养殖专业合作社 | A kind of small aquatic products sifting sort machine |
| CN207641840U (en) * | 2017-11-24 | 2018-07-24 | 洛阳豫鹭矿业有限责任公司 | A kind of spiral rotary screen |
| CN108330270A (en) * | 2018-03-20 | 2018-07-27 | 北京科技大学 | A kind of polygon drum-type oblique milling ball milling steel ball quenching device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029232A (en) * | 2021-11-05 | 2022-02-11 | 昆明理工大学 | Potato cleaning and sorting machine |
| CN114029232B (en) * | 2021-11-05 | 2022-11-11 | 昆明理工大学 | Potato cleaning and sorting machine |
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| CN111069019B (en) | 2021-05-18 |
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