CN106111544A - Ball mill grinding body sorting device - Google Patents
Ball mill grinding body sorting device Download PDFInfo
- Publication number
- CN106111544A CN106111544A CN201610678239.3A CN201610678239A CN106111544A CN 106111544 A CN106111544 A CN 106111544A CN 201610678239 A CN201610678239 A CN 201610678239A CN 106111544 A CN106111544 A CN 106111544A
- Authority
- CN
- China
- Prior art keywords
- screen assemblies
- abrasive body
- screen
- ball
- sorting device
- 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.)
- Granted
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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
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/04—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices according to size
-
- 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
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/16—Feed or discharge arrangements
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- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of ball mill grinding body sorting device, including supporting center pillar, the spiral helicine abrasive body passage passed through for spherical abrasive body and the multiple Screen assemblies being arranged in abrasive body passage, support center pillar and run through abrasive body passage up and down for supporting abrasive body passage, the top of abrasive body passage arranges ball hole, bottom is provided with the ball mouth that quantity is equal with Screen assemblies, the afterbody of each ball mouth and a Screen assemblies communicates, multiple Screen assemblies are spaced setting from top to bottom, and it is gradually reduced by the screen slot of one, the top Screen assemblies to lower section penultimate Screen assemblies.Provide the benefit that: the abrasive body of various diameter ranges is put into sorting unit from ball hole by the application; multiple Screen assemblies sub-elect the abrasive body of different-diameter scope respectively and discharge from corresponding ball mouth; participate in without artificial; sorting unit is automatically performed the sorting of abrasive body; in hgher efficiency; saving the time brought down stocks, mill downtime is few.
Description
Technical field
The present invention relates to a kind of ball mill grinding body sorting device, belong to solid material milling equipment field.
Background technology
Ball mill is a kind of equipment being widely used in the solid material grindings such as cement, slag, nonmetallic ore.Its investment
Less, properties of product are reliable and stable.Ball mill is in operation process, and abrasive body is constantly worn, and volume is more and more less, ball mill
Mill efficiency also decrease, be accomplished by bringing down stocks down ball when abrasive body may wear to certain degree, abrasive body sorted
After be added abrasive body further according to suitable ball wildcarding scheme；Grinding machine can be made when bringing down stocks with rational system tip-in to maintain preferably
Grinding state.
Existing abrasive body is brought down stocks to sort and is relied on manpower to carry out, and the efficiency of separation is low, and labor strength is big, when grinding machine is shut down
Between long.
Summary of the invention
It is an object of the invention to provide a kind of ball mill grinding body sorting device, use frame for movement to realize dividing of abrasive body
Choosing, saves and brings down stocks the time, improves the efficiency of separation of abrasive body.
For solving the problems referred to above, the technical solution used in the present invention is: a kind of ball mill grinding body sorting device, including
Support center pillar, the spiral helicine abrasive body passage passed through for spherical abrasive body and the multiple screening groups being arranged in abrasive body passage
Part, it is upper and lower that described support center pillar runs through abrasive body passage, is used for supporting abrasive body passage, the top of abrasive body passage arrange into
Ball mouth, bottom is provided with the ball mouth that quantity is equal with Screen assemblies, and the afterbody of each ball mouth and a Screen assemblies communicates,
Described multiple Screen assemblies are spaced setting from top to bottom, and are sieved by one, the top Screen assemblies to lower section penultimate
The screen slot of subassembly is gradually reduced.Support center pillar in the application is used for supporting whole sorting unit, and multiple Screen assemblies are from upper
Being sequentially reduced to lower screen slot, the abrasive body of sphere diameter maximum is stopped by the Screen assemblies of the superiors, and by the ball mouth with the top
Device for transferring, the abrasive body that sphere diameter is a little bit smaller, it is possible to dropped in the Screen assemblies of the second layer by the top Screen assemblies screen slot
On, then the screening of screened assembly, stop can not by the abrasive body of second layer Screen assemblies, and by with second layer Screen assemblies
The ball mouth device for transferring communicated, until after the Screen assemblies screening of lower section layer second from the bottom, sphere diameter is less than second, lower section sieve
On subassembly, the abrasive body of screen slot width is by the ball mouth device for transferring communicated with undermost Screen assemblies, thus realizes grinding
The sorting of body；The application sorts abrasive body, only need to render in sorting unit from ball hole by the abrasive body of different sphere diameters, sorting
Device is automatically performed assorting room, and the efficiency of separation is high, thus saves the time brought down stocks.
As a further improvement on the present invention, a Screen assemblies of bottom is the tabular not having screen slot；Bottom
Screen slot is not had, as long as can be by the abrasive body of the Screen assemblies of layer second from the bottom, all from the sieve with bottom in Screen assemblies
The ball mouth that subassembly communicates is discharged, and the screen slot of layer second from the bottom can set according to actual needs, due to the screening group of bottom
Part does not has screen slot, and the most tiny abrasive body (abrasive body comprising grinding shape) all will not fall from the Screen assemblies of bottom
Fall, and the health of sorting unit position from ball mouth device for transferring, can only be kept.
As a further improvement on the present invention, described Screen assemblies includes the first screening group set gradually from top to bottom
Part, the second Screen assemblies and the 3rd Screen assemblies, and the first Screen assemblies, the second Screen assemblies and the 3rd Screen assemblies are all in spiral shell
Rotation shape, described ball mouth includes the first ball mouth, the second ball mouth and the 3rd separated by the first baffle plate and second baffle
Ball mouth, the bottom of the first described Screen assemblies is connected with the top of the first baffle plate, the bottom of the second described Screen assemblies
It is connected with the top of second baffle；The most in the shape of a spiral, abrasive body moves downward three Screen assemblies along Screen assemblies, and finally
Move to the ball mouth communicated with Screen assemblies, and discharge from ball mouth, prevent abrasive body from piling up in Screen assemblies, impact sieve
Point persistently carry out, the first baffle plate in the application and second baffle by separated for three ball mouths, and the first baffle plate with
The top of second baffle makes three ball mouths and corresponding Screen assemblies with the connection of Screen assemblies, prevents different sphere diameter model
The abrasive body enclosed is discharged from same ball mouth.
As a further improvement on the present invention, the 3rd described ball mouth is provided with third gear away from the side of second baffle
Plate, the described bottom of the 3rd Screen assemblies is connected with the top of third gear plate；The two ends up and down of third gear plate connect respectively
Three ball mouths and the 3rd Screen assemblies, for supporting the 3rd Screen assemblies.
As a further improvement on the present invention, the first described Screen assemblies includes many, and in the shape of a spiral and centrage overlaps
Round steel, many round steel are increased to overall diameter successively by supporting center pillar, between adjacent two round steel constitute screen slot；Described second
Screen assemblies include many in the shape of a spiral and centrage overlap round steel, many round steel are increased to overall diameter successively by supporting center pillar
Greatly, constituting screen slot between adjacent two round steel, the round steel quantity of the second Screen assemblies is more than the round steel quantity of the first Screen assemblies,
And all screen slot width of the first Screen assemblies are the most equal, all screen slot width of the second Screen assemblies are the most equal；The application
In the first Screen assemblies and the second Screen assemblies constituted by spiral helicine round steel, its screen slot can not only make less the grinding of diameter
Mill body is passed through, and the motion being relatively large in diameter intransitable abrasive body is played the effect of guiding, is more beneficial for abrasive body
Discharge from corresponding ball mouth.
As a further improvement on the present invention, the upper end of described abrasive body passage arranges fourth gear plate, described first
The upper end of Screen assemblies and the second Screen assemblies is fixed on fourth gear plate；Fourth gear plate is used for fixing the first Screen assemblies and
The upper end of two Screen assemblies, plays stable effect to whole sorting unit.
As a further improvement on the present invention, the lower end of described abrasive body passage arranges fifth gear plate, fifth gear plate
The lower surface of top and the 3rd Screen assemblies is fixed；Fifth gear plate is set, after the abrasive body of sphere diameter maximum touches fifth gear plate
Discharging from the first ball mouth, the abrasive body preventing sphere diameter scope maximum is crossed the first ball mouth and is deposited in abrasive body passage.
As a further improvement on the present invention, described ball hole is small top and big bottom horn-like；In the application
Ball hole is horn-like, and upper end is big, it is simple to the input of abrasive body.
As a further improvement on the present invention, described ball mouth is small top and big bottom；The lower end of ball mouth is little, increases three
The spacing of individual ball mouth, it is simple to from the collection of the abrasive body that three ball mouths are discharged.
In sum, the invention has the beneficial effects as follows: the abrasive body of various diameter ranges is put into by the application from ball hole
In sorting unit, multiple Screen assemblies sub-elect the abrasive body of different sphere diameter scope respectively and discharge from corresponding ball mouth,
From the beginning of abrasive body puts into sorting unit, it is not necessary to manually participating in, sorting unit is automatically performed the sorting of abrasive body, with prior art
Artificial separation compare, in hgher efficiency, do not have abrasive body and pile up, save time of bringing down stocks, owing to the efficiency of separation is high, therefore,
The time that grinding machine is shut down reduces accordingly.
Accompanying drawing explanation
Fig. 1 is the front view of the application.
Fig. 2 is the left view of the application.
Fig. 3 is the top view of the application.
Fig. 4 is the A-A sectional view of Fig. 3.
Fig. 5 is first perspective view of the application.
Fig. 6 is second perspective view of the application.
Fig. 7 is the internal structure schematic diagram of reflection the application.
Wherein: 1, support center pillar；2, abrasive body passage；3, ball hole；4, ball mouth；5, the first Screen assemblies；6, second
Screen assemblies；7, the 3rd Screen assemblies；8, the first baffle plate；9, second baffle；10, third gear plate；11, fourth gear plate；12, the 5th
Baffle plate.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described further.
Ball mill grinding body sorting device as shown in Figures 1 to 7, including supporting center pillar 1, supplying spherical abrasive body to pass through
Spiral helicine abrasive body passage 2 and the multiple Screen assemblies being arranged in abrasive body passage 2, described support center pillar 1 is along grinding
The centrage of body passage 2 runs through abrasive body passage about 2, is used for supporting abrasive body passage 2, and the top of abrasive body passage 2 is arranged
Ball hole 3, bottom is provided with the quantity ball mouth equal with Screen assemblies 4, each ball mouth 4 and the afterbody of a Screen assemblies
Communicating, described multiple Screen assemblies are spaced setting from top to bottom, and by one, the top Screen assemblies to lower section inverse
The screen slot of two Screen assemblies is gradually reduced, and in same Screen assemblies, the width of all of screen slot is the most equal, wherein bottom
A Screen assemblies in the tabular not having screen slot.
The preferred Screen assemblies of the application is three, is the first Screen assemblies 5, second set gradually from top to bottom respectively
Screen assemblies 6 and the 3rd Screen assemblies 7 three, and first Screen assemblies the 5, second Screen assemblies 6 and the 3rd Screen assemblies 7 all in
Helical form, the first ball mouth that described ball mouth 4 includes being separated by the first baffle plate 8 and second baffle 9, the second ball mouth and
3rd ball mouth, the bottom of the first described Screen assemblies 5 is connected with the top of the first baffle plate 8, the second described Screen assemblies 6
Bottom be connected (welding) with the top of second baffle 9；The 3rd described ball mouth is provided with away from the side of second baffle 9
Three baffle plates 10, the described bottom of the 3rd Screen assemblies 7 is connected (welding) with the top of third gear plate 10；Described abrasive body leads to
The upper end in road 2 arranges fourth gear plate 11, and the first described Screen assemblies 5 and the upper end of the second Screen assemblies 6 are fixed on fourth gear
On plate 11；The lower end of described abrasive body passage 2 arranges fifth gear plate 12, the top of fifth gear plate 12 and the 3rd Screen assemblies 7
Lower surface fix (welding).
First Screen assemblies 5 described herein include many in the shape of a spiral and centrage overlap round steel, many round steel
Being increased successively to overall diameter by supporting center pillar 1, constitute screen slot between adjacent two round steel, the width of screen slot is d1；Described
Two Screen assemblies 6 include many in the shape of a spiral and centrage overlap round steel, many round steel are by supporting center pillar 1 to overall diameter successively
Increasing, constitute screen slot between adjacent two round steel, the width of this screen slot is d2, wherein d1 ＞ d2 ＞ 0, the second Screen assemblies 6
Round steel quantity is more than the round steel quantity of the first Screen assemblies 5, and all screen slot width of the first Screen assemblies 5 are the most equal, the
All screen slot width of two Screen assemblies 6 are the most equal.
Described ball hole 3 in small top and big bottom horn-like and for abrasive body is put in abrasive body passage 2,
Described ball mouth 4 is small top and big bottom, and the distance of ball mouth 4 bottom becomes big, the collection of abrasive body after being more beneficial for sorting.
The principle of the application is: the abrasive body of different sphere diameters is put in abrasive body passage 2 from ball hole 3, owing to scoring
Horn-like under mouthful 3 big lower ends, upper end, it is simple to abrasive body is put in abrasive body passage 2, and abrasive body drops in the first screening group
On part 5, a diameter of x of abrasive body, wherein the abrasive body of x >=d1 is stayed in the first Screen assemblies 5, and along the direction of round steel to
The lower end motion of one Screen assemblies 5, discharges from the first ball mouth and is collected, and the grinding of x ＜ d1 is dropped from the first Screen assemblies 5
To the second Screen assemblies 6, wherein the abrasive body of d2≤x ＜ d1 is stayed in the second Screen assemblies 6, and along the direction of round steel to
The lower end motion of two Screen assemblies 6, discharges from the second ball mouth and is collected, and the abrasive body of x ＜ d2 falls from the second Screen assemblies 6
Drop down onto in the 3rd Screen assemblies 7 and move downward along the 3rd Screen assemblies 7 and discharge from the 3rd ball mouth and collect, complete to grind
The separation and collection of body, in the application, the quantity of the round steel that the numerical value of d2 adjusts composition the second Screen assemblies 6 as required is adjusted
Whole.
The quantity of the Screen assemblies in the application is not limited to three, can set according to actual needs, constitutes except bottom
Screen assemblies outside round steel increase the most successively, to reduce the screen slot of Screen assemblies.Screen assemblies in the application is not
Being limited to make of round steel, as long as spiral helicine sorting part can be made, its cross sectional shape is not particularly limited.
Be not specifically noted in present specification is prior art or is capable of by existing technology, should
When being understood by, for those of ordinary skills, can be improved according to the above description or be converted, and all these
Modifications and variations all should belong to the protection domain of the application claims.
Claims (9)
1. a ball mill grinding body sorting device, it is characterised in that: include supporting center pillar (1), supplying spherical abrasive body to pass through
Spiral helicine abrasive body passage (2) and the multiple Screen assemblies being arranged in abrasive body passage (2), described support center pillar (1)
Running through abrasive body passage (2) upper and lower, be used for supporting abrasive body passage (2), the top of abrasive body passage (2) arranges ball hole (3),
Bottom is provided with the quantity ball mouth equal with Screen assemblies (4), the afterbody phase of each ball mouth (4) and a Screen assemblies
Logical, described multiple Screen assemblies are spaced setting from top to bottom, and second from the bottom to lower section by one, the top Screen assemblies
The screen slot of individual Screen assemblies is gradually reduced.
Ball mill grinding body sorting device the most according to claim 1, it is characterised in that: a Screen assemblies of bottom
In the tabular not having screen slot.
Ball mill grinding body sorting device the most according to claim 2, it is characterised in that: described Screen assemblies include by
The first Screen assemblies (5), the second Screen assemblies (6) and the 3rd Screen assemblies (7) top to bottm set gradually, and the first screening group
The most in the shape of a spiral, described ball mouth (4) includes by first gear for part (5), the second Screen assemblies (6) and the 3rd Screen assemblies (7)
The first ball mouth, the second ball mouth and the 3rd ball mouth that plate (8) and second baffle (9) separate, the first described screening group
The bottom of part (5) is connected with the top of the first baffle plate (8), the bottom of described the second Screen assemblies (6) and second baffle (9)
Top connects.
Ball mill grinding body sorting device the most according to claim 3, it is characterised in that: the 3rd described ball mouth away from
The side of second baffle (9) is provided with third gear plate (10), the bottom of the 3rd described Screen assemblies (7) and third gear plate (10)
Top connect.
5. according to the ball mill grinding body sorting device described in claim 3 or 4, it is characterised in that: the first described screening group
Part (5) include many in the shape of a spiral and centrage overlap round steel, many round steel are increased to overall diameter successively by supporting center pillar (1)
Greatly, screen slot is constituted between adjacent two round steel；Described the second Screen assemblies (6) includes many, and in the shape of a spiral and centrage overlaps
Round steel, many round steel are increased to overall diameter successively by supporting center pillar (1), between adjacent two round steel constitute screen slot, second sieve
The round steel quantity of subassembly (6) is more than the round steel quantity of the first Screen assemblies (5), and all screen slot width of the first Screen assemblies
Spending the most equal, all screen slot width of the second Screen assemblies are the most equal.
Ball mill grinding body sorting device the most according to claim 5, it is characterised in that: described abrasive body passage (2)
Upper end fourth gear plate (11) is set, described the first Screen assemblies (5) and the upper end of the second Screen assemblies (6) are fixed on the 4th
On baffle plate (11).
Ball mill grinding body sorting device the most according to claim 5, it is characterised in that: described abrasive body passage (2)
Lower end fifth gear plate (12) is set, the lower surface of the top of fifth gear plate (12) and the 3rd Screen assemblies (7) is fixed.
8. according to the ball mill grinding body sorting device described in any one of Claims 1-4, it is characterised in that: described goal
Mouthful (3) are in small top and big bottom horn-like.
9. according to the ball mill grinding body sorting device described in any one of Claims 1-4, it is characterised in that: described goes out ball
Mouth (4) is small top and big bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678239.3A CN106111544B (en) | 2016-08-17 | 2016-08-17 | Ball mill grinding body sorting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678239.3A CN106111544B (en) | 2016-08-17 | 2016-08-17 | Ball mill grinding body sorting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106111544A true CN106111544A (en) | 2016-11-16 |
| CN106111544B CN106111544B (en) | 2018-01-05 |
Family
ID=57278587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678239.3A Active CN106111544B (en) | 2016-08-17 | 2016-08-17 | Ball mill grinding body sorting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106111544B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617571A (en) * | 2017-11-01 | 2018-01-23 | 成都大学 | Fruit sieving machine by classification |
| CN107690961A (en) * | 2017-11-23 | 2018-02-16 | 安徽理工大学 | A kind of electronic assisting in fruit picking device of double freedom and fruit picking component |
| CN108557306A (en) * | 2018-04-25 | 2018-09-21 | 何战战 | A kind of working method of medical vials separating and reclaiming device |
| CN108672302A (en) * | 2018-07-13 | 2018-10-19 | 苏州大学 | A kind of bolt screening machine |
| CN111014045A (en) * | 2019-12-09 | 2020-04-17 | 温州知束贸易有限公司 | Anti-blocking device for inlet of steel ball sorting machine |
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| GB232497A (en) * | 1924-09-23 | 1925-04-23 | Anthracite Separator Co | Adjustable spiral separators |
| EP0223639A1 (en) * | 1985-10-23 | 1987-05-27 | EUROPEENNE DE RETRAITEMENT DE CATALYSEURS (en abrégé EURECAT) | Method of and device for putting apart spherical materials possibly showing imperfections |
| CN201596629U (en) * | 2010-01-25 | 2010-10-06 | 天水华圆制药设备科技有限责任公司 | Spiral pellet selecting machine |
| CN103302034A (en) * | 2012-03-14 | 2013-09-18 | 曼盛包装（上海）有限公司 | Automatic screening equipment of injection product and material rod |
| CN205995803U (en) * | 2016-08-17 | 2017-03-08 | 南京西普水泥工程集团有限公司 | Ball mill grinding body sorting device |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB232497A (en) * | 1924-09-23 | 1925-04-23 | Anthracite Separator Co | Adjustable spiral separators |
| EP0223639A1 (en) * | 1985-10-23 | 1987-05-27 | EUROPEENNE DE RETRAITEMENT DE CATALYSEURS (en abrégé EURECAT) | Method of and device for putting apart spherical materials possibly showing imperfections |
| CN201596629U (en) * | 2010-01-25 | 2010-10-06 | 天水华圆制药设备科技有限责任公司 | Spiral pellet selecting machine |
| CN103302034A (en) * | 2012-03-14 | 2013-09-18 | 曼盛包装（上海）有限公司 | Automatic screening equipment of injection product and material rod |
| CN205995803U (en) * | 2016-08-17 | 2017-03-08 | 南京西普水泥工程集团有限公司 | Ball mill grinding body sorting device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617571A (en) * | 2017-11-01 | 2018-01-23 | 成都大学 | Fruit sieving machine by classification |
| CN107617571B (en) * | 2017-11-01 | 2023-11-17 | 成都大学 | Fruit classification screening machine |
| CN107690961A (en) * | 2017-11-23 | 2018-02-16 | 安徽理工大学 | A kind of electronic assisting in fruit picking device of double freedom and fruit picking component |
| CN107690961B (en) * | 2017-11-23 | 2024-06-21 | 安徽理工大学 | Double-freedom-degree electric auxiliary fruit picking device and fruit picking assembly |
| CN108557306A (en) * | 2018-04-25 | 2018-09-21 | 何战战 | A kind of working method of medical vials separating and reclaiming device |
| CN108557306B (en) * | 2018-04-25 | 2020-11-27 | 高玮 | Working method of medical bottle separation and recovery device |
| CN108672302A (en) * | 2018-07-13 | 2018-10-19 | 苏州大学 | A kind of bolt screening machine |
| WO2020010733A1 (en) * | 2018-07-13 | 2020-01-16 | 苏州大学张家港工业技术研究院 | Bolt screening machine |
| CN108672302B (en) * | 2018-07-13 | 2020-04-07 | 苏州大学 | Bolt screening machine |
| US11325162B2 (en) | 2018-07-13 | 2022-05-10 | Soochow University | Bolt screening machine |
| CN111014045A (en) * | 2019-12-09 | 2020-04-17 | 温州知束贸易有限公司 | Anti-blocking device for inlet of steel ball sorting machine |
| CN111014045B (en) * | 2019-12-09 | 2021-08-03 | 海盐嘉盛瑞科技股份有限公司 | Anti-blocking device for inlet of steel ball sorting machine |
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| Publication number | Publication date |
|---|---|
| CN106111544B (en) | 2018-01-05 |
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