CN114682482A - Tungsten ore mining is with ore dressing segmentation device - Google Patents
Tungsten ore mining is with ore dressing segmentation device Download PDFInfo
- Publication number
- CN114682482A CN114682482A CN202210210566.1A CN202210210566A CN114682482A CN 114682482 A CN114682482 A CN 114682482A CN 202210210566 A CN202210210566 A CN 202210210566A CN 114682482 A CN114682482 A CN 114682482A
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- China
- Prior art keywords
- cylinder
- motor
- tungsten ore
- inner circular
- outer cylinder
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Links
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 40
- 239000010937 tungsten Substances 0.000 title claims abstract description 40
- 238000005065 mining Methods 0.000 title claims description 15
- 230000011218 segmentation Effects 0.000 title claims description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000009434 installation Methods 0.000 claims description 13
- 239000004575 stone Substances 0.000 abstract description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 10
- 235000017491 Bambusa tulda Nutrition 0.000 description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 10
- 241001330002 Bambuseae Species 0.000 description 9
- 239000011425 bamboo Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 241000209128 Bambusa Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- -1 and is inefficient Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
- B07B1/26—Revolving drums with additional axial or radial movement of the drum
-
- 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
- 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
-
- 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
-
- 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
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
Landscapes
- Crushing And Grinding (AREA)
Abstract
The invention discloses a beneficiation and subdivision device for tungsten ore exploitation, which relates to the technical field of tungsten ore exploitation and comprises a bottom plate, wherein mounting rods are respectively arranged at the tops of the bottom plate, which are close to two ends of the bottom plate, one mounting rod is provided with a motor, the other mounting rod is provided with a rotating seat, an outer cylinder is fixed between an output shaft of the motor and a rotating shaft on the rotating seat, and a plurality of inner circular mesh cylinders are arranged in the outer cylinder; the outer cylinder consists of an upper sub-cylinder and a lower sub-cylinder which are symmetrically arranged, each inner circular mesh cylinder consists of an upper sub-cylinder and a lower sub-cylinder which are symmetrically arranged, and the motor and the rotating seat are both arranged on the mounting rod through the vibration mechanism; according to the invention, the mesh sizes of the inner circular mesh cylinders are sequentially increased inwards, and the innermost inner circular mesh cylinder is connected with the outer circular mesh cylinder through the dismounting mechanism, so that the dismounting of each inner circular mesh cylinder and each outer circular mesh cylinder is realized, the motor is matched to drive the outer circular mesh cylinder and the inner circular mesh cylinders to rotate, and then the vibration mechanism is matched to finally realize better subdivision on the tungsten ore crude stone, so that the efficiency is higher.
Description
Technical Field
The invention relates to the technical field of tungsten ore mining, in particular to a mineral separation and subdivision device for tungsten ore mining.
Background
Tungsten is a metal element, the element symbol is W, atomic number is 74, VIB group of sixth cycle in the periodic table of elements, tungsten mainly is hexavalent cation in the nature, the electrovalence is high, the polarizability is strong, easily form complex anion, tungsten ore needs to carry out the subdivision of size to the tungsten ore raw stone of quarrying out in the exploitation process to subsequent differentiation, however, the current mode all is that the manual work subdivides the tungsten ore raw stone, and is inefficient, wastes time and energy, for this reason, needs to improve.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a beneficiation and subdivision device for tungsten ore exploitation, and solves the problems in the background art.
In order to achieve the purpose, the invention is realized by the following technical scheme: the ore dressing subdivision device for tungsten ore mining comprises a bottom plate, wherein mounting rods are respectively mounted at the tops of the bottom plate close to two ends of the bottom plate, a motor is mounted on one mounting rod, a rotating seat is mounted on the other mounting rod, an outer cylinder is fixed between an output shaft of the motor and a rotating shaft on the rotating seat, and a plurality of inner circular mesh cylinders are mounted in the outer cylinder;
the outer cylinder comprises two upper and lower symmetrical branch drums, and each inner circular net cylinder comprises two upper and lower symmetrical branch drums, the mesh size of the inner circular net cylinders is increased inwards in sequence, and the innermost inner circular net cylinder is connected with the outer cylinder through a dismounting mechanism so as to realize dismounting of each inner circular net cylinder and the outer cylinder.
The tungsten ore mining and mineral separation device is adopted, wherein, preferably, the motor and the rotating seat are both arranged on the mounting rod through a vibration mechanism.
Adopt ore dressing segmentation device as foretell tungsten ore is opened, wherein, preferably, vibrations mechanism includes the slide of slidable mounting on the installation pole, and the motor all passes through mounting panel and slide fixed connection with the rotation seat, the top of installation pole is provided with the limiting plate, and all is provided with the spring of cover on the installation pole between the bottom of limiting plate and the top of slide, the bottom of slide and the top of bottom plate.
In the ore dressing and subdividing device for tungsten ore mining, preferably, the outer surface of the mounting rod is provided with an external thread, and the limiting plate is provided with a screw hole for screwing the limiting plate on the mounting rod.
The ore dressing subdividing device is used for tungsten ore mining, wherein preferably, fixing plates are fixed at the end parts of the output shaft of the motor and the rotating shaft of the rotating seat, and the fixing plates are installed at the two ends of the sub-cylinder below the outer cylinder through bolts.
As foretell tungsten ore opens and adopts ore dressing segmentation device, wherein, preferentially, dismouting mechanism is including fixing the screw rod in the most inside branch cylinder top outside, and divide cylinder and all the other through-holes that all offer on each branch cylinder that supply the screw rod to wear out, spiral shell closes on the screw rod and has a plurality of nuts that support tightly in the branch cylinder outside and all the other each branch cylinder outside, and divides cylinder side and interior cylinder two branch cylinder sides about, all outwards extend and pass through bolt fixed connection.
Compared with the prior art, the invention has the following beneficial effects: the mesh size of a plurality of interior cylinder nets inwards increases in proper order, and is connected through dismouting mechanism between the innermost interior cylinder nets section of thick bamboo to the outer cylinder to realize the dismouting of each interior cylinder nets section of thick bamboo and outer cylinder, cooperate the rotation that the motor drove outer cylinder and interior cylinder nets section of thick bamboo, cooperate vibrations mechanism again, finally realize carrying out better segmentation to the former stone of tungsten ore, efficiency is higher.
Drawings
FIG. 1 is a first perspective view of the present invention;
FIG. 2 is a second perspective view of the present invention;
FIG. 3 is a third perspective view of the present invention;
FIG. 4 is a partial perspective view of the first embodiment of the present invention;
FIG. 5 is a partial perspective view of the second embodiment of the present invention;
FIG. 6 is a partial perspective view of the present invention;
FIG. 7 is a partial exploded view of the first aspect of the present invention;
FIG. 8 is a partial exploded view of the second aspect of the present invention;
FIG. 9 is a cross-sectional view in elevation of the present invention;
fig. 10 is a cross-sectional view of a side view of the present invention.
In the figure: 1. a base plate; 2. mounting a rod; 3. a motor; 4. a rotating seat; 5. an outer cylinder; 6. an inner cylinder; 7. a slide plate; 8. a limiting plate; 9. a spring; 10. a fixing plate; 11. a screw; 12. and a nut.
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.
Referring to fig. 1-10, the present invention provides a technical solution: a mineral separation subdivision device for tungsten ore mining comprises a bottom plate 1, wherein mounting rods 2 are respectively arranged at the tops of the bottom plate 1 close to two ends of the bottom plate, a motor 3 is arranged on one mounting rod 2, a rotating seat 4 is arranged on the other mounting rod 2, an outer cylinder 5 is fixed between an output shaft of the motor 3 and a rotating shaft on the rotating seat 4, and a plurality of inner circular mesh cylinders 6 are arranged in the outer cylinder 5;
the outer cylinder 5 is composed of upper and lower two symmetrically arranged sub-cylinders, each inner cylinder 6 is composed of upper and lower two symmetrically arranged sub-cylinders, the mesh sizes of the inner cylinders 6 are sequentially increased inwards, and the innermost inner cylinder 6 is connected to the outer cylinder 5 through a dismounting mechanism so as to realize dismounting of each inner cylinder 6 and the outer cylinder 5.
The motor 3 and the rotating seat 4 are both arranged on the mounting rod 2 through a vibration mechanism.
Vibrations mechanism includes slide 7 of slidable mounting on installation pole 2, and motor 3 all passes through mounting panel and slide 7 fixed connection with rotating seat 4, and the top of installation pole 2 is provided with limiting plate 8, and all is provided with spring 9 of cover on installation pole 2 between the bottom of limiting plate 8 and the top of slide 7, the bottom of slide 7 and the top of bottom plate 1, like this for the former stone of tungsten ore can also vibrate when carrying out the subdivision for the former stone of tungsten ore.
The surface of installation pole 2 is provided with the external screw thread, and offers on the limiting plate 8 and supply it spiral shell to close the screw on installation pole 2, like this, not only can realize spacing to spring 9, can also be convenient for to the dismouting of motor 3 and rotation seat 4, and finally, can also change spring 9's compression degree according to the height of limiting plate 8 on installation pole 2, and then change the vibrations dynamics to the former stone of tungsten ore, serve multiple purposes at a stroke.
The output shaft of motor 3 and the tip of the axis of rotation of rotating seat 4 all are fixed with fixed plate 10, and fixed plate 10 passes through the bolt and installs the both ends of branch drum in outer drum 5 below, be convenient for the dismantlement of outer drum 5, and then more conveniently unload the former stone of tungsten ore, and simultaneously, when making motor 3 drive outer drum 5 and rotate, belong to eccentric rotation, like this, when motor 3 stop work, the former stone of tungsten ore can pile up the bottom at outer drum 5 and inner circular net section of thick bamboo 6 through self gravity, prevent that outer drum 5 and inner circular net section of thick bamboo 6 are when dismantling, the former stone of tungsten ore drops on the ground.
The disassembling and assembling mechanism comprises a screw rod 11 fixed on the outer side of the top of the innermost cyclotomic screen cylinder, through holes for the screw rod 11 to penetrate through are formed in the cyclotomic cylinder and each of the other cyclotomic screen cylinders, a plurality of nuts 12 abutting against the outer sides of the cyclotomic cylinder and each of the other cyclotomic screen cylinders are screwed on the screw rod 11, the side edges of the upper cyclotomic cylinder and the lower cyclotomic screen cylinder and the side edges of the upper cyclotomic screen cylinder and the lower cyclotomic screen cylinder of the inner cyclotomic screen cylinder 6 extend outwards and are fixedly connected through bolts, the crude tungsten ore is subdivided, the crude tungsten ore is placed in the innermost cyclotomic screen cylinder 6, then the inner cyclotomic screen cylinders 6 with different mesh sizes are sequentially installed on the screw rod 11 and are locked through the nuts 12, finally, the outer cylinder 5 is installed on the screw rod 11, the outer cylinder 5 is installed between the rotating base 4 and the motor 3, the motor 3 is powered by an external power supply, is controlled by an external controller, the motor 3 is started to drive the outer cylinder 5 and the inner cyclotomic screen cylinder 6 to rotate, the realization is to the segmentation of the former stone of tungsten ore, interior round net section of thick bamboo 6, the cooperation of screw rod 11 and nut 12, can have more the actual demand to the former stone segmentation of tungsten ore, install the interior round net section of thick bamboo 6 of different quantity, finally, mesh size through a plurality of interior round net section of thick bamboos 6 inwards increases in proper order, make the former stone of tungsten ore in staying in interior round net section of thick bamboo 6 reduce from inside to outside in proper order, when unloading, dismantle the bolt on outer cylinder 5 and the interior round net section of thick bamboo 6 in with, dismantle nut 12 again, therefore, just can unload the former stone of tungsten ore from outside to inside in proper order, finally, the realization is higher to the segmentation efficiency of the former stone of tungsten ore, and be convenient for unload, can extensively promote and use.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a tungsten ore mining is with ore dressing segmentation device which characterized in that: the novel motor comprises a base plate (1), wherein mounting rods (2) are respectively arranged at the tops of the base plate (1) close to the two ends of the base plate, a motor (3) is arranged on one mounting rod (2), a rotating seat (4) is arranged on the other mounting rod (2), an outer cylinder (5) is fixed between an output shaft of the motor (3) and a rotating shaft on the rotating seat (4), and a plurality of inner circular mesh cylinders (6) are arranged in the outer cylinder (5);
the outer cylinder (5) comprises two upper and lower symmetrical branch drums, and each inner circular net cylinder (6) comprises two upper and lower symmetrical branch drums, the mesh size of a plurality of inner circular net cylinders (6) is inwards increased in sequence, and the innermost inner circular net cylinder (6) is connected with the outer cylinder (5) through a dismounting mechanism, so that the dismounting of each inner circular net cylinder (6) and the outer cylinder (5) is realized.
2. The beneficiation and subdivision device for tungsten ore mining according to claim 1, characterized in that: the motor (3) and the rotating seat (4) are both installed on the installation rod (2) through a vibration mechanism.
3. The beneficiation and subdivision device for tungsten ore mining according to claim 1, characterized in that: vibrations mechanism includes slide (7) of slidable mounting on installation pole (2), and motor (3) and rotation seat (4) all through mounting panel and slide (7) fixed connection, the top of installation pole (2) is provided with limiting plate (8), and all is provided with spring (9) of cover on installation pole (2) between the top of the bottom of limiting plate (8) and the top of slide (7), the bottom of slide (7) and bottom plate (1).
4. The beneficiation and subdividing device for tungsten ore mining according to claim 3, wherein: the outer surface of the mounting rod (2) is provided with external threads, and the limiting plate (8) is provided with a screw hole for screwing the limiting plate on the mounting rod (2).
5. The beneficiation and subdividing device for tungsten ore mining according to claim 4, wherein: and fixing plates (10) are fixed at the end parts of the output shaft of the motor (3) and the rotating shaft of the rotating seat (4), and the fixing plates (10) are arranged at the two ends of the sub-cylinder below the outer cylinder (5) through bolts.
6. The beneficiation and subdivision device for tungsten ore mining according to claim 5, characterized in that: the dismouting mechanism is including fixing screw rod (11) in the most inside branch cylinder top outside, and divide and all set up the through-hole that supplies screw rod (11) to wear out on drum and all the other each branch cylinder, spiral shell is closed on screw rod (11) has a plurality of to support tightly in the nut (12) that divide the drum outside and all the other each branch cylinder outsides, and divides two branch cylinder sides all outwards to extend and pass through bolt fixed connection about cylinder side and interior cylinder (6) from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210566.1A CN114682482A (en) | 2022-03-03 | 2022-03-03 | Tungsten ore mining is with ore dressing segmentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210566.1A CN114682482A (en) | 2022-03-03 | 2022-03-03 | Tungsten ore mining is with ore dressing segmentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114682482A true CN114682482A (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210210566.1A Pending CN114682482A (en) | 2022-03-03 | 2022-03-03 | Tungsten ore mining is with ore dressing segmentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114682482A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205673170U (en) * | 2016-06-08 | 2016-11-09 | 邢台职业技术学院 | A kind of construction vibrating sieving machine |
| CN208407635U (en) * | 2018-04-26 | 2019-01-22 | 河南森隆动物保健品有限公司 | A kind of oscillation screening plant |
| CN209271872U (en) * | 2018-10-10 | 2019-08-20 | 贵州天弘矿业股份有限公司 | Screening plant is used in a kind of exploitation of barite |
| CN209886135U (en) * | 2019-01-29 | 2020-01-03 | 吉林省益信粮食贸易有限公司 | Screening plant is used in grain processing |
| CN210058901U (en) * | 2019-06-19 | 2020-02-14 | 江西石城县南方有色选矿设备制造有限公司 | Rotary tungsten ore dressing device |
| CN210121553U (en) * | 2019-07-03 | 2020-03-03 | 江西宏大化工有限公司 | Modified starch prevents stifled screening machine |
| CN211311401U (en) * | 2019-12-11 | 2020-08-21 | 长春涌泉压榨豆油有限公司 | Soybean softening installation is used in soybean oil production |
| CN212842647U (en) * | 2020-09-14 | 2021-03-30 | 安化县司徒铺钨矿 | Quick drying device is used in processing of tungsten concentrate |
| CN214211223U (en) * | 2021-01-18 | 2021-09-17 | 郑州大学 | Screening device for silt impurities |
| CN215198066U (en) * | 2020-12-25 | 2021-12-17 | 西京学院 | Civil engineering multilayer drum-type screening machine |
-
2022
- 2022-03-03 CN CN202210210566.1A patent/CN114682482A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205673170U (en) * | 2016-06-08 | 2016-11-09 | 邢台职业技术学院 | A kind of construction vibrating sieving machine |
| CN208407635U (en) * | 2018-04-26 | 2019-01-22 | 河南森隆动物保健品有限公司 | A kind of oscillation screening plant |
| CN209271872U (en) * | 2018-10-10 | 2019-08-20 | 贵州天弘矿业股份有限公司 | Screening plant is used in a kind of exploitation of barite |
| CN209886135U (en) * | 2019-01-29 | 2020-01-03 | 吉林省益信粮食贸易有限公司 | Screening plant is used in grain processing |
| CN210058901U (en) * | 2019-06-19 | 2020-02-14 | 江西石城县南方有色选矿设备制造有限公司 | Rotary tungsten ore dressing device |
| CN210121553U (en) * | 2019-07-03 | 2020-03-03 | 江西宏大化工有限公司 | Modified starch prevents stifled screening machine |
| CN211311401U (en) * | 2019-12-11 | 2020-08-21 | 长春涌泉压榨豆油有限公司 | Soybean softening installation is used in soybean oil production |
| CN212842647U (en) * | 2020-09-14 | 2021-03-30 | 安化县司徒铺钨矿 | Quick drying device is used in processing of tungsten concentrate |
| CN215198066U (en) * | 2020-12-25 | 2021-12-17 | 西京学院 | Civil engineering multilayer drum-type screening machine |
| CN214211223U (en) * | 2021-01-18 | 2021-09-17 | 郑州大学 | Screening device for silt impurities |
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Application publication date: 20220701 |