CN108654743A - A kind of roll-type natural graphite fine gtinding screening plant - Google Patents
A kind of roll-type natural graphite fine gtinding screening plant Download PDFInfo
- Publication number
- CN108654743A CN108654743A CN201810440302.9A CN201810440302A CN108654743A CN 108654743 A CN108654743 A CN 108654743A CN 201810440302 A CN201810440302 A CN 201810440302A CN 108654743 A CN108654743 A CN 108654743A
- Authority
- CN
- China
- Prior art keywords
- grinding
- sieve
- card slot
- roll
- driving motor
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/10—Crushing or disintegrating by roller mills with a roller co-operating with a stationary member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a kind of roll-type natural graphite fine gtinding screening plants, including pedestal, grinding case, grinding case sieve, the second driving motor and picking-up container, it is installed with grinding motor on rear side of the grinding groove, interference fit on the output shaft of motor is ground and mixing roll is installed；It is also tiltedly installed with the second card slot and the first card slot on the left and right sides inner wall of the grinding case, sieve is slidably fitted between the first card slot and the second card slot.It is rotatablely equipped with ball in the outer circle of mixing roll, keeps grinding more abundant to further increase the effect of grinding by the squeezing action of ball, abrasive grains sophistication higher；Pass through translational block translational motion, to drive sieve to be slided between the first card slot and the second card slot indirectly, greatly improve the breakneck acceleration of the graphite particle after grinding, simultaneously by sieve be arranged to it is skewed to further increase graphite particle sieve turnover rate, it effectively avoids graphite particle from the case where plug-hole occur, reduces the frequency of cleaning sieve.
Description
Technical field
The present invention relates to a kind of grinding device, specifically a kind of roll-type natural graphite fine gtinding screening plant.
Background technology
Graphite and carbon product have excellent performance, and application is increasingly extensive, and production capacity and benefit present a rapidly rising trend.
2011, Chinese graphite and carbon product industry development were rapid, and enterprise inside the circle is higher to the management control ability of cost,
Profitability is stronger.National statistics office data shows that 2011, China's graphite and carbon product industry realized total industrial output value
1675.64 hundred million yuan;It realizes 1677.65 hundred million yuan of income from sales, increases by 40.58% on a year-on-year basis;109.59 hundred million yuan of total value is generated profit, together
Than increasing by 50.87%.With the continuous popularization of application, see that Chinese graphite and the competition of carbon product industry are also growing more intense.
Graphite particle grinding device is by the mutual extruded anisotropic graphite particle of two groups of abrasive wheels at present, and current graphite particle is ground
There are larger gaps between abrasive wheel and grinding chamber interior wall for device, so that a part of graphite particle is drained to along gap
In following picking-up container, therefore graphite is caused to grind non-uniform phenomenon, to cause the processes such as secondary grinding or sieving, prolonged
Process time is grown, productivity is low.
Invention content
The purpose of the present invention is to provide a kind of roll-type natural graphite fine gtinding screening plants, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides the following technical solutions：
A kind of roll-type natural graphite fine gtinding screening plant, including pedestal, grinding case, grinding case sieve, the second driving motor
And picking-up container, the pedestal are equipped with grinding case, grind and are bolted to connection between case and pedestal, it is described to grind the upper of case
Side or so two parts are symmetrically provided with left graphite raw material import and right graphite raw material import, and grinding case bosom position is horizontal
It is welded with balladeur train, the top of balladeur train is divided into grinding chamber, and lower part is divided into screening chamber, and the grinding case is internally provided with grinding groove, described
It is installed with grinding motor on rear side of grinding groove, the output shaft of motor is ground forward and stretches into inside grinding groove, grind motor
Interference fit is equipped with mixing roll on output shaft, and the upper center position of the grinding case, which is fixed by the bracket, is equipped with the first drive
Dynamic motor, the output shaft of the first driving motor is straight down and the output shaft of the first driving motor pierces into inside grinding case, and first
The output shaft lower end of driving motor is fixedly connected with main shaft by shaft coupling, and the balladeur train is equipped with sliding slot, sliding slot internal slide
Sliding block is installed, translational block is fixedly connected on the downside of sliding block, translational block is internally provided with circular trough, and translation is pierced into the lower end of main shaft
In circular trough inside the block and lower end of translational block interference fit is equipped with eccentric wheel, the hinged company of being equipped in the downside of translational block
Bar is also tiltedly installed with the second card slot and the first card slot on the left and right sides inner wall of the grinding case, the first card slot and the second card
Sieve is slidably fitted between slot, the chassis interior center is hollow-core construction, and chassis interior center is fixed by the bracket
Second driving motor is installed, lead screw is installed with by shaft coupling on the both ends output shaft of the second driving motor, lead screw
The other end is rotatably installed in by bearing on the inner wall of pedestal, and equal screw thread is equipped with thread slider, spiral shell on the lead screw of both sides
The upside of line sliding block is equipped with supporting rod by being welded and fixed, supporting rod straight up and pierce into grinding case inside, the pedestal
Upper surface be provided with limit sliding chutes, supporting rod is located inside the limit sliding chutes of pedestal, and the upper end of supporting rod is installed with splicing
Case, the picking-up container side of the left and right sides are close to adjacent, and the left and right sides of the grinding case is provided with chamber door.
As a further solution of the present invention：Embedded installation in the left graphite raw material import and right graphite raw material import
There is a conveying pipeline, screw thread is equipped with sealing cover on conveying pipeline.
As further scheme of the invention：The grinding groove is circular trough and grinding groove is equipped with two groups.
As further scheme of the invention：It is rotatablely equipped with ball in the outer circle of the mixing roll.
As further scheme of the invention：The angle of inclination of first card slot and the second card slot is 55-60 °.
As further scheme of the invention：The upper and lower ends of the sieve are respectively connected with resetting spring, sieve upper table
Face is provided with round sieve and sieve is 300 mesh screens.
As further scheme of the invention：Second driving motor is servo motor and the second driving motor is single
Phase asynchronous motor.
Compared with prior art, the beneficial effects of the invention are as follows：It is rotatablely equipped with ball in the outer circle of mixing roll, is passed through
The squeezing action of ball keeps grinding more abundant to further increase the effect of grinding, abrasive grains sophistication higher；It is logical
Translational block translational motion is crossed, to drive sieve to be slided between the first card slot and the second card slot indirectly, after greatly improving grinding
Graphite particle breakneck acceleration, while sieve being arranged to skewed to further increase flowing of the graphite particle in sieve
Rate effectively avoids graphite particle from the case where plug-hole occur, reduces the frequency of cleaning sieve；Lead screw is driven by the second driving motor
Start to rotate, screw-thread fit between lead screw and thread slider, to make thread slider move outward, to drive picking-up container from
It is exported in chamber door, to which the graphite particle after screening grinding integrally exports, greatly improves the efficiency of discharging, avoid graphite particle
It is detained overstocked situation inside grinding case, it is time saving and energy saving.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of roll-type natural graphite fine gtinding screening plant.
Fig. 2 is a kind of schematic diagram of mixing roll in roll-type natural graphite fine gtinding screening plant.
Fig. 3 is the schematic diagram that the portions A amplify in a kind of roll-type natural graphite fine gtinding screening plant.
In figure：1- pedestals, 2- grindings case, the left graphite raw material imports of 3-, the right graphite raw material imports of 4-, 5- balladeur trains, 6- grindings
Chamber, 7- screenings chamber, 8- grinding grooves, 9- grindings motor, 10- mixing rolls, the first driving motors of 11-, 12- main shafts, 13- sliding slots, 14-
Sliding block, 15- translational blocks, 16- eccentric wheels, 17- connecting rods, the first card slots of 18-, the second card slots of 19-, 20- sieves, 21- second drive
Motor, 22- lead screws, 23- thread sliders, 24- supporting rods, 25- picking-up containers, 26- chamber doors.
Specific implementation mode
The technical solution of this patent is described in more detail With reference to embodiment.
Please refer to Fig.1-3, a kind of roll-type natural graphite fine gtinding screening plant, including pedestal 1, grinding case 2, grinding case
Sieve 20, the second driving motor 21 and picking-up container 25, the pedestal 1 are equipped with grinding case 2, grind and pass through between case 2 and pedestal 1
Bolt is fixedly connected, it is described grinding case 2 upside left and right two parts be symmetrically provided with left graphite raw material import 3 and right graphite raw material into
Mouthfuls 4, embedded in left graphite raw material import 3 and right graphite raw material import 4 to be equipped with conveying pipeline, screw thread is equipped with close on conveying pipeline
Capping, 2 bosom position level of the grinding case are welded with balladeur train 5, and the top of balladeur train 5 is divided into grinding chamber 6, and lower part is divided into sieve
Chamber 7, the grinding case 2 is selected to be internally provided with grinding groove 8, grinding groove 8 is circular trough and grinding groove 8 is equipped with two groups, the grinding groove 8
Rear side is installed with grinding motor 9, grinds the output shaft of motor 9 forward and stretches into inside grinding groove 8, grinds the defeated of motor 9
Interference fit is equipped with mixing roll 10 on shaft, and ball is rotatablely equipped in the outer circle of mixing roll 10, is made by the extruding of ball
With to further increase the effect of grinding, keeping grinding more abundant, abrasive grains sophistication higher.
The upper center position of the grinding case 2, which is fixed by the bracket, is equipped with the first driving motor 11, the first driving electricity
The output shaft of machine 11 is straight down and the output shaft of the first driving motor 11 pierces into inside grinding case 2, the first driving motor 11
Output shaft lower end is fixedly connected with main shaft 12 by shaft coupling, and the balladeur train 5 is equipped with sliding slot 13, the installation of 13 internal slide of sliding slot
There are sliding block 14, the downside of sliding block 14 to be fixedly connected with translational block 15, translational block 15 is internally provided with circular trough, and the lower end of main shaft 12 is worn
Eccentric wheel 16 is installed into the circular trough inside the translational block 15 and lower end of translational block 15 interference fit, passes through the first driving electricity
The rotation of machine 11 drives 15 or so translational motion of translational block, the downside of translational block 15 hinged indirectly to be rotated with movable eccentric wheel 16
Connecting rod 17 is installed, the second card slot 19 and the first card slot 18 are also tiltedly installed on the left and right sides inner wall of the grinding case 2, the
The angle of inclination of one card slot 18 and the second card slot 19 is 55-60 °, and sieve is slidably fitted between the first card slot 18 and the second card slot 19
The upper and lower ends of net 20, sieve 20 are respectively connected with resetting spring, and 20 upper surface of sieve is provided with round sieve and sieve 20 is 300 mesh
Sieve, by 15 translational motion of translational block, to drive sieve 20 to be slided between the first card slot 18 and the second card slot 19 indirectly,
The breakneck acceleration of the graphite particle after grinding is greatly improved, while sieve 20 being arranged to skewed to further increase graphite
Particle effectively avoids graphite particle from the case where plug-hole occur in the turnover rate of sieve 20, reduces the frequency of cleaning sieve 20.
1 inside center of the pedestal is hollow-core construction, and 1 inner hub location of pedestal, which is fixed by the bracket, is equipped with the second drive
Dynamic motor 21, the second driving motor 21 is servo motor and the second driving motor 21 is monopole asynchronous motor, the second driving electricity
Lead screw 22 is installed with by shaft coupling on the both ends output shaft of machine 21, the other end of lead screw 22 is rotatably installed in by bearing
On the inner wall of pedestal 1, equal screw thread is equipped with thread slider 23 on the lead screw 22 of both sides, and the upside of thread slider 23 passes through weldering
Connect and be installed with supporting rod 24, supporting rod 24 straight up and pierce into grinding case 2 inside, the upper surface of the pedestal 1 is provided with
Limit sliding chutes, supporting rod 24 are located inside the limit sliding chutes of pedestal 1, and limit sliding chutes play position-limiting action to supporting rod 24, support
The upper end of bar 24 is installed with picking-up container 25, and adjacent, the left and right of the grinding case 2 is close in 25 side of picking-up container of the left and right sides
Both sides are provided with chamber door 26, and chamber door 26 is passed in and out for picking-up container 25, and after the completion of grinding is screened, graphite particle drops into picking-up container
In 25, it is then electrified to that the second driving motor 21 is made to start to work, the second driving motor 21 drives lead screw 22 to start to rotate, lead screw 22
The screw-thread fit between thread slider 23, to make thread slider 23 move outward, to drive picking-up container 25 from chamber door 26
Middle export greatly improves the efficiency of discharging, graphite particle is avoided to grind to which the graphite particle after screening grinding integrally exports
Overstocked situation is detained in 2 inside of tumbling barrel, time saving and energy saving.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
Formula, one skilled in the relevant art within the scope of knowledge, can also be under the premise of not departing from this patent objective
It makes a variety of changes.
Claims (7)
1. a kind of roll-type natural graphite fine gtinding screening plant, including pedestal（1）, grinding case（2）, grinding case sieve（20）、
Second driving motor（21）And picking-up container（25）, it is characterised in that：The pedestal（1）It is equipped with grinding case（2）, grind case（2）
With pedestal（1）Between be bolted to connection, the grinding case（2）Upside left and right two parts be symmetrically provided with left graphite raw material
Import（3）With right graphite raw material import（4）, the grinding case（2）Bosom position level is welded with balladeur train（5）, balladeur train（5）
Top be divided into grinding chamber（6）, lower part is divided into screening chamber（7）, the grinding case（2）It is internally provided with grinding groove（8）, the grinding
Slot（8）Rear side is installed with grinding motor（9）, grind motor（9）Output shaft forward and stretch into grinding groove（8）Inside is ground
Electric mill machine（9）Output shaft on interference fit mixing roll is installed（10）, the upper center position of the grinding case 2 passes through holder
It is installed with the first driving motor 11, the output shaft of the first driving motor 11 is straight down and the output of the first driving motor 11
Axis pierces into inside grinding case 2, and the output shaft lower end of the first driving motor 11 is fixedly connected with main shaft 12 by shaft coupling；The cunning
Frame（5）It is equipped with sliding slot（13）, sliding slot（13）Internal slide is equipped with sliding block（14）, sliding block（14）Downside be fixedly connected with it is flat
Move block（15）, translational block（15）It is internally provided with circular trough, main shaft（11）Lower end pierce into translational block（15）In internal circular trough
And translational block（15）Lower end interference fit eccentric wheel is installed（16）, translational block（15）Downside connecting rod is hingedly installed
（17）, the grinding case（2）Left and right sides inner wall on be also tiltedly installed with the second card slot（19）With the first card slot（18）, first
Card slot（18）With the second card slot（19）Between be slidably fitted with sieve（20）, the pedestal（1）Inside center is hollow-core construction, bottom
Seat（1）Inner hub location, which is fixed by the bracket, is equipped with the second driving motor（21）, the second driving motor（21）Both ends it is defeated
Lead screw is installed with by shaft coupling on shaft（22）, lead screw（22）The other end pedestal is rotatably installed in by bearing（1）
Inner wall on, be located at both sides lead screw（22）Upper equal screw thread is equipped with thread slider（23）, thread slider（23）Upside pass through
It is welded and fixed and supporting rod is installed（24）, supporting rod（24）Straight up and pierce into grinding case（2）Inside, the pedestal（1）'s
Upper surface is provided with limit sliding chutes, supporting rod（24）Positioned at pedestal（1）Limit sliding chutes inside, supporting rod（24）Upper end fix peace
Equipped with picking-up container（25）, the picking-up container of the left and right sides（25）It is close to adjacent, the grinding case in side（2）The left and right sides be provided with
Chamber door（26）.
2. a kind of roll-type natural graphite fine gtinding screening plant according to claim 1, it is characterised in that：The left stone
Black material inlet（3）With right graphite raw material import（4）On insertion conveying pipeline is installed, screw thread is equipped with sealing on conveying pipeline
Lid.
3. a kind of roll-type natural graphite fine gtinding screening plant according to claim 1, it is characterised in that：The grinding
Slot（8）For circular trough and grinding groove（8）Equipped with two groups.
4. a kind of roll-type natural graphite fine gtinding screening plant according to claim 1, it is characterised in that：The grinding
Roller（10）Outer circle on be rotatablely equipped with ball.
5. a kind of roll-type natural graphite fine gtinding screening plant according to claim 1, it is characterised in that：Described first
Card slot（18）With the second card slot（19）Angle of inclination be 55-60 °.
6. a kind of roll-type natural graphite fine gtinding screening plant according to claim 1, it is characterised in that：The sieve
（20）Upper and lower ends be respectively connected with resetting spring, sieve（20）Upper surface is provided with round sieve and sieve（20）It is sieved for 300 mesh
Net.
7. a kind of roll-type natural graphite fine gtinding screening plant according to claim 1, it is characterised in that：Described second
Driving motor（21）For servo motor and the second driving motor（21）For monopole asynchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440302.9A CN108654743A (en) | 2018-05-10 | 2018-05-10 | A kind of roll-type natural graphite fine gtinding screening plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810440302.9A CN108654743A (en) | 2018-05-10 | 2018-05-10 | A kind of roll-type natural graphite fine gtinding screening plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108654743A true CN108654743A (en) | 2018-10-16 |
Family
ID=63778191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810440302.9A Pending CN108654743A (en) | 2018-05-10 | 2018-05-10 | A kind of roll-type natural graphite fine gtinding screening plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108654743A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759323A (en) * | 2019-01-10 | 2019-05-17 | 天长市恒鑫机电设备有限公司 | A kind of wire-drawing die generation diamond mesh optional equipment |
| CN112024088A (en) * | 2020-08-21 | 2020-12-04 | 贵州元亨利农业科技开发有限公司 | A quintessence extraction element for preparation of tuber of hyacinth bletilla facial mask |
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| US5064126A (en) * | 1987-05-06 | 1991-11-12 | Formark Pty. Limited | Shredder |
| CN206474273U (en) * | 2016-12-21 | 2017-09-08 | 深圳光天建材有限公司 | A kind of pulverizer |
| CN107537621A (en) * | 2017-09-28 | 2018-01-05 | 罗娟 | A kind of compound fertilizer produces crushing and screening device |
| CN107570268A (en) * | 2017-09-11 | 2018-01-12 | 广州林腾生物科技有限公司 | A kind of exhaust-gas treatment grinds screening plant with activated carbon |
| CN107824258A (en) * | 2017-10-25 | 2018-03-23 | 季元吉 | A kind of blue and white porcelain is fired and uses kaolin fine gtinding screening plant |
| CN107930754A (en) * | 2017-12-25 | 2018-04-20 | 郑州默尔电子信息技术有限公司 | A kind of spare superfine carbon black grinding screening plant of Anti-blockage type rubber system |
| CN207254408U (en) * | 2017-08-30 | 2018-04-20 | 张锐 | One kind is used for capsule powder and prepares medicine powder lapping device |
| CN207308296U (en) * | 2017-07-22 | 2018-05-04 | 德清丰瑞建筑工程有限公司 | A kind of building machinery sand sieving machine |
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2018
- 2018-05-10 CN CN201810440302.9A patent/CN108654743A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5064126A (en) * | 1987-05-06 | 1991-11-12 | Formark Pty. Limited | Shredder |
| CN206474273U (en) * | 2016-12-21 | 2017-09-08 | 深圳光天建材有限公司 | A kind of pulverizer |
| CN207308296U (en) * | 2017-07-22 | 2018-05-04 | 德清丰瑞建筑工程有限公司 | A kind of building machinery sand sieving machine |
| CN207254408U (en) * | 2017-08-30 | 2018-04-20 | 张锐 | One kind is used for capsule powder and prepares medicine powder lapping device |
| CN107570268A (en) * | 2017-09-11 | 2018-01-12 | 广州林腾生物科技有限公司 | A kind of exhaust-gas treatment grinds screening plant with activated carbon |
| CN107537621A (en) * | 2017-09-28 | 2018-01-05 | 罗娟 | A kind of compound fertilizer produces crushing and screening device |
| CN107824258A (en) * | 2017-10-25 | 2018-03-23 | 季元吉 | A kind of blue and white porcelain is fired and uses kaolin fine gtinding screening plant |
| CN107930754A (en) * | 2017-12-25 | 2018-04-20 | 郑州默尔电子信息技术有限公司 | A kind of spare superfine carbon black grinding screening plant of Anti-blockage type rubber system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759323A (en) * | 2019-01-10 | 2019-05-17 | 天长市恒鑫机电设备有限公司 | A kind of wire-drawing die generation diamond mesh optional equipment |
| CN109759323B (en) * | 2019-01-10 | 2020-12-08 | 天长市恒鑫机电设备有限公司 | Diamond screening equipment is used in wire drawing mould production |
| CN112024088A (en) * | 2020-08-21 | 2020-12-04 | 贵州元亨利农业科技开发有限公司 | A quintessence extraction element for preparation of tuber of hyacinth bletilla facial mask |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20181016 |