CN107497550A - The feed system of ceramic ball mill - Google Patents
The feed system of ceramic ball mill Download PDFInfo
- Publication number
- CN107497550A CN107497550A CN201710651447.9A CN201710651447A CN107497550A CN 107497550 A CN107497550 A CN 107497550A CN 201710651447 A CN201710651447 A CN 201710651447A CN 107497550 A CN107497550 A CN 107497550A
- Authority
- CN
- China
- Prior art keywords
- valve element
- hole
- outer end
- feed pipe
- charging hole
- 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
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 79
- 239000000463 material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012913 prioritisation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/18—Details
- B02C17/183—Feeding or discharging devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
Abstract
The feed system of this ceramic ball mill includes the charging hole for being arranged on balling drum one end,Valve element fixed mount is provided with charging hole and at least one first through hole connected with charging hole is provided with valve element fixed mount,It is equipped with valve element fixed mount in charging hole and is capable of the valve element of relative charging hole axial movement,Being provided between valve element fixed mount can force described valve element to have to charging outer end of hole movement tendency so that the elastic mechanism being tightly connected between the inner of valve element and the inner of charging hole,The system also including the feed pipe on the outside of the outer end of charging hole and described feed pipe and can drive feed pipe to be connected with feeding the first drive mechanism that outer end of hole contacts,Valve element movement can be forced so as to force the inner of valve element and charging hole are inner to cancel the second drive mechanism sealed when feed pipe contacts with charging outer end of hole by being provided with feed pipe.The advantage of the invention is that：Labor intensity can be reduced, production efficiency can be greatly improved and can avoid revealing.
Description
Technical field
The invention belongs to field of mechanical technique, more particularly to a kind of feed system of ceramic ball mill.
Background technology
Ferrite its be magnetic product raw material.
, it is necessary to be ground processing to ferrite in the production process of reality, i.e. if being set in the roller of ball mill
Dry grinding steel ball, ferrite slurry realize above-mentioned grinding as the rotation of roller with grinding steel ball so as to constantly contact.
Existing ball mill, the feeding manner of its slurry are：One charging aperture is set, it is necessary to then by outside charging aperture during material feeding
The lid at end is opened, and then feeder tubes are inserted in charging aperture, then realizes charging, charging after finishing then by the lid after opening
Son covers in charging aperture outer end again.
By above-mentioned structure, it disclosure satisfy that production and processing requires to a certain extent, still, above-mentioned scheme its extremely
Following technical problem less be present：
1st, need to be opened manually and close lid, it virtually reduces production efficiency.
2nd, roller is easily revealed during rotation between lid and charging aperture, cause raw material waste and
The pollution of operating environment.
3rd, the labor intensity of worker is higher.
The content of the invention
Regarding the issue above, the present invention provides one kind can reduce labor intensity, production can be greatly improved
Efficiency and the feed system that the ceramic ball mill of leakage can be avoided.
To reach above-mentioned purpose, present invention employs following technical proposal：The feed system of this ceramic ball mill includes setting
The charging hole in balling drum one end is put, valve element fixed mount is provided with charging hole and on valve element fixed mount provided with least one
The individual first through hole connected with charging hole, is equipped with charging hole and being capable of relative charging hole axial direction on valve element fixed mount
Mobile valve element, be provided between valve element fixed mount can force described valve element have to charging outer end of hole movement tendency so that
The elastic mechanism being tightly connected between the inner of valve element and the inner of charging hole, the system also include outside the outer end of charging hole
The feed pipe of side and described feed pipe and the first drive mechanism that feed pipe can be driven to be contacted with charging outer end of hole connect, and are entering
Valve element movement can be forced so as to force the inner of valve element and charging hole when feed pipe contacts with charging outer end of hole by being provided with expects pipe
Cancel the second drive mechanism of sealing in the inner.
The drive mechanism of valve element first and the second drive mechanism of setting, it can realize the efficiency of feed operation, significantly carry
High production efficiency.
Secondly, mechanically instead of manual type, it can not only reduce labor intensity, but also can improve
The accuracy of operation.
In addition, by the way that with reference to elastic mechanism, it can further improve sealing, the leakage of roller rotation is avoided, if
Meter is more reasonable.
In the feed system of above-mentioned ceramic ball mill, hard sealing shroud is provided with described charging hole, in feed pipe
Discharge end be provided with can with hard sealing shroud outer end formed sealing rubber sealing boot, when feed pipe is close to hard sealing shroud outer end
When the rubber sealing boot and hard sealing shroud outer end formed and seal.
Rubber sealing boot inner is the in sealing contact of face and face between hard sealing shroud.
In the feed system of above-mentioned ceramic ball mill, described rubber sealing boot internal diameter is less than the interior of hard sealing shroud
Footpath.
The structure its may insure powder feeding efficiency.
In the feed system of above-mentioned ceramic ball mill, described valve element the inner is provided with disk sealing portion, close in disk
Envelope portion is circumferentially with annular groove and the sealing ring being arranged in annular groove, and elastic mechanism forces sealing ring and hard sealing shroud
Interior end in contact realizes sealing.
In the feed system of above-mentioned ceramic ball mill, described hard sealing shroud the inner is provided with circular arc chamfering, described
Sealing ring contacted with circular arc chamfering realization sealing.
In the feed system of above-mentioned ceramic ball mill, described elastic mechanism includes being set in valve element outer end and with entering
The travelling carriage that material hole is slidably connected, the spring between valve element fixed mount and travelling carriage is provided with valve core upper sleeve.
In the feed system of above-mentioned ceramic ball mill, described travelling carriage and valve element fixed mount are arranged at intervals and slided
Frame is provided with and described one-to-one second through hole of first through hole.
In the feed system of above-mentioned ceramic ball mill, the second described drive mechanism includes axial line and valve element axle center
The cantilevered drive rod that line overlaps, feed pipe outer end have closure, and the outer end of cantilevered drive rod is connected in closure, separately
One end is hanging, the length for being longer than feed pipe of cantilevered drive rod.
In the feed system of above-mentioned ceramic ball mill, described feed pipe is circumferentially with side and enters material for making clothes pipe.
In the feed system of above-mentioned ceramic ball mill, the first described drive mechanism includes mounting bracket, in mounting bracket
It is provided with the drive cylinder being connected with feed pipe outer end.
Compared with prior art, it is the advantages of the feed system of this ceramic ball mill：
1st, the drive mechanism of valve element first and the second drive mechanism set, it can realize the efficiency of feed operation, significantly
Improve production efficiency.
Secondly, mechanically instead of manual type, it can not only reduce labor intensity, but also can improve
The accuracy of operation.
In addition, by the way that with reference to elastic mechanism, it can further improve sealing, the leakage of roller rotation is avoided, if
Meter is more reasonable.
2nd, it is simple in construction and easily fabricated.
3rd, service life is grown.
Brief description of the drawings
Fig. 1 is structural representation provided by the invention.
Fig. 2 is mplifying structure schematic diagram at A in Fig. 1.
Fig. 3 is mplifying structure schematic diagram at B in Fig. 2.
Fig. 4 is shot phase schematic diagram provided by the invention.
In figure, balling drum 1, charging hole A11, hard sealing shroud A12, circular arc chamfering A121, fixed plate A13, fixation
Cover A14, valve element fixed mount A2, first through hole A21, valve element A3, disk sealing portion A31, stopper protrusion A311, outer chamfering A312,
Interior chamfering A313, annular groove A32, sealing ring A33, elastic mechanism A4, travelling carriage A41, spring A42, the second through hole A43, charging
Material for making clothes pipe A53, cantilevered drive rod A6, mounting bracket A7, drive cylinder are entered in pipe A5, rubber sealing boot A51, closure A52, side
A71。
Embodiment
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As Figure 1-3, the feed system of this ceramic ball mill includes the charging hole for being arranged on the one end of balling drum 1
A11, fixed plate A13 is provided with charging hole A11 outer end, the through hole connected with charging hole A11 is provided with fixed plate A13,
Be provided with fixed cover A14 in one sides of the fixed plate A13 away from charging hole A11, fixed cover A14 axial lines, charging hole A11 axial lines and
The axial line of through hole overlaps.
Valve element fixed mount A2 is provided with charging hole A11 and at least one and charging hole A11 is provided with valve element fixed mount A2
The first through hole A21 of connection, prioritization scheme, the first through hole A21 quantity of the present embodiment are distributed for 2-10 and even circumferential.
Valve element fixed mount A2 plays a part of fixed and discharge.
It is equipped with valve element fixed mount A2 in charging hole A11 and is capable of the valve of relative charging hole A11 axial movements
Core A3, i.e. valve element fixed mount A2 center is provided with valve element positioning hole, and valve element A3 is inserted in valve element positioning hole and can be with respect to valve element
Positioning hole moves axially.
Valve element fixed mount A2 structures in the form of annular discs.
Between valve element fixed mount A2 be provided with can force described valve element A3 have to charging hole A11 outer end movement tendencies from
And make the elastic mechanism A4 being tightly connected between valve element A3 the inner and charging hole A11 the inner.
Specifically, elastic mechanism A4 includes being set in valve element A3 outer ends and the travelling carriage being slidably connected with charging hole A11
A41, the spring A42 being arranged with valve element A3 between valve element fixed mount A2 and travelling carriage A41.
During charging, valve element fixed mount A2 is fixed, travelling carriage A41 then with valve element A3 synchronization actions, spring A42 now
Compressed, after charging finishes, valve core reset is forced by spring A42 elastic force, i.e. realize sealing, avoid leakage.
Secondly, travelling carriage A41 and valve element fixed mount A2 is arranged at intervals and travelling carriage A41 is provided with and described first through hole
The one-to-one second through hole A43 of A21.
Travelling carriage A41 structures in the form of annular discs.
Valve element A3 outer end is extend out on the outside of travelling carriage A41 outer surface.
The system including the feed pipe A5 on the outside of charging hole A11 outer end and described feed pipe A5 and can also drive
Feed pipe A5 is connected with the first drive mechanism of the outer end in contact of charging hole A11, and further, first drive mechanism includes installation
Frame A7, the drive cylinder A71 being connected with feed pipe A5 outer ends is provided with mounting bracket A7.
Hard sealing shroud A12 is provided with charging hole A11, being provided with feed pipe A5 discharge end can be with hard sealing shroud
A12 outer ends form the rubber sealing boot A51 of sealing, the rubber sealing boot when feed pipe A5 is close to hard sealing shroud A12 outer ends
A51 is formed with hard sealing shroud A12 outer ends and sealed.
Feed pipe A5 the inner is provided with positioning step, and rubber sealing boot A51 is set on positioning step and rubber sealing boot
A51 the inner is hanging.
Rubber sealing boot A51 internal diameters are less than hard sealing shroud A12 internal diameter.
Hard sealing shroud A12 material includes engineering plastics and metal material.
Hard sealing shroud A12 outer end is provided with ring flange, which obviates the assembling of excessive depth, and hard sealing shroud A12 is inserted
In in fixed cover A14.
Disk sealing portion A31 is provided with valve element A3 the inners, A31's is circumferentially with annular groove A32 and sets in disk sealing portion
The sealing ring A33 in annular groove A32 is put, elastic mechanism A4 forces sealing ring A33 and hard sealing shroud A12 interior end in contact real
Now seal.
The inner circular arc chamfering A121, described sealing ring A33 of being provided with of hard sealing shroud A12 contacts real with circular arc chamfering A121
Now seal.
The A31 stopper protrusion A311 being circumferentially with the inside of sealing ring A33, stopper protrusion A311 in disk sealing portion
External diameter be more than hard sealing shroud A12 internal diameter.It can avoid the excessive reset of valve element.
In disk sealing portion, A31 outer end is additionally provided with outer chamfering A312, in disk sealing portion A31 the inner be additionally provided with fall
Angle A313.
It is provided with feed pipe A5 when end in contact can force valve element A3 movements to be compeled outside feed pipe A5 and charging hole A11
Make valve element A3 the inner and inner the second drive mechanisms for cancelling sealing of charging hole A11.
Further, second drive mechanism includes the cantilevered drive rod A6 that axial line overlaps with valve element A3 axial lines,
Feed pipe A5 outer ends have closure A52, and cantilevered drive rod A6 outer end is connected on closure A52, and the other end is hanging, hang
The arm-type drive rod A6 length for being longer than feed pipe A5.
Cantilevered drive rod A6 free end can be with end in contact outside valve element A3.
Side, which is circumferentially with, in feed pipe A5 enters material for making clothes pipe A53.
As Figure 1-4
The operation principle of the present embodiment is as follows：
During charging, side enters material for making clothes pipe A53 and material is delivered in feed pipe A5, drive cylinder A71 driving feed pipes now
A5 is close to hard sealing shroud A12, and when hard sealing shroud A12 outer end, the rubber sealing boot A51 inner with feed pipe A5 is realized close
Feng Shi, then synchronously driving valve element A3 is moved inward cantilevered drive rod A6 now, i.e. forces sealing ring A33 and circular arc chamfering
A121 is separated, and also material is delivered in balling drum 1 by can.
Conversely, then valve element A3 is forced outwards to reset by spring, i.e. to force sealing ring A33 and circular arc chamfering A121 to seal
Connection.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (10)
1. a kind of feed system of ceramic ball mill, including it is arranged on the charging hole (11) of balling drum (1) one end, its feature
It is, valve element fixed mount (2) is provided with described charging hole (11) and is provided with valve element fixed mount (2) at least one with feeding
The first through hole (21) of hole (11) connection, it is equipped with charging hole (11) and can enters relatively on valve element fixed mount (2)
Expect the valve element (3) of hole (11) axial movement, being provided between valve element fixed mount (2) can force described valve element (3) to have to entering
Material hole (11) outer end movement tendency is so that the elastic machine being tightly connected between the inner of valve element (3) and the inner of charging hole (11)
Structure (4), the system including the feed pipe (5) on the outside of the outer end of charging hole (11) and described feed pipe (5) and can also drive
Dynamic feed pipe (5) is connected with first drive mechanism of charging hole (11) outer end in contact, is provided with feed pipe (5) and is worked as feed pipe
(5) valve element (3) can be forced mobile with charging hole (11) outer end in contact so as to force the inner of valve element (3) and charging hole (11) interior
Cancel the second drive mechanism of sealing in end.
2. the feed system of ceramic ball mill according to claim 1, it is characterised in that set in described charging hole (11)
There is hard sealing shroud (12), the rubber that sealing can be formed with hard sealing shroud (12) outer end is provided with the discharge end of feed pipe (5)
Sealing shroud (51), the rubber sealing boot (51) and hard sealing shroud when feed pipe (5) is close to hard sealing shroud (12) outer end
(12) outer end forms sealing.
3. the feed system of ceramic ball mill according to claim 2, it is characterised in that described rubber sealing boot (51)
Internal diameter is less than the internal diameter of hard sealing shroud (12).
4. the feed system of the ceramic ball mill according to Claims 2 or 3, it is characterised in that described valve element (3) is inner
Provided with disk sealing portion (31), being circumferentially with annular groove (32) and be arranged in annular groove (32) in disk sealing portion (31)
Sealing ring (33), elastic mechanism (4) force the interior end in contact of sealing ring (33) and hard sealing shroud (12) to be realized and sealed.
5. the feed system of ceramic ball mill according to claim 4, it is characterised in that described hard sealing shroud (12)
The inner is provided with circular arc chamfering (121), and described sealing ring (33) contacts realization sealing with circular arc chamfering (121).
6. the feed system of ceramic ball mill according to claim 1, it is characterised in that described elastic mechanism (4) bag
The travelling carriage (41) for being set in valve element (3) outer end and being slidably connected with charging hole (11) is included, is arranged with valve element (3) positioned at valve
Spring (42) between core fixed mount (2) and travelling carriage (41).
7. the feed system of ceramic ball mill according to claim 6, it is characterised in that described travelling carriage (41) and valve
Core fixed mount (2) is arranged at intervals and travelling carriage (41) is provided with and described one-to-one second through hole of first through hole (21)
(43)。
8. the feed system of ceramic ball mill according to claim 1, it is characterised in that the second described drive mechanism bag
The cantilevered drive rod (6) that axial line overlaps with valve element (3) axial line is included, feed pipe (5) outer end has closure (52), cantilever
The outer end of formula drive rod (6) is connected in closure (52), and the other end is hanging, and cantilevered drive rod (6) is longer than feed pipe (5)
Length.
9. the feed system of ceramic ball mill according to claim 8, it is characterised in that described feed pipe (5) is circumferential
Enter material for making clothes pipe (53) provided with side.
10. the feed system of ceramic ball mill according to claim 1, it is characterised in that the first described drive mechanism
Including mounting bracket (7), the drive cylinder (71) being connected with feed pipe (5) outer end is provided with mounting bracket (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651447.9A CN107497550A (en) | 2017-08-02 | 2017-08-02 | The feed system of ceramic ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710651447.9A CN107497550A (en) | 2017-08-02 | 2017-08-02 | The feed system of ceramic ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107497550A true CN107497550A (en) | 2017-12-22 |
Family
ID=60689800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710651447.9A Pending CN107497550A (en) | 2017-08-02 | 2017-08-02 | The feed system of ceramic ball mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107497550A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399060A (en) * | 2021-07-13 | 2021-09-17 | 株洲长江硬质合金设备有限公司 | Automatic control system of wet grinding machine and wet grinding method |
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| CN201279519Y (en) * | 2008-10-27 | 2009-07-29 | 温州亚光科技实业有限公司 | Feeding device of plug cleaner |
| CN201288865Y (en) * | 2008-11-07 | 2009-08-12 | 余其彪 | Air conditioner inflatable pressure maintaining plastic valve |
| CN202460761U (en) * | 2012-02-21 | 2012-10-03 | 洛阳栾川钼业集团股份有限公司 | Feeding system sealing device of ball mill |
| CN202942544U (en) * | 2012-12-02 | 2013-05-22 | 湖南爱芷生医疗科技有限公司 | One-way charging valve |
| CN203955672U (en) * | 2014-05-27 | 2014-11-26 | 楚天科技股份有限公司 | The feed system of rubber plug cleaning machine |
| CN204114120U (en) * | 2014-08-01 | 2015-01-21 | 诸暨企航机械科技有限公司 | Automatic drain valve |
-
2017
- 2017-08-02 CN CN201710651447.9A patent/CN107497550A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201279519Y (en) * | 2008-10-27 | 2009-07-29 | 温州亚光科技实业有限公司 | Feeding device of plug cleaner |
| CN201288865Y (en) * | 2008-11-07 | 2009-08-12 | 余其彪 | Air conditioner inflatable pressure maintaining plastic valve |
| CN202460761U (en) * | 2012-02-21 | 2012-10-03 | 洛阳栾川钼业集团股份有限公司 | Feeding system sealing device of ball mill |
| CN202942544U (en) * | 2012-12-02 | 2013-05-22 | 湖南爱芷生医疗科技有限公司 | One-way charging valve |
| CN203955672U (en) * | 2014-05-27 | 2014-11-26 | 楚天科技股份有限公司 | The feed system of rubber plug cleaning machine |
| CN204114120U (en) * | 2014-08-01 | 2015-01-21 | 诸暨企航机械科技有限公司 | Automatic drain valve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113399060A (en) * | 2021-07-13 | 2021-09-17 | 株洲长江硬质合金设备有限公司 | Automatic control system of wet grinding machine and wet grinding method |
| CN113399060B (en) * | 2021-07-13 | 2024-04-12 | 株洲长江硬质合金设备股份有限公司 | Automatic control system of wet grinding machine and wet grinding method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171222 |
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| RJ01 | Rejection of invention patent application after publication |