CN106423420A - Dry type multi-stage smart stirring ball mill - Google Patents
Dry type multi-stage smart stirring ball mill Download PDFInfo
- Publication number
- CN106423420A CN106423420A CN201610836501.2A CN201610836501A CN106423420A CN 106423420 A CN106423420 A CN 106423420A CN 201610836501 A CN201610836501 A CN 201610836501A CN 106423420 A CN106423420 A CN 106423420A
- Authority
- CN
- China
- Prior art keywords
- discharging
- ball mill
- air
- dry type
- sieve plate
- 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.)
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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
- 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
- B02C17/04—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 unperforated container
- B02C17/06—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 unperforated container with several compartments
-
- 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
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
-
- 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
Abstract
The invention relates to a dry type ball mill, in particular to a dry type multi-stage smart stirring ball mill which comprises a grinding barrel. One end of the grinding barrel is a feeding end, and the other end of the grinding barrel is a discharging end. A screening plate is arranged at the discharging end and provided with discharging screen holes and air inducing holes capable of inducing air into the grinding barrel from the exterior of the grinding barrel. Dry powder enters the grinding barrel to be ground from the feeding end under the action of the air, and ground powder flows out of the discharging screen holes under the combined action of the air entering the grinding barrel through the air inducing holes and the air entering the grinding barrel through the feeding end. The screening plate is arranged at the discharging end, the ground powder can pass through the discharging screen holes of the screening plate while grinding media are blocked in the grinding barrel, the grinding media are prevented from flowing out along with the ground powder, blocking of discharged materials is avoided, and discharging efficiency is improved.
Description
Technical field
The present invention relates to dry type ball milling material technology, such as discharging, classification and super-refinement deep processing of powder material etc.,
A kind of specifically dry type multistage intelligent agitating ball mill.
Background technology
At present, at home and abroad in the production process of powder product, it is interrupted production, due to technique for producing raw material, control mostly
The factors such as system processed are it tends to be difficult to ensure there is equal quality with a collection of product.The fluctuation of product leads to the finger of portioned product
Mark, beyond the quality standard of country, industry or enterprise, leads to product quality to decline.The since the advent of the world such as ball mill, pulverizer by
In excellent performance, material super-refinement and classification field win the good reputation of scientific research person, corporate boss, with new forms of energy, green wood
Material industry is a dark horse, the rapidly increasing of the demand to above-mentioned machine for the market, and the requirement of its performance and quality is also increasingly tight
There are tightened up requirement in the developed countries such as lattice, particularly America and Europe.Traditional wet stirring ball mill is widely applied to work
Industry field, the grinding for suspension and dispersion, it can pass through the direct feeding of product pump；And for existing dry method ball mill,
Or its feeding manner is fed naturally using gravity, no matter dry or wet grinding technics, by grinding, sorting, filter, dry
The operation composition such as dry, packaging, raw material, resin and solvent, surface capping agents are put into ball milling in ball mill, ball milling in proportion
Material enters accumulator and mixes afterwards, or using negative pressure charging, direct discharging after being ground by abrasive media after charging, this kind grinds
The abrasive media of grinding machine is easily flowed out in the lump with the powder after grinding, easily causes discharge blockage.
Content of the invention
For above-mentioned technical problem, it is an object of the invention to provide a kind of dry type avoiding causing discharge blockage is multistage
Intelligent agitating ball mill.
The present invention solves the technical scheme that adopted of above-mentioned technical problem：A kind of dry type multistage intelligent agitating ball mill,
Including in be provided with abrasive media sand cylinder and drive abrasive media motion rotor, this rotor by rotating shaft drive rotation, described
Sand cylinder one end is feed end, and the other end is discharge end, and described discharge end is provided with the sieve plate closing this end, and this sieve plate is arranged
Have discharging sieve aperture and be provided with can outside sand cylinder to it in introduce wind-force air inducing hole；Dry powder body is in the effect of wind-force fluid
Lower acceleration enters in sand cylinder from described feed end, then the abrasive media driving through rotor grinds, and the powder body after grinding is passing through
Described air inducing hole enter wind-force in sand cylinder and by under the collective effect of the wind-force in feed end entrance sand cylinder from described
Discharging sieve aperture flows out.
Preferably, being provided with, outside described sieve plate, the discharge barrel being tightly connected with sand cylinder, discharge barrel offers out
Material mouth, flows out from described discharging opening after the powder body that described discharging sieve aperture flows out enters discharge barrel；It is provided with and stretch outside discharge barrel
Enter the air-inducing passage in discharge barrel, the inserting end of this air-inducing passage is connected with described air inducing hole.
Preferably, being extended with, to discharge barrel side, the hollow air duct connecting with described air inducing hole in the middle part of described sieve plate, should
Air duct inner chamber is connected with the inserting end of described air-inducing passage.
Preferably, described sieve plate is circumferentially distributed on the side of discharge barrel side several water conservancy diversion being radially arranged
Plate, each described deflector one end is connected with described air duct barrel, and the sieve plate region between two often adjacent deflectors is opened
It is provided with described several discharging sieve aperture.
Preferably, described air duct is round table-like in diminish along discharging orient diameter.
Preferably, described air-inducing passage is arranged in deflector.
Preferably, described air-inducing passage is to stretch into the induced duct being connected in discharge tank with air duct.
Preferably, being provided with several cut-offs in described sand cylinder, sand cylinder is separated into several closings by several cut-offs
Interval, two adjacent intervals are by the punishment in advance sieve plate connection being arranged on cut-off.
Preferably, the punishment in advance sieve aperture passing through for powder is provided with each described punishment in advance sieve plate, each described material screen excessively
The through hole introducing wind-force outside sand cylinder into corresponding interval is offered on plate.
Preferably, described discharge end is located on one section of the described rotating shaft in sand cylinder and/or feed end is provided with point
Step cone.
As can be known from the above technical solutions, the present invention is provided with sieve plate in discharge end, and the powder after grinding can be made to pass through sieve plate
Discharging sieve aperture and abrasive media is blocked in sand cylinder, it is to avoid abrasive media flows out it is ensured that will not with the powder after grinding
Cause discharge blockage；And external wind can be introduced sand cylinder by the air inducing hole of sieve plate by the present invention, this part wind-force can also
The powder after grinding is made to pass through discharging sieve aperture, thus improving discharging efficiency, it is to avoid feed blocking discharging opening.
Brief description
Fig. 1 is a kind of structural representation of optimal way of the present invention.
Fig. 2 is the structural representation of sieve plate in the present invention.
Fig. 3 is the structural representation of present invention another kind optimal way.
Specific embodiment
The present invention is discussed in detail below in conjunction with the accompanying drawings：
As Fig. 1 and Fig. 2, as a kind of optimal way, a kind of dry type multistage intelligent agitating ball mill MORPH DHM, including in set
There are the sand cylinder 2 of abrasive media 1 and the rotor 3 driving abrasive media motion, this rotor drives rotation by rotating shaft 4, described grinding
Cylinder one end is feed end 21, and the other end is discharge end 22, preferably, being located at described in one section of the described rotating shaft in sand cylinder
Feed end or discharge end are provided with dynamic classification wheel 5, also can arrange dynamic classification wheel, the dynamic classification of feed end at two ends simultaneously
Outside abrasive media can be blocked in grading wheel by wheel, abrasive media is prevented to be gathered in grading wheel center, it is to avoid to reduce and participate in collision
Abrasive media and charging at clogging；The grading wheel of discharge end not only abrasive media can be blocked in outside grading wheel, also
Thinner material after grinding can be made to enter grading wheel center flow out, accelerate stock grading and improve efficiency, be also avoided that simultaneously and
Mitigate the abrasion to sieve plate 6 for the abrasive media；The discharge end of the present invention is provided with the sieve plate 6 closing this end, and this sieve plate is provided with
Discharging sieve aperture 61 and be provided with can outside sand cylinder to it in introduce wind-force air inducing hole 62；Dry powder body is in the fluid force of wind-force
Enter in sand cylinder from described feed end under effect, then the abrasive media driving through rotor grinds, the powder body after grinding is logical
Cross the wind-force that described air inducing hole enters in sand cylinder and by under the collective effect of the wind-force in feed end entrance sand cylinder from institute
State discharging sieve aperture to flow out；Implementation process is passed through design the size of the discharging screen-aperture of sieve plate, grinding medium can be avoided completely
Mass flow goes out.Additionally, cleaning device can be installed additional at sieve plate, can be rotatably in central authorities' motion of sieve plate or by impulse jet.
This cleaning device is provided with least one for the device spraying cleaning medium.The supply of this cleaning device is by passage Lai really
Protect, this passage extends past shaft.
The design one side in described air inducing hole can increase air quantity, accelerates discharging；Simultaneously also can be by this air quantity as cleaning
A part for device, removes abrasive material and the powder material sticking on sieve plate from sieve plate；On the other hand, air inducing hole can be by
Assemble and participate in grinding after powder in its vicinity dispels, prevent it from sticking on sieve plate, it is to avoid sieve plate blocking；As air inducing hole sets
Put in the middle part of sieve plate, effect more preferably, because the centrifugal force being gathered in the powder in the middle part of sieve plate is less, participates in the chance of collision relatively
Few, even if the powder quality of center is less, but it is larger to be inevitably present a part of quality, and this partly larger quality
Powder be difficult to regrinding of having an opportunity, therefore pass through air inducing hole and introduce reverse wind-force, participate in again after being dispelled grinding,
Thus improving the uniformity of abrasive product quality.
It is provided with, outside the sieve plate 6 of the present invention, the discharge barrel 7 being tightly connected with sand cylinder, discharge barrel offers discharging opening
71, flow out from described discharging opening after the powder body that described discharging sieve aperture flows out enters discharge barrel, can pass through to arrange out in discharging opening
Expects pipe 72 discharging；Be provided with the air-inducing passage 63 stretching in discharge barrel outside discharge barrel, the inserting end of this air-inducing passage with described
Air inducing hole connects, thus external wind can be introduced sand cylinder by air-inducing passage, it is to avoid interfere with the discharging wind-force of discharge barrel；
Preferably, being extended with the hollow air duct 64 connecting with described air inducing hole, air inducing hole pair to discharge barrel side in the middle part of described sieve plate
Should be arranged in the middle part of sieve plate, this air duct inner chamber is connected with the inserting end of described air-inducing passage, the wind-force in entrance air-inducing passage is again
Enter air duct, then sand cylinder is entered by air inducing hole, so that forming independent air intake in sand cylinder.In implementation process,
Roots blower can be set at discharge nozzle（ Roots blower）Or aerator etc., due to feed end and air inducing hole with all with outward
Boundary connects, and therefore in the presence of aerator, dry powder is entered from feed end with a part of wind-force, and another part wind-force is from air inducing
Hole enters sand cylinder, from quickening discharging.
In the present invention, described sieve plate 6 is circumferentially distributed on the side of discharge barrel side several being radially arranged
Deflector 65, each described deflector one end is connected with described air duct barrel, the sieve plate between two often adjacent deflectors
Region offers described several discharging sieve aperture, and discharging sieve aperture can be from position distribution slightly a little further in the middle part of sieve plate to sieve plate side
Edge, the powder that air inducing hole collects around so in the middle part of sieve plate can be dispelled by wind-force, then in the presence of centrifugal force and wind-force
Flow out from discharging sieve aperture.Preferably, described air duct is round table-like in diminish along discharging orient diameter, flow out from discharging sieve aperture
Powder under the guide functions of deflector to the outer wall of round platform around converge, trumpet-shaped outer wall be conducive to powder converge；In reality
Discharging opening and discharge nozzle can be arranged to horn-like during applying, the powder of convergence is again by trumpet-shaped discharging opening and discharging
Guan Shike forms vortex, does not result in blocking, is conducive to discharging further；And air duct, sieve plate, deflector can be integrally formed, plus
Work is convenient, quick for installation, saves manufacturing cost.
Described air-inducing passage is arranged in deflector and leads to that is to say, that air inducing can directly radially be opened up in deflector
Road, air-inducing passage, by the hole that is opened on air duct and air duct inner space, so will not hinder the discharging of discharge barrel；This is set
During the mode of sample, the extended discharge barrel of deflector, so that air-inducing passage is communicated with the external world；Deflector also can not stretch into discharge barrel,
Through hole is opened up on discharge barrel connect with air-inducing passage, also can on air-inducing passage grafting airduct, make airduct stretch into discharge barrel etc.；With
When, the demand according to air quantity can arrange air-inducing passage in each deflector or part deflector.In implementation process, described
Air-inducing passage can be for stretching into the induced duct being connected in discharge tank with air duct, and induced duct is separately provided, and is easily installed；The present invention can set
It is set to an induced duct, may also set up several, also deflector can be provided directly as induced duct.
As Fig. 3, as another kind of optimal way, it is provided with several cut-offs 23 in described sand cylinder, several cut-offs will grind
Cylinder is separated into the interval of several closings, and two adjacent intervals are connected by the punishment in advance sieve plate 24 being arranged on cut-off；Specifically, often
The punishment in advance sieve aperture 25 passing through for powder is provided with punishment in advance sieve plate described in, punishment in advance sieve plate also can be arranged as above-mentioned discharging sieve plate
Deflector etc..In each interval, the abrasive media of different-diameter in implementation process, can be filled by feed end to discharge end,
Because progressively classified grinding can be carried out to powder by several discharging sieve plates, improve grinding efficiency and quality.Sieve plate in order to
Increase air quantity, the through hole introducing wind-force outside from sand cylinder into corresponding interval also can be offered on each described punishment in advance sieve plate
26, the edge of the sieve plate that through hole can be arranged, and air-inducing passage of similar discharging sieve plate being in communication with the outside etc. can be set.
Above-mentioned embodiment is used for illustrative purposes only, and is not limitation of the present invention, relevant technical field
Those of ordinary skill, without departing from the spirit and scope of the present invention, acceptable various changes can be made and modification, therefore institute
There is equivalent technical scheme also should belong to scope of the invention.
Claims (10)
1. a kind of dry type multistage intelligent agitating ball mill, including in be provided with abrasive media sand cylinder and drive abrasive media motion
Rotor, this rotor by rotating shaft drive rotation, described sand cylinder one end be feed end, the other end be discharge end it is characterised in that：
Described discharge end be provided with close this end sieve plate, this sieve plate is provided with discharging sieve aperture and be provided with can outside sand cylinder to
The air inducing hole of wind-force is introduced in it；Dry powder body enters in sand cylinder from described feed end under the action of the forces of the wind, then through rotor banding
Dynamic abrasive media grinds, and the powder body after grinding is entered in the wind-force being entered by described air inducing hole in sand cylinder with by feed end
Enter and flow out from described discharging sieve aperture under the collective effect of the wind-force in sand cylinder.
2. according to claim 1 dry type multistage intelligent agitating ball mill it is characterised in that：Be provided with outside described sieve plate with
The discharge barrel that sand cylinder is tightly connected, discharge barrel offers discharging opening, and the powder body flowing out from described discharging sieve aperture enters discharging
Flow out from described discharging opening after cylinder；It is provided with the air-inducing passage stretching in discharge barrel outside discharge barrel, the stretching into of this air-inducing passage
End is connected with described air inducing hole.
3. according to claim 2 dry type multistage intelligent agitating ball mill it is characterised in that：To discharge barrel in the middle part of described sieve plate
Side is extended with the hollow air duct connecting with described air inducing hole, and this air duct inner chamber is connected with the inserting end of described air-inducing passage.
4. according to claim 3 dry type multistage intelligent agitating ball mill it is characterised in that：Described sieve plate is near discharge barrel one
Circumferentially distributed on the side of side have several deflectors being radially arranged, and each described deflector one end is with described air duct barrel even
Connect, the sieve plate region between two often adjacent deflectors offers described several discharging sieve aperture.
5. according to claim 4 dry type multistage intelligent agitating ball mill it is characterised in that：Described air duct is in along discharging direction
It is round table-like that diameter diminishes.
6. according to claim 4 dry type multistage intelligent agitating ball mill it is characterised in that：Described air-inducing passage is arranged on leads
In stream plate.
7. according to claim 4 dry type multistage intelligent agitating ball mill it is characterised in that：Described air-inducing passage is to stretch into out
The induced duct being connected with air duct in charging basket.
8. according to any one in claim 1 to 7 dry type multistage intelligent agitating ball mill it is characterised in that：Described grind
It is provided with several cut-offs, sand cylinder is separated into the interval of several closings by several cut-offs, two adjacent intervals pass through setting in mill tube
Punishment in advance sieve plate connection on cut-off.
9. according to claim 8 dry type multistage intelligent agitating ball mill it is characterised in that：Set on each described punishment in advance sieve plate
It is equipped with the punishment in advance sieve aperture passing through for powder, each described punishment in advance sieve plate offers and introduces into corresponding interval outside sand cylinder
The through hole of wind-force.
10. according to claim 1 dry type multistage intelligent agitating ball mill it is characterised in that：Turn described in sand cylinder
One section of axle is upper to be provided with grading wheel positioned at described discharge end and/or feed end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836501.2A CN106423420B (en) | 2016-09-20 | 2016-09-20 | A kind of dry type multistage intelligent agitating ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610836501.2A CN106423420B (en) | 2016-09-20 | 2016-09-20 | A kind of dry type multistage intelligent agitating ball mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106423420A true CN106423420A (en) | 2017-02-22 |
| CN106423420B CN106423420B (en) | 2019-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610836501.2A Active CN106423420B (en) | 2016-09-20 | 2016-09-20 | A kind of dry type multistage intelligent agitating ball mill |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107670784A (en) * | 2017-11-13 | 2018-02-09 | 福州大学 | The ventilation precursor reactant ball grinder and its application method of a kind of anti-air-hole blockage |
| CN107930780A (en) * | 2017-12-20 | 2018-04-20 | 龚伟 | Clean sieve and removable sand mill |
| CN108126632A (en) * | 2018-02-19 | 2018-06-08 | 宁波工程学院 | A kind of continous way synchronizes planet mechanico-chemical reaction device |
| CN108295788A (en) * | 2018-03-18 | 2018-07-20 | 宁波工程学院 | A kind of continous way synchronization planet mechanico-chemical reaction system |
| CN108480062A (en) * | 2018-06-05 | 2018-09-04 | 泉州市灿华再生资源有限公司 | A kind of centrifuge of PET recycling dehydration |
| CN112156859A (en) * | 2020-09-17 | 2021-01-01 | 陆金良 | Dry-method stirring ball mill capable of reducing paste-grinding phenomenon |
| CN113087228A (en) * | 2021-04-02 | 2021-07-09 | 周良华 | Multi-energy pollution treatment device for mine operation |
| CN113953026A (en) * | 2021-10-18 | 2022-01-21 | 天津水泥工业设计研究院有限公司 | Triaxial dry-method stirring mill |
| CN113976277A (en) * | 2021-10-18 | 2022-01-28 | 天津水泥工业设计研究院有限公司 | Cement external circulation vertical mill combined high-performance grinding process system |
| CN115780030A (en) * | 2023-01-13 | 2023-03-14 | 江苏恒远国际工程有限公司 | Cement ball mill that high efficiency was ground |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107670784A (en) * | 2017-11-13 | 2018-02-09 | 福州大学 | The ventilation precursor reactant ball grinder and its application method of a kind of anti-air-hole blockage |
| CN107930780A (en) * | 2017-12-20 | 2018-04-20 | 龚伟 | Clean sieve and removable sand mill |
| CN108126632A (en) * | 2018-02-19 | 2018-06-08 | 宁波工程学院 | A kind of continous way synchronizes planet mechanico-chemical reaction device |
| CN108295788A (en) * | 2018-03-18 | 2018-07-20 | 宁波工程学院 | A kind of continous way synchronization planet mechanico-chemical reaction system |
| CN108480062A (en) * | 2018-06-05 | 2018-09-04 | 泉州市灿华再生资源有限公司 | A kind of centrifuge of PET recycling dehydration |
| CN112156859A (en) * | 2020-09-17 | 2021-01-01 | 陆金良 | Dry-method stirring ball mill capable of reducing paste-grinding phenomenon |
| CN112156859B (en) * | 2020-09-17 | 2021-12-31 | 博士爱玩具有限公司 | Dry-method stirring ball mill capable of reducing paste-grinding phenomenon |
| CN113087228A (en) * | 2021-04-02 | 2021-07-09 | 周良华 | Multi-energy pollution treatment device for mine operation |
| CN113953026A (en) * | 2021-10-18 | 2022-01-21 | 天津水泥工业设计研究院有限公司 | Triaxial dry-method stirring mill |
| CN113976277A (en) * | 2021-10-18 | 2022-01-28 | 天津水泥工业设计研究院有限公司 | Cement external circulation vertical mill combined high-performance grinding process system |
| CN113976277B (en) * | 2021-10-18 | 2023-01-31 | 天津水泥工业设计研究院有限公司 | Cement external circulation vertical mill combined high-performance grinding process system |
| CN115780030A (en) * | 2023-01-13 | 2023-03-14 | 江苏恒远国际工程有限公司 | Cement ball mill that high efficiency was ground |
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| CN106423420B (en) | 2019-06-18 |
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Address after: 410199 No. 9, Huaxiang Road, Changsha Economic Development Zone, Changsha Area, China (Hunan) Pilot Free Trade Zone, Changsha City, Hunan Province Patentee after: Hunan Jinling Machine Tool Technology Group Co.,Ltd. Address before: 410131 No. 9, Huaxiang Road, economic and Technological Development Zone (quantang Street), Changsha City, Hunan Province Patentee before: Hunan Jinling Machine Tool Co.,Ltd. |