CN106731041B - Solid-liquid separating equipment equipped with flocculant adding apparatus - Google Patents
Solid-liquid separating equipment equipped with flocculant adding apparatus Download PDFInfo
- Publication number
- CN106731041B CN106731041B CN201710181806.9A CN201710181806A CN106731041B CN 106731041 B CN106731041 B CN 106731041B CN 201710181806 A CN201710181806 A CN 201710181806A CN 106731041 B CN106731041 B CN 106731041B
- Authority
- CN
- China
- Prior art keywords
- ore pulp
- flocculant
- plate
- inner cylinder
- inclined 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.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 15
- 230000003447 ipsilateral effect Effects 0.000 claims abstract description 3
- 239000012530 fluid Substances 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 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
- 239000013055 pulp slurry Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2221/00—Applications of separation devices
- B01D2221/04—Separation devices for treating liquids from earth drilling, mining
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses the solid-liquid separating equipments for being equipped with flocculant adding apparatus, including body, internal body is equipped with heavy mud plate, console is installed above body, feeding cylinder is connected with below console, the discharge end of feeding cylinder is passed down through heavy mud plate and is located at internal body, feeding cylinder includes inner cylinder, the sleeve being socketed in outside inner cylinder, channel is provided between inner cylinder and sleeve, inner cylinder is communicated with inlet pipe, channel is communicated with inlet tube, separating plate is provided with below the feeding cylinder, the separating plate includes the inclined plate A for offering through-hole, inclined plate B, one end of inclined plate A connect the wedge angle to be formed and be raised upward with one end of inclined plate B, wedge angle is located at immediately below feeding cylinder, the other end of inclined plate A, the other end of inclined plate B is connected on ipsilateral organism sidewall.By the dispersion degree of increase ore pulp and flocculant, so that flocculant from the inside to the outside coats ore pulp completely, ore pulp is sufficiently mixed the present invention with flocculant, accelerates the rate of settling of ore pulp.
Description
Technical field
The present invention relates to a kind of concentrators, and in particular to the solid-liquid separating equipment equipped with flocculant adding apparatus.
Background technique
Concentrator is the solid-liquid separating equipment based on gravitational settling effect, is usually welded by concrete, timber or metal
Plate builds up cylindrical shallow groove with a cone bottom as structural material.The ore pulp for being 10%~20% containing solid weight can be passed through gravitational settling
Concentration is underflow ore pulp that solid content is 45%~55%, by being installed on microrunning in concentrator (1/3~1/5r/min)
Rake effect, make thickening underflow ore pulp drawn off by the underflow opening of dense motor spindle.
Concentrator accelerates the rate of settling of ore pulp by the way that flocculant is added in ore pulp, still, at present under normal circumstances
Flocculant is mixed with ore pulp in advance, mixed ore pulp is passed through to concentrator, flocculant is pre-added in ore pulp, not
Into before concentrator, ore pulp may shift to an earlier date flocculating setting, and ore pulp can be adhered on concentrator inner wall, reduce the yield of ore pulp,
And flocculant is placed for a long time to go bad, and therefore, part factory or laboratory, which can also add while ore pulp, is added flocculant,
Flocculating effect is good, still, it may appear that the case where flocculant and ore pulp cannot be thoroughly mixed, thus the opposite sedimentation for slowing down ore pulp
Speed.
Summary of the invention
After concentrator is added simultaneously the technical problem to be solved by the present invention is to flocculant and ore pulp, ore pulp and flocculant are not
It can be sufficiently mixed, and it is an object of the present invention to provide being equipped with the solid-liquid separating equipment of flocculant adding apparatus, solving ore pulp cannot with flocculant
The problem of being sufficiently mixed.
The present invention is achieved through the following technical solutions:
Solid-liquid separating equipment equipped with flocculant adding apparatus, including body, internal body are equipped with heavy mud plate, on body
Side is equipped with console, is connected with feeding cylinder below console, the discharge end of feeding cylinder is passed down through heavy mud plate and is located in body
Portion, feeding cylinder includes inner cylinder, the sleeve that is socketed in outside inner cylinder, is provided with channel between inner cylinder and sleeve, inner cylinder be communicated with into
Slurry pipe, channel are communicated with inlet tube, separating plate are provided with below the feeding cylinder, and the separating plate includes offering through-hole
Inclined plate A, inclined plate B, one end of inclined plate A connect the wedge angle to be formed and be raised upward with one end of inclined plate B, under wedge angle is located at feeding cylinder just
Side, the other end of inclined plate A, the other end of inclined plate B are connected on ipsilateral organism sidewall.
Body is the main place of solid-liquid separation on ore pulp in the present invention, and console is for controlling electronics involved in concentrator
The working condition of structure, and supporting role is played to feeding cylinder, the inner cylinder of feeding cylinder is used to be passed through ore pulp to internal body, wad a quilt with cotton
Solidifying channel of the agent between sleeve and inner cylinder is flowed into internal body, separating plate is for completely dispersing ore pulp and slow setting collection
It opens, increases the contact area of flocculant and ore pulp, so that ore pulp is uniformly mixed as far as possible with slow setting collection；Realization of the invention
Principle are as follows: be passed through flocculant and ore pulp in feeding cylinder simultaneously, flocculant flows into body from channel, and ore pulp flows into machine from inner cylinder
Body, for flocculant since its viscosity is less than ore pulp, the flow velocity of flocculant is greater than the flow velocity of ore pulp, and flocculant arrives first point than ore pulp
From plate, separating plate spreads out flocculant, can be dispersed in the internal body below demarcation plate by the flocculant of separating plate,
After ore pulp passes through demarcation plate, ore pulp can be coated on inside by flocculant, after flocculant, ore pulp are passed through a period of time, therefore,
A large amount of ore pulp and flocculant can continual arrival separating plate, flocculant it is dispersed better than ore pulp, a large amount of flocculants can divide
It is dispersed in inside ore pulp.The present invention enables flocculant to coat mine within outer by increasing the dispersibility of flocculant and ore pulp
Slurry, increases the contact area of ore pulp and flocculant, accelerates the rate of settling of ore pulp.
Be also connected with shaft below the console, shaft be located at inner cylinder inside and with inner cylinder concentric co-axial, under shaft
End is located at bottom in body across separating plate, and the lower end of shaft is connected with the cross buck rake vertical with shaft.Shaft rotates band
Dynamic buck rake rotation, cross buck rake can stir in cross buck rake rotation process quickly by the ore pulp kickoff mechanism body after thickening
Ore pulp is mixed, so that ore pulp is further mixed with flocculant.
Duct is offered inside the shaft, is offered in each piece of push plate of buck rake and is sprayed outward for duct internal flow
Fluid flow passages out.Duct inside shaft is used for during settling ore pulp to being passed through a small amount of flocculant inside ore pulp, into
One step increase ore pulp the rate of settling, and flocculant from shaft by buck rake spray, will not greatly degree stirring ore pulp, ore pulp
Stationary state will not be changed.
Control valve is provided on the inlet pipe, inlet tube.Control valve is used to adjust the fluid of inlet pipe and inlet tube
Flow.
The barrel of the inner cylinder is hollow out barrel.Inner cylinder is hollow out barrel, and flocculant enters logical between sleeve and inner cylinder
Behind road, partial flocculation agent can be entered in inner cylinder by hollow out wall and be mixed with ore pulp, as the flowing mixing of ore pulp is more uniform,
But can't big degree slow down the flow rate of ore pulp, will not ore pulp be settled in advance and most of ore pulp occur and be adhered to cylinder
On wall.
Compared with prior art, the present invention having the following advantages and benefits:
1, the solid-liquid separating equipment that the present invention is equipped with flocculant adding apparatus passes through the dispersion degree for increasing ore pulp and flocculant,
So that flocculant from the inside to the outside coats ore pulp completely, ore pulp is sufficiently mixed with flocculant, accelerates the rate of settling of ore pulp；
2, the solid-liquid separating equipment that the present invention is equipped with flocculant adding apparatus can be in real time to supplement flocculation inside ore pulp
Agent will not influence the standing sedimentation rate of ore pulp itself in the case where supplementing flocculant；
3, the structure of solid-liquid separating equipment of the present invention equipped with flocculant adding apparatus is simple, and it is convenient to operate, easy to repair.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is schematic structural view of the invention.
Label and corresponding parts title in attached drawing:
1- body, 2- sink mud plate, 3- console, 4- inner cylinder, 5- sleeve, the channel 6-, 7- inlet pipe, 8- inlet tube, and 9- points
From plate, 10- shaft, 11- buck rake.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
As shown in Figure 1, the present invention is equipped with the solid-liquid separating equipment of flocculant adding apparatus, including body 1, inside body 1
Heavy mud plate 2 is installed, console 3 is installed above body 1, is connected with feeding cylinder below console 3, the discharge end of feeding cylinder to
Under be located inside body 1 across heavy mud plate 2, feeding cylinder includes inner cylinder 4, the sleeve being socketed in outside inner cylinder 45, inner cylinder 4 and sleeve
Channel 6 is provided between 5, inner cylinder 4 is communicated with inlet pipe 7, and channel 6 is communicated with inlet tube 8, is provided with below the feeding cylinder
Separating plate 9, the separating plate 9 include inclined plate A, the inclined plate B for offering through-hole, and one end of inclined plate A connect shape with one end of inclined plate B
At the wedge angle to raise upward, wedge angle is located at immediately below feeding cylinder, and the other end of inclined plate A, the other end of inclined plate B are connected to together
On 1 side wall of body of side.Control valve is provided on the inlet pipe 7, inlet tube 8.The barrel of the inner cylinder 4 is hollowed-out cylinder
Wall.
Implementation of the invention are as follows: be passed through flocculant and ore pulp in feeding cylinder simultaneously, flocculant flows into machine from channel
Body, ore pulp flow into body from inner cylinder, and for flocculant since its viscosity is less than ore pulp, the flow velocity of flocculant is greater than the stream of ore pulp
Speed, flocculant arrive first separating plate than ore pulp, and separating plate spreads out flocculant, can be dispersed in by the flocculant of separating plate
Internal body below demarcation plate, after ore pulp passes through demarcation plate, ore pulp can be coated on inside by flocculant, in flocculant, mine
After slurry is passed through a period of time, therefore, a large amount of ore pulp and flocculant can continual arrival separating plate, the dispersed ratio of flocculant
Ore pulp is good, and a large amount of flocculants will disperse inside ore pulp.The present invention is by increasing the dispersibility of flocculant and ore pulp, so that flocculating
Agent can coat ore pulp within outer, increase the contact area of ore pulp and flocculant, accelerate the rate of settling of ore pulp.Control
Valve is used to adjust the fluid flow of inlet pipe and inlet tube.Inner cylinder is hollow out barrel, and flocculant enters between sleeve and inner cylinder
Behind channel, partial flocculation agent can be entered in inner cylinder by hollow out wall and be mixed with ore pulp, as the flowing mixing of ore pulp is more equal
It is even, but can't big degree slow down the flow rate of ore pulp, will not ore pulp be settled in advance and most of ore pulp adherency occur
On barrel.
Embodiment 2
Based on embodiment 1, shaft 10 is also connected with below the console 3, shaft 10 is located at 4 inside of inner cylinder and and inner cylinder
4 concentric co-axials, the lower end of shaft 10 pass through separating plate 9 and are located at bottom in body 1, and the lower end of shaft 10 is connected with hangs down with shaft 10
Straight cross buck rake 11.Duct is offered inside the shaft 10, is offered in each piece of push plate of buck rake 11 for duct
The fluid flow passages that internal flow sprays outward.
Shaft rotation drives buck rake rotation, and cross buck rake can be quickly by the ore pulp kickoff mechanism body after thickening, cross
Ore pulp is stirred in shape buck rake rotation process, so that ore pulp is further mixed with flocculant.Duct inside shaft is used in mine
To a small amount of flocculant is passed through inside ore pulp in slurry infall process, the rate of settling of ore pulp is further increased, and flocculant is from turning
Axis is sprayed by buck rake, will not big degree stirring ore pulp, the stationary state of ore pulp will not be changed.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (3)
1. being equipped with the solid-liquid separating equipment of flocculant adding apparatus, including body (1), heavy mud plate is installed inside body (1)
(2), which is characterized in that it is equipped with console (3) above body (1), is connected with feeding cylinder below console (3), feeding cylinder
Discharge end is passed down through heavy mud plate (2) and is located at body (1) inside, and feeding cylinder includes inner cylinder (4), is socketed in inner cylinder (4) outside
Sleeve (5) is provided with channel (6) between inner cylinder (4) and sleeve (5), and inner cylinder (4) is communicated with inlet pipe (7), channel (6) connection
Have inlet tube (8), be provided with below the feeding cylinder separating plate (9), the separating plate (9) includes the inclined plate for offering through-hole
A, one end of inclined plate B, inclined plate A connect the wedge angle to be formed and be raised upward with one end of inclined plate B, and wedge angle is located at immediately below feeding cylinder,
The other end of inclined plate A, the other end of inclined plate B are connected on ipsilateral body (1) side wall, below the console (3) also
Be connected with shaft (10), shaft (10) be located at inner cylinder (4) it is internal and with inner cylinder (4) concentric co-axial, the lower end of shaft (10) passes through
Separating plate (9) is located at body (1) interior bottom, and the lower end of shaft (10) is connected with the cross buck rake vertical with shaft (10)
(11), duct is offered inside the shaft (10), offered in each piece of push plate of buck rake (11) for duct internal flow
The fluid flow passages sprayed outward.
2. the solid-liquid separating equipment according to claim 1 equipped with flocculant adding apparatus, which is characterized in that described into slurry
Pipe (7), inlet tube are provided with control valve on (8).
3. the solid-liquid separating equipment according to claim 1 equipped with flocculant adding apparatus, which is characterized in that the inner cylinder
(4) barrel is hollow out barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181806.9A CN106731041B (en) | 2017-03-24 | 2017-03-24 | Solid-liquid separating equipment equipped with flocculant adding apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710181806.9A CN106731041B (en) | 2017-03-24 | 2017-03-24 | Solid-liquid separating equipment equipped with flocculant adding apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106731041A CN106731041A (en) | 2017-05-31 |
| CN106731041B true CN106731041B (en) | 2019-04-16 |
Family
ID=58967328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710181806.9A Active CN106731041B (en) | 2017-03-24 | 2017-03-24 | Solid-liquid separating equipment equipped with flocculant adding apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106731041B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107233748A (en) * | 2017-07-14 | 2017-10-10 | 重庆市开州区千山科技开发有限责任公司 | Lemon oil extraction equipment |
| CN112933676A (en) * | 2021-01-31 | 2021-06-11 | 南京可常道商贸有限公司 | Night skin softening sanitary towel concentration equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929080A (en) * | 1982-08-12 | 1984-02-16 | Kurita Water Ind Ltd | Flocculation treatment of dredged sludge water |
| CN201500474U (en) * | 2009-03-11 | 2010-06-09 | 南宁苏格尔科技有限公司 | Sugar juice single-layer settler |
| CN203842355U (en) * | 2013-10-18 | 2014-09-24 | 飞翼股份有限公司 | Feeding cylinder of thickener |
| CN104524824A (en) * | 2015-01-20 | 2015-04-22 | 北矿机电科技有限责任公司 | Feeding device of thickener |
| CN204543660U (en) * | 2015-04-16 | 2015-08-12 | 山西元森科技有限公司 | A kind of inclined-plate clarifying basin |
| CN205730476U (en) * | 2015-12-30 | 2016-11-30 | 深圳市锦润防务科技有限公司 | A kind of boats and ships sewage pre-treatment device |
| CN106345149A (en) * | 2016-11-08 | 2017-01-25 | 太原科技大学 | Concentrator flocculation reaction device |
-
2017
- 2017-03-24 CN CN201710181806.9A patent/CN106731041B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929080A (en) * | 1982-08-12 | 1984-02-16 | Kurita Water Ind Ltd | Flocculation treatment of dredged sludge water |
| CN201500474U (en) * | 2009-03-11 | 2010-06-09 | 南宁苏格尔科技有限公司 | Sugar juice single-layer settler |
| CN203842355U (en) * | 2013-10-18 | 2014-09-24 | 飞翼股份有限公司 | Feeding cylinder of thickener |
| CN104524824A (en) * | 2015-01-20 | 2015-04-22 | 北矿机电科技有限责任公司 | Feeding device of thickener |
| CN204543660U (en) * | 2015-04-16 | 2015-08-12 | 山西元森科技有限公司 | A kind of inclined-plate clarifying basin |
| CN205730476U (en) * | 2015-12-30 | 2016-11-30 | 深圳市锦润防务科技有限公司 | A kind of boats and ships sewage pre-treatment device |
| CN106345149A (en) * | 2016-11-08 | 2017-01-25 | 太原科技大学 | Concentrator flocculation reaction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106731041A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2007316098B2 (en) | Thickening apparatus and method for thickening | |
| AU2007316099B2 (en) | Thickener and method for thickening | |
| US7591946B2 (en) | Dual zone feedwell for a thickener | |
| CN106731041B (en) | Solid-liquid separating equipment equipped with flocculant adding apparatus | |
| CN104208923B (en) | A kind of feedwell device of thickener | |
| US6966985B2 (en) | Self-diluting feedwell including a vertical education mechanism | |
| US20110247987A1 (en) | Method for thickening and thickening apparatus | |
| CN101888890A (en) | Improvement in or relating to thickeners having self-diluting feedwell | |
| CN105314816B (en) | A kind of sludge continuous dehydration apparatus and method | |
| CN106345149A (en) | Concentrator flocculation reaction device | |
| CN206587440U (en) | The concentrator of ore pulp rapid subsidence | |
| CN107812609A (en) | Magnetic deslimer | |
| CN206214836U (en) | A kind of thickener flocculation reaction device | |
| CN112691792B (en) | Quality-improving dissociation device and method for coarse-grained minerals | |
| CN205182276U (en) | Novel concentrated quick -witted pan feeding device | |
| CN208378507U (en) | A kind of device for the concentration and separation of tail coal water | |
| CN107234009A (en) | A kind of axial admission type cyclone | |
| CN212327503U (en) | Feeding box for thickener | |
| CN214551423U (en) | Thickener multi-stage dilution flocculation reaction feeding device | |
| CN210021264U (en) | High-efficiency settling tank | |
| CN111603811B (en) | Feeding box for thickener and using method thereof | |
| CN217287256U (en) | Feeding mechanism and enrichment facility thereof | |
| CN211111669U (en) | Concentration tank in gravel production line | |
| CN201711003U (en) | Tiny material flocculating and settling device | |
| CN109775827A (en) | A kind of use in waste water treatment efficiently clarifies concentrator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190628 Address after: 610000 No. 10, 2 2, 88 Jiao Zi Road, Chengdu high tech Zone, Sichuan. Patentee after: Sichuan Xingzhi Zhihui Intellectual Property Operation Co.,Ltd. Address before: 610000 Sanjiang Avenue, Jingkai District, Mianyang City, Sichuan Province, 39 Patentee before: MIANYANG YAOBANG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240226 Address after: 610000 Rong Ou, 144 Qingbaijiang Road, Chengdu, Sichuan. Patentee after: Chengdu Zhirong Zhichuang Intellectual Property Operation Co.,Ltd. Country or region after: China Address before: 610000 No. 10, 2 2, 88 Jiao Zi Road, Chengdu high tech Zone, Sichuan. Patentee before: Sichuan Xingzhi Zhihui Intellectual Property Operation Co.,Ltd. Country or region before: China |