CN201785499U - Sewage zero-discharge surface cleaning device for metal strips - Google Patents
Sewage zero-discharge surface cleaning device for metal strips Download PDFInfo
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- CN201785499U CN201785499U CN2010202717389U CN201020271738U CN201785499U CN 201785499 U CN201785499 U CN 201785499U CN 2010202717389 U CN2010202717389 U CN 2010202717389U CN 201020271738 U CN201020271738 U CN 201020271738U CN 201785499 U CN201785499 U CN 201785499U
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Abstract
The utility model discloses a sewage zero-discharge surface cleaning device for metal strips, which comprises a scrubbing unit, an electrolytic cleaning unit, a spray washing unit and a water circulation system, wherein the scrubbing unit comprises a scrubbing mechanism, a scrubbing water supply tank and a scrubbing water receiving tank; the electrolytic cleaning unit comprises an electrolysis mechanism, an electrolytic water supply tank and an electrolytic water receiving tank; the spray washing unit comprises a spray-washing water supply tank and a spray-washing water receiving tank; the metal strips get through the scrubbing unit, the electrolytic cleaning unit and the spray washing unit respectively in sequence; and the water circulation system comprises a clean water supply part and a water treatment section, the clean water supply part is used for providing clean water for the spray-washing water supply tank, the scrubbing water supply tank is used for receiving the liquid supplemented with alkaline matter in the spray-washing water receiving tank, the water treatment section is used for recovering the liquid in the scrubbing water receiving tank and processing the recovered liquid for separating the precipitate and the treated liquid, the electrolytic water supply tank is used for receiving the liquid treated through the water treatment section, and the water treatment section is used for recovering the liquid in the electrolytic water receiving tank.
Description
Technical field
The utility model relates to a kind of sheet metal strip surface washing unit, especially relates to a kind of sheet metal strip surface washing unit that can realize sewage zero-discharge.
Background technology
Chinese patent database discloses the utility application that a utility model name is called " working method of continuous hot-dipping galvanizing steel strip and the used device of this method " on May 13rd, 2009, and its publication number is CN101429638A.It comprises that alkali lye spray step, alkali lye scrubs step, electrolytic degreasing step, clear water and scrub step, ground and cleaned step, clear water rinse step and zinc-plated step.Wherein, cleaning step comprises: alkali lye spray step, alkali lye are scrubbed step, electrolytic degreasing step, clear water and are scrubbed step, ground and cleaned step and clear water rinse step.Adopt this method to clean and have following deficiency: 1, procedure of processing is many, and it is big to take up room; 2, water consumption is big, cleans the cost height; 3, the liquid after the cleaning can't reclaim or can only reclaim on a small quantity, directly discharges then contaminate environment, and handling to reclaim then needs to spend a large amount of processing costss.
The utility model content
The utility model provides sewage zero-discharge sheet metal strip surface washing unit, and it has overcome the existing deficiency of sheet metal strip surface purging method in the background technology.
The technical scheme that is adopted that the utility model solves its technical problem is:
Sewage zero-discharge sheet metal strip surface washing unit, it comprises:
At least one unit of scrubbing, it comprises a scrub body that is used to scrub sheet metal strip surface, for scrubbing the water-accepting tank of scrubbing that feed cistern and receives liquid after scrubbing of scrubbing that liquid is provided, and scrubs feed cistern and scrub water-accepting tank to lay respectively on the scrub body down;
At least one electrolytic cleaning unit, it comprises that one is used for the electrolysis mechanism, of electrolytic metal band for electrolysis provides the electrolysis feed cistern of electrolyte and the electrolysis water-accepting tank of the electrolyte after the reception electrolysis, under electrolysis feed cistern and electrolysis water-accepting tank lay respectively on the electrolysis mechanism;
At least one hydro-peening unit, a hydro-peening water-accepting tank that provides the hydro-peening feed cistern and of liquid to receive liquid behind the hydro-peening for hydro-peening, hydro-peening feed cistern and hydro-peening water-accepting tank upper and lower settings are provided for it; And
One water circulation system, it comprises that a clear water water supply portion and is used to handle the water treatment workshop section of recovering liquid to isolate throw out and to handle back liquid, clear water water supply portion connects the hydro-peening feed cistern, the hydro-peening water-accepting tank connects scrubs feed cistern, scrub water-accepting tank and connect water treatment workshop section, water treatment workshop section connects the electrolysis feed cistern, and the electrolysis water-accepting tank connects water treatment workshop section;
Wherein: arrange in proper order according to the sheet metal strip direction of passage in described unit, electrolytic cleaning unit and the hydro-peening unit scrubbed.
Described hydro-peening water-accepting tank and scrub between the feed cistern, scrub between water-accepting tank and the water treatment workshop section, between water treatment workshop section and the electrolysis feed cistern and all be provided with water pump between electrolysis water-accepting tank and the water treatment workshop section.
Arrange in proper order with the band direction of passage in more described electrolytic cleaning unit, and the unitary electrode of more described electrolytic cleaning is staggered arrangement successively, and the electrode of the unitary electrolysis of last electrolytic cleaning mechanism is a negative electrode.
The described unit number of scrubbing is two, scrubs unit and second and scrubs the unit to be provided with and to be defined as respectively first before and after the band direction of passage for described two;
The hydro-peening water-accepting tank connects second and scrubs the unitary feed cistern of scrubbing, and second scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section;
Water treatment workshop section connects the electrolysis feed cistern, and the electrolysis water-accepting tank connects first and scrubs the unitary feed cistern of scrubbing, and first scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section.
The described unit number of scrubbing is three, scrubs unit, second and scrubs unit and the 3rd and scrub the unit to be provided with and to be defined as respectively first before and after the band direction of passage for described three;
The hydro-peening water-accepting tank connects the 3rd and scrubs the unitary feed cistern of scrubbing, and the 3rd scrubs the unitary water-accepting tank of scrubbing connects second and scrub the unitary feed cistern of scrubbing, and second scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section;
Water treatment workshop section connects the electrolysis feed cistern, and the electrolysis water-accepting tank connects first and scrubs the unitary feed cistern of scrubbing, and first scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section.
The described unit of scrubbing, it also comprises scrubs shell, scrubs the through port that shell all offers adaptive band up and down, and scrub body is located to be scrubbed within the shell;
Described electrolysis mechanism, it all offers the through port of adaptive band up and down;
Described hydro-peening unit, it also comprises the hydro-peening shell, the hydro-peening shell all offers the through port of adaptive band up and down, under hydro-peening feed cistern and hydro-peening water-accepting tank are separately positioned on the hydro-peening shell.
The technical program is compared with background technology, and it has following advantage:
1. clean according to brushing device, electrolytic clean unit and jetter, only need then in the end that clear water jetter of a procedure arrangement gets final product, the clear water consumption is few, occupies little space; The used liquid of brushing device and electrolytic clean unit is liquid behind the jetter hydro-peening or the liquid after those liquid treatment, and therefore: a. is except band evaporation and electrolytic cleaning moisture evaporated, and remaining moisture all repeats utilization, and institute's water requirement is few; B. except micro-alkaline substance was discharged with evaporation, remaining alkaline substance reused, and the material materials are economized, environmental protection; C. have the metal ion that brushes out in brushing device in the liquid, this metal ion can increase electrolyzing rate greatly in electrolyzer, can increase the electrolytic cleaning effect greatly;
2. by the unitary band band of last electrolytic cleaning anode, then can make the strip surface oligodynamical, thereby improve band degree of cleaning and activity, thereby improve the sticking power between coating in the next coating operation (for example zinc-plated or aluminium coated) and the band greatly;
3. the hydro-peening liquid of scrubbing liquid employing jetter that the 3rd brushing device uses, second brushing device uses scrubs the liquid of scrubbing that liquid adopts the 3rd brushing device, the electrolytic solution of scrubbing liquid employing electrolytic clean unit that first brushing device uses, clean-up performance with liquid is scrubbed from back to front, scrub the utilization ratio height, washing effect is good;
4. the solids after handling in the water treatment workshop section is recycled, and it is low to recycle processing cost.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the synoptic diagram of sewage zero-discharge sheet metal strip surface washing unit.
Fig. 2 is the synoptic diagram of the water circulation system of sewage zero-discharge sheet metal strip surface washing unit.
Embodiment
Please refer to Fig. 1 and Fig. 2, sewage zero-discharge sheet metal strip surface washing unit, it comprises that three are scrubbed 110,120,130, five electrolytic cleaning unit, unit 210,220,230,240,250, a hydro-peening unit 300 and a water circulation system.Described sheet metal strip is successively by scrubbing unit 110,120,130, electrolytic cleaning unit 210,220,230,240,250 and hydro-peening unit 300.
Described sheet metal strip 400 provides feeding by staggered transfer roller 500 about in the of many, and forms similar waviness feeding.Wherein: described unit 110,120,130, electrolytic cleaning unit 210,220,230,240,250 and 300 front and back, hydro-peening unit scrubbed are successively set on an adjacent side of transfer roller 500 up and down, adopt this method to arrange to reduce and take up room.
The described unit 110,120,130 of scrubbing includes and scrubs shell 610, scrub body 620, scrubs feed cistern 630 and scrubs water-accepting tank 640.Scrub the through port that shell 610 all offers adaptive band 400 up and down.Scrub body 620 is located to be scrubbed within the shell 610, and among the present embodiment, described scrub body 620 adopts to grind to be scrubbed, and for example adopts mill abrasive metal band 400 surfaces, with impurity such as scale removals.Scrub feed cistern 630 and scrub water-accepting tank 640 and lay respectively at and scrub on the shell 610 down, and over against the through port of scrubbing shell 610.Scrub feed cistern 630 and provide liquid, scrub the liquid that water-accepting tank 640 receives after scrubbing for scrubbing.Among the present embodiment, described 110,120,130 front and back, unit of scrubbing arrange, and are defined as first respectively and scrub unit 110, second and scrub unit the 120, the 3rd and scrub unit 130.
Described five electrolytic cleaning unit 210,220,230,240,250 include electrolysis mechanism 720, electrolysis feed cistern 730 and electrolysis water-accepting tank 740.Electrolysis mechanism 720 all offers the through port of adaptive band 400 up and down, and electrolysis mechanism 720 is used for electrolytic metal band 400, makes sheet metal strip 400 successively by the anode and cathode electrolytic cleaning, removes impurity such as lipid material.Electrolysis feed cistern 730 and electrolysis water-accepting tank 740 are separately positioned on the electrolysis mechanism 720 down and respectively over against the through port of electrolysis mechanism 720.Electrolysis feed cistern 730 is for electrolysis provides electrolyte, and electrolysis water-accepting tank 740 receives the electrolyte after the electrolysis.Among the present embodiment, 210,220,230,240,250 front and back, electrolytic cleaning unit are arranged, and are defined as the first electrolytic cleaning unit 210, the second electrolytic cleaning unit 220, the 3rd electrolytic cleaning unit 230, the 4th electrolytic cleaning unit 240, the 5th electrolytic cleaning unit 250 respectively.Among the present embodiment, can adopt following set-up mode: the electrode staggered arrangement of described five electrolytic cleaning unit 210,220,230,240,250, be respectively negative electrode, anode, negative electrode, anode, negative electrode, thereby make the electrode of band 400 of process be respectively anode, negative electrode, anode, negative electrode, anode, with the band band anode that guarantees to go out from a last electrolytic cleaning unit, so that strip surface can oligodynamical, thereby improve band degree of cleaning and activity.
Described hydro-peening unit 300, it comprises a hydro-peening shell 810, a hydro-peening mechanism, a hydro-peening feed cistern 830 and a hydro-peening water-accepting tank 840.Hydro-peening shell 810 all offers the through port of adaptive band 400 up and down.Under hydro-peening feed cistern 830 and hydro-peening water-accepting tank 840 are separately positioned on the hydro-peening shell 810 and over against through port.Hydro-peening mechanism is used for the hydro-peening sheet metal strip surface, and the hydro-peening feed cistern provides liquid for hydro-peening, liquid behind the hydro-peening water-accepting tank reception hydro-peening, and liquid has certain alkalescence behind the described hydro-peening.Among the present embodiment, described hydro-peening mechanism can be used for making the clear water supercharging can be arranged on the exit of hydro-peening feed cistern 830.
Described water circulation system, it comprises a clear water water supply portion 910 and a water treatment workshop section 920.Clear water water supply portion 920 is used to hydro-peening feed cistern 830 that clear water is provided, the 3rd scrubs the liquid that feed cistern 630 receives hydro-peening water-accepting tank 840 of scrubbing of unit 130, and in receiving course, replenish alkaline matter, second scrubs the liquid of scrubbing water-accepting tank 640 that unit 130 is scrubbed in feed cistern 630 receptions the 3rd of scrubbing of unit 120.Liquid after the processing of electrolysis feed cistern 730 reception water treatment workshop sections 920, first scrubs the liquid that feed cistern 630 receives electrolysis water-accepting tanks 740 of scrubbing of unit 110.Water treatment workshop section 920 reclaims the liquid of scrubbing water-accepting tank 640 that first liquids recovery of scrubbing water-accepting tank 640 second of scrubbing unit 110 is scrubbed unit 120, and handle, handling the back obtains to isolate throw out, filters out solids and handles back liquid, liquid after the described processing has alkalescence, have the metal ion under the brush in scrubbing step, describedly isolates throw out and filters out solids and can directly recycle.Among the present embodiment, described alkaline matter can be NaOH or NaCO
3Deng alkaline matter, but also can not be suitable for as other alkaline matter of limit, described magnitude of recruitment makes that preferably entering the 3rd alkaline liquid mass concentration of scrubbing feed cistern 630 of scrubbing unit 130 probably is that 1-10% is (as NaOH10% or NaCO
310%, or NaOH5% and NaCO
35%).Among the present embodiment, described liquid is carried and can be adopted water pump to carry.
Adopt the present embodiment washing unit, then clean 250 tons of bands (about 80000 square metres), only need 1-2 ton water, and, sewage zero-discharge.The water that adds is used for the hydro-peening step, and the amount of the water that volatilization is lost in the amount of the water of adding and the cleaning process is identical, then can realize sewage zero-discharge.Wherein, the 1-2% that volatilizees approximately in the electrolyzer, solids is with 1% approximately, and strip surface is with 5-6% approximately, always loses the about 7-10% of moisture (that is to say the amount of additional moisture).
Described purging method, it comprises:
Step 11 is used for first and scrubs sheet metal strip, wherein, scrubs liquid by first feed cistern of scrubbing of scrubbing unit 110 for scrubbing to provide, and scrubs the unitary water-accepting tank of scrubbing by first and receives the liquid of scrubbing after scrubbing;
Step 12 is used for second and scrubs sheet metal strip, wherein, scrubs liquid by second feed cistern of scrubbing of scrubbing unit 120 for scrubbing to provide, and scrubs the unitary water-accepting tank of scrubbing by second and receives the liquid of scrubbing after scrubbing;
Step 13 is used for the three-brush genus band of abacusing, and wherein, scrubs liquid by the 3rd feed cistern of scrubbing of scrubbing unit 130 for scrubbing to provide, and scrubs the unitary water-accepting tank of scrubbing by the 3rd and receives the liquid of scrubbing after scrubbing;
Step 2 is used for the electrolytic cleaning sheet metal strip, makes sheet metal strip successively by the anode and cathode electrolytic cleaning, wherein, provides electrolyte by the unitary electrolysis feed cistern of electrolytic cleaning for electrolysis, by the electrolyte after the unitary electrolysis water-accepting tank reception of the electrolytic cleaning electrolysis;
Step 3 is used for the hydro-peening sheet metal strip, provides clear water by the unitary hydro-peening feed cistern of hydro-peening for hydro-peening, by the liquid behind the unitary hydro-peening water-accepting tank reception of the hydro-peening hydro-peening.
Described water cycle method, it comprises:
Steps A is used to the unitary hydro-peening feed cistern of hydro-peening that clear water is provided;
Step B is used for that the liquid of the unitary hydro-peening water-accepting tank of hydro-peening is delivered to the 3rd and scrubs the unitary feed cistern of scrubbing, and delivers to and replenishes alkaline matter in the process, and described replenishing can evenly be replenished;
Step C1 is used for scrubbing the unitary liquid of scrubbing water-accepting tank with the 3rd and delivers to second and scrub the unitary feed cistern of scrubbing;
Step C2 is used for scrubbing the unitary liquids recovery of water-accepting tank of scrubbing to water treatment workshop section with second;
Step D is used to handle recovering liquid to be separated into throw out and to handle back liquid;
Step e is used for processing back liquid is delivered to the unitary electrolysis feed cistern of electrolytic cleaning;
Step F 1 is used for that the liquid of the unitary electrolysis water-accepting tank of electrolytic cleaning is delivered to first and scrubs the unitary feed cistern of scrubbing;
Step F 2 is used for scrubbing the unitary liquids recovery of water-accepting tank of scrubbing to water treatment workshop section with first.
Described step D comprises:
Step D1 is used for filtered and recycled liquid, with separating solid substances and liquid;
Step D2 is used for adding flocculation agent at liquid, with precipitation greasy dirt solids;
Step D3 is used for solid-liquid separation.
Enter the band band anode of step 3 from step 2.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented according to this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model contains.
Claims (6)
1. sewage zero-discharge sheet metal strip surface washing unit, it is characterized in that: it comprises:
At least one unit of scrubbing, it comprises a scrub body that is used to scrub sheet metal strip surface, for scrubbing the water-accepting tank of scrubbing that feed cistern and receives liquid after scrubbing of scrubbing that liquid is provided, and scrubs feed cistern and scrub water-accepting tank to lay respectively on the scrub body down;
At least one electrolytic cleaning unit, it comprises that one is used for the electrolysis mechanism, of electrolytic metal band for electrolysis provides the electrolysis feed cistern of electrolyte and the electrolysis water-accepting tank of the electrolyte after the reception electrolysis, under electrolysis feed cistern and electrolysis water-accepting tank lay respectively on the electrolysis mechanism;
At least one hydro-peening unit, a hydro-peening water-accepting tank that provides the hydro-peening feed cistern and of liquid to receive liquid behind the hydro-peening for hydro-peening, hydro-peening feed cistern and hydro-peening water-accepting tank upper and lower settings are provided for it; And
One water circulation system, it comprises that a clear water water supply portion and is used to handle the water treatment workshop section of recovering liquid to isolate throw out and to handle back liquid, clear water water supply portion connects the hydro-peening feed cistern, the hydro-peening water-accepting tank connects scrubs feed cistern, scrub water-accepting tank and connect water treatment workshop section, water treatment workshop section connects the electrolysis feed cistern, and the electrolysis water-accepting tank connects water treatment workshop section;
Wherein: arrange in proper order according to the sheet metal strip direction of passage in described unit, electrolytic cleaning unit and the hydro-peening unit scrubbed.
2. sewage zero-discharge sheet metal strip surface washing unit according to claim 1 is characterized in that: described hydro-peening water-accepting tank and scrub between the feed cistern, scrub between water-accepting tank and the water treatment workshop section, between water treatment workshop section and the electrolysis feed cistern and all be provided with water pump between electrolysis water-accepting tank and the water treatment workshop section.
3. sewage zero-discharge sheet metal strip surface washing unit according to claim 1, it is characterized in that: arrange in proper order with the band direction of passage in more described electrolytic cleaning unit, and, the unitary electrode of more described electrolytic cleaning is staggered arrangement successively, and the electrode of the unitary electrolysis of last electrolytic cleaning mechanism is a negative electrode.
4. according to claim 1 or 2 or 3 described sewage zero-discharge sheet metal strip surface washing units, it is characterized in that:
The described unit number of scrubbing is two, scrubs unit and second and scrubs the unit to be provided with and to be defined as respectively first before and after the band direction of passage for described two;
The hydro-peening water-accepting tank connects second and scrubs the unitary feed cistern of scrubbing, and second scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section;
Water treatment workshop section connects the electrolysis feed cistern, and the electrolysis water-accepting tank connects first and scrubs the unitary feed cistern of scrubbing, and first scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section.
5. according to claim 1 or 2 or 3 described sewage zero-discharge sheet metal strip surface washing units, it is characterized in that:
The described unit number of scrubbing is three, scrubs unit, second and scrubs unit and the 3rd and scrub the unit to be provided with and to be defined as respectively first before and after the band direction of passage for described three;
The hydro-peening water-accepting tank connects the 3rd and scrubs the unitary feed cistern of scrubbing, and the 3rd scrubs the unitary water-accepting tank of scrubbing connects second and scrub the unitary feed cistern of scrubbing, and second scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section;
Water treatment workshop section connects the electrolysis feed cistern, and the electrolysis water-accepting tank connects first and scrubs the unitary feed cistern of scrubbing, and first scrubs the unitary water-accepting tank of scrubbing connects water treatment workshop section.
6. according to claim 1 or 2 or 3 described sewage zero-discharge sheet metal strip surface washing units, it is characterized in that:
The described unit of scrubbing, it also comprises scrubs shell, scrubs the through port that shell all offers adaptive band up and down, and scrub body is located to be scrubbed within the shell;
Described electrolysis mechanism, it all offers the through port of adaptive band up and down;
Described hydro-peening unit, it also comprises the hydro-peening shell, the hydro-peening shell all offers the through port of adaptive band up and down, under hydro-peening feed cistern and hydro-peening water-accepting tank are separately positioned on the hydro-peening shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202717389U CN201785499U (en) | 2010-07-27 | 2010-07-27 | Sewage zero-discharge surface cleaning device for metal strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202717389U CN201785499U (en) | 2010-07-27 | 2010-07-27 | Sewage zero-discharge surface cleaning device for metal strips |
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| Publication Number | Publication Date |
|---|---|
| CN201785499U true CN201785499U (en) | 2011-04-06 |
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ID=43817473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202717389U Expired - Lifetime CN201785499U (en) | 2010-07-27 | 2010-07-27 | Sewage zero-discharge surface cleaning device for metal strips |
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| CN (1) | CN201785499U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011131A (en) * | 2010-07-27 | 2011-04-13 | 方明钢业(漳州)有限公司 | Sewage zero-emission metal strip surface cleaning device and method |
| CN102716921A (en) * | 2012-06-20 | 2012-10-10 | 首钢总公司 | Use method of cleaning section alkali liquor on continuous annealing production line |
-
2010
- 2010-07-27 CN CN2010202717389U patent/CN201785499U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011131A (en) * | 2010-07-27 | 2011-04-13 | 方明钢业(漳州)有限公司 | Sewage zero-emission metal strip surface cleaning device and method |
| CN102716921A (en) * | 2012-06-20 | 2012-10-10 | 首钢总公司 | Use method of cleaning section alkali liquor on continuous annealing production line |
| CN102716921B (en) * | 2012-06-20 | 2015-02-25 | 首钢总公司 | Use method of cleaning section alkali liquor on continuous annealing production line |
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Owner name: FUJIAN FANGMING ENVIRONMENTAL PROTECTION TECHNOLOG Free format text: FORMER OWNER: FANGMING STEEL (ZHANGZHOU) CO., LTD. Effective date: 20110826 |
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Free format text: CORRECT: ADDRESS; FROM: 363000 ZHANGZHOU, FUJIAN PROVINCE TO: 361000 XIAMEN, FUJIAN PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110826 Address after: 361000 Xiamen City Tower Po Siming District Road No. 168 11 floor Patentee after: Fujian Fangming Environmental Protection Technology Co.,Ltd. Address before: 363000 Zhangzhou Development Zone, China Merchants Bureau, Fujian, Zhangzhou Patentee before: Fangming Steel Industry (Zhangzhou) Co., Ltd. |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20110406 Effective date of abandoning: 20120523 |