CN101797570A - Curtain-type soot treatment and purification system for hot galvanizing and method thereof - Google Patents
Curtain-type soot treatment and purification system for hot galvanizing and method thereof Download PDFInfo
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- CN101797570A CN101797570A CN201010122408A CN201010122408A CN101797570A CN 101797570 A CN101797570 A CN 101797570A CN 201010122408 A CN201010122408 A CN 201010122408A CN 201010122408 A CN201010122408 A CN 201010122408A CN 101797570 A CN101797570 A CN 101797570A
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Abstract
The invention relates to a curtain-type soot treatment and purification system for hot galvanizing and a method thereof. The system comprises a galvanizing soot collecting device and a galvanizing soot purification device, wherein the galvanizing soot gathering device comprises a curtain system, a supporting system, a drive system and an air draft pipeline system; the galvanizing soot purification device comprises a purification processing tower and a centrifugal fan. In the galvanizing production process, when galvanizing travelling vehicle travels above a zinc pot, a piece to be plated is dipped into zinc bath, the curtain quickly lowers to form a gas hood; the air draft pipeline system on the top automatically extracts soot and introduces the soot into the purification processing tower; after being purified and adsorbed, soot is discharged into atmosphere; after galvanization ends, the curtain quickly rises and returns, and a plating piece moves to the subsequent processing working procedure. The invention has favorable collection, purification and adsorption effect on galvanizing soot, has low energy consumption, simple structure, convenient manufacture and maintenance, small floor area and small affect on galvanizing effect, and is suitable for liner hot galvanizing production lines, and the collection efficiency is above 95%.
Description
Technical field
The present invention relates to galvanizing smoke and dust treatment technical field in the galvanizing production, particularly relate to a kind of curtain-type soot treatment and purification system for hot galvanizing and method thereof.
Background technology
Galvanizing is to improve one of weather-resistant important means in steel piece surface, and it carries out preliminary treatment with the steel piece surface earlier, immerses then in the zinc liquid of fusion, forms one deck zinc metal coating coating on the steel piece surface.One important process operation of galvanizing pre-treatment when solvent is handled, it not only can remedy the deficiency that several procedures in front may exist, and can also activate steel surface, improves quality of coating, and this is unexistent in other steel anti-corrosive technologies.The most normal employing now to help the plating solvent be zinc chloride (ZnCl
2) and ammonium chloride (NH
4Cl) mixed solution.When galvanizing by dipping, often produce bigger flue dust with between the iron and steel of zinc chloride ammonium salt film, influence the operating environment of factory.This is because the ammonium chloride (NH in the salt film
4Cl) decomposition temperature is low, far below 450 ℃ of conventional galvanizing temperature.Ammonium chloride (NH
4Cl) decomposes can form ammonia (NH
3) and hydrogen chloride (HCl), these two kinds of gases can be combined into micron order or nanoscale crystal grain again above the zinc bath.So main component is ammonium chloride (NH in the flue gas
4And be attended by ammonia (NH Cl),
3), hydrogen chloride (HCl) and zinc oxide (ZnO), flue gas is white in color; If have under the situation of aluminium in the zinc liquid, also has the aluminium chloride (AlCl of cyan
3) flue gas.These gases do not have too big harm to human body, but are in for a long time in the environment of big flue gas, will produce harmful effect to human body yet.
For the flue dust that produces in the hot galvanizing process, domestic most of enterprises do not take appropriate measures and handle.And, generally having adopted the mode of flue dust collecting filtration treatment in American-European countries, the flue dust that is produced after collecting, is handled in filter extract system again.At present, Chang Yong gathering system has three classes: (1) side exhausting system.Along zinc pot length direction a slit-shaped suction opeing is set respectively, the flue dust that galvanizing produces extracts by these two slits.Because the flue dust temperature height that galvanizing produces, the rate of climb is very fast, so will collect zinc-plated flue dust preferably bigger draft must be arranged.The advantage of side exhausting system is: workpiece is hung less demanding, easy to operate; Collection efficiency is generally about 75%; But this method institute required airflow is big, the power of motor height; The treating capacity of follow-up purification apparatus is big; Zinc pot surface radiating is faster, is subjected to the workshop Influences on Wind Velocity bigger; Steel pole, steel pipe and similar tubular workpiece because flue dust can be emerged ease to zinc pot two ends in managing, can exceed the capture range of system; Can gather dust in the gathering system pipeline, need regularly to handle; Need more pipe-line system and accessory thereof etc.(2) mobile cover gathering system.Whole collection cover body is installed on the crane, and can move with crane.Cover body divides two parts, and top is fixing to be connected with crane, and the bottom can move up and down.When workpiece was zinc-plated, the bottom cover body moved down zinc pot top is covered fully, and the flue dust of generation is collected to extract out in cover body and handles.After workpiece soaks the zinc certain hour, move on the cover body of bottom, reserve zinc pot top certain position, take off operations such as zinc gray with convenient zinc-plated workman.The advantage of mobile cover gathering system is: higher collection efficiency can reach 95%; Institute's required airflow is half of side exhausting system, and power of motor is little; The treating capacity of follow-up purification apparatus is little; The collection conduit system is simple; The danger that can avoid quick-fried zinc to bring to the operator, all on crane, the weight that crane is born needs bigger whole cover body weight, needs the higher crane of tonnage but its shortcoming is; Zinc-plated inconvenient operation, the operating time is longer; Seal between each parts needs time-based maintenance; Cover on the crane owing to will install and fix, zinc-plated region height need increase by 2～3 meters.(3) fixed cover gathering system.A big steel construction cover body is installed on the zinc pot, and workpiece will come out from the other end from entering along a section of the cover body of zinc pot length direction.Workpiece enters and carries out behind the cover body when zinc-plated, and the Men Jun of cover body both sides closes, to extract the flue dust of zinc-plated generation.The advantage of fixed cover gathering system is: surpass 95% collection efficiency; Do not need to carry out the motion of large amount of complex, only need moving of door and window; All weight is all on ground, and crane does not need to bear cover body weight; Provide excellent protection to zinc-plated workman; The treating capacity of institute's required airflow and follow-up purification apparatus is little, and pipe-line system is simple etc., but its shortcoming is to drag for the slag difficulty; Zinc-plated operation inconvenience; The workshop is unsighted etc.
The flue dust that galvanizing produces adopts the cloth-bag type filtration system again flue dust to be carried out filtration treatment after gathering system is collected usually.Bag-type dust equipment manufacturing cost height, floor space is big, and the import of bag-type dust equipment also needs heating, drying etc.
Summary of the invention
Technical problem to be solved by this invention provides a kind of curtain-type soot treatment and purification system for hot galvanizing and method thereof, can fully collect and purify the zinc-plated flue dust of absorption, greatly improve zinc-plated operating environment, discharged flue gas reaches GB16297-96 atmosphere pollution comprehensive discharge mark Huaihe River.
The technical solution adopted for the present invention to solve the technical problems is: a kind of curtain-type soot treatment and purification system for hot galvanizing is provided, comprise zinc-plated flue dust collecting device and zinc-plated smoke and dust purifier, described zinc-plated flue dust collecting device comprises curtain system, support system, transmission system and exhausting pipe-line system, described zinc-plated smoke and dust purifier comprises purified treatment tower and centrifugal blower, and zinc pot outer periphery has described curtain system; Zinc pot top is provided with described support system; Described support system is provided with described transmission system; Described transmission system is connected with described curtain system, is used for the described curtain system of lifting; Described support system upper end is provided with the exhausting pipe-line system; Described exhausting pipe-line system links to each other with described purified treatment tower bottom; Described purified treatment tower top links to each other with described centrifugal blower.
The curtain system bottom of described curtain-type soot treatment and purification system for hot galvanizing is provided with the framework of square steel tube weldering system; Described curtain system is divided into two sections at least, the section with section between be connected by the stainless steel square tube.
The curtain system of described curtain-type soot treatment and purification system for hot galvanizing adopts refractory glass fibre to weave cotton cloth and makes.
Be in during the curtain system inoperative of described curtain-type soot treatment and purification system for hot galvanizing and pack up folded state and be higher than zinc-plated driving.
The support system lower end of described curtain-type soot treatment and purification system for hot galvanizing is provided with the slippage guide rail.
The curtain system of described curtain-type soot treatment and purification system for hot galvanizing is by the computer controlled automatic location and the safe-guard system control that are installed on the described support system.
The purified treatment tower of described curtain-type soot treatment and purification system for hot galvanizing adopts at least, and the secondary spray adds at least two layers of filling-material structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of galvanizing curtain-type soot treatment and purification method also is provided, may further comprise the steps:
(1) zinc-plated driving marches to zinc pot top, when unplated piece is immersed the zinc bath, triggers the photoelectric control switch of computer controlled automatic location and safe-guard system, and the curtain that is higher than zinc-plated driving is descended rapidly, forms petticoat pipe;
(2) utilize the peripheral petticoat pipe that forms of zinc pot to reduce distributing of zinc-plated flue dust, centrifugal blower carries out exhausting automatically, with zinc-plated flue dust suction main air draft, and enters in the purified treatment tower by pipeline;
(3) after zinc-plated flue dust enters the purified treatment tower, handle ammonium chloride, ammonia, hydrogen chloride and the zinc oxide that filters in the zinc-plated flue dust through spray, and by the solid particle in the zinc-plated flue dust of filling adsorption;
(4) the zinc-plated soot emissions that will purify are in atmospheric environment, and reclaim spray cleaning water;
(5) after the zinc-plated end, make curtain rising return rapidly, the subsequent treatment operation is taken out and moved to zinc-plated driving with plating piece.
Beneficial effect
Owing to adopted above-mentioned technical scheme, the present invention compared with prior art has following advantage and good effect:
Around the zinc pot, be provided with curtain system, and on the ceiling hold of the support system above the zinc pot, be provided with the zinc-plated flue gas of exhausting pipeline systematic collection, reduced the dissipation of zinc-plated flue dust by blocking of curtain, collection efficiency is more than 95%, and is suitable with the collection efficiency of mobile cover gathering system and fixed cover gathering system; Curtain system is divided into multistage, is connected by the stainless steel square tube between section and the section, neither influences folding of curtain, has improved the intensity of curtain again, has reduced the influence of wind-force to it, folds the shared volume of curtain and is far smaller than fixed cover and mobile cover; Curtain system adopts refractory glass fibre to weave cotton cloth and makes, and can stand splashing and corroding of zinc liquid and zinc fume for a long time, and in light weight, required driving motor power is little; The curtain system translational speed is fast, is in during inoperative to pack up folded state and be higher than zinc-plated driving, does not influence conventional zinc-plated operation; Curtain system has adopted PIC computer controlled automatic location and safe-guard system, can guarantee that zinc-plated flue dust collecting device operates reliable and securely.
The zinc-plated flue dust of collecting is by having the purified treatment tower of multilayer filler, absorbs ammonium chloride (NH in the zinc-plated flue gas with spraying the reverse filtration of absorption liquid
4And ammonia (NH Cl),
3), hydrogen chloride (HCl) and zinc oxide (ZnO); reduce of the pollution of zinc-plated flue dust, protected environment, and absorbed absorption liquid behind the zinc-plated flue dust and contain the galvanizing pre-treatment and help plating to handle required active ingredient environment; but reuse preparation quickening liquid, no discharging of waste liquid.
The present invention is simple in structure, makes with easy to maintenance, and area occupied is few, and is to the recovery and the good purification of zinc-plated flue gas, remarkable to economic benefit, society and environmental benefit.
Description of drawings
Fig. 1 is a curtain-type soot treatment and purification system for hot galvanizing structural representation of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiments of the present invention relate to a kind of curtain-type soot treatment and purification system for hot galvanizing, as shown in Figure 1, comprise zinc-plated flue dust collecting device and zinc-plated smoke and dust purifier, described zinc-plated flue dust collecting device comprises curtain system 2, support system 7, transmission system 3 and exhausting pipe-line system 4, described zinc-plated smoke and dust purifier comprises purified treatment tower 5 and centrifugal blower 6, zinc pot 1 outer periphery has described curtain system 2, adopt curtain system 2 can effectively collect zinc-plated flue dust, avoid it to escape, improve the plant working environment; Zinc pot 1 top is provided with described support system 7; The ceiling hold of described support system 7 is provided with transmission system 3; Described transmission system 3 is connected with described curtain system 2, curtain system 2 relies on transmission system 3 control cable drum and pulley automatic lifting curtain systems 2, when curtain system 2 rises to the top, the bottom of curtain system 2 is higher than the height of the zinc-plated driving in workshop, guarantees not influence zinc-plated operate as normal; The ceiling hold of described support system 7 is provided with exhausting pipe-line system 4, described exhausting pipe-line system 4 is made up of at least one main air draft and Duo Gen branch road exhaust column, the caliber of main air draft can be provided with according to the size of air quantity, the main air draft bottom surface is provided with many branch road exhaust columns, can realize evenly collecting the flue dust of zinc-plated generation, for example can adopt 2 side by side main air draft and the bottom surface of each root main air draft evenly distribute 8-12 branch road exhaust column as exhausting pipe-line system 4; Described exhausting pipe-line system 4 links to each other with described purified treatment tower 5 bottoms; Described purified treatment tower 5 tops link to each other with described centrifugal blower 6.
Curtain system 2 bottoms of described curtain-type soot treatment and purification system for hot galvanizing are provided with the framework of square steel tube weldering system, can avoid curtain system 2 rocking when oscilaltion, also can alleviate when zinc-plated wind-force to the influence of curtain system 2; Described curtain system 2 is divided into multistage (as being divided into the 2-3 section), the section with section between be connected by the stainless steel square tube.
Described curtain system 2 adopts computer controlled automatic location and safe-guard system 8 controls that are installed on the support system 7, and wherein, computer controlled automatic location and safe-guard system 8 can adopt PIC computer controlled automatic location and safe-guard system.When zinc-plated driving enters curtain system 2 workspaces, signal is sent in optoelectronic switch control by computer controlled automatic location and safe-guard system 8 automatically, provide response after computer controlled automatic location and safe-guard system 8 received signals, but have only zinc-plated driving ability effectively start decline button when correct stop position.After curtain system 2 starts, but the motion of computer controlled automatic location and safe-guard system 8 real-time onlines control curtain system 2 upper and lower, left and right.If during curtain system 2 declines, when people's process being arranged or barrier being arranged, computer controlled automatic location and safe-guard system 8 are responded to automatically, and curtain system 2 stops to descend, and reports to the police simultaneously, just can descend automatically after the eliminating unusually.
Described galvanizing is weaved cotton cloth with the curtain system 2 employing refractory glass fibres of curtain-type soot treatment and purification device and is made, because the temperature of zinc-plated flue dust has about 200 degree, and galvanized workpiece dries the danger that also has quick-fried zinc when incomplete, and the curtain that therefore needs to adopt refractory glass fibre to weave cotton cloth and make is to guarantee operator's safety.
Described galvanizing is provided with slippage guide rail 9 with the column support lower end of the support system 7 of curtain-type soot treatment and purification device, when described curtain system 2 drops to a half, the square steel tube framework of curtain system 2 bottoms enters described slippage guide rail 9, makes curtain system 2 form firm enclosure wall.
Described galvanizing is provided with multi-stage spray and multilayer filler with the purified treatment tower 5 of curtain-type soot treatment and purification device, absorption liquid is reverse contacts with spray for zinc-plated flue gas in tower, and zinc-plated flue dust has been carried out repeatedly spray to be handled, strengthen assimilation effect, the zinc-plated flue dust of handling through spray passes through the multilayer filler at last, filters out the solid particle in the zinc-plated flue dust.Wherein, how many number of times of spray and numbers of plies of filler can according to being provided with of zinc-plated flue dust, and for example purified treatment tower as shown in fig. 1 adopts the secondary spray to add two layers of filling-material structure.Absorbed spray absorption liquid behind the zinc-plated flue dust and contained the galvanizing pre-treatment and help plating to handle required active ingredient, but reuse preparation quickening liquid, no discharging of waste liquid.
Embodiments of the present invention also relate to a kind of galvanizing curtain-type soot treatment and purification method, may further comprise the steps: (1) zinc-plated driving marches to zinc pot top, when unplated piece is immersed the zinc bath, trigger the photoelectric control switch of computer controlled automatic location and safe-guard system, the curtain that is higher than zinc-plated driving is descended rapidly, form petticoat pipe; (2) utilize the peripheral petticoat pipe that forms of zinc pot to reduce distributing of zinc-plated flue dust, centrifugal blower carries out exhausting automatically, with zinc-plated flue dust suction main air draft, and enters in the purified treatment tower by pipeline; (3) after zinc-plated flue dust enters the purified treatment tower, handle ammonium chloride, ammonia, hydrogen chloride and the zinc oxide that filters in the zinc-plated flue dust through spray, and by the solid particle in the zinc-plated flue dust of filling adsorption; (4) the zinc-plated soot emissions that will purify are in atmospheric environment, and reclaim spray cleaning water; (5) after the zinc-plated end, make curtain rising return rapidly, the subsequent treatment operation is taken out and moved to zinc-plated driving with plating piece.
Be not difficult to find, around the zinc pot, be provided with curtain system, and on the ceiling hold of the support system above the zinc pot, be provided with the zinc-plated flue gas of exhausting pipeline systematic collection, reduced the dissipation of zinc-plated flue dust by blocking of curtain, collection efficiency is more than 95%, and is suitable with the collection efficiency of mobile cover gathering system and fixed cover gathering system; Curtain system is divided into multistage, is connected by the stainless steel square tube between section and the section, neither influences folding of curtain, has improved the intensity of curtain again, has reduced the influence of wind-force to it, folds the shared volume of curtain and is far smaller than fixed cover and mobile cover; Curtain system adopts refractory glass fibre to weave cotton cloth and makes, and can stand splashing and corroding of zinc liquid and zinc fume for a long time, and in light weight, required driving motor power is little; The curtain system translational speed is fast, is in during inoperative to pack up folded state and be higher than zinc-plated driving, does not influence conventional zinc-plated operation; Curtain system has adopted PIC computer controlled automatic location and safe-guard system, can guarantee that zinc-plated flue dust collecting device operates reliable and securely.
The zinc-plated flue dust of collecting is by having the purified treatment tower of multilayer filler, absorbs ammonium chloride (NH in the zinc-plated flue gas with spraying the reverse filtration of absorption liquid
4And ammonia (NH Cl),
3), hydrogen chloride (HCl) and zinc oxide (ZnO); reduce of the pollution of zinc-plated flue dust, protected environment, and absorbed absorption liquid behind the zinc-plated flue dust and contain the galvanizing pre-treatment and help plating to handle required active ingredient environment; but reuse preparation quickening liquid, no discharging of waste liquid.
The present invention is simple in structure, makes with easy to maintenance, and area occupied is few, and is to the recovery and the good purification of zinc-plated flue gas, remarkable to economic benefit, society and environmental benefit.
Claims (8)
1. curtain-type soot treatment and purification system for hot galvanizing, comprise zinc-plated flue dust collecting device and zinc-plated smoke and dust purifier, described zinc-plated flue dust collecting device comprises curtain system (2), support system (7), transmission system (3) and exhausting pipe-line system (4), described zinc-plated smoke and dust purifier comprises purified treatment tower (5) and centrifugal blower (6), it is characterized in that zinc pot (1) outer periphery has described curtain system (2); Zinc pot (1) top is provided with described support system (7); Described support system (7) is provided with described transmission system (3); Described transmission system (3) is connected with described curtain system (2), is used for the described curtain system of lifting (2); Described support system (7) upper end is provided with exhausting pipe-line system (4); Described exhausting pipe-line system (4) links to each other with described purified treatment tower (5) bottom; Described purified treatment tower (5) top links to each other with described centrifugal blower (6).
2. curtain-type soot treatment and purification system for hot galvanizing according to claim 1 is characterized in that, described curtain system (2) bottom is provided with the framework of square steel tube weldering system; Described curtain system (2) is divided into two sections at least, the section with section between be connected by the stainless steel square tube.
3. curtain-type soot treatment and purification system for hot galvanizing according to claim 1 is characterized in that, described curtain system (2) adopts refractory glass fibre to weave cotton cloth and makes.
4. curtain-type soot treatment and purification system for hot galvanizing according to claim 1 is characterized in that, is in during described curtain system (2) inoperative and packs up folded state and be higher than zinc-plated driving.
5. curtain-type soot treatment and purification system for hot galvanizing according to claim 1 is characterized in that, described support system (7) lower end is provided with slippage guide rail (9).
6. curtain-type soot treatment and purification system for hot galvanizing according to claim 1 is characterized in that, described curtain system (2) is by the computer controlled automatic location and safe-guard system (8) control that are installed on the described support system (7).
7. curtain-type soot treatment and purification system for hot galvanizing according to claim 1 is characterized in that, described purified treatment tower (5) adopts at least the secondary spray to add at least two layers of filling-material structure.
8. a galvanizing is characterized in that with curtain-type soot treatment and purification method, may further comprise the steps:
(1) zinc-plated driving marches to zinc pot top, when unplated piece is immersed the zinc bath, triggers the photoelectric control switch of automatic location of computer and safe-guard system, and the curtain that is higher than zinc-plated driving is descended rapidly, forms petticoat pipe;
(2) utilize the peripheral petticoat pipe that forms of zinc pot to reduce distributing of zinc-plated flue dust, centrifugal blower carries out exhausting automatically, with zinc-plated flue dust suction main air draft, and enters in the purified treatment tower by pipeline;
(3) after zinc-plated flue dust enters the purified treatment tower, handle ammonium chloride, ammonia, hydrogen chloride and the zinc oxide that filters in the zinc-plated flue dust through spray, and by the solid particle in the zinc-plated flue dust of filling adsorption;
(4) the zinc-plated soot emissions that will purify are in atmospheric environment, and reclaim spray cleaning water;
(5) after the zinc-plated end, make curtain rising return rapidly, the subsequent treatment operation is taken out and moved to zinc-plated driving with plating piece.
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| CN105624598A (en) * | 2014-11-16 | 2016-06-01 | 江苏天南电力器材有限公司 | Galvanizing rig |
| CN105688584A (en) * | 2016-04-12 | 2016-06-22 | 巩义市恒星金属制品有限公司 | Steel wire hot-dipping tank smoke delivering and purifying component |
| CN105921918A (en) * | 2016-05-26 | 2016-09-07 | 安徽宏源铁塔有限公司 | Smoke removing equipment used for electric welding workshop |
| CN110523736A (en) * | 2019-07-26 | 2019-12-03 | 徐州徐工养护机械有限公司 | A kind of liftable shrouds formula smoke collecting device |
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| CN105018876A (en) * | 2014-04-17 | 2015-11-04 | 江苏太阳光伏科技有限公司 | Isolation room of solder strip tin plating workshop |
| CN104313526A (en) * | 2014-10-28 | 2015-01-28 | 沈阳化工大学 | Device for collecting zinc smoke of hot-dip galvanizing workshop |
| CN105624598A (en) * | 2014-11-16 | 2016-06-01 | 江苏天南电力器材有限公司 | Galvanizing rig |
| CN105688584A (en) * | 2016-04-12 | 2016-06-22 | 巩义市恒星金属制品有限公司 | Steel wire hot-dipping tank smoke delivering and purifying component |
| CN105688584B (en) * | 2016-04-12 | 2018-07-31 | 巩义市恒星金属制品有限公司 | Hot dip of steel wire groove body smoke delivery purification assembly |
| CN105921918A (en) * | 2016-05-26 | 2016-09-07 | 安徽宏源铁塔有限公司 | Smoke removing equipment used for electric welding workshop |
| CN110523736A (en) * | 2019-07-26 | 2019-12-03 | 徐州徐工养护机械有限公司 | A kind of liftable shrouds formula smoke collecting device |
| CN110935706B (en) * | 2019-11-27 | 2021-05-14 | 浙江盛达铁塔有限公司 | Dust removal petticoat pipe mounting structure |
| CN110935706A (en) * | 2019-11-27 | 2020-03-31 | 浙江盛达铁塔有限公司 | Dust removal petticoat pipe mounting structure |
| CN113145602A (en) * | 2019-11-27 | 2021-07-23 | 浙江盛达铁塔有限公司 | Galvanized bath is with dust removal petticoat pipe based on walk platform |
| CN111841177A (en) * | 2020-08-28 | 2020-10-30 | 青岛龙程昊宇工贸有限公司 | Galvanized collecting equipment |
| CN112170428A (en) * | 2020-09-17 | 2021-01-05 | 余姚市永林机械科技有限公司 | Curtain type smoke dust treatment system and method for hot galvanizing |
| CN112170428B (en) * | 2020-09-17 | 2021-09-21 | 余姚市永林机械科技有限公司 | Curtain formula smoke and dust processing system for hot-galvanize |
| CN113333422A (en) * | 2021-06-15 | 2021-09-03 | 庄浩鑫 | Telescopic ventilation system for ventilation based on laboratory |
| CN113333422B (en) * | 2021-06-15 | 2022-09-30 | 江苏万融系统集成有限公司 | Telescopic ventilation system for ventilation based on laboratory |
| WO2023227083A1 (en) * | 2023-02-10 | 2023-11-30 | 徐州瑞马智能技术有限公司 | Lifting-type top-suction environmentally-friendly fume exhaust beam for zinc pot cover |
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