CN102847631A - Nozzle device and method for cleaning surfaces of metal strips - Google Patents
Nozzle device and method for cleaning surfaces of metal strips Download PDFInfo
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- CN102847631A CN102847631A CN201110180651XA CN201110180651A CN102847631A CN 102847631 A CN102847631 A CN 102847631A CN 201110180651X A CN201110180651X A CN 201110180651XA CN 201110180651 A CN201110180651 A CN 201110180651A CN 102847631 A CN102847631 A CN 102847631A
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Abstract
Disclosed are a nozzle device and a method for cleaning surfaces of metal strips. The nozzle device comprises at least one main spray unit and at least one sub spray unit. Each main spray unit comprises multiple rows of nozzles, the nozzles in each row are distributed at the same intervals, each front row of nozzles and the corresponding back row of nozzles are arrayed in a staggered manner along the width direction of a metal strip so as to form a nozzle array, the width of the nozzle array corresponds to the full-width of the narrowest band steel on a production line, each row of nozzles is connected with a header pipe, and the header pipes are connected to a main water-inlet manifold. Each sub spray unit comprises at least two rows of nozzles arranged longitudinally, each row of nozzles is connected with a sub header pipe, and each adjacent two rows of nozzles are respectively arranged on two sides of the nozzle array of the corresponding main spray unit symmetrically, and are connected to a sub water-inlet manifold. The nozzle array can be controlled flexibly, the nozzles at positions distant from the edge of the band steel by different distances in the width direction can be turned on or off, so that surfaces of different-width cold-state steel plates on the continuous production line can be continuously cleaned in a dynamically variable-width manner.
Description
Technical field
The present invention relates to steel plate technique of scale removal field, be particularly related to metal plate and belt surface clean spray nozzle device and cleaning method thereof, be mainly used in removing continuously the oxide layer on the cold conditions hot rolled steel plate surface of different width specifications, corrosion layer, adhesion etc. being carried out continuity, guarantee that different in width gauge strip steel can guarantee all the time that when carrying out continuous de-scaling the firecoat on whole plate face width degree can effectively remove totally, stop the surface and exist local firecoat residual, improve flexibility and the effect of jetting type de-scaling.
Background technology
When adopting jet that de-scaling is carried out in the metal surface, because the width value of metal plate and belt is larger, adopt single-nozzle to eliminate rust or usually be difficult to realize all standing on the width during de-scaling, so usually on the width of metal plate and belt continuously dislocation be furnished with the nozzle of a plurality of same models, same how much fixed forms, guarantee namely that so metal plate and belt can realize even, stable de-scaling by the nozzle overlay area time.Yet for continous way de-scaling production line, for improving de-scaling efficient, guaranteeing the continous way de-scaling, to carry out end to end rapid welding between each volume after normally each volume metal plate and belt being opened, reach a kind of without hair style without the line length metal plate coils, thereby can guarantee all the time the continuous feeding of subsequent technique section, this technology mode can be described as continuous de-scaling (or continous way Treatment of Metal Surface).
This continous way de-scaling is because width specifications, the thickness specification of each coiled sheet have difference to a certain degree, continuous sour rolling line such as certain iron company, the steel plate width specification of its supplied materials is frequently switched between 700～1200mm, the so frequent width value that switches is for traditional Pickling Descaling, its de-scaling stability obtains to guarantee very easily, and for adopting jetting type physics descaling process, then brought tremendous influence.This impact is mainly reflected in the following aspects:
1, the nozzle quantity of setting up must be take the widest specification of width as object, and the nozzle quantity of required layout is numerous.
2, when processing narrow specification strip, limit section surpasses the wide nozzle of plate and still can continue to spray, and causes the waste of huge electric energy, water resource.
3, surpass the wide nozzle of plate and all be arranged symmetrically with because of the positive and negative in strip, can mutual aspectantly carry out direct projection when it sprays, huge jet power can directly cause both mutually to destroy, and seriously reduces the service life of nozzle.
Just adopt a kind of mode that is in tilted layout such as Japan Patent JP55100814A, its objective is when the wide specification of plate is switched, carry out integral inclination based on the nozzle that broadens or narrow down to whole wide layout, its purpose still guarantees all standing of cleaning surface, yet this arrangement has very strict demand to the intensity distribution of injection stream, because after the angle change, its original even intensity regularity of distribution namely is broken, even intensity distributed when the intensity Distribution of each nozzle must strictly satisfy the inclination different angles, and the jet of each nozzle is not interfered mutually, and therefore the feasibility of this scheme in the use of reality is poor.
Japan Patent JP01278907A adopts two kinds of different jet to carry out de-scaling, and the arrangement mode of its nozzle just is simple in-line arrangement perpendicular to the strip traffic direction, inevitable rear above three the cited remarkable defectives that produce during actual production.
Simultaneously, the domestic scheme that also exists many manufacturers, equipment supplier to propose for arrangement of nozzles, remove the cooling of hot rolling firecoat, continuous casting billet etc. such as water under high pressure, the layout of its nozzle mainly still adopts the mode of traditional straight layout of Breadth Maximum specification.
Summary of the invention
The objective of the invention is to design a kind of metal plate and belt surface clean spray nozzle device and cleaning method thereof, energy is the Control Nozzle matrix flexibly, this nozzle of adjusting the distance steel edge portion different in width position opens and closes, realization is to different in width specification on the cold conditions steel-plate continuous production line and physically adopt the continuous metal sheet that is welded to connect to bring Mobile state into, the continuous surface de-scaling of Trapezoidal, stop the energy in the specification switching, the waste of water resource, simultaneously greatly possiblely stop the phenomenon that correlation appears in nozzle up and down, the arrangement of nozzles mode of jet de-scaling is carried out flexibly, efficiently control.
For achieving the above object, technical scheme of the present invention is:
Nozzle matrix control method of the present invention is based on the intensity distribution rule of nozzle self, all the time the even intensity with plate width direction is distributed as prerequisite, to laterally with the spacing of longitudinal nozzle, sputtering target apart from reasonably controlling, its objective is that reaching the cleaning efficiency why not the product line is taken up an official post with the wide nozzle of plate reaches the highest.
Particularly, metal plate and belt surface clean spray nozzle device of the present invention, it comprises, at least one main injection unit, comprise and be positioned at the metal plate and belt middle part along the parallel uniform some row's nozzles of metal plate and belt length direction, equidistant placement between each nozzle among every row, forward and backward row's nozzle form a nozzle matrix along metal plate and belt width Heterogeneous Permutation; All perpendicular to the traffic direction of metal plate and belt, the vertical range on nozzle distance metal plate and belt surface equates each nozzle; The full plate of the narrowest gauge strip steel of the corresponding product of the width of nozzle matrix line is wide; And, be connected to a main collector along each row nozzle of metal plate and belt length direction; Those main collectors are connected in a main water inlet manifold; At least one sub-injection unit comprises the nozzle of at least two row longitudinal arrangements, and each row nozzle is connected to a subset pipe, and this two row nozzle is the nozzle matrix both sides of symmetrical main injection unit respectively, is arranged in parallel with every row nozzle of nozzle matrix; This two row nozzle is connected in a sub-water inlet manifold.
The cleaning method of metal plate and belt surface clean spray nozzle device of the present invention, metallic plate is delivered to cleaning nozzle device from slewing rollers, stabilizing roller, be sent to the subsequent treatment process section through cleaning nozzle device injection, cleaning, cleaning nozzle device is wide with the full plate of the narrowest gauge strip steel of main injection unit corresponding product line; Width according to metal plate and belt opens or closes sub-injection unit, realizes producing the wide cleaning of full plate of metal plate and belt in the line.
The effective cleaning width value of described injection master unit is greater than the width value of the narrowest specification steel plate that produces line.
The medium that sprays in the described nozzle is Single Medium water, or is mixed with the water mixed liquid of hard composition granule, and this hard composition granule comprises garnet, brown corundum, quartz sand, iron sand, shot, steel sand or steel wire cut pill.
The granularity of described hard composition granule is between 10 orders～200 orders.
The w/v of hard composition granule and water is 1%～80% in the mixed liquor that sprays in the described nozzle.
Nozzle matrix of the present invention is realized the wide surperficial firecoat of the full plate of the narrowest gauge strip steel of continuous product line is removed; Simultaneously, this nozzle matrix also comprises several injection subelements, and these spray subelement in full accord with the injection master unit with the wide arrangement of nozzles mode of the unit board on the steel tape transport direction, switching by dynamic these subelements of adjustment, realization is carried out successional width to the wide specification of different plates on the continuous product line and is switched, and guarantees the continous way jet de-scaling to the different in width specification steel plate.
The advantage of the relative prior art of the present invention:
1, the present invention is by arranging injection unit at width, to control different effectively jet width units as control strategy, realizes carrying out surperficial all standing to each different plates are wide, can well realize the surperficial de-scaling wide to different plates.
2, the sky of limit section portion nozzle is penetrated, correlation because stop, and can significantly improve limit section nozzle in the time of service life, greatly reduces energy waste, can directly reduce the production cost of manufacturing enterprise.
Description of drawings
Fig. 1 is the structural representation of metal plate and belt surface clean spray nozzle device one embodiment of the present invention.
Fig. 2 is the schematic diagram of cleaning method of the present invention.
The specific embodiment
Referring to Fig. 1, Fig. 2, metal plate and belt surface clean spray nozzle device one embodiment of the present invention, it comprises, a main injection unit 1, comprise and be positioned at metal plate and belt 100 middle parts along the parallel uniform some row's nozzles 11 of metal plate and belt length direction, 12, equidistant placement between each nozzle among every row, forward and backward row's nozzle form a nozzle matrix along metal plate and belt width Heterogeneous Permutation; All perpendicular to the traffic direction of metal plate and belt, the vertical range on nozzle distance metal plate and belt surface equates each nozzle; The full plate of the narrowest gauge strip steel of the corresponding product of the width of nozzle matrix line is wide; And, be connected to a main collector 2 along each row nozzle of metal plate and belt 100 length directions; Those main collectors 2 are connected in a main water inlet manifold 3; Three sub-injection units 4,4 ', 4 "; respectively comprise the nozzle of two row longitudinal arrangements; each row nozzle is connected to a subset pipe 5,5 ', 5 ", these each two row nozzles are the nozzle matrix both sides of symmetrical main injection unit respectively, are arranged in parallel with every row nozzle of nozzle matrix; These each two row nozzles are connected to a sub-water inlet manifold 6,6 ', 6 ".
Referring to Fig. 2, the cleaning method of metal plate and belt surface clean spray nozzle device of the present invention, metallic plate 100 is delivered to cleaning nozzle device A from slewing rollers 7, stabilizing roller 8, spray, clean and transmit through stabilizing roller 8 ' to subsequent treatment process section 9 through cleaning nozzle device, cleaning nozzle device is wide with the corresponding full plate of the narrowest gauge strip steel that produces line in main injection unit; Width according to metal plate and belt opens or closes sub-injection unit, realizes producing the wide cleaning of full plate of metal plate and belt in the line.
The effective cleaning width value in described main injection unit is greater than the width value of the narrowest specification steel plate that produces line.
The medium that sprays in the described nozzle is Single Medium water, or is mixed with the water mixed liquid of hard composition granule, and this hard composition granule comprises garnet, brown corundum, quartz sand, iron sand, shot, steel sand or steel wire cut pill.The granularity of described hard composition granule is between 10 orders～200 orders.The volume ratio of hard composition granule and water is 1%～80% in the mixed liquor that sprays in the described nozzle.
Metal plate and belt 100 enters injection unit under the tensioning state of front and back tension force unit, and stabilizing roller 8,8 ' maintenance metal plate and belt, 100 plate faces that injection unit is arranged by front and back are exceptionally straight, keep amount of jitter in the reasonable scope; At this moment, if the width value of metal plate and belt 100 is for producing the widest specification of line, then the operative employee will all open all main, subset pipes, realize that the nozzle in all injection units keeps spray regime, namely realize that the widest steel plate carries out the wide de-scaling of full plate in the line to producing this moment.
When metal plate and belt 100 switches to the narrowest specification, close all the sub-injection units except the main injection unit this moment, namely keeping spraying master unit often opens, this moment, the effective width of jet de-scaling reduced immediately, become the effective width of main injection unit energy de-scaling, thereby realized the wide specification of plate is switched fast.
When the width value of metal plate and belt 100 is between narrow and the widest specification, can be according to master, sub-injection unit 1,4,4 ', 4 " effective jet width value add up and get final product.As:
The effective de-scaling width value of main injection unit 1 under certain pressure is L1;
When sub-injection unit 4 is opened, can increase L2 on the basis of main injection unit 1 width;
When sub-injection unit 4 ' is opened, can be in the main injection unit 1 increase L3 with the basis of 4 yuan of cleaning widths of sub-injection unit;
Sub-injection unit 4 " when opening, can lead, the cleaning width basis of sub-injection unit 1,4,4 ' when opening increase L4;
So, can set (supposing that the wide value of plate is H) when wide to different plates,, the switching mode of jet de-scaling unit is as follows:
When H is the narrowest specification, namely during H≤L1, only open main injection unit 1 main collector;
When H satisfies: L1≤H≤L1+L2, open master, sub-injection unit 1,4 two unit simultaneously;
When H satisfies: L1+L2≤H≤L1+L2+L3, open master, sub-injection unit 1,4,4 ' three unit simultaneously;
When H satisfies: L1+L2+L3≤H≤L1+L2+L3+L4, then open simultaneously main, sub-injection unit 1,4,4 ', 4 ".
The steel plate specification that the below produces on the line take certain bar cold conditions de-scaling fluctuates as example between 600～1200mm.The expulsion pressure of nozzle is set in 30～80MPa, and the flow of each nozzle is in 10L/min～60L/min level.
The effective de-scaling width value of main injection unit 1 under 30～80MPa pressure is 650mm;
When sub-injection unit 4 is opened, can be on the basis of main injection unit 1 cell width, both sides increase respectively 100mm.
When sub-injection unit 4 ' is opened, can be on the basis of main injection unit 1 and sub-injection unit 4 cleaning widths, both sides increase respectively 100mm.
Sub-injection unit 4 " when opening, can lead, on the cleaning width basis of sub-injection unit 1,4,4 ' when opening, both sides increase respectively 100mm.
So, can set (supposing that the wide value of plate is H) when wide to different plates, the switching mode of jet de-scaling unit is as follows:
When H is the narrowest specification, namely during H≤600mm, only open main injection unit 1 main collector;
When H satisfies: 600≤H≤800mm, open master, sub-injection unit 1,4 two unit simultaneously;
When H satisfies: 800≤H≤1000mm, open master, sub-injection unit 1,4,4 ' three unit simultaneously;
When H satisfies: 1000≤H≤1200mm, then open simultaneously main, sub-injection unit 1,4,4 ', 4 ".
Realized that so namely the nozzle matrix unit is by switching flexibly between 600～1200mm.Do not need during this time pressure charging system, pipeline etc. is carried out any adjustment, significantly improved the technology controlling and process ability, enhance productivity.
Nozzle matrix of the present invention is realized the wide surperficial firecoat of the full plate of the narrowest gauge strip steel of continuous product line is removed; Simultaneously, this nozzle matrix also comprises several injection subelements, and these spray subelement in full accord with the injection master unit with the wide arrangement of nozzles mode of the unit board on the steel tape transport direction, switching by dynamic these subelements of adjustment, realization is carried out successional width to the wide specification of different plates on the continuous product line and is switched, and guarantees the continous way jet de-scaling to the different in width specification steel plate.
The present invention takes full advantage of the de-scaling width characteristic under the definition relative velocity of nozzle, the flexible adjustment of nozzle unit when realization is cleaned the metal plate and belt surface.
Claims (6)
1. metal plate and belt surface clean spray nozzle device is characterized in that, comprise,
At least one main injection unit comprises being positioned at the metal plate and belt middle part along the parallel uniform some row's nozzles of metal plate and belt length direction, equidistant placement between each nozzle among every row, and forward and backward row's nozzle forms a nozzle matrix along metal plate and belt width Heterogeneous Permutation; All perpendicular to the traffic direction of metal plate and belt, the vertical range on nozzle distance metal plate and belt surface equates each nozzle; The full plate of the narrowest gauge strip steel of the corresponding product of the width of nozzle matrix line is wide; And, be connected to a main collector along each row nozzle of metal plate and belt length direction; Those main collectors are connected in a main water inlet manifold;
At least one sub-injection unit comprises the nozzle of at least two row longitudinal arrangements, and each row nozzle is connected to a subset pipe, and this two row nozzle is symmetrically arranged in respectively the nozzle matrix both sides of main injection unit, is arranged in parallel with every row nozzle of nozzle matrix; This two row nozzle is connected in a sub-water inlet manifold.
2. the cleaning method of metal plate and belt surface clean spray nozzle device as claimed in claim 1, metallic plate is delivered to cleaning nozzle device from slewing rollers, stabilizing roller, be sent to the subsequent treatment process section through cleaning nozzle device injection, cleaning, cleaning nozzle device is wide with the full plate of the narrowest gauge strip steel of main injection unit corresponding product line; Open or close sub-injection unit according to dynamic adjustment of the width of metal plate and belt, realize producing the wide cleaning of full plate of metal plate and belt in the line.
3. the cleaning method of metal plate and belt surface clean spray nozzle device as claimed in claim 2 is characterized in that, the effective cleaning width value in described main injection unit is greater than the width value of the narrowest specification steel plate that produces line.
4. the cleaning method of metal plate and belt surface clean spray nozzle device as claimed in claim 2, it is characterized in that, the medium that sprays in the described nozzle is Single Medium water, or being mixed with the water mixed liquid of hard composition granule, this hard composition granule comprises garnet, brown corundum, quartz sand, iron sand, shot, steel sand or steel wire cut pill.
5. the cleaning method of metal plate and belt surface clean spray nozzle device as claimed in claim 4 is characterized in that the granularity of described hard composition granule is between 10 orders～200 orders.
6. such as the cleaning method of metal plate and belt surface clean spray nozzle device as described in claim 4 or 5, it is characterized in that the volume ratio of hard composition granule and water is 1%～80% in the mixed liquor that sprays in the described nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110180651XA CN102847631A (en) | 2011-06-29 | 2011-06-29 | Nozzle device and method for cleaning surfaces of metal strips |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110180651XA CN102847631A (en) | 2011-06-29 | 2011-06-29 | Nozzle device and method for cleaning surfaces of metal strips |
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| CN102847631A true CN102847631A (en) | 2013-01-02 |
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| CN201110180651XA Pending CN102847631A (en) | 2011-06-29 | 2011-06-29 | Nozzle device and method for cleaning surfaces of metal strips |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103962400A (en) * | 2013-01-31 | 2014-08-06 | 宝山钢铁股份有限公司 | Arrangement mode for mixed jet washing nozzles |
| WO2014146540A1 (en) * | 2013-03-19 | 2014-09-25 | 宝山钢铁股份有限公司 | Method and apparatus for treating surface of steal plate |
| CN110813587A (en) * | 2018-08-14 | 2020-02-21 | 比亚迪股份有限公司 | Electronic product shell, electronic product cover plate spraying method and spraying equipment |
| WO2020051998A1 (en) * | 2018-09-10 | 2020-03-19 | 惠科股份有限公司 | Washing method and washing device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103962400A (en) * | 2013-01-31 | 2014-08-06 | 宝山钢铁股份有限公司 | Arrangement mode for mixed jet washing nozzles |
| WO2014146540A1 (en) * | 2013-03-19 | 2014-09-25 | 宝山钢铁股份有限公司 | Method and apparatus for treating surface of steal plate |
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| CN110813587A (en) * | 2018-08-14 | 2020-02-21 | 比亚迪股份有限公司 | Electronic product shell, electronic product cover plate spraying method and spraying equipment |
| CN110813587B (en) * | 2018-08-14 | 2022-01-07 | 比亚迪股份有限公司 | Electronic product shell and electronic product cover plate spraying method |
| WO2020051998A1 (en) * | 2018-09-10 | 2020-03-19 | 惠科股份有限公司 | Washing method and washing device |
| US11541437B2 (en) | 2018-09-10 | 2023-01-03 | HKC Corporation Limited | Cleaning method and cleaning device |
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Application publication date: 20130102 |