CN209113998U - A kind of strip pickling production line - Google Patents
A kind of strip pickling production line Download PDFInfo
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- CN209113998U CN209113998U CN201821962934.3U CN201821962934U CN209113998U CN 209113998 U CN209113998 U CN 209113998U CN 201821962934 U CN201821962934 U CN 201821962934U CN 209113998 U CN209113998 U CN 209113998U
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Abstract
The utility model provides a kind of strip pickling production line, it is related to metallurgy industry strip pickling technical field, solving existing in the prior art leads to the technical problem that graphite heat exchanger usage amount is big and steam consumption is big because strip and acid solution are there are the temperature difference, including uncoiler, transmission device, heating device and acid dip pickle, the heating device includes heating tank, hot water is contained in the heating tank, in which: strip can be sequentially delivered to the heating tank and the acid dip pickle by the transmission device after the uncoiler uncoiling；Steam injection equipment is provided in the heating tank, the steam of the steam injection equipment injection can form steam water interface with the hot water in the heating tank and wash away the strip to improve the temperature of the strip；The usage amount and steam consumption of graphite heat exchanger, improve pickling efficiency, reduce operating cost when the utility model effectively reduces strip pickling.
Description
Technical field
The utility model relates to metallurgy industry strip pickling technical fields, and in particular to a kind of strip pickling production line.
Background technique
In the process of cold-strip steel, in order to guarantee the quality requirement of cold-strip steel, raw material hot-rolled coil will be through
A series of process are crossed, just can enter cold rolling mill, most important of which is that hot-rolled coil is added by pickling lines
Work mainly cleans out the oxide on hot-rolled coil surface with chemical pickling technique at acid-cleaning plate, this process, subsequently into
Cold rolling mill is at cold-strip steel.
At present there are mainly three types of the acid cleaning process of cold-strip steel: one, semicontinuous pickling lines；Two, horizontal continuous acid-washing
Production line；Three, tower continuous acid-washing production line；And first two pickling lines are directed to, the pickling production of the overwhelming majority both at home and abroad
Line is all using entering first descaling bath under hot-rolled coil normal temperature state, and the temperature of strip is about at 20 DEG C or so, strip
It is the temperature of pickling solution and the concentration of hydrochloric acid, the adjustment of concentration of hydrochloric acid that two key factors of pickling speed are influenced in acid cleaning process
There is perfect technique, and the problem of for pickling solution temperature, current pickling lines enter descaling bath due to strip
Temperature it is relatively low, descaling bath strip operation when can take away a large amount of heat, make the temperature of hydrochloric acid that ideal pickling temperature be not achieved
Degree, this is greatly lowered the pickling speed of strip, and ideal pickling temperature is 75 DEG C to 90 DEG C, as long as into the band of descaling bath
Steel temperature control at 80 DEG C or so, so that it may the pickling speed for greatly improving strip, in semicontinuous pickling lines, generally by
The descaling bath that 4 length are 12.5m forms, and each descaling bath is equipped with two graphite heat exchangers to heat hydrochloric acid, not due to strip
Take away the heat of hydrochloric acid with stopping, this partial heat all leans on hydrochloric acid to pass through the heat that graphite heat exchanger exchange generates and supplements, stone
Black heat exchanger is expensive, and the thermal efficiency is also relatively low, very big to the consumption of steam, when graphite heat exchanger is heated to hydrochloric acid
A large amount of acid mist can be also generated at 75 to 90 DEG C, although these acid mists are by processing, still some can be also discharged into
In atmosphere, environmental pollution is caused.
A kind of strip pickling production line disclosed in Chinese patent document, including uncoiler, straightener, acid dip pickle, washing
Device, drying device, rear fire set hole, bead cutter and crimping machine, acid dip pickle include multiple descaling baths, and the production line is to strip
During carrying out pickling, strip can ceaselessly take away the heat of acid solution in descaling bath when passing through descaling bath, to supplement this part
The descaling bath of dispersed heat, the production line is equipped with graphite heat exchanger, is supplemented by the heat of graphite heat exchanger exchange generation,
To make the acid solution in descaling bath be maintained at the optimum temperature of pickling.
Applicant compares prior art discovery and at least there is following technical problem:
1. when pickling, strip ceaselessly takes away the heat of acid solution in descaling bath, since the temperature of acid solution is not achieved preferably
Pickling temperature leads to the reduction of strip pickling speed, in order to be maintained at pickling temperature between 75 DEG C to 90 DEG C it is necessary to increasing
Add the usage amount and steam consumption of graphite heat exchanger.
2. directly heating acid solution by graphite heat exchanger, a large amount of acid mists can be generated, is discharged into air and will cause environment dirt
Dye.
3. strip after straightener breaks phosphorus, is directly entered acid dip pickle, acid solution consumption is big, and belt steel surface is floating
Rust, greasy dirt and impurity will cause the blocking of duct and valve.
Utility model content
The purpose of the utility model is to provide a kind of strip pickling production lines, existing in the prior art because of strip to solve
Lead to the technical problem that graphite heat exchanger usage amount is big and steam consumption is big there are the temperature difference with acid solution；The utility model provides
Many technical solutions in many technical effects that can be generated of optimal technical scheme (guide roller is provided in heating tank can
It guides strip by the hot water in heating tank, improves heat transfer efficiency；Steam injection equipment, which is arranged in the hot water, makes injection
Steam is mixed with hot water can quickly form steam water interface, on the one hand can be improved heating efficiency, on the other hand can wash away
Fall spot, impurity and the oxide of belt steel surface；By two sides above and below the strip of heating tank be provided with steam injection equipment into
One step improves heating efficiency and cleaning effect；Flow control valve can control the heating temperature of strip by control steam flow
Degree；Squeeze roller can dry the liquid of belt steel surface, avoid dilution acid solution；Straightener has the function of improving plate shape and broken phosphorus
Effect；Guide roller can be transmitted strip and provide precondition for the formation of production line；Acid dip pickle carries out the strip after heating
Pickling substantially reduces usage amount and workload of graphite heat exchanger etc.)；Elaboration as detailed below.
To achieve the above object, the utility model provides following technical scheme:
A kind of strip pickling production line provided by the utility model, including uncoiler, transmission device, heating device and pickling
Device, the heating device include heating tank, are contained with hot water in the heating tank, in which: strip is through the uncoiler uncoiling
After can be sequentially delivered to the heating tank and the acid dip pickle by the transmission device；Steam is provided in the heating tank
Injection apparatus, the steam of the steam injection equipment injection can form steam water interface with the hot water in the heating tank and wash away institute
Strip is stated to improve the temperature of the strip.
Preferably, the transmission device includes guide roller, the guide roller is provided in the heating tank, strip is described
It can pass through out of the heating tank hot water under the guidance of guide roller.
Preferably, the steam injection equipment is arranged in the hot water.
Preferably, the quantity of the steam injection equipment is two and two steam injection equipments are oppositely arranged on institute
State the two sides up and down of strip in hot water.
Preferably, the steam injection equipment includes steam spray beam, is provided with flow control valve on the steam spray beam, institute
The heating temperature of strip can be changed by changing steam flow by stating flow control valve.
Preferably, drying device is provided between the heating device and the acid dip pickle, the drying device is used for
The liquid of the dry belt steel surface.
Preferably, the drying device includes squeeze roller.
Preferably, the guide roller is provided between two devices adjacent on the strip pickling production line.
Preferably, the strip pickling production line further includes straightener, and the straightener is arranged in the uncoiler and institute
It states between heating device.
Preferably, the acid dip pickle includes descaling bath, is provided with acid solution in the descaling bath.
A kind of strip pickling production line provided by the utility model at least has following technical effect that
Strip can be sequentially delivered to the heating tank and the acid by the transmission device after the uncoiler uncoiling
Cleaning device, the uncoiler and the transmission device provide transmission power for strip, provide premise for the heating before strip pickling
Condition；Steam injection equipment is provided in the heating tank, the steam of the steam injection equipment injection can be with the heating tank
Interior hot water forms the strip and acid solution that steam water interface washes away the strip to improve the temperature of the strip, after heating
There is no the temperature difference, the heat of acid solution will not be taken away, on the basis of ensure that pickling speed, the use of graphite heat exchanger can be reduced
Amount and steam consumption, optimize the capacity of steam boiler and the arrangement of pickling pipeline, effectively reduce operating cost, avoid because
Acid solution is directly heated to security risk brought by environment, while the steam water interface sprayed can generate higher turbulent flow greatly
Ground improves the heat transfer efficiency of strip, and the steam water interface sprayed can wash away belt steel surface impurity and oxide, saves
About later period pickling when acid solution dosage, the blocking of pipeline and valve caused by avoiding because of impurity, make equipment operation it is more permanent.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the utility model structure diagram；
Fig. 2 is the structure of the heating device of the utility model；
Appended drawing reference
1- uncoiler；2- straightener；3- heating device；31- heating tank；32- steam injection equipment；321- steam sprays beam；
322- steam jet；33- water inlet line；34- drainage pipeline；4- drying device；5- acid dip pickle；6- transmission device.
Specific embodiment
To keep the purpose of this utility model, technical solution and advantage clearer, below by the technology to the utility model
Scheme is described in detail.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not before making creative work
Obtained all other embodiment is put, the range that the utility model is protected is belonged to.
The utility model provides a kind of strip pickling production line, such as Fig. 1 the utility model structure diagram and Fig. 2 this reality
Shown in New Heating structural schematic diagram, including uncoiler 1, transmission device 6, heating device 3 and acid dip pickle 5, heating
Device 3 includes heating tank 31, is contained with hot water in heating tank 31, in which: strip can pass through transmission device after 1 uncoiling of uncoiler
6 are sequentially delivered to heating tank 31 and acid dip pickle 5；Steam injection equipment 32, steam injection equipment 32 are provided in heating tank 31
The steam of injection can form steam water interface with the hot water in heating tank 31 and wash away the strip to improve the temperature of the strip.
During pickled steel strip, uncoiler 1 by strip uncoiling, strip after uncoiling under the guidance of transmission device 6 into
Enter in heating tank 31, at this point, the hot water in steam and heating tank 31 that steam injection equipment 32 sprays is mixed to form steam-water mixing
Object washes away and strip is heated to 80 to 90 DEG C, and the strip, which enters, later carries out pickling in acid dip pickle 5, described after heating
Strip and acid solution do not have the temperature difference, will not take away the heat of acid solution, and heating medium used in strip is steam, steam and heating tank
In heat transfer water efficiency it is higher, up to 98% or more, high temperature steam water interface is formed by by heating device 3 and washes away and heats
Strip can save 50% or more quantity of steam, while can substantially reduce the usage amount and workload of graphite heat exchanger；This
Utility model greatly reduces the usage amount and steam consumption of graphite heat exchanger in acid dip pickle, optimizes the capacity of steam boiler
With the arrangement of pickling pipeline, reduce operating cost.
Optionally embodiment, as shown in Fig. 2, transmission device 6 include guide roller, the input end of heating tank 31 and go out
Mouth end is provided with the guide roller, and strip enters under the guidance of the guide roller from the input end, by heating tank 31
Hot water and steam injection equipment 32 spray steam heating after, be sent to acid dip pickle 5 from the outlet end, make the biography of strip
Heat is more rapidly.
Optionally embodiment, as shown in Fig. 2, the hot water of heating tank 31 is arranged in steam injection equipment 32
It is interior, be conducive to the formation of high temperature steam water interface, the steam water interface of injection generates higher turbulent flow, can rapidly add strip
Heat is to suitable temperature, while floating rust, greasy dirt, impurity and oxide of belt steel surface etc. can be cleared up effectively, saves
Acid solution dosage when subsequent pickling, the blocking of pipeline and valve caused by avoiding because of impurity keep equipment operation more permanent；
Preferably, hot water temperature is 95~100 DEG C, and hot water depth is 50cm.
Optionally embodiment, as shown in Fig. 2, the quantity of steam injection equipment 32 is two, and two steam sprays
Injection device 32 is oppositely arranged on the two sides up and down of strip in the hot water, strip when can be completely covered by heating device 3,
Further increase heat transfer efficiency and cleaning effect.
Optionally embodiment, as shown in Fig. 2, steam injection equipment 32 includes that steam sprays beam 321, steam sprays beam
Flow control valve is provided on 321, the flow control valve can change the heating temperature of strip by changing steam flow；It steams
Vapour sprays beam 321 under the action of the flow control valve, and the vapor (steam) temperature of ejection is between 120 DEG C~180 DEG C, it is preferable that
Vapor (steam) temperature is 150 DEG C, and the hot water in 150 DEG C of steam and heating tank 31 is mixed to form the steam water interface of injection, by strip
Temperature be heated between 75 DEG C~90 DEG C, the temperature when strip after guaranteeing heating enters acid dip pickle 5 controls on 80 DEG C of left sides
The right side makes the acid liquor temperature of acid dip pickle 5 be maintained at optimum temperature, thus speed when effectively improving pickling.
As optional embodiment, as shown in Fig. 2, being provided with the steam of quantity at least two on steam spray beam 321
Nozzle 322, all steam jets 322 are evenly distributed on steam spray beam 321, and are arranged with steam spray beam 321 in herringbone, people
The spot of belt steel surface, impurity and oxide etc. can be washed into the heating of strip two sides by the steam jet 322 of font setting
In slot 31.
Optionally embodiment, as shown in Fig. 2, heating device 3 further includes water inlet line 33 and drainage pipeline 34, into
Waterpipe 33 and drainage pipeline 34 are connected with heating tank 31, and water inlet control valve, drainage pipeline 34 are provided on water inlet line 33
On be provided with draining control valve, the water inlet control valve and draining control valve mutual cooperation can control described in heating tank 31
The capacity of hot water.
As optional embodiment, as shown in Figure 1, drying device 4 is provided between heating device 3 and acid dip pickle 5,
Drying device 4 is used to dry the liquid of the belt steel surface, prevents the liquid of the belt steel surface from entering 5 dilute acid of acid dip pickle
Liquid influences pickling quality.
Optionally embodiment, as depicted in figs. 1 and 2, drying device 4 include squeeze roller, and the squeeze roller includes
Upper squeeze roller and lower squeeze roller, heated device 3 heat after strip, pass through squeezing for the upper squeeze roller and the lower squeeze roller
Pressure, can effectively remove the moisture of belt steel surface, prevent the belt steel surface moisture influence acid dip pickle 5 in acid solution it is dense
Degree creates favorable conditions for pickling operation；Preferably, the both ends of the lower squeeze roller are provided with buffer unit, extract under described
Work extruding force when roller can provide drying operation with the upper squeeze roller under the action of buffer unit for the strip,
It is further preferred that the buffer unit is set as buffering hydraulic cylinder or bounce cylinder.
Optionally embodiment, as shown in Figure 1, transmission device 6 includes guide roller, on the strip pickling production line
The guide roller is provided between two adjacent devices；The guide roller is raw for the strip pickling for transporting strip
The formation of producing line provides precondition.
Optionally embodiment, as shown in Figure 1, the strip pickling production line further includes straightener 2, straightener 2
It is arranged between uncoiler 1 and heating device 3, straightener 2 breaks phosphorus for the machinery of strip and improves plate shape, and strip is by aligning
After machine 2, the surface of the strip can generate and attachment portion oxide, and steam sprays boom device 32 to a certain extent can be effective
Wash away this partial oxide, after reduction in acid dip pickle 5 acid solution consumption, it is preferable that straightener 2 be five-roll machine.
Optionally embodiment, as shown in Figure 1, the acid dip pickle 5 includes descaling bath, setting in the descaling bath
There is acid solution；The acid solution is used for the pickling of strip；When strip after heating enters the descaling bath, the strip is not deposited with acid solution
In the temperature difference, the usage amount of graphite heat exchanger is significantly reduced, acid dip pickle is optimized, reduced use cost, avoid simultaneously
Environment bring security risk is given because directly heating acid mist caused by acid solution；Preferably, the quantity of the descaling bath is three,
Keep pickling effect more significant.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replacement, it should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should be with the power
Subject to the protection scope that benefit requires.
Claims (10)
1. a kind of strip pickling production line, which is characterized in that including uncoiler (1), transmission device (6), heating device (3) and acid
Cleaning device (5), the heating device (3) include heating tank (31), are contained with hot water in the heating tank (31), in which:
Strip after the uncoiler (1) uncoiling can by the transmission device (6) be sequentially delivered to the heating tank (31) and
The acid dip pickle (5)；It is provided with steam injection equipment (32) in the heating tank (31), steam injection equipment (32) spray
The steam penetrated can form steam water interface with the hot water in the heating tank (31) and wash away the strip to improve the strip
Temperature.
2. strip pickling production line according to claim 1, which is characterized in that the transmission device (6) includes guide roller,
It is provided with the guide roller in the heating tank (31), strip can be from the heating tank (31) under the guidance of the guide roller
Pass through in hot water.
3. strip pickling production line according to claim 2, which is characterized in that steam injection equipment (32) setting exists
In the hot water.
4. strip pickling production line according to claim 3, which is characterized in that the quantity of the steam injection equipment (32)
The two sides up and down of strip in the hot water are oppositely arranged on for two and two steam injection equipments (32).
5. strip pickling production line described in any one of -4 according to claim 1, which is characterized in that the steam injection equipment
(32) include steam spray beam (321), be provided with flow control valve on steam spray beam (321), the flow control valve can lead to
Cross the heating temperature for changing steam flow to change strip.
6. strip pickling production line according to claim 1, which is characterized in that the heating device (3) and the pickling
It is provided between device (5) drying device (4), the drying device (4) is used to dry the liquid of the belt steel surface.
7. strip pickling production line according to claim 6, which is characterized in that the drying device (4) includes squeeze roller.
8. strip pickling production line according to claim 2, which is characterized in that adjacent on the strip pickling production line
The guide roller is provided between two devices.
9. strip pickling production line according to claim 1, which is characterized in that the strip pickling production line further includes rectifying
Straight machine (2), the straightener (2) are arranged between the uncoiler (1) and the heating device (3).
10. strip pickling production line according to claim 1, which is characterized in that the acid dip pickle (5) includes pickling
Slot is provided with acid solution in the descaling bath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962934.3U CN209113998U (en) | 2018-11-27 | 2018-11-27 | A kind of strip pickling production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821962934.3U CN209113998U (en) | 2018-11-27 | 2018-11-27 | A kind of strip pickling production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209113998U true CN209113998U (en) | 2019-07-16 |
Family
ID=67206620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821962934.3U Active CN209113998U (en) | 2018-11-27 | 2018-11-27 | A kind of strip pickling production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209113998U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112708899A (en) * | 2020-12-09 | 2021-04-27 | 广东前力环保科技有限公司 | Stainless steel strip steel pickling production line |
| CN113136584A (en) * | 2021-04-01 | 2021-07-20 | 本钢板材股份有限公司 | Cold-rolled strip steel pickling production line |
-
2018
- 2018-11-27 CN CN201821962934.3U patent/CN209113998U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112708899A (en) * | 2020-12-09 | 2021-04-27 | 广东前力环保科技有限公司 | Stainless steel strip steel pickling production line |
| CN112708899B (en) * | 2020-12-09 | 2023-05-02 | 唐山市晟鑫冷轧薄板有限公司 | Stainless steel strip acid cleaning production line |
| CN113136584A (en) * | 2021-04-01 | 2021-07-20 | 本钢板材股份有限公司 | Cold-rolled strip steel pickling production line |
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