CN107755437A - A kind of throwing stream purging system and cleaning method for Cold-strip Steel Surface cleaning - Google Patents

A kind of throwing stream purging system and cleaning method for Cold-strip Steel Surface cleaning Download PDF

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Publication number
CN107755437A
CN107755437A CN201610694437.9A CN201610694437A CN107755437A CN 107755437 A CN107755437 A CN 107755437A CN 201610694437 A CN201610694437 A CN 201610694437A CN 107755437 A CN107755437 A CN 107755437A
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China
Prior art keywords
strip
casting device
cleaning
centrifugation
steel surface
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Granted
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CN201610694437.9A
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Chinese (zh)
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CN107755437B (en
Inventor
王凯
李山青
熊斐
瞿培磊
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to CN201610694437.9A priority Critical patent/CN107755437B/en
Publication of CN107755437A publication Critical patent/CN107755437A/en
Application granted granted Critical
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269Cleaning
    • B21B45/0275Cleaning devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269Cleaning
    • B21B45/0272Cleaning compositions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0269Cleaning
    • B21B45/0275Cleaning devices
    • B21B45/0287Cleaning devices removing solid particles, e.g. dust, rust

Abstract

The invention discloses a kind of throwing stream purging system and cleaning method for Cold-strip Steel Surface cleaning, including multigroup cleaning unit on strip, cleaning unit includes centrifugation casting device and blowing mechanism, centrifugation casting device is dislocation arrangement above and below strip, and the centrifugation casting device above strip and the symmetrical setting of centrifugation casting device below strip, blowing mechanism is also above and below strip, centrifuging casting device includes casting head, rotary shaft, feed tube and centrifuge blade, headgear is cast in rotary shaft, make projectile head around rotation axis angular rate rotation, centrifuge blade has several pieces, uniform intervals are on the outside for casting head, several pieces centrifuge blades are made to form toroidal, feed tube is in rotary shaft, blowing mechanism includes compressed air hose and several shower nozzles on compressed air hose.The present invention can realize the complete cleaning to the strip two sides before coating after cold rolling, and simplify the technological process in existing strip cleaning technology.

Description

A kind of throwing stream purging system and cleaning method for Cold-strip Steel Surface cleaning
Technical field
The present invention relates to Cold-strip Steel Surface cleaning technique, and it is clear to be used for Cold-strip Steel Surface more specifically to one kind The throwing stream purging system and cleaning method washed.
Background technology
With the development of steel and iron industry, requirement more and more higher of the market to coating sheet material, such as Automobile Plate, appliance plate, not only Have good deep drawing quality, coating, corrosion resistance, also to there is good coating outward appearance and coating binding force, this just to coating before The clean-up performance of belt steel surface proposes higher requirement.And belt steel surface is with many ROLLING OILs, machine oil, iron after cold rolling The dirt such as powder and dust, the solid particle in these dirts can cause the annealing furnace roller dross before coating, and then in strip table Face produces impression and scuffing, influences strip surface quality, in addition, failing the grease vapored away completely, will also become after annealing residual Carbide is stayed, both damages outward appearance, causes coating adhesion poor again, influences the competitiveness of coating product, it is therefore, necessary before coating Cold-strip Steel Surface is cleaned.
Matting can remove belt steel surface in foul caused by cold rolling or storage before coating, generally adopt in the prior art Cleaning method is the processes such as alkali cleaning, scrub, electrolytic cleaned, hot water scrub, rinsing, drying, and its mechanism cleaned is to utilize The method of dipping by lye or spray generates water-soluble soap and glycerine with ROLLING OIL reaction, and using the mode being electrolysed in band Steel surface separates out hydrogen and oxygen bubbles, destroys oil film and takes away grease.
Prior art cleaning method complex technical process, device is long and big, and investment construction is costly, brush of the prior art Roller causes brush roll significantly to wear with belt steel surface Mechanical Contact, changes brush roll according to the most every three months of the method for operation, this production Raw sizable cost, and brush roll produces cut in belt steel surface sometimes during scrub, causes strip surface quality to lack Fall into, prior art uses electrolytic cleaned, and current density is very big, consumes a large amount of electric energy, and prior art is rinsed using multistage hot water, disappeared Consume great lot of water resources.
Based on this, to solve the problems, such as that conventional method is brought, substantial amounts of research is being have passed through, multiple technologies is being have developed and sets It is standby, to substitute traditional cleaning method.As disclosed one kind in United States Patent (USP) US6547886B1 using electrolytic cleaned and high injection The strip cleaning method and device of cleaning is flowed, the strip cleaning method instead of scrub using high-pressure jet cleaning, avoid band Surface quality defect after steel cleaning, but device is still more complicated, and electrolytic cleaned needs to consume larger electric energy, and high-pressure jet cleans Fluid pressure easily loses in device, and energy resource consumption is higher.One kind is and for example disclosed in European patent EP 0870854A1 and uses high pressure Jet flow cleaning and the strip cleaning method and device of ultrasonic wave cleaning, the cleaning method instead of in traditional strip cleaning method Electrolytic cleaned is with scrubbing, and cleaning performance is preferable, but ultrasonic cleaning equipment structure is more complicated, and equipment investment is larger, newest height Jet flow cleaning technique provides high pressure using high-pressure pump, and high-pressure pump, nozzle are fragile, has a strong impact on cleaning performance and unit production Energy.
The content of the invention
For drawbacks described above present in prior art, it is clear to be used for Cold-strip Steel Surface it is an object of the invention to provide one kind The throwing stream purging system and cleaning method washed, the complete cleaning to the strip two sides before coating after cold rolling, Er Qiejian can be realized Change the technological process in existing strip cleaning technology.
To achieve the above object, the present invention adopts the following technical scheme that:
On the one hand, a kind of throwing stream purging system for Cold-strip Steel Surface cleaning, including it is multigroup clear on strip Unit is washed, every group of cleaning unit includes centrifugation casting device and blowing mechanism, and blowing mechanism is after centrifugation casting device End, centrifugation casting device is dislocation arrangement above and below strip, and centrifugation casting device and strip above strip The symmetrical setting of centrifugation casting device of lower section, also above and below strip, centrifugation casting device includes blowing mechanism Head, rotary shaft, feed tube and centrifuge blade are cast, casts headgear in rotary shaft, makes projectile head around rotation axis angular rate rotation Turn, centrifuge blade has several pieces, and uniform intervals make several pieces centrifuge blades form toroidal, feed liquor on the outside for casting head Pipe is in rotary shaft, and cleaning fluid is directed into centrifugation casting device, blowing mechanism includes compressed air hose and is located at Several shower nozzles on compressed air hose.
The exradius of described centrifuge blade is more than the maximum outside diameter of feed tube.
Described angular speed is 1200r/min~2400r/min.
Described centrifuge blade is 4~16.
Surface above and below described rotary shaft and strip is set in 0~60 ° of angle.
Described centrifugation casting device is set along strip width direction transverse shifting.
Described cleaning fluid is the deionized water of heat, the alkali lye of heat or the liquid containing additive.
Described hot deionized water is 50~90 DEG C, and pH value is 6.5~9, and described alkali liquid temperature is 50~90 DEG C, dense It is sodium metasilicate, surfactant or sodium phosphate to spend for 0~30g/L, described additive.
On the other hand, a kind of throwing stream cleaning method for Cold-strip Steel Surface cleaning, comprises the following steps:
S1. multigroup cleaning unit is set in strip traffic direction, centrifugation casting device is dislocation arrangement located at strip Above and below, and the centrifugation casting device above strip and the symmetrical setting of centrifugation casting device below strip, it will purge Mechanism is located at the rear end of centrifugation casting device, also above and below strip;
S2. blowing mechanism is connected into compressed air source, and after starting blowing mechanism, centrifugation casting device is also rotated, By cleaning fluid by feed tube be directed into centrifugation casting device in, make cleaning fluid with centrifugation casting device rotate, produce from Mental and physical efforts;
S3. under the influence of centrifugal force, cleaning fluid is made outwards to be flown out along centrifuge blade, it is clear so as to be carried out to belt steel surface Wash;
S4. after cleaned strip is run to blowing mechanism, blowing mechanism purges to belt steel surface, removes strip The cleaning fluid or residue on surface.
In described S2, the direction of rotation of the two neighboring centrifugation casting device of strip homonymy is opposite.
In above-mentioned technical scheme, beneficial effects of the present invention are as follows, and the purging system is using the method for casting liquid stream Belt steel surface is cleaned, the complete cleaning to the strip two sides before coating after cold rolling can be realized, and simplify existing Technological process in strip cleaning technology, energy resource consumption is reduced, reduce disposal of pollutants, realize energy-conserving and environment-protective, can also substituted existing Strip cleaning section unit before coating after some cold rollings, to meet the requirement of coating unit great surface quality, it is original not influence producing line Production capacity.
Brief description of the drawings
Fig. 1 is the structure top view of the present invention;
Fig. 2 is Fig. 1 lower view;
Fig. 3 is Fig. 2 right view;
Fig. 4 is the schematic diagram of the embodiment of the present invention one;
Fig. 5 is Fig. 4 top view;
The schematic diagram of Fig. 6 embodiment of the present invention two;
Fig. 7 is Fig. 6 top view.
Embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
Incorporated by reference to shown in Fig. 1 to Fig. 3, a kind of throwing stream for Cold-strip Steel Surface cleaning provided by the present invention cleans system System, including multigroup cleaning unit 100 on strip 1, every group of cleaning unit 100 include centrifugation casting device 2a, 2b, 2c, 2d and blowing mechanism, blowing mechanism located at centrifugation casting device 2a, 2b, 2c, 2d rear end, centrifugation casting device 2a, 2b, 2c, 2d is dislocation arrangement above and below strip 1, and below centrifugation casting device 2a, 2b and strip 1 of the top of strip 1 The symmetrical setting of casting device 2c, 2d is centrifuged, the purpose is to ensure linear velocity, the jet distribution on cleaning fluid impact strip 1 surface State etc. is all completely the same, so that it is guaranteed that under strip 1, the cleaning quality of lower surface it is just the same.In actual cleaning process, band 1 upper and lower surface of steel needs equal cleaning quality, it is therefore desirable to is realized with centrifugation casting device 2a, 2b, 2c, 2d of model clear Washing lotion is cast, moreover, centrifugation casting device 2a, 2b, 2c, 2d with model are easy to follow-up equipment control to be changed with maintenance.Blow Mechanism is swept also above and below strip 1, blowing mechanism is located at centrifugation casting device 2a, 2b, 2c, 2d rear end, centrifugation Casting device 2a, 2b, 2c, 2d include casting first 201, rotary shaft 202, feed tube 203 and centrifuge blade 204, cast first 201 It is set in rotary shaft 202, enables projectile first 201 that there is number around the center axis thereof of rotary shaft 202, centrifuge blade 204 Piece, uniform intervals make several pieces centrifuge blades 204 form toroidal, feed tube 203 is located at rotation located at casting on first 201 outside In rotating shaft 202, cleaning fluid is directed into centrifugation casting device 2a, 2b, 2c, 2d, such feed tube 203, first 201 are cast High speed rotation, while feed tube 203 can be carried out with same angle around the central axis of rotary shaft 202 with centrifuge blade 204 Also a superhigh speed rotates interior cleaning fluid therewith, it is produced certain centrifugal force, promotes it to be flowed to according to predetermined passage At a high speed on the centrifuge blade 204 of rotation, under the influence of centrifugal force, cleaning fluid departs from centrifugation under the rotation of centrifuge blade 204 The surface of blade 204, and outwards flown out to the surface of strip 1 along the cylindrical tangential direction of centrifuge blade 204, realize cleaning fluid The process for accelerating, casting and cleaning, blowing mechanism include compressed air hose 3 and several shower nozzles 4 on compressed air hose 3, Strip 1 is after centrifugation casting device 2a, 2b, 2c, 2d cleaning, and reruning, (direction of arrow is in Fig. 1 to blowing mechanism position Strip traffic direction), compressed air hose 3 connects compressed air source, and the surface of strip 1 is purged again using several shower nozzles 4, made The cleaning fluid and residue on the surface of strip 1 quickly remove totally, realize drying, the cleaning on the surface of strip 1, clear so as to complete whole road Wash process.
Preferably, the exradius of described centrifuge blade 204 is more than the maximum outside diameter of feed tube 203, cleaning fluid passes through Feed tube 203 is delivered in the state of certain pressure and flow velocity in centrifugation casting device 2a, 2b, 2c, 2d, and rotary shaft 202 exists Fixed angular speed rotation is produced in the presence of external drive source, at the same drive be connected thereto the centrifuge blade 204 in face together with Rotated with angular speed, make the angular speed of centrifuge blade 204 identical with the angular speed of rotary shaft 202, under the effect of this angular speed, make centrifugation Cleaning fluid in casting device 2a, 2b, 2c, 2d produces certain centrifugal force, promotes it to be flowed at a high speed according to predetermined passage On the centrifuge blade 204 of rotation, and centrifuge blade 204 is because its exradius is more significantly larger than the maximum outside diameter of feed tube 203, therefore , in the case where same constant angular velocity acts on, linear speed significantly increases for it, so realizes acceleration to cleaning fluid, at the same from Under mental power function, cleaning fluid departs from the surface of centrifuge blade 204 under the acceleration of centrifuge blade 204, and along centrifuge blade 204 cylindrical tangential directions outwards fly out to the surface of strip 1.
Preferably, described angular speed is generally in the range of 1200r/min~2400r/min.
Preferably, described centrifuge blade 204 is 4~16, the company of drive in the presence of external drive source of rotary shaft 202 Centrifuge blade 204 thereon is rotated with same angular speed together.
Preferably, described rotary shaft 202 is set with the surface above and below strip 1 in 0~60 ° of angle, it is easy to clear Washing lotion jet directly impacts operating strip 1, and impact dynamics is bigger, it is easier to by the iron powder on the surface of strip 1, ROLLING OIL etc. Wash down, cleaning performance is more preferable.
Preferably, described centrifugation casting device 2a, 2b, 2c, 2d is set along the width transverse shifting of strip 1, ensure The cleaning performance of the upper and lower surface edge of strip 1.
Preferably, described cleaning fluid is the deionized water of heat, the alkali lye of heat or the liquid containing additive, described heat Deionized water be 50~90 DEG C, pH value is 6.5~9, and described alkali liquid temperature is 50~90 DEG C, and concentration is 0~30g/L, institute The additive stated is sodium metasilicate, surfactant or sodium phosphate etc..
Using a kind of throwing stream cleaning method for Cold-strip Steel Surface cleaning provided by the present invention, including following step Suddenly:
S1. in the multigroup cleaning unit 100 of upper setting of the traffic direction of strip 1, because the cleansing power of single cleaning unit has Limit, during actual production, to meet the cleaning requirement on the surface of unit strip 1, can be gone here and there multiple cleaning units 100 Connection, to improve cleansing power and unit speed.Each centrifugation casting device 2a, 2b, 2c, 2d is in dislocation in the upper and lower of strip 1 Distribution, be specifically dislocatedly distributed for:Centrifuge casting device 2a and centrifuge casting device 2b in the dislocation point of the upper width direction of strip 1 Cloth, centrifugation casting device 2c and centrifugation casting device 2d are dislocatedly distributed in the lower width direction of strip 1, and each centrifugation casts dress The jet for putting 2a, 2b, 2c, 2d all forms a mapping distributed areas respectively, and among these, centrifugation casting device 2a and centrifugation are cast There is a coincidence length mapping distributed areas between device 2b, and centrifugation casting device 2c and centrifugation casting device 2d L1, overlapping length L1 can ensure that the middle part of strip 1 obtains good cleaning performance, overlap length L1 scope in 100~400mm Left and right, in addition, centrifugation casting device 2a and centrifugation casting device 2c, is symmetrical set in the upper and lower of strip 1, same centrifugation Casting device 2b and centrifugation casting device 2d, is also symmetrical set, it is ensured that 1 upper and lower table of strip in the upper and lower of strip 1 Face obtains same cleaning quality, and the upper and lower surface uniform force of strip 1, avoids the vibration of strip 1.Centrifuge casting device Quantity is traditionally arranged to be even number, and the centrifugation casting device quantity of the upper and lower of strip 1 should be equal.And centrifugation casting device 2a, 2b, 2c, 2d can also move along the width of strip 1, to ensure the cleaning quality of the edge of strip 1.
S2. blowing mechanism is connected into compressed air source, and starts centrifugation casting device 2a, 2b, 2c, 2d and also rotated, Two centrifugation casting devices 2a, 2b of the top of strip 1 direction of rotation on the contrary, as angular speed W1 and W2 absolute value is equal, On the contrary, as angular speed W3 and W4 absolute value is equal, the purpose is to true for same centrifugation casting device 2c, 2d direction of rotation It is all completely the same to protect linear velocity, the jet distribution on cleaning fluid impact strip 1 surface etc., so that it is guaranteed that 1 upper and lower surface of strip Cleaning quality it is just the same, cleaning fluid is directed into centrifugation casting device 2a, 2b, 2c, 2d by feed tube 203, made clear Washing lotion rotates with centrifugation casting device 2a, 2b, 2c, 2d, produces centrifugal force.
S3. under the influence of centrifugal force, cleaning fluid is cylindrical along centrifuge blade 204 under the acceleration of centrifuge blade 204 Tangential direction outwards flies out, and the overall process for accelerating, casting of cleaning fluid is realized, so as to be cleaned to the surface of strip 1.
S4. cleaned strip 1 is run to blowing mechanism, and the shower nozzle 4 of blowing mechanism enters to the cleaned surface of strip 1 Row purging, remove the cleaning fluid or residue on the surface of strip 1.
Incorporated by reference to the implementation one shown in Fig. 4 and Fig. 5, specific distribution during wide specification strip steel 1 is cleaned for the present invention.Strip 1 Need cleaning section to be made up of two cleaning units 100a, 100b, be arranged in the leading portion and back segment of the traffic direction of strip 1, Two cleaning units 100a, 100b centrifugation casting device are identical with blowing mechanism arrangement form, are all cast comprising six centrifugations Device, three are respectively arranged in the upper and lower of strip 1, centrifugation casting device is arranged symmetrically in the upper and lower of strip 1, wherein, arrangement Three centrifugation casting devices above or below strip 1 are arranged in two edge and the middle part of the width of strip 1, and Centrifugation casting device in two edge can adjust in the width direction according to the width specifications of strip 1, to ensure the whole width of strip 1 Cleaning performance.
The rotary shaft 202 of all centrifugation casting devices is provided parallel to state, as centrifugal with 1 upper and lower surface of strip The rotary shaft 202 of injection device and the centerline parallel of the traffic direction of strip 1.
The cleaning fluid that the cleaning unit 100a being arranged on the traffic direction back segment of strip 1 is used is 75 DEG C of temperature, concentration 20g/L NaOH solution, centrifuge blade are provided with 12, and the rotating speed for centrifuging casting device is 1500r/min.
The cleaning fluid that the cleaning unit 100b being arranged on the traffic direction leading portion of strip 1 is used is the deionization of 75 DEG C of temperature Water, centrifuge blade are provided with 12, and the rotating speed for centrifuging casting device is 1500r/min.
Strip 1 crimps after cold rolling mill, needs to be cleaned before then entering back into coating unit, now coil of strip exists The continuous treatment welded end to end is realized in the presence of producing line preposition equipment, i.e., strip 1 is before cleaning unit 100a is entered It is changed into the serialization strip (metal foil) of an indefinite length, its temperature is not higher than 100 DEG C, the unit tension force before and after producing line Run under effect along roller-way to cleaning unit 100a, now 75 DEG C of temperature, concentration 20g/L NaOH solution is through feed tube 203 enter centrifugation casting device, and the centrifuge blade 204 installed in centrifugation casting device accelerates NaOH solution, in centrifugal force The lower NaOH solution high-speed projectile of effect casts liquid stream and enters the hard composition granule such as the iron powder on the surface of strip 1, dust to the surface of strip 1 Row is released, peeled off, while the grease reaction generation soap such as the ROLLING OIL on NaOH solution and the surface of strip 1 and glycerine, soap and sweet Oil is removed in the case where casting the impact of liquid stream from the surface of strip 1;Then strip 1 is being pressed by cleaning unit 100a blowing mechanism Under the purging of contracting air, the liquid on the surface of strip 1 is clean by purging.
Strip 1 immediately enters cleaning unit 100b, now the deionized water of 75 DEG C of temperature after cleaning unit 100a comes out Entering centrifugation casting device through feed tube 203, the centrifuge blade 204 installed in centrifugation casting device accelerates deionized water, Deionized water high-speed projectile is to the surface of strip 1 in the presence of centrifugal force, cast current by the alkali lye of the surface residual of strip 1, soap, Glycerine etc. is removed;Then strip 1 is by cleaning unit 100b blowing mechanism, and under the purging of compressed air, the surface of strip 1 is residual The water mark stayed quickly removes, and realizes drying, the cleaning on the surface of strip 1, completes the matting of strip.
So just realize the cleaning to the surface of cold-strip steel 1 so that the surface of strip 1 is clean, cleaning, to ensure its entrance The treatment effect of next process section is not influenceed during next process section, such as annealing, coating.
Incorporated by reference to the implementation two shown in Fig. 6 and Fig. 7, specific distribution during narrow specification strip steel 1 is cleaned for the present invention.Strip 1 Cleaning section is needed to be made up of two cleaning units 100c, 100d, two cleaning unit 100c, 100d centrifugation casting device arrangement shapes Formula is identical, and each cleaning unit 100c, 100d include four centrifugation casting devices, and the upper and lower of strip 1 respectively arranges 2, centrifugal Injection device is arranged symmetrically in the upper and lower of strip 1.Be arranged in cleaning unit 100c, 100d two above or below strip 1 from Heart casting device is arranged in two edge of the width of strip 1, and all centrifugation casting devices can be according to the width of strip 1 Metric lattice adjust along the width of strip 1, to ensure the cleaning performance of whole strip 1.
The rotary shaft 202 and the plane on 1 upper and lower surface of strip of all centrifugation casting devices in cleaning unit 100c, 100d Angle is 15 °, and the mapping curve and band of the plane where 1 upper and lower surface of strip of rotary shaft 202 of all centrifugation casting devices The speed of service direction centerline axis parallel of steel 1.
Cleaning fluid is 75 DEG C of temperature in cleaning unit 100c, adds the deionized water of surfactant, centrifuges casting device On centrifuge blade 204 be provided with 15, centrifugation casting device rotating speed is 1500r/min.
Cleaning fluid is the deionized water of 80 DEG C of temperature in cleaning unit 100d, centrifuges the centrifuge blade 204 on casting device 15 are provided with, centrifugation casting device rotating speed is 1500r/min.
Strip 1 crimps after cold rolling mill, needs to be cleaned before then entering back into coating unit, strip 1 is producing Run before and after line in the presence of unit tension force along roller-way to cleaning unit 100c, now 75 DEG C of addition surfactants of temperature Deionized water solution enter centrifugation casting device through feed tube 203, the centrifuge blade 204 installed in centrifugation casting device will be clear Washing lotion accelerates, and under the influence of centrifugal force by cleaning fluid high-speed projectile to the surface of strip 1, casts liquid stream by the iron on the surface of strip 1 The hard composition granule such as powder, dust is released, peeled off, while the ROLLING OIL on the surfactant in cleaning fluid and the surface of strip 1 etc. Grease combines, and is removed under the washing away of high-speed projectile liquid stream from the surface of strip 1, then the blowing by cleaning unit 100c of strip 1 Mechanism is swept, under the purging of compressed air, the liquid on the surface of strip 1 is clean by purging.
Strip 1 immediately enters cleaning unit 100d, now the deionized water of 80 DEG C of temperature after cleaning unit 100c comes out Entering centrifugation casting device through feed tube 203, the centrifuge blade 204 installed in centrifugation casting device accelerates deionized water, Deionized water high-speed projectile casts current the cleaning fluid of the surface residual of strip 1 is clear to the surface of strip 1 in the presence of centrifugal force Remove;Then strip 1 passes through cleaning unit 100d blowing mechanism, under the purging of compressed air, the water mark of the remained on surface of strip 1 It is quick to remove, drying, the cleaning on the surface of strip 1 are realized, completes the matting of strip.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention, And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above Change, modification will all fall in the range of claims of the present invention.

Claims (14)

1. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning, it is characterised in that including multigroup on strip Cleaning unit, every group of cleaning unit include centrifugation casting device and blowing mechanism, and blowing mechanism is located at centrifugation casting device Rear end, centrifugation casting device is dislocation arrangement above and below strip, and centrifugation casting device and band above strip The symmetrical setting of centrifugation casting device below steel, blowing mechanism also above and below strip, centrifuge casting device bag Include and cast head, rotary shaft, feed tube and centrifuge blade, cast headgear in rotary shaft, make projectile head around rotation axis angular rate Rotation, centrifuge blade have several pieces, and uniform intervals make several pieces centrifuge blades form toroidal, entered on the outside for casting head Liquid pipe is in rotary shaft, and cleaning fluid is directed into centrifugation casting device, blowing mechanism includes compressed air hose and set In several shower nozzles on compressed air hose.
2. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 1, it is characterised in that described Centrifuge blade exradius be more than feed tube maximum outside diameter.
3. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 1, it is characterised in that described Angular speed be 1200r/min~2400r/min.
4. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 1, it is characterised in that described Centrifuge blade be 4~16.
5. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 1, it is characterised in that described Rotary shaft and strip above and below surface set in 0~60 ° of angle.
6. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 1, it is characterised in that described Centrifugation casting device along strip width direction transverse shifting set.
7. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 1, it is characterised in that described Cleaning fluid be the deionized water of heat, the alkali lye of heat or liquid containing additive.
8. a kind of throwing stream purging system for Cold-strip Steel Surface cleaning as claimed in claim 7, it is characterised in that described Hot deionized water be 50~90 DEG C, pH value be 6.5~9, described alkali liquid temperature be 50~90 DEG C, concentration is 0~30g/ L, described additive are sodium metasilicate, surfactant or sodium phosphate.
9. a kind of throwing stream cleaning method for Cold-strip Steel Surface cleaning, it is characterised in that comprise the following steps:
S1. multigroup cleaning unit is set in strip traffic direction, centrifugation casting device is dislocation arrangement located at the top of strip And lower section, and the centrifugation casting device above strip and the symmetrical setting of centrifugation casting device below strip, by blowing mechanism Located at the rear end of centrifugation casting device, also above and below strip;
S2. blowing mechanism is connected into compressed air source, and after starting blowing mechanism, centrifugation casting device is also rotated, will be clear Washing lotion is directed into centrifugation casting device by feed tube, cleaning fluid is rotated with centrifugation casting device, is produced centrifugal force;
S3. under the influence of centrifugal force, cleaning fluid is made outwards to be flown out along centrifuge blade, so as to be cleaned to belt steel surface;
S4. after cleaned strip is run to blowing mechanism, blowing mechanism purges to belt steel surface, removes belt steel surface Cleaning fluid or residue.
A kind of 10. throwing stream cleaning method for Cold-strip Steel Surface cleaning as claimed in claim 9, it is characterised in that institute In the S2 stated, the direction of rotation of the two neighboring centrifugation casting device of strip homonymy is opposite.
CN201610694437.9A 2016-08-19 2016-08-19 A kind of throwing stream cleaning system and cleaning method for Cold-strip Steel Surface cleaning Active CN107755437B (en)

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Cited By (1)

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