CN211538998U - Strip steel surface acid-free descaling system - Google Patents
Strip steel surface acid-free descaling system Download PDFInfo
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- CN211538998U CN211538998U CN201922186695.8U CN201922186695U CN211538998U CN 211538998 U CN211538998 U CN 211538998U CN 201922186695 U CN201922186695 U CN 201922186695U CN 211538998 U CN211538998 U CN 211538998U
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Abstract
The utility model relates to a belted steel surface does not have acid descaling system belongs to metal surface treatment technical field. The device comprises an uncoiler, a crop/tail shear, a scale breaker, a welding machine, a tension roller, a conveying roller way, a loop, a vertical acid-free descaling device, a surface water film cleaning device, a slitting shear and a coiling machine which are sequentially arranged along the advancing direction of the strip steel, wherein another conveying roller way and a tension roller are sequentially arranged between the surface water film cleaning device and the slitting shear along the advancing direction of the strip steel; the conveying roller way comprises a horizontal and vertical torsion mechanism so as to enable the strip steel to be converted between a horizontal conveying state and a vertical conveying state; the vertical acid-free descaling device comprises a descaling box and wet type impeller heads symmetrically arranged on the descaling box relative to the strip steel, and for the strip steel with different width specifications, a certain included angle is formed between the rotation axis of the wet type impeller head and the advancing direction of the strip steel. The system ensures that the abrasive is not easy to accumulate on the surface of the strip steel, and avoids the excessive abrasive from striking outside the width range of the strip steel.
Description
Technical Field
The utility model belongs to the technical field of metal surface treatment, a strip steel surface does not have acid descaling system is related to.
Background
During hot rolling or heat treatment of metal materials, a layer of dense covering consisting of metal oxides, commonly called "scale", is formed on the surface of the metal materials, and the existence of the scale adversely affects the further processing of the metal and needs to be removed. In recent years, an acid-free descaling process is concerned and rapidly developed and applied, wherein wet shot blasting descaling has the advantages of environmental protection, high efficiency and the like, and becomes a research hotspot.
The wet shot blasting and descaling usually adopt a horizontal layout, namely, the strip steel horizontally advances, and the shot blasting devices are arranged on the two sides of the upper surface and the lower surface of the strip steel, so that the following problems exist: (1) abrasive materials are easily accumulated on the upper surface of the strip steel, and need to be removed before the next impeller strikes the strip steel or is discharged from a descaling box, and if the removal is not timely or thorough, the descaling effect is seriously influenced; (2) the cleaning of the abrasive material usually adopts a roller brush and/or water spraying, the system is complex, the water consumption is large, and the investment and the operation cost are increased; (3) the abrasive particles are small, so that the abrasive particles are strong in adhesion under the condition of water, and are easy to adhere to a conveying roller, and the surface of the strip steel is easy to press or scratch when the strip steel travels, so that the surface quality is reduced; (4) the impeller heads need to be arranged up and down, the impeller heads below the strip steel project grinding materials upwards, the projecting speed is reduced under the influence of gravity factors, and the descaling uniformity of the upper surface and the lower surface is influenced; (5) the shot width of the shot blasting machine is required to meet the steel strip with the widest specification, when the width of the steel strip is narrowed, a part of grinding materials are caused to strike outside the width range of the steel strip and strike on a descaling box or a lining plate, so that the descaling efficiency is reduced, the equipment abrasion is accelerated, and the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a belted steel surface does not have acid descaling system, this system is based on wet-type shot-blasting descaling technology, has that the system constitutes simply, the surface descaling is effectual, no acid consumption, no dust pollution's characteristics, has solved the problem that traditional wet-type shot-blasting descaling technology exists because of belted steel horizontal transport arranges.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a strip steel surface acid-free descaling system comprises an uncoiler, a crop/tail shear, a descaling machine, a welding machine, a tension roller, a conveying roller way, a loop, a vertical acid-free descaling device, a surface water film cleaning device, a slitting shear and a coiling machine which are sequentially arranged along the advancing direction of strip steel, wherein another conveying roller way and another tension roller are sequentially arranged between the surface water film cleaning device and the slitting shear along the advancing direction of the strip steel;
the conveying roller way comprises a horizontal and vertical torsion mechanism so as to enable the strip steel to be converted between a horizontal conveying state and a vertical conveying state;
the vertical acid-free descaling device comprises a descaling box and a plurality of wet type impeller heads with nozzle angle adjusting mechanisms; the middle part of the left end face of the descaling box is provided with a vertical slender strip steel inlet, the middle part of the right end face of the descaling box is provided with a vertical slender strip steel outlet, and strip steel vertically passes through the descaling box; an inlet pinch roll is arranged on the front side of the strip steel inlet, and an outlet pinch roll is arranged on the rear side of the strip steel outlet; a horizontal conveying roller way is arranged at the elevation position of the unit in the descaling box, and a flushing device is arranged in the box body and close to the strip steel outlet; a vertical pinch roll is arranged above the descaling box, and an abrasive material collecting chamber is arranged below the descaling box;
the wet type impeller heads are symmetrically arranged on two sides of the vertical conveying strip steel in an even number of pairs, and are symmetrically arranged on the side walls of the operation side and the transmission side of the descaling box by taking the central plane of the descaling box in the length direction as a central axis; the rotating axis of the wet type impeller head and the advancing direction of the strip steel form an included angle alpha, and a feed inlet of the wet type impeller head is in a high position; each pair of wet type impeller heads is opposite to the striking area on the strip steel, and the steering of the next pair of wet type impeller heads is the same as or opposite to that of the previous pair; an included angle beta is formed between the base mounting surface of the wet type impeller head and the surface of the strip steel, and the angle beta is 0-45 degrees.
Further, the scale breaker is a straightening and pulling scale breaker or a roller type straightening machine.
Further, the loop is a spiral loop, a horizontal loop or a vertical loop.
Further, the surface water film cleaning device comprises a drying roller, an air knife and/or a dryer.
Further, at least one set of vertical acid-free descaling device is provided.
Further, the uncoiler is single uncoiling, and the coiler is single coiling.
Further, the uncoiler is double uncoiling, and the coiler is double coiling.
The beneficial effects of the utility model reside in that:
(1) the system adopts the arrangement of vertical descaling, namely the strip steel vertically advances, the grinding materials cannot be accumulated on the surface of the strip steel, are not easy to press or scratch the surface of the strip steel, are convenient to clean and are not influenced by the action of gravity, the two surfaces of the strip steel are uniformly descaled, the integral descaling effect is good, and the descaling efficiency is high.
(2) The system is based on the characteristics that the position of one side of the bottom of the strip steel is unchanged and the relative height of one side of the upper part of the strip steel is changed along with the change of the width of the strip steel in vertical descaling, and the design that the wet type impeller head deflects for a certain angle relative to the advancing direction of the strip steel is adopted to adapt to the strip steel with different width specifications, so that all grinding materials are impacted in the width range of the strip steel, and the equipment abrasion is reduced; meanwhile, the hitting amount of the abrasive on a unit area is increased, and the descaling efficiency is further improved.
(3) The system has the advantages of no acid consumption, no dust and no pollution, and is simple in system structure, low in failure rate, economical and reliable.
Drawings
In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention provides the following drawings for illustration:
FIG. 1 is a schematic structural diagram of a system for acid-free descaling of the surface of strip steel;
FIG. 2 is a schematic structural view of the vertical acid-free descaling device shown in FIG. 1;
FIG. 3 is a schematic structural view of a wet type impeller head inclined at an angle of beta;
fig. 4 is a schematic diagram of the change of the striking width of the wet type impeller after deflecting by an angle alpha.
Reference numerals: the device comprises an uncoiler 1, a head/tail shear 2, a scale breaker 3, a welding machine 4, a tension roller 5, a conveying roller way 6, a loop 7, a vertical acid-free descaling device 8, a descaling box 81, a strip steel inlet 811, a strip steel outlet 812, a wet type impeller head 82, a horizontal conveying roller way 83, a vertical pinch roller 84, a flushing device 85, an inlet pinch roller 86, an outlet pinch roller 87, an abrasive material collecting chamber 88, strip steel 89, a surface water film cleaning device 9, a slitting shear 10 and a coiling machine 11.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the present embodiment provides a strip steel surface acid-free descaling system, which includes an uncoiler 1, a crop/tail shear 2, a descaler 3, a welder 4, a tension roller 5, a rollgang 6, a loop 7, a vertical acid-free descaling device 8, a surface water film cleaning device 9, a slitting shear 10, and a coiler 11, which are sequentially arranged along the advancing direction of a strip steel 89, wherein another rollgang 6 and a tension roller 5 are further sequentially arranged between the surface water film cleaning device 9 and the slitting shear 10 along the advancing direction of the strip steel 89.
According to the actual production speed, the uncoiler 11 and the coiler 11 adopt single uncoiling and single coiling or double uncoiling and double coiling.
The scale breaker 3 is a straightening scale breaker 3 or a roller straightener, so that scales on the surface of the strip steel 89 are damaged and loosened, and favorable conditions are created for subsequent descaling.
The rollgang 6 includes a horizontal and vertical twisting mechanism to switch the strip 89 between a horizontal transport state and a vertical transport state. The steel strip 89 is transferred from the horizontal conveyance to the vertical conveyance before it enters the vertical acid-free descaling device 8, and the steel strip 89 is transferred from the vertical conveyance to the horizontal conveyance after it passes through the surface water film cleaning device 9.
The loop 7 is a spiral loop, a horizontal loop or a vertical loop, preferably a spiral loop, and the spiral loop is convenient for realizing the conversion of the strip steel 89 from horizontal forward to vertical forward.
The surface water film cleaning device 9 comprises a wringing roller, an air knife and/or a dryer.
As shown in fig. 2, two sets of the vertical acid-free descaling devices 8 are arranged in series, and each set of the vertical acid-free descaling devices 8 comprises a descaling box 81 and a plurality of wet type blasting machines 82 with a nozzle angle adjusting mechanism. A vertical slender strip steel inlet 811 is formed in the middle of the left end face of the descaling box 81, a vertical slender strip steel outlet 812 is formed in the middle of the right end face of the descaling box 81, and strip steel 89 vertically passes through the descaling box 81; an inlet pinch roll 86 is arranged on the front side of the strip steel inlet 811, and an outlet pinch roll 87 is arranged on the right side of the strip steel outlet 812.
The inside of descaling box 81 is equipped with horizontal rollgang 83 at the unit elevation position, horizontal rollgang 83 middle part is the hourglass type, and the centre is thin, and both sides are thick, prevents belted steel 89 off tracking in transportation process, adopts chain drive. The inside of the descaling box 81 and the position close to the strip steel outlet 812 in the box body are provided with the flushing device 85, and the strip steel 89 vertically passes through, so that the abrasive on the surface of the strip steel 89 is not easy to accumulate, and the requirement on the flushing device 85 is reduced.
An abrasive collecting chamber 88 is arranged below the descaling box 81, and is used for collecting the abrasives thrown by the wet type impeller 82 and enabling the abrasives to enter an abrasive circulating supply system so as to be recycled.
The wet type impeller heads 82 are symmetrically arranged on two sides of the vertical conveying strip steel 89 in an even number of pairs, and are symmetrically arranged on the side walls of the operation side and the transmission side of the descaling box 81 by taking a central plane I-I in the length direction of the descaling box 81 as a central axis; an included angle alpha is formed between the rotation axis of the wet type impeller 82 and the advancing direction of the strip steel 89, and the feed inlet of the wet type impeller 82 is in a high position, so that the material is conveniently fed to the wet type impeller 82; each pair of wet blasting devices 82 is opposite to the striking area on the strip steel 89, and the direction of the next pair of wet blasting devices 82 is the same as or opposite to that of the previous pair.
The wet type impeller heads 82 are opposite in rotation direction, and are symmetrically arranged on the descaling box 81 from left to right, so that the hitting directions of the grinding materials are opposite, the wet type impeller heads 82 make up for each other, the hitting force is more uniform, the descaling is more thorough, and the effect is better.
As shown in fig. 3, an included angle β is formed between the base mounting surface of the wet blasting device 82 and the surface of the strip steel 89, the β angle is 0 to 45 °, preferably, the β angle is 15 to 30 °, so that the adverse effect of the rebound of the abrasive on the descaling effect is reduced, the abrasive is rebounded toward the center of the descaling box 81, and the flying-out of the abrasive and water from the strip steel inlet 811 and the strip steel outlet 812 is reduced.
The strip steel 89 vertically passes through the vertical acid-free descaling device 8, abrasive and water cannot be accumulated on the surface of the strip steel 89, the strip steel 89 cannot be scratched by the abrasive, the defect of uneven descaling caused by different vertical casting speeds under the action of gravity in horizontal descaling of the strip steel 89 is overcome, the descaling efficiency is improved, and the descaling effect is improved.
As shown in fig. 4, the long side of the striking area when the wet blast device 82 is horizontally disposed is set to L, the short side is set to W, and the long side L is slightly larger than the maximum width of the strip steel 89. When the width of the strip steel 89 is narrowed, the wet type impeller 82 is deflected for a certain angle alpha relative to the advancing direction of the strip steel 89, the long side of a striking area along the width direction of the strip steel 89 is changed into L1 (L × cos alpha), L1 is slightly larger than the narrowed width of the strip steel 89 and is smaller than the long side L of the striking area when the wet type impeller 82 is horizontally arranged, so that the striking area in the width direction of the strip steel 89 after deflection is seen to be narrowed, excessive abrasive materials are prevented from being thrown out of the width range of the strip steel 89, and equipment abrasion is reduced; meanwhile, the short side W of the striking area is changed into W1 which is W/cos alpha along the advancing direction of the strip steel 89, which is equivalent to the increase of the striking amount of the abrasive in unit area, and the descaling efficiency is improved.
In addition, for the strip steels 89 with different width specifications, the bottom position of the strip steels is unchanged when the strip steels vertically pass through the descaling box 81 and is always on the horizontal conveying roller way 83. When the wet type impeller head 82 deflects by an angle of alpha, the bottom of the abrasive striking area changes, and the projection position is adjusted by combining with a nozzle angle adjusting mechanism of the wet type impeller head 82, so that the striking area still covers the whole width range of the strip steel 89.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (7)
1. The strip steel surface acid-free descaling system is characterized by comprising an uncoiler, a head/tail cutter, a descaling machine, a welding machine, a tension roller, a conveying roller way, a loop, a vertical acid-free descaling device, a surface water film cleaning device, a slitting cutter and a coiling machine which are sequentially arranged along the advancing direction of strip steel, wherein another conveying roller way and another tension roller are sequentially arranged between the surface water film cleaning device and the slitting cutter along the advancing direction of the strip steel;
the conveying roller way comprises a horizontal and vertical torsion mechanism so as to enable the strip steel to be converted between a horizontal conveying state and a vertical conveying state;
the vertical acid-free descaling device comprises a descaling box and a plurality of wet type impeller heads with nozzle angle adjusting mechanisms; the middle part of the left end face of the descaling box is provided with a vertical slender strip steel inlet, the middle part of the right end face of the descaling box is provided with a vertical slender strip steel outlet, and strip steel vertically passes through the descaling box; an inlet pinch roll is arranged on the front side of the strip steel inlet, and an outlet pinch roll is arranged on the rear side of the strip steel outlet; a horizontal conveying roller way is arranged at the elevation position of the unit in the descaling box, and a flushing device is arranged in the box body and close to the strip steel outlet; a vertical pinch roll is arranged above the descaling box, and an abrasive material collecting chamber is arranged below the descaling box;
the wet type impeller heads are symmetrically arranged on two sides of the vertical conveying strip steel in an even number of pairs, and are symmetrically arranged on the side walls of the operation side and the transmission side of the descaling box by taking the central plane of the descaling box in the length direction as a central axis; the rotating axis of the wet type impeller head and the advancing direction of the strip steel form an included angle alpha, and a feed inlet of the wet type impeller head is in a high position; each pair of wet type impeller heads is opposite to the striking area on the strip steel, and the steering of the next pair of wet type impeller heads is the same as or opposite to that of the previous pair; an included angle beta is formed between the base mounting surface of the wet type impeller head and the surface of the strip steel, and the angle beta is 0-45 degrees.
2. The strip steel surface acid-free descaling system of claim 1, wherein the descaler is a straightening descaler or a roll leveler.
3. The strip steel surface acid-free descaling system of claim 1, wherein the loop is a spiral loop, a horizontal loop or a vertical loop.
4. The system for acid-free descaling of a steel strip surface of claim 1, wherein the surface water film cleaning device comprises a wringing roller, an air knife and/or a dryer.
5. The system for acid-free descaling of a steel strip surface of claim 1, wherein at least one set of the vertical acid-free descaling devices is provided.
6. The strip steel surface acid-free descaling system of claim 1, wherein the uncoiler is a single uncoiler and the coiler is a single coiling.
7. The strip steel surface acid-free descaling system of claim 1, wherein the uncoiler is a double uncoiler and the coiler is a double coiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922186695.8U CN211538998U (en) | 2019-12-09 | 2019-12-09 | Strip steel surface acid-free descaling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922186695.8U CN211538998U (en) | 2019-12-09 | 2019-12-09 | Strip steel surface acid-free descaling system |
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| CN211538998U true CN211538998U (en) | 2020-09-22 |
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| CN201922186695.8U Active CN211538998U (en) | 2019-12-09 | 2019-12-09 | Strip steel surface acid-free descaling system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113732086A (en) * | 2021-10-09 | 2021-12-03 | 北京京诚之星科技开发有限公司 | Push-pull and continuous dual-purpose strip steel surface cleaning production line and cleaning method thereof |
| CN114309096A (en) * | 2021-12-03 | 2022-04-12 | 中冶赛迪技术研究中心有限公司 | All-round belted steel does not have acid descaling system |
-
2019
- 2019-12-09 CN CN201922186695.8U patent/CN211538998U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113732086A (en) * | 2021-10-09 | 2021-12-03 | 北京京诚之星科技开发有限公司 | Push-pull and continuous dual-purpose strip steel surface cleaning production line and cleaning method thereof |
| CN114309096A (en) * | 2021-12-03 | 2022-04-12 | 中冶赛迪技术研究中心有限公司 | All-round belted steel does not have acid descaling system |
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