CN214612776U - Strip steel rinsing device and strip steel acid pickling system - Google Patents
Strip steel rinsing device and strip steel acid pickling system Download PDFInfo
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- CN214612776U CN214612776U CN202120540586.6U CN202120540586U CN214612776U CN 214612776 U CN214612776 U CN 214612776U CN 202120540586 U CN202120540586 U CN 202120540586U CN 214612776 U CN214612776 U CN 214612776U
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Abstract
The utility model relates to a strip steel rinsing device, wherein a rinsing mechanism comprises a first nozzle group and a second nozzle group, each first nozzle is obliquely downwards sprayed towards the incoming material side, the intersecting track between the jet flow of each first nozzle and a strip steel running channel is a straight line, the intersecting track between the jet flow of each second nozzle and the strip steel running channel is a solid circle, and the track of the solid circle is positioned at the downstream of the straight line track; and/or the lower rinsing mechanism comprises at least one group of third nozzle groups, and the intersecting track between the jet flow of each third nozzle and the strip steel running channel is a solid circle. In addition, the strip steel acid washing system adopting the strip steel rinsing device is also provided. The utility model discloses in, first nozzle group can clear up the remaining acidizing fluid of belted steel upper surface, and second nozzle group can form the liquid film layer at the belted steel upper surface, and third nozzle group can form the liquid curtain at the belted steel lower surface, plays the effect of isolation air, can restrain the growth of belted steel surface rust spot effectively, improves the cleaning performance and the face quality of pickling belted steel.
Description
Technical Field
The utility model belongs to the technical field of belted steel pickling, concretely relates to belted steel rinsing device and adopt this belted steel rinsing device's belted steel pickling system.
Background
Before cold rolling, the oxide scales on the surface of the hot-rolled strip steel need to be removed completely, and at present, acid pickling is still the most efficient means for removing the oxide scales, namely, the strip steel is soaked in an acid pickling device filled with acid liquor at a certain temperature, and after the strip steel passes through the acid pickling device at a certain speed, the oxide scales on the surface of the strip steel are removed under the chemical action of the acid liquor.
After the pickling process is finished, the surface of the strip needs to be rinsed so as to thoroughly remove residual acid liquor on the surface of the strip and prevent the surface of the dried strip from rusting. At present, the combination of pre-rinsing and subsequent multi-stage rinsing is an effective strip steel rinsing scheme, wherein the pre-rinsing is more critical for preventing rust spots from being generated on the surface of a strip steel, but the acid liquor on the surface of the strip steel cannot be thoroughly removed by the pre-rinsing, so that the rust spots begin to grow when the surface of the strip steel enters the first-stage rinsing, and the rust spots cannot be removed by the subsequent rinsing, the quality of the plate surface is finally influenced, and even waste products can be generated.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a belted steel rinsing device and adopt this belted steel rinsing device's belted steel pickling system can solve prior art's partial defect at least.
The utility model relates to a strip steel rinsing device, which comprises an upper rinsing mechanism arranged above a strip steel running channel and a lower rinsing mechanism arranged below the strip steel running channel,
the upper rinsing mechanism comprises a first nozzle group and a second nozzle group; the first nozzle group comprises a plurality of first nozzles which are arranged in a row along the width direction of the strip steel running channel, the first nozzles are obliquely downwards sprayed towards the incoming material side, and the intersecting track between the jet flow of the first nozzles and the strip steel running channel is a straight line; the second nozzle group comprises a plurality of second nozzles which are arranged along the width direction of the strip steel running channel, and the intersecting track between the jet flow of the second nozzles and the strip steel running channel is a solid circle; in addition, along the length direction of the strip steel running channel, the solid circular track is positioned at the downstream of the linear track;
and/or the lower rinsing mechanism comprises at least one group of third nozzle groups, each third nozzle group comprises a plurality of third nozzles which are arranged in the width direction of the strip steel running channel, and the intersecting track between the jet flow of each third nozzle and the strip steel running channel is a solid circle.
In one embodiment, the upper rinsing mechanism further includes a composite jet nozzle, and the first nozzle group and the second nozzle group are integrally arranged on the composite jet nozzle.
In one embodiment, the first nozzle is a fan nozzle.
In one embodiment, the second nozzle is a solid cone nozzle.
In one embodiment, the third nozzle is a solid cone nozzle.
In one embodiment, a pressure pump is disposed in the rinse water supply pipe of the upper rinsing mechanism and/or the rinse water supply pipe of the lower rinsing mechanism.
In one embodiment, the rinse water supply pipe of the upper rinsing mechanism and/or the rinse water supply pipe of the lower rinsing mechanism is connected to a pure water source.
The utility model discloses still relate to a belted steel pickling system, including at least one pickling section, rinsing unit and at least one rinsing section in advance, the rinsing unit adopts as above belted steel rinsing device in advance.
As an embodiment, the pre-rinsing unit is arranged in an acid tank of the end pickling section.
The utility model discloses following beneficial effect has at least:
the utility model provides a belted steel rinsing device adopts two sets of nozzle groups and carries out the lectotype design to two sets of nozzle groups, and first nozzle group can clear up the remaining acidizing fluid of belted steel upper surface, and second nozzle group can form the liquid rete at the belted steel upper surface, and third nozzle group can form the liquid curtain at the belted steel lower surface, plays the effect of air isolation, can restrain the growth of belted steel surface rust spot effectively to improve the cleaning performance and the face quality of pickling belted steel.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a strip steel pickling system provided by an embodiment of the present invention;
fig. 2 is a schematic view of an installation structure of a first nozzle and a second nozzle on a composite jet nozzle according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the distribution of the jet trajectories of the first nozzle group and the second nozzle group on the strip steel surface according to the embodiment of the present invention;
fig. 4 is a schematic view of an installation structure of a third nozzle on the lower jet spray pipe according to an embodiment of the present invention;
fig. 5 is a schematic diagram of the jet trajectory distribution of the third nozzle group on the strip steel surface according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in FIG. 1, the embodiment of the utility model provides a strip steel rinsing device, including arranging in last rinsing mechanism 1 of belted steel traffic lane top and arranging in the lower rinsing mechanism of belted steel traffic lane below, go up rinsing mechanism 1 and be used for rinsing the clearance to the belted steel upper surface, lower rinsing mechanism is used for rinsing the clearance to the belted steel lower surface.
The strip steel rinsing device can be used for pre-rinsing operation of pickling strip steel and can also be used for normal rinsing operation after pre-rinsing. When the strip steel rinsing device is used for pre-rinsing operation, the strip steel rinsing device can be arranged in the tail-end acid tank 2, and the strip steel rinsing device can be not provided with a rinsing tank body; when the strip steel rinsing device is used for normal rinsing operation, the strip steel rinsing device can be correspondingly provided with a rinsing groove body.
In a preferred embodiment, as shown in fig. 2, the upper rinsing mechanism 1 includes a first nozzle group and a second nozzle group; the first nozzle group comprises a plurality of first nozzles 111 which are arranged in a row along the width direction of the strip steel running channel, the first nozzles 111 are obliquely downwards sprayed towards the incoming material side, and the intersecting track between the jet flow of the first nozzles 111 and the strip steel running channel is a straight line; the second nozzle group comprises a plurality of second nozzles 112 which are arranged in a row along the width direction of the strip steel running channel, and the intersecting track between the jet flow of the second nozzles 112 and the strip steel running channel is a solid circle; in addition, along the length direction of the strip steel running channel, the solid circular track is positioned at the downstream of the linear track; and/or the lower rinsing mechanism comprises at least one group of third nozzle groups, the third nozzle groups comprise a plurality of third nozzles 121 which are arranged in a width direction of the strip steel running channel, and the intersecting track between the jet flow of the third nozzles 121 and the strip steel running channel is a solid circle.
The first nozzle group is used for cleaning the residual acid liquor on the upper surface of the strip steel, and each first nozzle 111 is sprayed towards the feeding side, namely the spraying direction of the first nozzle 111 faces the feeding side and forms an included angle with the horizontal direction, so that the residual acid liquor on the upper surface of the strip steel can be pushed towards the feeding side; optionally, the included angle is 30-60 degrees, and preferably 45 degrees. Wherein, the linear track jet of the first nozzle 111 on the upper surface of the strip steel can be parallel to the width direction of the strip steel running channel, or the linear track in fig. 3, that is, the linear track and the width direction of the strip steel running channel have an included angle (in this embodiment, the included angle is between 30-60 degrees, preferably 45 degrees), so as to push the residual acid liquor to the two sides of the strip steel, wherein, taking the central line of the strip steel running channel as a reference line, the linear track jet acting on the left side of the reference line is used for pushing the residual acid liquor to the outside of the left side of the strip steel, the linear track jet acting on the right side of the reference line is used for pushing the residual acid liquor to the outside of the right side of the strip steel, each first nozzle 111 is preferably arranged symmetrically relative to the reference line, so as to ensure the cleaning effect, the linear tracks of the two first nozzles 111 adjacent to the reference line can intersect, cleaning blind areas are avoided; the linear tracks on each side of the datum line can be positioned on the same straight line, and the adjacent linear tracks are partially overlapped, or the track distribution mode in FIG. 3 can be adopted, namely, the linear tracks on each side are staggered in the width direction and the length direction of the strip steel running channel, so that a cleaning path for gradually pushing the residual acid liquor from the central line of the strip steel to the edge of the strip steel is formed (the effect of wave folding is generated, due to the staggered jet flow tracks, the downstream jet flow generates and can inertially push the upstream residual acid liquor, and the jet flow close to the central line of the strip steel generates and can inertially push the residual acid liquor close to the edge of the strip steel), the number of required nozzles is less, and meanwhile, a cleaning blind area is avoided. In fig. 3, the injection trajectories of the 4 first nozzles 111 are shown, but obviously, the number of the first nozzles 111 is not limited to the number of the first nozzles 111, and the number of the first nozzles 111 may be designed and adjusted according to the width of the strip, the width of the linear trajectory of the first nozzles 111, and the like.
In one embodiment, the first nozzle 111 is a fan-shaped nozzle, so that the intersecting locus between the jet flow and the strip steel running channel (i.e. the upper surface of the strip steel) is a straight line parallel to the width direction of the strip steel running channel; of course, a slit nozzle is also possible.
The second nozzle group is used for forming a liquid film layer on the upper surface of the strip steel, and the liquid film layer can play a role in isolating air and can effectively inhibit the growth of rusty spots on the surface of the strip steel. Each second nozzle 112 may spray vertically downward or obliquely, preferably obliquely, and may also perform an acid cleaning function to some extent while forming the liquid film layer; further preferably, the spray is obliquely sprayed backwards, namely obliquely sprayed downwards towards the discharging side; when the inclined jet is performed, the included angle between the jet direction of each second nozzle 112 and the horizontal direction is preferably the same, so that the second nozzle group acts on the same transverse section of the steel strip, and optionally, the included angle is between 40 and 75 degrees, and is preferably 45 degrees. The spray areas of two adjacent second nozzles 112 on the upper surface of the strip steel preferably overlap to ensure that the liquid film layer completely covers the upper surface of the strip steel.
In one embodiment, the second nozzle 112 is a solid cone nozzle such that the intersecting trajectory between its jet and the strip travel path is a solid circle.
The strip steel rinsing device provided by the embodiment adopts two groups of nozzle groups and carries out the type selection design on the two groups of nozzle groups, the first nozzle group can clean the residual acid liquor on the upper surface of the strip steel, and the second nozzle group can form a liquid film layer on the upper surface of the strip steel, so that the air isolation effect is realized, the growth of rusty spots on the upper surface of the strip steel can be effectively inhibited, and the cleaning effect and the plate surface quality of the acid-cleaned strip steel are improved.
The first nozzle group and the second nozzle group can be respectively arranged on different spray pipes, and the first nozzle group and the second nozzle group can work independently. In a preferred embodiment provided by the present embodiment, the first nozzle group and the second nozzle group are arranged on the same nozzle, specifically, as shown in fig. 2, the upper rinsing mechanism 1 further includes a composite jet nozzle 113, and the first nozzle group and the second nozzle group are integrally arranged on the composite jet nozzle 113; based on the design, on one hand, the number and the occupied space of equipment can be reduced, the integration of the equipment is improved, the field management is convenient, especially when the strip steel rinsing device is used as a pre-rinsing device and is installed in the acid tank 2, the condition that the space in the acid tank 2 is limited can be better adapted, the influence on the original structure of the acid tank 2 is avoided, on the other hand, the working consistency and the working cooperativity of the first nozzle group and the second nozzle group can be ensured, and the working reliability of the strip steel rinsing device is ensured.
In practical production, the applicant finds that the rinsing liquid falls down due to the dead weight, so that the rinsing liquid cannot be accumulated on the lower surface of the strip steel, the lower surface of the strip steel is easy to contact with air, and rusty spots grow on the lower surface of the strip steel more seriously than on the upper surface of the strip steel. In this embodiment, as shown in fig. 5, by selecting the type of the third nozzle 121, the third nozzle group sprays the rinsing liquid on the lower surface of the strip steel and can form a liquid curtain on the lower surface of the strip steel, so as to isolate air and delay or inhibit the growth of rust spots on the lower surface of the strip steel; depending on the length of the open window region between the pickling and rinsing and the diameter of the solid circular path of the third nozzles 121, a plurality of sets of third nozzle sets may be provided to ensure that the liquid curtain formed by each third nozzle set at least partially covers the open window region between the pickling and rinsing, preferably substantially covers the open window region (e.g., can cover 80-90% of the length of the open window region) or completely covers the open window region.
In this embodiment, the open window area between the pickling and rinsing refers to a strip steel operation area where rust spots are likely to grow, and is related to the specific structure and layout of the pickling system; in this embodiment, as shown in fig. 1, the hollow window area is located in the overflow tank of the acid tank at the end section and between two adjacent sets of wringing rollers, the front wringing roller can remove most of the high-concentration acid liquid on the surface of the strip steel, the rear wringing roller can remove most of the rinsing liquid on the surface of the strip steel, and the strip steel at the outlet side of the rear wringing roller immediately enters the rinsing section at the first section.
Likewise, each third nozzle 121 may spray vertically upward or may spray obliquely; the spray areas of the adjacent third nozzles 121 on the lower surface of the strip preferably overlap to ensure that the liquid curtain completely covers the width of the strip. In one embodiment, the third nozzle 121 is a solid cone nozzle such that the intersecting trajectory between its jet and the strip running passage is a solid circle. In the embodiment shown in fig. 4, two sets of third spray nozzles are integrated on the same lower jet nozzle 122, the first set of third spray nozzles spraying obliquely upward toward the incoming material side, and the second set of third spray nozzles spraying obliquely rearward.
The strip steel rinsing device is preferably designed, and the upper rinsing mechanism and the lower rinsing mechanism are adopted at the same time, so that the growth of rusty spots on the surface of strip steel can be effectively inhibited, and the cleaning effect and the plate surface quality of pickled strip steel are improved.
Further optimizing the strip steel rinsing device, a pressure pump 13 is arranged on the rinsing water supply pipe of the upper rinsing mechanism 1 and/or the rinsing water supply pipe of the lower rinsing mechanism. The pressure pump 13 is arranged, so that the strip steel rinsing device can be ensured to have enough rinsing liquid flow, and the acid liquid removing effect on the strip steel is improved; when the strip steel rinsing device is used for pre-rinsing operation of pickling strip steel, the condition that the conventional pre-rinsing flow is small and the acid liquor removing capacity on the surface of the strip steel is limited is avoided. In one embodiment, as shown in fig. 1, the upper rinsing means 1 and the lower rinsing means share the same rinsing water supply pipe, the cleaning effect of the upper and lower surfaces of the strip can be improved.
Further optimize above-mentioned belted steel rinsing device, rinse water supply pipe and/or the rinse water supply pipe of rinsing mechanism under in the rinsing mechanism of going up 1 is connected with the pure water source. The pure water is used as the rinsing liquid, so that the condition that each nozzle is blocked can be avoided, the problem that the nozzles of the conventional rinsing device are easy to block is thoroughly solved, and the working reliability of the strip steel rinsing device is ensured.
Example two
Referring to fig. 1, an embodiment of the present invention provides a strip steel pickling system, including at least one pickling section, a pre-rinsing unit, and at least one rinsing section 3, where the pre-rinsing unit uses the strip steel rinsing apparatus provided in the first embodiment.
Preferably, as shown in fig. 1, the pre-rinse unit is arranged in the acid tank 2 of the end pickling section. Further, the pre-rinsing unit is arranged in the overflow groove of the tail-end acid tank 2, so that the contact between the strip steel and the acid liquor can be avoided at the pre-rinsing position, the pre-rinsing effect can be ensured, the pre-rinsing unit is arranged in the tail-end acid tank 2, and based on the design that the liquid film layer is formed on the upper surface of the strip steel through the second nozzle group and the liquid curtain is formed on the lower surface of the strip steel through the third nozzle group, in the process that the strip steel enters the first-end rinsing section 3 from the tail-end acid tank 2, the growth of rusty spots on the surface of the strip steel can be effectively inhibited due to the protection of the liquid film layer and the liquid curtain.
The rinsing section 3 can adopt the conventional equipment structure of the rinsing section 3 in the field, and can also adopt the strip steel rinsing device provided by the first embodiment.
EXAMPLE III
The embodiment of the utility model provides a pickling belted steel cleaning method, include:
pre-rinsing the strip steel after the pickling, and then performing at least one section of rinsing treatment;
the pre-rinsing treatment adopts the strip steel rinsing device provided by the first embodiment, as shown in fig. 3, when an upper rinsing mechanism in the strip steel rinsing device is adopted, the residual acid solution on the upper surface of the strip steel is cleaned through the first nozzle group, and a liquid film layer is formed on the upper surface of the strip steel through the second nozzle group to isolate air; as shown in fig. 5, when the lower rinsing mechanism of the strip rinsing apparatus is used, a liquid curtain is formed on the lower surface of the strip by each of the third nozzle groups to isolate air.
The specific structure of the strip rinsing device and the related cleaning operations (including pre-rinsing with pure water, etc.) are described in the first embodiment, and will not be described herein.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a belted steel rinsing device, is including arranging in last rinsing mechanism of belted steel traffic lane top and arranging in the lower rinsing mechanism of belted steel traffic lane below, its characterized in that:
the upper rinsing mechanism comprises a first nozzle group and a second nozzle group; the first nozzle group comprises a plurality of first nozzles which are arranged in a row along the width direction of the strip steel running channel, the first nozzles are obliquely downwards sprayed towards the incoming material side, and the intersecting track between the jet flow of the first nozzles and the strip steel running channel is a straight line; the second nozzle group comprises a plurality of second nozzles which are arranged along the width direction of the strip steel running channel, and the intersecting track between the jet flow of the second nozzles and the strip steel running channel is a solid circle; in addition, along the length direction of the strip steel running channel, the solid circular track is positioned at the downstream of the linear track;
and/or the lower rinsing mechanism comprises at least one group of third nozzle groups, each third nozzle group comprises a plurality of third nozzles which are arranged in the width direction of the strip steel running channel, and the intersecting track between the jet flow of each third nozzle and the strip steel running channel is a solid circle.
2. The strip steel rinsing device as claimed in claim 1, characterized in that: the upper rinsing mechanism further comprises a composite jet flow spray pipe, and the first nozzle group and the second nozzle group are integrally arranged on the composite jet flow spray pipe.
3. The strip steel rinsing device as claimed in claim 1, characterized in that: the first nozzle is a fan nozzle.
4. The strip steel rinsing device as claimed in claim 1, characterized in that: the second nozzle is a solid cone nozzle.
5. The strip steel rinsing device as claimed in claim 1, characterized in that: the third nozzle is a solid cone nozzle.
6. The strip steel rinsing device as claimed in claim 1, characterized in that: and a pressure pump is arranged on the rinsing water supply pipe of the upper rinsing mechanism and/or the rinsing water supply pipe of the lower rinsing mechanism.
7. The strip steel rinsing device as claimed in claim 1, characterized in that: and the rinsing water supply pipe of the upper rinsing mechanism and/or the rinsing water supply pipe of the lower rinsing mechanism are/is connected with a pure water source.
8. The utility model provides a belted steel pickling system, includes at least one pickling section, rinses unit and at least one rinsing section in advance, its characterized in that: the pre-rinsing unit employs the strip rinsing apparatus according to any one of claims 1 to 7.
9. The strip steel pickling system of claim 8, wherein: the pre-rinsing unit is arranged in an acid tank of the tail pickling section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120540586.6U CN214612776U (en) | 2021-03-16 | 2021-03-16 | Strip steel rinsing device and strip steel acid pickling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120540586.6U CN214612776U (en) | 2021-03-16 | 2021-03-16 | Strip steel rinsing device and strip steel acid pickling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151839A (en) * | 2021-03-16 | 2021-07-23 | 中冶南方工程技术有限公司 | Strip steel rinsing device, strip steel pickling system and pickled strip steel cleaning method |
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2021
- 2021-03-16 CN CN202120540586.6U patent/CN214612776U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113151839A (en) * | 2021-03-16 | 2021-07-23 | 中冶南方工程技术有限公司 | Strip steel rinsing device, strip steel pickling system and pickled strip steel cleaning method |
| CN113151839B (en) * | 2021-03-16 | 2024-06-25 | 中冶南方工程技术有限公司 | Strip steel rinsing device, strip steel pickling system and pickling strip steel cleaning method |
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