CN110438515B - Turbulent flow type pickling device and strip processing system - Google Patents
Turbulent flow type pickling device and strip processing system Download PDFInfo
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- CN110438515B CN110438515B CN201910795259.2A CN201910795259A CN110438515B CN 110438515 B CN110438515 B CN 110438515B CN 201910795259 A CN201910795259 A CN 201910795259A CN 110438515 B CN110438515 B CN 110438515B
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- 238000005554 pickling Methods 0.000 title claims abstract description 99
- 238000012545 processing Methods 0.000 title claims description 7
- 239000002253 acid Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims description 46
- 230000000903 blocking effect Effects 0.000 claims description 36
- 238000005507 spraying Methods 0.000 claims description 34
- 238000004140 cleaning Methods 0.000 claims description 29
- 238000005096 rolling process Methods 0.000 claims description 17
- 238000003825 pressing Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 4
- 239000001257 hydrogen Substances 0.000 abstract description 4
- -1 hydrogen ions Chemical class 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 51
- 239000003595 mist Substances 0.000 description 12
- 230000007704 transition Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 238000007789 sealing Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention relates to a turbulent pickling device and a strip treatment system adopting the same. According to the invention, the free roller is arranged, and is driven by friction of the movement of the strip to rotate around the axis of the free roller, so that the acid liquor boundary layer on the surface of the strip can be continuously torn, the turbulent flow of the acid liquor is enhanced, the diffusion speed of hydrogen ions in the boundary layer on the surface of the strip is improved, and the acid washing effect is effectively improved.
Description
Technical Field
The invention belongs to the technical field of strip pickling, and particularly relates to a turbulent pickling device and a strip treatment system adopting the turbulent pickling device.
Background
In the field of strip pickling, the pickling device 1 is a critical process device. The strip is soaked in a pickling device 1 filled with acid liquor at a certain temperature, and after passing through the pickling device 1 at a certain speed, the oxide skin on the surface of the strip is removed under the chemical action of the acid liquor. In order to ensure that the oxide skin on the surface of the strip can be thoroughly removed at the maximum process speed, a reasonable length of the pickling device 1 needs to be designed according to the required pickling time. The length of the pickling device 1 is directly related to the investment of a factory building and the stability of unit operation, the energy consumption in the pickling process can be influenced, the pickling device 1 is long, and the dissipation of heat energy and the discharge amount of acid mist are large, so that the pickling efficiency of the pickling device 1 needs to be improved as much as possible, and the length of the pickling device 1 is shortened.
The current main stream pickling device 1 is a turbulent flow type shallow groove, as shown in fig. 1, and is characterized in that an inner cover is arranged to enable acid liquor to be filled in a relatively airtight cavity with shallower depth, and a plurality of andesite or wear plates are arranged at the bottom of the cavity, so that the running track of a strip in the pickling device 1 is almost straight; in order to ensure that the cavity is always filled with acid liquor, a large spray pipe 101 is arranged at the inlet and the outlet of the cavity, the acid liquor with certain pressure is converted into high-speed jet flow in the spray pipe 101 through a nozzle, and the high-speed jet flow continuously enters the cavity from the inlet and the outlet of the cavity, so that the liquid seal of the acid liquor in the cavity is realized, and a large amount of acid liquor can only flow out from an overflow weir in the middle of the cavity.
The turbulence type shallow grooves are formed by the high-speed jet flow of the jet pipe 101 at both ends, and are concentrated on the upper part of the strip, because the sprayed acid liquid is blocked by the strip and cannot effectively enter the lower part of the strip. Because of the strong resistance of the liquid, the flow state of the acid liquor in the middle of the turbulent type shallow groove is relatively stable, and the turbulent flow is mainly caused by the movement of the strip. If andesite is adopted at the bottom of the turbulent flow type shallow groove, the lower surface of the strip is easily scratched when certain products with softer textures are produced; if the wear-resistant plate is adopted, the acid liquor is polluted by the scraps scraped from the surface of the wear-resistant plate by the strip material, and the nozzle is blocked. The turbulent shallow groove is sealed by the large spray pipe 101 at the inlet and outlet, when producing products such as silicon steel which are easy to produce impurities to the acid liquid, the spray nozzle on the spray pipe 101 is easy to be blocked, and the acid liquid cannot be filled in the groove body finally along with the reduction of the sprayed acid liquid amount, so that the acid washing is failed, and defective products are produced; meanwhile, the high-speed jet flow continuously sprayed out of the large spray pipe 101 at the inlet and the outlet can generate a large amount of acid mist in the process of beating the acid liquid, and as the area is provided with the squeezing roller and the mist extraction port is required, the acid liquid is greatly lost along with the discharge of a large amount of acid mist, and the running cost of a unit can be increased when the acid mist is discharged after reaching the standard by treating the acid mist.
Disclosure of Invention
The embodiment of the invention relates to a turbulent pickling device and a strip treatment system adopting the turbulent pickling device, which at least can solve part of defects in the prior art.
The embodiment of the invention relates to a turbulent pickling device, which comprises a pickling tank, wherein a plurality of free rollers are arranged in the pickling tank and are used for being in rolling contact with the surface of a strip so as to tear an acid liquor boundary layer on the surface of the strip, and the axes of the free rollers are perpendicular to the running direction of the strip.
As one of the embodiments, each of the free rolls includes a plurality of free press rolls, and each of the free press rolls is disposed above the strip running channel in sequence along the strip running direction.
As one of the embodiments, the free press roller comprises a press roller shaft core fixed on the pickling tank and a rolling ring cylinder rotatably sleeved on the press roller shaft core.
As one of the embodiments, the inner diameter of the rolling ring cylinder is larger than the diameter of the roller shaft core.
As one embodiment, each free roller comprises a plurality of free carrier rollers, and each free carrier roller is sequentially arranged below the strip steel running channel along the strip steel running direction.
As one of the embodiments, a space is provided between the bottom of the free carrier roller and the bottom of the pickling tank.
As one embodiment, a plurality of side nozzles for spraying acid liquor are arranged on the side wall of the pickling tank.
As one embodiment, each of the side nozzles is located in the same horizontal plane as the strip running channel, and the spraying direction of the side nozzle is toward the strip running channel.
The embodiment of the invention also relates to a strip treatment system, which is provided with a pickling station and a cleaning station, wherein the cleaning station is provided with a strip cleaning device, and the pickling station is provided with the turbulent type pickling device.
The embodiment of the invention has at least the following beneficial effects:
according to the turbulent pickling device and the strip treatment system, the free roller is arranged and driven by friction of movement of the strip to rotate around the axis of the free roller, so that an acid liquor boundary layer on the surface of the strip can be continuously torn, turbulent flow of acid liquor is enhanced, diffusion speed of hydrogen ions in the boundary layer on the surface of the strip is improved, and pickling effect is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a conventional pickling apparatus according to the prior art;
FIG. 2 is a schematic diagram of a turbulent pickling apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic plan view of a turbulent pickling apparatus according to an embodiment of the present invention;
fig. 4 is a schematic plan view of a cleaning device according to a fourth embodiment of the present invention;
fig. 5-7 are cross-sectional views along A-A and B-B of fig. 4 at different spray widths.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
As shown in fig. 2 and 3, an embodiment of the present invention provides a turbulent pickling apparatus 1, which includes a pickling tank 102, wherein a plurality of free rollers are disposed in the pickling tank 102, the free rollers are used for rolling contact with the surface of a strip to tear an acid liquor boundary layer on the surface of the strip, and the axes of the free rollers are perpendicular to the running direction of the strip.
The pickling tank 102 is preferably a turbulent shallow tank as is conventional in the art.
It will be readily appreciated that the free rollers should be arranged so as to ensure rolling contact with the upper surface of the strip, as will be readily apparent to those skilled in the art, for example with their bottom ends flush with the top end of the strip run or with their top ends flush with the bottom end of the strip run. Obviously, the axis of the free rollers is also generally parallel to the horizontal; the free rolls are arranged in parallel.
In the embodiment, by arranging the free roller, the free roller rotates around the axis of the free roller under the friction drive of the movement of the strip, so that the acid liquor boundary layer on the surface of the strip can be continuously torn, the turbulence of the acid liquor is enhanced, the diffusion speed of hydrogen ions in the boundary layer on the surface of the strip is improved, and the pickling effect is effectively improved.
As shown in fig. 2 and 3, each free roller includes a plurality of free pressing rollers 107, and each free pressing roller 107 is sequentially arranged above the strip running channel along the running direction of the strip, that is, is used for rolling contact with the upper surface of the strip to tear the acid liquor boundary layer on the upper surface of the strip. It is further preferable that each be spaced apart by a pressing roller 107.
In an alternative embodiment, the free pressing roller 107 includes a pressing roller shaft core fixed on the pickling tank 102 and a rolling ring cylinder rotatably sleeved on the pressing roller shaft core, and the pressing roller shaft core and the rolling ring cylinder are preferably made of acid corrosion resistant materials with good wear resistance and self-lubrication performance. Further preferred structures are: the gap is arranged between the rolling ring cylinder and the compression roller shaft core, namely the inner diameter of the rolling ring cylinder is larger than the diameter of the compression roller shaft core (preferably slightly larger), so that the rolling ring cylinder is easier to rotate along with the friction of the belt material, and meanwhile, the impact force caused by the shake of the belt material can be buffered.
In one embodiment, as shown in fig. 2 and 3, each free roller includes a plurality of free rollers 108, and each free roller 108 is sequentially disposed below the strip running channel along the running direction of the strip, that is, is used to make rolling contact with the lower surface of the strip to tear the acid boundary layer on the lower surface of the strip. Further preferably each spaced apart by idlers 108.
In this embodiment, by arranging the free carrier roller 108, when the strip is supported, the free carrier roller 108 rotates around the axis of the free carrier roller under the friction drive of the movement of the strip, so that the acid liquor boundary layer on the lower surface of the strip can be continuously torn, the turbulence of the acid liquor is enhanced, the diffusion speed of hydrogen ions in the boundary layer on the surface of the strip is improved, and the acid pickling effect is effectively improved. As the andesite supporting strip is avoided, the problem of scratch of the lower surface of the strip in the running process is solved.
In an alternative embodiment, the free idler 108 includes an idler core secured to the pickling tank 102 and a rolling sleeve rotatably mounted over the idler core. The carrier roller shaft core and the rolling sleeve are both preferably made of acid corrosion resistance materials with good wear resistance and self-lubricating performance.
Further preferably, a space is formed between the bottom of the free carrier roller 108 and the bottom of the pickling tank 102 (the bottom plate of the pickling tank 102), so that the integrity of the inclined surface of the bottom plate is ensured, insoluble sediments are not locally accumulated, and the deposition and dredging difficulties are reduced.
Wherein, for the condition that the free compression roller 107 and the free carrier roller 108 are simultaneously arranged, the free compression roller 107 and the free carrier roller 108 can be the same in number and are arranged in a one-to-one correspondence manner, and in each pair of the free compression roller 107 and the free carrier roller 108 which are arranged up and down, the free compression roller 107 and the free carrier roller 108 can be opposite up and down and can also be arranged in a dislocation manner along the running direction of the strip, but the two are arranged adjacently, so that the running stability of the strip is ensured.
Further optimizing the structure of the above-mentioned turbulent pickling device 1, as shown in fig. 2 and 3, the side wall of the pickling tank 102 is provided with a plurality of side nozzles 109 for spraying acid liquor, and the acid liquor can be replenished into the pickling tank 102 through each side nozzle 109, and the acid liquor can be sprayed into the tank through the side nozzles 109 at a high speed, so that the overall turbulent intensity of the acid liquor in the tank can be remarkably improved, and the pickling effect can be improved. Wherein, preferably, a plurality of side nozzles 109 are arranged on the two side walls of the pickling tank 102; in a further preferred embodiment, as shown in fig. 2 and 3, each side nozzle 109 is located in the same horizontal plane with the strip running channel, and the spraying direction of the side nozzle 109 faces the strip running channel, so that the overall turbulence intensity of the acid solution in the tank, especially the turbulence intensity of the acid solution near the strip, is better.
Further optimizing the structure of the above-mentioned turbulent pickling device 1, the above-mentioned pickling tank 102 is provided with an overflow port 104, the pickling tank 102 preferably includes a tank body 102 and a tank cover, the tank cover is covered on the tank body 102 to enclose and form a relatively airtight cavity which is convenient for storing acid liquor, in one embodiment, the tank cover includes an outer cover 1101 and an inner cover 1102, the inner cover 1102 is pressed on an inner cover bearing platform at the top of the tank body 102, good sealing performance is achieved for acid liquor and acid mist in the cavity, and the outer cover 1101 can further improve the sealing performance of the turbulent pickling device 1.
Further, a plurality of sidewall protection blocks 111 may be disposed on the inner wall of the tank, for example, each sidewall protection block 111 is disposed on the inner cap base, so as to prevent the sidewall of the tank from being damaged due to the deviation of the strip during the operation.
The overflow port 104 is disposed on the tank 102, for example, in the middle of the tank 102 along the length direction of the tank.
Further optimizing the structure of the turbulent pickling device 1, wherein at least one end of the pickling tank 102 is a liquid separation end 103, the liquid separation end 103 is provided with a bearing dam 1031 and a liquid blocking dam 1032, the bearing dam 1031 extends upwards from the tank bottom, the liquid blocking dam 1032 extends downwards from the tank top, the bearing dam 1031 and the liquid blocking dam 1032 extend to the vicinity of a strip running channel respectively, and the space between the two dams can allow a strip to pass through; or the distance between the holding dam 1031 and the liquid-blocking dam 1032 is smaller than the thickness of the strip material, and the holding dam 1031 and/or the liquid-blocking dam 1032 are elastic dams, so that the strip material can press the elastic dams and pass between the holding dam 1031 and the liquid-blocking dam 1032.
In a preferred embodiment, both ends of the pickling tank 102 are provided as liquid-proof ends 103; obviously, the two ends of the corresponding pickling tank 102 are here the two ends of the pickling tank 102 in the direction of travel of the strip.
In a preferred embodiment, the holding dam 1031 is used for holding the strip while blocking the acid solution as a dam body, that is, the top end of the holding dam 1031 extends to be flush with the lower end of the strip running channel, for example, the holding dam 1031 is a wear-resistant block suitable for holding the strip; the back-up dam 1031 also has acid corrosion resistance, and at the same time, the back-up dam 1031 preferably absorbs impact force due to strip vibration, poor plate shape, etc., to some extent, for example, the wear-resistant block is a material (such as a wear-resistant block). In other embodiments, the back-up dam 1031 does not contact the lower surface of the strip during normal operation, e.g., there is a slight gap between the top of the back-up dam 1031 and the lower end of the path of travel of the strip.
In a preferred embodiment, in normal operation, the bottom end of the dam 1032 just contacts the upper surface of the strip or has a gap with the upper surface of the strip, and the smaller the gap, the better (preferably not more than 1 mm), i.e. the lower end of the dam 1032 extends to be flush with the upper end of the strip running channel, or the lower end of the dam 1032 is located on the strip running channel and close to the strip running channel. In this embodiment, the liquid blocking dam 1032 is preferably an elastic dam, which can better absorb impact force caused by jitter and poor plate shape of the strip while blocking the acid liquid flowing out from the upper part of the strip, and can adapt to different strip thicknesses. The liquid blocking dam 1032 may be fixed to the cap base, and the upper end of the liquid blocking dam contacts the cap 1102; preferably detachably, on the inner cap support, for example by clamping or by screw fastening.
For the elastic dam, the elastic dam can be a modified rubber block with wear resistance and acid corrosion resistance; of course, other elastic materials may be used, but preferably have acid corrosion resistance.
According to the turbulent pickling device 1 provided by the embodiment, the liquid separation end 103 formed by the bearing dam 1031 and the liquid blocking dam 1032 is arranged, so that a relatively airtight cavity which is convenient for storing acid liquid is formed inside the pickling tank 102, and the acid liquid at the two ends of the pickling tank 102 is not required to be subjected to liquid sealing by high-speed jet flow, so that a large amount of acid mist is not generated, and the acid consumption and the cost for subsequent acid mist treatment are reduced; meanwhile, the adaptability of the pickling tank 102 is greatly enhanced because the nozzle for liquid sealing is not provided, and the situations that the nozzle is blocked, the pickling tank cannot be filled with acid liquid and the pickling fails due to high impurity content in the acid liquid when the variety such as silicon steel is pickled are avoided.
In the above embodiment, a small amount of acid solution overflows from two ends of the pickling tank 102, and correspondingly, as shown in fig. 2 and 3, a transition tank 105 for collecting the acid solution flowing out from the end is connected to the outside of the liquid separation end 103, and an acid solution return port 1051 and a strip running channel are arranged on the transition tank 105. The acid liquid collected in the transition tank 105 can flow out through the acid liquid reflux port 1051 for recycling of the turbulent acid washing device 1. The bottom of the transition tank 105 is preferably lower than the top of the supporting dam 1031, and more preferably, the bottom of the transition tank 105 is lower than the bottom of the pickling tank 102, so as to facilitate the collection and backflow of the acid liquor. Further, the transition tank 105 is also provided with an end mist outlet to prevent acid mist from overflowing from the transition tank 105.
In general, the strip inlet side and the strip outlet side of the pickling tank 102 are respectively provided with a wringer roller 106, and in the above-mentioned structure provided with the transition tanks 105, the wringer rollers 106 on the side of the liquid-proof end 103 are disposed in the corresponding transition tanks 105, so as to reduce the occupied space.
In addition, the lowest point of the bottom of the pickling tank 102 is provided with a communication port, and a part of acid liquor is continuously discharged in a small flow rate through the communication port for recycling in production, so that a part of impurities deposited at the bottom of the pickling tank 102 can be discharged together with the acid liquor. The lowest point at the bottom of the pickling tank 102 is also provided with an emptying port, and when the unit is temporarily stopped or overhauled and stopped, the acid liquor in the pickling tank 102 can be rapidly emptied through the emptying port. After the unit is stopped, the acid liquid is completely discharged through the emptying port, and then the outer cover 1101 and the inner cover 1102 are lifted and opened together with the free pressing roller 107 through the cover remover, so that the unit can enter the tank for maintenance and cleaning. The pickling tank 102 is also provided with a water sealing tank, and discontinuous places of the water sealing tank are communicated through a water sealing tank communicating pipe, and the water sealing tank can provide good tightness for acid mist generated by the pickling tank 102.
Example two
The embodiment of the invention provides a strip processing system, which is provided with a pickling station and a cleaning station, wherein a strip cleaning device 2 is arranged at the cleaning station, and the turbulent pickling device 1 provided in the first embodiment is arranged at the pickling station, and the specific structure of the turbulent pickling device 1 is not described herein.
The cleaning station may be located upstream of the pickling station, i.e. after the strip has been first treated by the strip cleaning device 2, it is then treated by the turbulent pickling device 1, for example stainless steel strip; the pickling station may also be located upstream of the cleaning station, for example in the treatment of some cold rolled strip, etc., which are not described in detail here.
Example III
Referring to fig. 4, an embodiment of the present invention provides a liquid spraying tube 202, which includes a tube body 2021, and a plurality of nozzles 2022 are sequentially disposed on the tube body 2021 along the axial direction of the tube body, wherein the arrangement direction of each nozzle 2022 is generally aligned and parallel to the axial direction of the tube body, the spraying direction of each nozzle 2022 is generally the same, and each nozzle 2022 is preferably uniformly spaced.
As shown in fig. 4, a guide rod 2023 is disposed in the pipe body 2021, the guide rod 2023 is axially parallel to the pipe body, at least one block 2024 is disposed on the guide rod 2023, each block 2024 is matched with one nozzle 2022 and both are located on the same radial section of the pipe body 2021, and a guide rod driving mechanism for driving the guide rod 2023 to rotate so as to block or deviate the block 2024 from the corresponding nozzle 2022 is connected to the guide rod.
The above-described block 2024 may be mounted on the guide rod 2023 by a block bracket, and it is understood that the block bracket is disposed radially along the tube 2021. The guide rod driving mechanism drives the guide rods 2023 to rotate around the axis thereof, and can drive each block 2024 to rotate therewith, i.e. the blocks 2024 rotate around the guide rods 2023.
The guide rod 2023 is preferably disposed coaxially with the tube body 2021, and the blocking member 2024 is always in contact with the tube wall during rotation of the guide rod 2023. In another embodiment, the guide rods 2023 are eccentrically arranged, that is, the guide rod axis is deviated from the pipe body axis and is located on one side of the pipe body axis near each nozzle 2022, so that the distance between the blocking surface of the blocking block 2024 and the guide rod axis is equal to the distance between the guide rod axis and the inlet of the nozzle 2022, each blocking block 2024 contacts the inner wall of the pipe body 2021 to block the corresponding nozzle 2022 only when rotating to be opposite to the corresponding nozzle 2022 during the rotation of the guide rod 2023, and the blocking block 2024 does not contact the inner wall of the pipe body 2021 at other moments, so that the abrasion of the blocking block 2024 can be reduced, and the influence on the service life of the guide rod 2023 caused by the continuous transmission of the friction force of the blocking block 2024 to the guide rod 2023 is avoided.
Wherein, the block 2024 is preferably a rubber block; the plugging surface of the plugging block 2024 is preferably an arc surface with the same curvature as the inner wall of the pipe body 2021, and in the structure in which the guide rod 2023 is eccentrically arranged, the plugging surface of the plugging block 2024 may be an arc surface suitable for inscribing the pipe wall at the nozzle 2022, so that the plugging effect on the liquid inlet of the nozzle 2022 can be ensured. Further preferably, as shown in fig. 5-7, a groove is formed in the middle of the plugging surface of the plugging block 2024, so that friction between the plugging block 2024 and the pipe wall can be reduced to a certain extent.
In the above-mentioned spray pipe 202, a part of the nozzles 2022 may be provided without a block 2024, that is, the part of the nozzles 2022 may be kept in a normally-sprayed/normally-opened state, and the rest of the nozzles 2022 may be plugged or not by a corresponding block 2024 to implement an opening/closing adjustment control, so that a normally-sprayed area and a spraying adjustment area are correspondingly formed on the pipe body 2021, further preferably, the normally-sprayed area is located in the middle of the pipe body 2021, and the spraying adjustment areas are two and are respectively arranged on the left and right sides of the normally-sprayed area, that is, the pipe body 2021 includes a middle normally-sprayed area and two spraying adjustment areas respectively arranged on the two sides of the middle normally-sprayed area, and each of the blocks 2024 is distributed in the two spraying adjustment areas. The spray pipe 202 with the structure can be suitable for engineering applications such as cleaning and cooling of the strip, and further preferably, the two spray adjusting areas are symmetrically arranged relative to the middle normal spraying area, so that the uniformity of the cleaning/cooling treatment of the strip is ensured.
It will be appreciated that when the middle constant velocity zone includes an even number of nozzles 2022, the even number of nozzles 2022 are symmetrically disposed about the strip processing train centerline, and when the middle constant velocity zone includes an odd number of nozzles 2022, one of the nozzles 2022 is located on the strip processing train centerline, and the remaining nozzles 2022 are symmetrically disposed about the strip processing train centerline.
In the spray adjustment area, the number of the blocks configured by each nozzle 2022 may be the same or may be configured differently; when the number of blocks configured by the nozzles 2022 is the same, the layout of the blocks 2024 may also be different, for example, two adjacent nozzles 2022 are configured with the same number of blocks but the blocks 2024 are arranged in a staggered manner, so that two nozzles 2022 alternately spray liquid.
In a preferred embodiment, each of said spray modulation zones comprises a plurality of spray modulation sections, each spray modulation section being provided with at least one nozzle 2022; in each spray adjustment section, the number and layout of the blocks matched with each nozzle 2022 are the same, so that in the spray adjustment section, the spraying timing of each nozzle 2022 is the same, namely spraying liquid or blocking at the same time; in adjacent two spray adjustment sections, the number of blocks matched by a single nozzle 2022 of one spray adjustment section is different from the number of blocks matched by a single nozzle 2022 of the other spray adjustment section. Based on this structure, the control of the sectional spray of the spray pipe 202 can be realized, wherein when one spray adjusting section sprays, the nozzle 2022 of the other spray adjusting section can be blocked to stop spraying, so that the spray coverage of the spray pipe 202 can be adjusted.
Preferably, when a single nozzle 2022 is provided with a plurality of blocks 2024, the blocks 2024 corresponding to the nozzle 2022 are uniformly spaced along the circumference of the tube 2021, so as to facilitate adjustment and control. The blocks 2024 corresponding to the nozzles 2022 may be disposed around 360 ° with respect to the guide rod 2023, or may be disposed in a fan shape with respect to the guide rod 2023.
In a further preferred embodiment, each of said blocks 2024 of each spray regulation zone comprises at least one axial block row, the number of blocks of said axial block row being the same as the number of nozzles 2022 of that spray regulation zone and the direction of alignment of each block 2024 being parallel to the tube axis. That is, the axial blocking row includes a plurality of blocking pieces 2024, and the blocking pieces 2024 included therein are arranged in one-to-one correspondence with the respective nozzles 2022 of the spray adjustment region, and the alignment direction of the respective blocking pieces 2024 of the axial blocking row is parallel to the pipe body axis, so that the axial blocking row can simultaneously block the respective nozzles 2022 of the spray adjustment region, that is, shut down the spray adjustment region.
Further, in the two spraying adjustment areas, at least two axial blocking columns are collinear, that is, one axial blocking column of one spraying adjustment area is collinear with one axial blocking column of the other spraying adjustment area, when the guide rod 2023 rotates, all nozzles 2022 of the two spraying adjustment areas can be blocked at the same time, and only the remaining middle normal spraying area works, so that the minimum spraying width is obtained.
In a further preferred embodiment, in each spray adjustment zone, the number of plugs matched by the individual nozzles 2022 of each spray adjustment zone increases in sequence from the middle constant spray zone towards the ends of the corresponding side pipes 2021. For example, from a middle constant spray zone to the direction of the end of the corresponding side tube 2021, the spray regulation zone includes a first spray regulation segment, a second spray regulation segment, and an nth spray regulation segment (N is greater than 2), the number of blocks matched by each nozzle 2022 in the first spray regulation segment is 1, the number of blocks matched by each nozzle 2022 in the second spray regulation segment is 2, and so on and progressively increases, the number of blocks matched by each nozzle 2022 in the nth spray regulation segment is N. Based on the above embodiment, the probability of closing the nozzle 2022 gradually increases from the middle constant spraying region toward the end of the corresponding side tube 2021, so that the spraying coverage of the liquid spraying tube 202 can be gradually reduced.
Further, in the above embodiment, in each spray adjustment area, there is one axial block row described above, with the axial block row as a reference row; in each block 2024 to which each nozzle 2022 is matched, the central angles of every two adjacent blocks 2024 with respect to the guide rod 2023 are all θ, that is, are sequentially arranged with the reference row as a starting point and the same arc length pitch. Then, each nozzle 2022 corresponding to the reference row is used as an initial position, after the guide rod 2023 rotates θ, the first spraying adjustment section is put into operation, after the guide rod 2023 rotates 2θ, the first spraying adjustment section and the second spraying adjustment section are put into operation, and after that, when the guide rod 2023 rotates θ, one spraying adjustment section is put into operation, so that the spraying width of the spraying pipe 202 is gradually increased, and the reverse operation is performed, so that the spraying width of the spraying pipe 202 is gradually reduced.
In the exemplary embodiment shown in fig. 4, the spray control zone comprises two spray control sections, each having a nozzle 2022, wherein the nozzle 2022 in the first spray control section is provided with a block 2024 and the nozzle 2022 in the second spray control section is provided with two blocks 2024, the two blocks 2024 having a central angle of 90 ° with respect to the guide rod 2023. Fig. 5 corresponds to a case where the object to be cleaned is the widest specification, and each nozzle 2022 is in an open state; fig. 6 corresponds to the case when the object to be cleaned is of the next widest specification, the nozzle 2022 in the first shower adjustment section is in an open state and the nozzle 2022 in the second shower adjustment section is in a closed state; fig. 7 corresponds to a case where the object to be cleaned is the narrowest specification, and the nozzles 2022 in the first shower adjustment section and the second shower adjustment section are both in the closed state. Obviously, as the number of spray adjustment sections increases correspondingly, the width specification of the object to be cleaned to which the liquid spray pipe 202 is applied increases correspondingly.
With the structure of the spray tube 202, as shown in fig. 4, the guide rod driving mechanism includes a guide rod driving unit connected to the guide rod 2023, two quick connectors capable of being assembled by male and female, and a positioning pin for locking the two quick connectors together, wherein one quick connector is fixed on the guide rod 2023, and the other quick connector is fixed at one end of the tube 2021. The male and female quick connector mating structures are known in the art and are commercially available, and their specific structures are not described in detail herein. Locating holes are formed in the female quick connector and the male quick connector respectively, for example, a plurality of locating holes are formed in the female quick connector, a locking hole is formed in the male quick connector, the locking holes are opposite to the locating holes in the female quick connector in an exchange mode in the relative rotation process of the female quick connector and the male quick connector, after the guide rod 2023 rotates in place, the guide rod 2023 can be limited after the locating pins are inserted into the locking holes and the corresponding locating holes, and therefore limiting of each blocking 2024 is achieved. It will be appreciated that in the above-described structure in which the central angle of each adjacent two of the blocks 2024 with respect to the guide rod 2023 is θ, the central angle corresponding to each adjacent two of the positioning holes is β, and θ may be equal to or multiple of β. The guide rod driving unit may be a driving handle or an automatic rotary driving device, which is not exemplified herein.
Of course, the guide rod driving mechanism is not limited to the above structure, and the self-locking rotary driving mechanism is applicable to the present embodiment, for example, the motor and speed reducer combined structure may be directly used for driving.
Further optimizing the above embodiment, as shown in fig. 4, one end of the tube 2021 is provided with a plug 2025, and the plug 2025 may be a threaded plug 2025 adapted to be screwed with the tube 2021, so as to plug the end of the tube 2021. In this embodiment, the plug 2025 is provided with a limiting hole, for example, a hole body is directly formed on the plug 2025, or a limiting pipe is mounted on the plug 2025, the guide rod 2023 is inserted into the limiting hole, the diameter of the limiting hole is the same or approximately the same as that of the guide rod 2023, the guide rod 2023 can be limited axially and radially, along with the continuous screwing of the plug 2025, the pressure applied by the limiting hole to the guide rod 2023 is also greater and greater, and the pressure is finally transmitted to each block 2024, so that the pressure is tightly adhered to the inner wall of the pipe 2021. The structure ensures the fastening effect of the guide rod 2023 as much as possible on the premise of not interfering the rotation movement of the guide rod 2023, can reduce the deformation and other conditions of the guide rod 2023 in the use process, and ensures the blocking effect of the blocking block 2024 on the nozzle 2022.
Example IV
The embodiment of the invention provides an energy-saving and consumption-reducing type cleaning device 2, which can be used in the second embodiment as the belt cleaning device 2.
The energy-saving and consumption-reducing cleaning device 2 comprises a cleaning container 201, wherein a strip running channel is formed in the cleaning container 201, at least one cleaning pipe is respectively arranged above and below the strip running channel, and at least part of the cleaning pipes adopt the liquid spraying pipe 202 provided by the third embodiment.
The cleaning vessel 201 may be a cleaning vessel, a cleaning tank, a cooling tank, or the like.
Generally, a plurality of cleaning tubes are disposed above and below the path of travel of the strip in the direction of travel of the strip, each cleaning tube preferably employing the liquid jet tube 202 described above.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (9)
1. The utility model provides a turbulent flow type pickling device, includes pickling tank, its characterized in that: the pickling tank is internally provided with a plurality of free rollers, the free rollers are used for being in rolling contact with the surface of the strip so as to tear an acid liquor boundary layer on the surface of the strip, and the axes of the free rollers are perpendicular to the running direction of the strip;
The pickling tank is provided with an overflow port, at least one end of the pickling tank is a liquid separating end, the liquid separating end is provided with a bearing dam and a liquid blocking dam, the bearing dam extends upwards from the tank bottom, the liquid blocking dam extends downwards from the tank top,
The top end of the bearing dam extends to be level with the lower end of the strip running channel, the liquid blocking dam is an elastic dam, and the lower end of the liquid blocking dam extends to be level with the upper end of the strip running channel or has a gap of not more than 1mm with the upper end of the strip running channel;
or the distance between the bearing dam and the liquid blocking dam is smaller than the thickness of the strip, and the bearing dam and/or the liquid blocking dam are/is elastic dams, so that the strip can squeeze the elastic dams and pass through the bearing dam and the liquid blocking dam.
2. The turbulent pickling device of claim 1, further comprising: each free roller comprises a plurality of free pressing rollers, and each free pressing roller is sequentially arranged above the strip steel running channel along the strip running direction.
3. A turbulent pickling device as claimed in claim 2, characterized in that: the free press roller comprises a press roller shaft core fixed on the pickling tank and a rolling ring barrel rotatably sleeved on the press roller shaft core.
4. A turbulent pickling device as claimed in claim 3, characterized in that: the inner diameter of the rolling ring cylinder is larger than the diameter of the roller shaft core.
5. The turbulent pickling device of claim 1, further comprising: each free roller comprises a plurality of free carrier rollers, and each free carrier roller is sequentially arranged below the strip steel running channel along the strip steel running direction.
6. The turbulent pickling device of claim 5, further comprising: and a space is reserved between the bottom of the free carrier roller and the bottom of the pickling tank.
7. A turbulent pickling device as claimed in any one of claims 1 to 6 wherein: the side wall of the pickling tank is provided with a plurality of side nozzles for spraying acid liquor.
8. The turbulent pickling device of claim 7 wherein: each side nozzle is positioned in the same horizontal plane with the strip running channel, and the spraying direction of the side nozzle faces to the strip running channel.
9. A strip processing system having an acid cleaning station and a cleaning station, wherein a strip cleaning device is disposed at the cleaning station, characterized in that: a turbulent pickling arrangement as claimed in any one of claims 1 to 8 is arranged at the pickling station.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795259.2A CN110438515B (en) | 2019-08-27 | 2019-08-27 | Turbulent flow type pickling device and strip processing system |
| PCT/CN2019/106456 WO2021035836A1 (en) | 2019-08-27 | 2019-09-18 | Turbulence-type pickling device and strip processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910795259.2A CN110438515B (en) | 2019-08-27 | 2019-08-27 | Turbulent flow type pickling device and strip processing system |
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| Publication Number | Publication Date |
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| CN110438515A CN110438515A (en) | 2019-11-12 |
| CN110438515B true CN110438515B (en) | 2024-05-24 |
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| CN201910795259.2A Active CN110438515B (en) | 2019-08-27 | 2019-08-27 | Turbulent flow type pickling device and strip processing system |
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| CN (1) | CN110438515B (en) |
| WO (1) | WO2021035836A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110387552B (en) * | 2019-08-27 | 2024-04-30 | 中冶南方工程技术有限公司 | Energy-saving environment-friendly pickling device and strip treatment system |
| CN110420922A (en) * | 2019-08-27 | 2019-11-08 | 中冶南方工程技术有限公司 | Sparge pipe, energy-saving type cleaning device and band processing system |
| CN212640622U (en) * | 2020-05-05 | 2021-03-02 | 中冶南方工程技术有限公司 | Pickling bath overflow block |
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| WO2021035836A1 (en) | 2021-03-04 |
| CN110438515A (en) | 2019-11-12 |
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