CN210796645U - Turbulent type pickling device and strip processing system - Google Patents

Abstract

The utility model relates to a turbulent type pickling installation and adopt this turbulent type pickling installation's strip processing system, this turbulent type pickling installation include the descaling bath, a plurality of free rollers have been arranged in the descaling bath, the free roller is used for tearing the acidizing fluid boundary layer on strip surface with strip surface rolling contact, the axis and the strip traffic direction of free roller are perpendicular. The utility model discloses a set up free roller, under the friction of strip motion drives, free roller is rotatory around self axis, can constantly tear the acidizing fluid boundary layer on strip surface, strengthens the turbulent flow of acidizing fluid, improves the intraformational diffusion velocity of hydrogen ion at strip surface boundary, improves the pickling effect effectively.

Description

Turbulent type pickling device and strip processing system

Technical Field

The utility model belongs to the technical field of the strip pickling, concretely relates to turbulent type pickling device and adopt this turbulent type pickling device's strip processing system.

Background

In the field of strip pickling, a pickling device 1 is a key process device. The strip is soaked in the pickling device 1 filled with acid liquor at a certain temperature, and after passing through the pickling device 1 at a certain speed, 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 completely removed at the maximum process speed, the length of the pickling device 1 needs to be designed reasonably 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, the dissipation of heat energy and the discharge amount of acid mist are large, 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 mainstream pickling device 1 is a turbulent flow type shallow slot, as shown in fig. 1, and is characterized in that an inner cover is arranged to fill acid liquid in a relatively closed cavity with shallow depth, and a plurality of andesite or wear-resisting plates are arranged at the bottom of the cavity, so that the running track of a strip material in the pickling device 1 is almost a straight line; in order to ensure that the cavity can be filled with acid liquid all the time, the inlet and the outlet of the cavity are respectively provided with a large spray pipe 101, the acid liquid 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 liquid in the cavity is realized, and a large amount of acid liquid can only flow out from an overflow weir in the middle of the cavity.

The two ends of the turbulent type shallow groove can generate stronger turbulent flow under the high-speed jet flow of the jet pipe 101, but are mainly 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 the liquid has very strong resistance, the flow state of the acid liquid in the middle of the turbulent flow type shallow slot is relatively stable, and the turbulent flow is mainly caused by the movement of the strip material. If the bottom of the turbulent shallow groove adopts andesite, the lower surface of the belt material is easily scratched when certain products with softer texture are produced; if a wear plate is used, debris scraped from the surface of the wear plate by the strip can contaminate the acid solution and clog the nozzles. The turbulent shallow groove is used for liquid sealing of acid liquor by virtue of the large spray pipe 101 at the inlet and the outlet, when products such as silicon steel and the like which are easy to generate impurities to the acid liquor are produced, a spray nozzle on the spray pipe 101 is easy to block, and finally the tank body cannot be filled with the acid liquor along with the reduction of the amount of the sprayed acid liquor, so that the acid washing failure is caused, and defective products are generated; meanwhile, 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 hitting the acid liquor, and because the squeezing roller is arranged in the area and the mist pumping port is required to be arranged, the loss of the acid liquor is large along with the discharge of the large amount of acid mist, and the operation cost of the unit can be increased by treating the acid mist to ensure that the acid mist is discharged after reaching the standard.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a turbulent type pickling device and adopt this turbulent type pickling device's strip processing system can solve prior art's partial defect at least.

The embodiment of the utility model provides a turbulent type pickling device, including the descaling bath, it is used for tearing the free roller of strip surface acidizing fluid boundary layer with strip surface rolling contact to be arranged a plurality of in the descaling bath, the axis and the strip traffic direction of free roller are perpendicular.

In one embodiment, each of the free rollers includes a plurality of free pressing rollers, and each of the free pressing rollers is sequentially arranged above the strip steel running channel along the strip steel running direction.

As one embodiment, the free pressing roll comprises a pressing roll shaft core fixed on the pickling tank and a rolling ring cylinder rotatably sleeved on the pressing roll shaft core.

In one embodiment, the inner diameter of the rolling cylinder is larger than the diameter of the mandrel core.

In one embodiment, each free roller comprises a plurality of free supporting rollers, and each free supporting roller is sequentially arranged below the strip steel running channel along the strip steel running direction.

As an embodiment, a distance is arranged between the bottom of the free supporting roller and the bottom of the pickling tank.

In one embodiment, the side wall of the pickling tank is provided with a plurality of side nozzles for spraying the acid solution.

As one embodiment, each side nozzle is positioned in the same horizontal plane with the strip running channel, and the spraying direction of the side nozzles faces to the strip running channel.

The embodiment of the utility model provides a still relate to a strip processing system, have pickling station and washing station, in belt cleaning device has been arranged to the washing station, in the pickling station is arranged as above turbulent type pickling device.

The embodiment of the utility model provides a following beneficial effect has at least:

the utility model provides a turbulent type pickling plant and strip processing system through setting up free roller, drives under the friction of strip motion, and free roller is rotatory around self axis, can constantly tear the acidizing fluid boundary layer on strip surface, strengthens the turbulent flow of acidizing fluid, improves the hydrogen ion and improves the pickling effect effectively at the intraformational diffusion velocity of strip surface boundary.

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 conventional pickling apparatus provided in the background art;

FIG. 2 is a schematic structural 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 along B-B of fig. 4 at different spray widths.

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. 2 and fig. 3, the embodiment of the present invention provides a turbulent pickling apparatus 1, including a pickling tank 102, a plurality of free rollers are arranged in the pickling tank 102, the free rollers are used for rolling contact with a strip surface to tear an acid liquid boundary layer on the strip surface, and an axis of the free rollers is perpendicular to a strip running direction.

The pickling tank 102 is preferably a shallow tank of the turbulent type as is conventional in the art.

It will be readily understood that the arrangement of the free roller should ensure that it is in rolling contact with the upper surface of the strip, as the skilled person will readily arrange, depending on the particular situation, for example with its bottom end flush with the top end of the path of travel of the strip, or with its top end flush with the bottom end of the path of travel of the strip. Obviously, the axis of the free roller is also generally parallel to the horizontal direction; the free rollers are arranged in parallel.

In the embodiment, the free roller is arranged, and is driven by the friction of the strip to rotate around the axis of the free roller, so that the acid liquid boundary layer on the surface of the strip can be continuously torn, the turbulence of the acid liquid is enhanced, the diffusion speed of hydrogen ions in the boundary layer on the surface of the strip is increased, and the acid washing effect is effectively improved.

As shown in fig. 2 and 3, each of the free rollers includes a plurality of free pressing rollers 107, and each of the free pressing rollers 107 is sequentially arranged above the strip running passage along the strip running direction, i.e., is used for rolling contact with the upper surface of the strip to tear the acid liquid boundary layer on the upper surface of the strip. Further preferably each spaced apart by a pressure roller 107.

In an alternative embodiment, the free press roll 107 includes a roll core fixed to the pickling tank 102 and a rolling ring rotatably sleeved on the roll core, and the roll core and the rolling ring are preferably made of an acid corrosion resistant material with good wear resistance and self-lubricating property. Further preferred structures are: the rolling ring cylinder and the roller shaft core are provided with a gap, namely the inner diameter of the rolling ring cylinder is larger than the diameter of the roller shaft core (preferably slightly larger than the diameter of the roller shaft core), so that the rolling ring cylinder is easier to rotate along with the friction of the strip, and simultaneously, the impact force caused by the shaking of the strip can be buffered.

In one embodiment, as shown in fig. 2 and 3, each free roller comprises a plurality of free supporting rollers 108, and each free supporting roller 108 is sequentially arranged below the running channel of the strip steel along the running direction of the strip steel, namely, is used for rolling contact with the lower surface of the strip steel to tear the acid liquid boundary layer on the lower surface of the strip steel. And more preferably are each spaced apart by an idler 108.

In the embodiment, by arranging the free carrier roller 108, the free carrier roller 108 rotates around the axis thereof under the driving of the friction of the movement of the strip while supporting the strip, so that the acid liquid boundary layer on the lower surface of the strip can be continuously torn, the turbulence of the acid liquid is enhanced, the diffusion speed of hydrogen ions in the boundary layer on the surface of the strip is increased, and the pickling effect is effectively improved. The adoption of andesite supporting strips is avoided, so that the problem of scratching the lower surface of the strips in the operation process is solved.

In an alternative embodiment, the free idler 108 includes an idler core fixed to the pickle tank 102 and a rolling sleeve rotatably mounted on the idler core. The roller core and the rolling sleeve are preferably made of acid corrosion resistant materials with better wear resistance and self-lubricating property.

Further preferably, a space is reserved 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 accumulated locally, and the difficulty of deposition and dredging is reduced.

The number of the free pressing rollers 107 and the number of the free carrier rollers 108 are the same under the condition that the free pressing rollers 107 and the free carrier rollers 108 are arranged at the same time, the free pressing rollers 107 and the free carrier rollers 108 are arranged in a one-to-one correspondence mode, in each pair of the free pressing rollers 107 and the free carrier rollers 108 which are arranged up and down, the free pressing rollers 107 and the free carrier rollers can be opposite up and down, the free pressing rollers can also be arranged in a staggered mode along the running direction of the strip.

Further optimizing the structure of the turbulent pickling apparatus 1, as shown in fig. 2 and 3, the side walls of the pickling tank 102 are provided with a plurality of side nozzles 109 for spraying acid liquid, so that not only can acid liquid be supplied into the pickling tank 102 through each side nozzle 109, but also the acid liquid can be sprayed into the pickling tank through the side nozzles 109 at a high speed, so that the overall turbulence intensity of the acid liquid in the pickling 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 as the strip running channel, and the spraying direction of the side nozzles 109 is towards the strip running channel, so that the effect of improving the overall turbulence intensity of the acid in the bath, especially the turbulence intensity of the acid in the vicinity of the strip, is better.

Further optimizing the structure of the turbulent pickling apparatus 1, the overflow opening 104 is provided on the pickling tank 102, the pickling tank 102 preferably includes a tank body 102 and a tank cover, the tank cover covers the tank body 102 to form a relatively closed cavity for storing acid solution, in one embodiment, the tank cover includes an outer cover 1101 and an inner cover 1102, the inner cover 1102 is press-fitted on an inner cover platform at the top of the tank body 102, so as to provide good sealing performance for the acid solution and the acid mist in the cavity, and the outer cover 1101 can further improve the sealing performance of the turbulent pickling apparatus 1.

Further, a plurality of side wall protection blocks 111 can be arranged on the inner wall of the tank body, for example, each side wall protection block 111 is arranged on the inner cover bearing platform, and the side wall of the tank body can be prevented from being damaged due to deviation of the strip in the running process.

The overflow opening 104 is disposed on the tank body 102, for example, in the middle of the tank body 102 along the length direction of the tank body.

The structure of the turbulent pickling device 1 is further optimized, at least one end of the pickling tank 102 is a liquid separation end 103, the liquid separation end 103 is provided with a supporting dam 1031 and a liquid blocking dam 1032, the supporting dam 1031 extends upwards from the bottom of the tank, the liquid blocking dam 1032 extends downwards from the top of the tank, the supporting dam 1031 and the liquid blocking dam 1032 respectively extend to the vicinity of a strip running channel, and the distance between the two dams can allow a strip to pass through; alternatively, the distance between the support dam 1031 and the liquid blocking dam 1032 is smaller than the thickness of the belt material, and the support dam 1031 and/or the liquid blocking dam 1032 is an elastic dam, so that the belt material can press the elastic dam and pass through between the support dam 1031 and the liquid blocking dam 1032.

In a preferred embodiment, both ends of the pickling tank 102 are provided with liquid isolating ends 103; obviously, the two ends of the pickling tank 102 corresponding thereto here are the two ends of the pickling tank 102 in the strip running direction.

In a preferred embodiment, the supporting dam 1031 serves to support the strip while serving as a dam against the acid, i.e., the top end of the supporting dam 1031 extends to be flush with the lower end of the strip running passage, e.g., the supporting dam 1031 is an abrasion-resistant block adapted to support the strip; the holding dam 1031 also has acid corrosion resistance, and at the same time, the holding dam 1031 also preferably absorbs impact force due to, for example, shaking of the strip or a bad plate shape to some extent, and the wear-resistant block is (for example, made of) a material of the wear-resistant block. In another embodiment, the support dam 1031 does not contact the lower surface of the strip during normal operation, for example, a slight gap is provided between the top end of the support dam 1031 and the lower end of the strip path.

In a preferred embodiment, the bottom end of the dam 1032 is in contact with the upper surface of the strip or has a gap with the upper surface of the strip as small as possible (preferably not larger than 1mm) during normal operation, i.e. the lower end of the dam 1032 extends flush with the upper end of the strip running path or the lower end of the dam 1032 is above and close to the strip running path. In this embodiment, the liquid blocking dam 1032 is preferably an elastic dam, which can better absorb the impact force caused by the shaking and bad shape of the strip while blocking the acid liquid from flowing out of the upper portion of the strip, and can also be adapted to different strip thicknesses. The liquid blocking dam 1032 may be fixed to the inner cap platform, and the upper end thereof may contact the inner cap 1102; preferably removably mounted to the inner cap platform, e.g., clamped or secured by screws, etc.

For the elastic dam, the elastic dam can be a modified rubber block which is resistant to abrasion and acid corrosion; of course, other elastomeric materials may be used, but preferably have acid corrosion resistance.

In the turbulent pickling apparatus 1 provided in this embodiment, the liquid isolating end 103 formed by the supporting dam 1031 and the liquid blocking dam 1032 is arranged, so that a relatively closed cavity convenient for storing acid liquid is formed inside the pickling tank 102, and since the high-speed jet flow is no longer needed to perform liquid sealing on the acid liquid at the two ends of the pickling tank 102, a large amount of acid mist is not generated, thereby reducing the acid consumption and the cost for subsequent acid mist treatment; meanwhile, because no nozzle for liquid sealing is arranged, the adaptability of the pickling tank 102 is greatly enhanced, and the situations that the nozzle is blocked, the pickling tank cannot be filled with acid liquor and pickling failure is caused due to the fact that the impurity content in the acid liquor is high when varieties such as silicon steel are pickled are avoided.

In the above embodiment, a small amount of acid solution still overflows from both ends of the pickling tank 102, and accordingly, 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 isolating end 103, and an acid solution return opening 1051 and a strip running channel are arranged on the transition tank 105. The acid liquor collected in the transition tank 105 can flow out through the acid liquor return opening 1051 for recycling of the turbulent acid washing device 1. The bottom of the transition tank 105 is preferably lower than the top end of the bearing dam 1031, and more preferably, the bottom of the transition tank 105 is lower than the bottom of the pickling tank 102, so that the acid liquid can be conveniently collected and refluxed. Furthermore, an end mist discharge port is also arranged on the transition groove 105 to prevent the acid mist from overflowing from the transition groove 105.

Generally, a wiping roller 106 is respectively arranged on the strip inlet side and the strip outlet side of the pickling tank 102, and for the structure provided with the transition tank 105, the wiping roller 106 on the liquid isolation end 103 side is arranged in the corresponding transition tank 105, so that the occupied area is reduced.

In addition, the lowest point of the bottom of the pickling tank 102 is provided with a communication port, a part of acid liquor is continuously discharged in a small flow for recycling through the communication port in production, and part of impurities deposited at the bottom of the pickling tank 102 can be discharged together with the acid liquor. The lowest point of the bottom of the pickling tank 102 is also provided with a drain port, so that when the unit is temporarily stopped or overhauled and stopped, the acid liquor in the pickling tank 102 can be quickly drained through the drain port. After the unit is stopped, acid liquor is completely drained through the drain port, and after the outer cover 1101, the inner cover 1102 and the free pressing roller 107 are lifted and opened by the cover uncovering machine, the tank can be accessed for maintenance and cleaning operation. The pickling tank 102 is also provided with a water seal tank, discontinuous places of the water seal tank are communicated through a water seal tank communicating pipe, and the water seal tank can provide good sealing performance for acid mist generated by the pickling tank 102.

Example two

The embodiment of the utility model provides a strip processing system has pickling station and washing station, in strip belt cleaning device 2 has been arranged to the washing station, in the pickling station is arranged the turbulent type pickling installation 1 that above-mentioned embodiment provided, and this turbulent type pickling installation 1's concrete structure here is not repeated.

The cleaning station can be located upstream of the pickling station, i.e. the strip is treated by the strip cleaning device 2 and then by the turbulent pickling device 1, for example stainless steel strip; the pickling station can also be located upstream of the cleaning station, for example for the treatment of cold-rolled strip, etc., and will not be described in detail here.

EXAMPLE III

Referring to fig. 4, the present invention provides a liquid spraying tube 202, which includes a tube 2021, and a plurality of nozzles 2022 are sequentially arranged on the tube 2021 along the axial direction of the tube, the arrangement direction of the nozzles 2022 is generally linear and parallel to the axial direction of the tube, the spraying direction of the nozzles 2022 is generally the same, and the nozzles 2022 are preferably uniformly spaced.

As shown in fig. 4, a guide rod 2023 is disposed inside the tube 2021, the guide rod 2023 is axially parallel to the tube and is provided with at least one block 2024 on the guide rod 2023, each block 2024 is matched with one nozzle 2022 and is located on the same radial section of the tube 2021, and the guide rod 2023 is connected with a guide rod driving mechanism for driving the rotation thereof to block or deviate the block 2024 from the corresponding nozzle 2022.

The block 2024 may be mounted to the guide 2023 by a block bracket, which may be understood to be disposed radially along the tube 2021. The guide rod driving mechanism drives the guide rod 2023 to rotate around its own axis, and can drive each block 2024 to rotate along with the rotation, i.e., the block 2024 rotates around the guide rod 2023.

The guide rod 2023 is preferably disposed coaxially with the tube 2021, and the block 2024 is always in contact with the tube wall during the rotation of the guide rod 2023. In another embodiment, the guide rod 2023 is eccentrically arranged, that is, the axis of the guide rod is deviated from the axis of the tube body and is located on the side of the axis of the tube body close to each nozzle 2022, the distance between the blocking surface of the block 2024 and the axis of the guide rod is equal to the distance between the axis of the guide rod and the inlet of the nozzle 2022, during the rotation of each block 2024 along with the guide rod 2023, only when the block rotates to be opposite to the corresponding nozzle 2022, the block will contact the inner wall of the tube body 2021 to block the corresponding nozzle 2022, and at the rest of the time, the block 2024 will not contact the inner wall of the tube body 2021, so as to reduce the abrasion of the block 2024 and prevent the friction force applied to the block 2024 from being continuously transmitted to the guide rod 2023 to affect the service life of the guide rod 202.

Wherein the block 2024 is preferably a rubber block; the blocking surface of the blocking block 2024 is preferably an arc surface having the same curvature as the inner wall of the pipe body 2021, and in the above-mentioned structure in which the guide rod 2023 is eccentrically arranged, the blocking surface of the blocking block 2024 may be an arc surface adapted to be inscribed in the pipe wall of the nozzle 2022, so as to ensure the blocking effect on the liquid inlet of the nozzle 2022. Further preferably, as shown in fig. 5-7, the central part of the blocking surface of the block 2024 is provided with a groove, so that the friction between the block 2024 and the tube wall can be reduced to some extent.

In the liquid spraying pipe 202, a part of the nozzles 2022 may be disposed without the block 2024, that is, the part of the nozzles 2022 may be kept in a normal spraying/normal opening state, and the other nozzles 2022 may be controlled to open and close by blocking or not blocking the corresponding block 2024, so that a normal spraying area and a spraying adjustment area are correspondingly formed on the pipe 2021, and further preferably, the normal spraying area is located in the middle of the pipe 2021, and two spraying adjustment areas are disposed on the left and right sides of the normal spraying area, that is, the pipe 2021 includes a middle normal spraying area and two spraying adjustment areas disposed on the two sides of the middle normal spraying area, and each block 2024 is disposed in the two spraying adjustment areas. The liquid spraying pipe 202 with the structure can be suitable for engineering applications such as cleaning and cooling of strips, and further preferably, the two spraying adjusting areas are symmetrically arranged relative to the middle normal spraying area, so that the uniformity of treatment such as cleaning/cooling of the strips is ensured.

It can be understood that when the middle normal spray area comprises an even number of nozzles 2022, the even number of nozzles 2022 are symmetrically arranged relative to the center line of the strip processing unit, and when the middle normal spray area comprises an odd number of nozzles 2022, one of the nozzles 2022 is located on the center line of the strip processing unit, and the other nozzles 2022 are symmetrically arranged relative to the center line of the strip processing unit.

In the spray adjusting area, the number of the blocks configured for each nozzle 2022 may be the same, or configured differently; the nozzles 2022 may be configured with the same number of blocks, and the arrangement of the blocks 2024 may be different, for example, two adjacent nozzles 2022 may be configured with the same number of blocks but with the blocks 2024 arranged in a staggered manner, so that the two nozzles 2022 alternately spray liquid.

In a preferred embodiment, each of said spray conditioning zones comprises a plurality of spray conditioning sections, each spray conditioning section being provided with at least one spray nozzle 2022; in each spraying adjustment section, the number and the layout of the plugging blocks matched with each nozzle 2022 are the same, and the liquid spraying time of each nozzle 2022 in the spraying adjustment section is the same, namely, liquid is sprayed simultaneously or plugged simultaneously; in two adjacent spray adjusting sections, the number of the blocks matched with the single spray nozzle 2022 of one spray adjusting section is different from the number of the blocks matched with the single spray nozzle 2022 of the other spray adjusting section. Based on the structure, the sectional liquid spraying control of the liquid spraying pipe 202 can be realized, when the liquid spraying of one spraying adjusting section works, the nozzle 2022 of the other spraying adjusting section can be blocked to stop the liquid spraying, so that the spraying coverage of the liquid spraying pipe 202 is adjustable.

Preferably, when a plurality of blocks 2024 are matched with a single nozzle 2022, 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 nozzle 2022 may be disposed annularly at 360 ° with respect to the guide 2023, or disposed in a fan shape with respect to the guide 2023.

In a further preferred embodiment, each of the blocks 2024 of each spray conditioning zone comprises at least one axial block row, the number of blocks of the axial block row is the same as the number of nozzles 2022 of the spray conditioning zone and the arrangement direction of the blocks 2024 is parallel to the axis of the pipe body. That is, the axial block row includes a plurality of blocks 2024, and the blocks 2024 included therein are disposed in one-to-one correspondence with the nozzles 2022 of the shower adjustment area, and the direction of the linear arrangement of the blocks 2024 of the axial block row is parallel to the axis of the pipe body, so that the axial block row can simultaneously block the nozzles 2022 of the shower adjustment area, that is, the shower adjustment area is closed.

Further, at least two axial plugging block rows in the two spraying regulation areas are collinear, namely, one axial plugging block row of one spraying regulation area is collinear with one axial plugging block row of the other spraying regulation area, so that when the guide rod 2023 rotates, each nozzle 2022 of the two spraying regulation areas can be plugged simultaneously, and only the rest middle normal spraying area works to obtain the minimum spraying width.

In a further preferred embodiment, in each spray regulation zone, the number of the blocks matched with the single spray nozzle 2022 of each spray regulation section is increased in sequence from the middle constant spray zone to the end of the corresponding side pipe body 2021. For example, from the middle normal spray zone to the end of the corresponding side pipe 2021, the spray adjustment zone includes a first spray adjustment section and a second spray adjustment section that are sequentially arranged, an nth spray adjustment section (N is greater than 2), the number of the blocks matched with each nozzle 2022 in the first spray adjustment section is 1, the number of the blocks matched with each nozzle 2022 in the second spray adjustment section is 2, the process is repeated by analogy, and the number of the blocks matched with each nozzle 2022 in the nth spray adjustment section is N. Based on the above embodiment, the probability of closing the nozzles 2022 gradually increases from the middle normal spray region toward the end of the corresponding side pipe 2021, and the spray coverage of the liquid spray pipe 202 can be gradually reduced.

Further, in the above embodiment, in each spray regulation area, there is one of the above axial block rows, and the axial block row is used as a reference row; in each block 2024 matched to each nozzle 2022, each adjacent two blocks 2024 have a central angle θ with respect to the guide 2023, that is, are sequentially arranged with the same arc length pitch starting from the reference column. Then, each nozzle 2022 corresponding to the reference column block is used as an initial position, after the guide rod 2023 rotates by θ, the first spraying adjustment section is put into operation, after the guide rod 2023 rotates by 2 θ, the first spraying adjustment section and the second spraying adjustment section are put into operation, and after that, when the guide rod 2023 rotates by θ, one spraying adjustment section is put into operation to realize the gradual increase of the spraying width of the liquid spraying pipe 202, and when the guide rod 2023 rotates by θ, the reverse operation is carried out to realize the gradual decrease of the spraying width of the liquid spraying pipe 202.

In the exemplary embodiment shown in fig. 4, the spray conditioning zone comprises two spray conditioning sections, each having a spray nozzle 2022, wherein the spray nozzles 2022 in the first spray conditioning section are assigned one block 2024, and the spray nozzles 2022 in the second spray conditioning section are assigned two blocks 2024, the two blocks 2024 being at an angle of 90 ° with respect to the center of the guide 2023. Fig. 5 corresponds to the case where the object to be cleaned has the widest specification, and each nozzle 2022 is in an open state; fig. 6 corresponds to the case where the object to be cleaned is of the second-order width, in which the nozzles 2022 in the first spray regulation section are in the open state and the nozzles 2022 in the second spray regulation section are in the closed state; fig. 7 corresponds to the case where the object to be cleaned has the narrowest specification, and the nozzles 2022 in the first and second shower adjustment stages are both in the closed state. Obviously, when the number of the shower adjusting sections is increased correspondingly, the width specification of the object to be cleaned to which the liquid ejecting pipe 202 is applied is widened correspondingly.

Continuing with the structure of the liquid 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 used for male-female assembly, and a positioning pin for locking and assembling the two quick connectors together, where one quick connector is fixed to the guide rod 2023, and the other quick connector is fixed to one end of the tube 2021, the male-female quick connector matching structure is available in the market, and the detailed structure thereof is not described herein.

Of course, the guide bar driving mechanism is not limited to the above-described structure, and the self-locking rotation driving mechanism is applicable to the present embodiment, and for example, the motor + reducer combination structure may be directly used for driving.

Further to the above embodiment, as shown in fig. 4, a pipe body 2021 is provided with a plug 2025 at one end, and the plug 2025 may be a threaded plug 2025 adapted to be threadedly fitted with the pipe body 2021 for plugging the end of the pipe body 2021. In this embodiment, the plug 2025 is provided with a limiting hole, for example, a hole body directly formed on the plug 2025, or a limiting tube installed on the plug 2025, the guide rod 2023 is inserted into the limiting hole, the diameter of the limiting hole is the same as or substantially the same as that of the guide rod 2023, the guide rod 2023 can be axially and radially limited, and with the continuous tightening of the plug 2025, the pressure applied to the guide rod 2023 by the limiting hole is increased, and the pressure is finally transmitted to each block 2024, so that the block is tightly attached to the inner wall of the tube 2021. The structure ensures the fastening effect of the guide rod 2023 as much as possible on the premise of not hindering the rotation of the guide rod 2023, can reduce the deformation and other conditions of the guide rod 2023 in the using process, and ensures the blocking effect of the blocking block 2024 on the nozzle 2022.

Example four

The embodiment of the utility model provides an energy saving and consumption reduction type belt cleaning device 2 can be used to among the above-mentioned embodiment two, as strip belt cleaning device 2 wherein.

The energy-saving and consumption-reducing cleaning device 2 comprises a cleaning container 201, a strip running channel is formed in the cleaning container 201, at least one cleaning pipe is arranged above and below the strip running channel respectively, 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 tank, a cooling tank, or the like.

Generally, a plurality of cleaning pipes are provided above and below the tape running path in the tape running direction, and each cleaning pipe preferably employs the above-described liquid ejecting pipe 202.

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 turbulent type pickling device comprises a pickling tank and is characterized in that: a plurality of free rollers for rolling contact with the surface of the strip to tear the acid liquid boundary layer on the surface of the strip are arranged in the pickling tank, and the axes of the free rollers are perpendicular to the running direction of the strip.

2. The turbulent pickling apparatus as recited in claim 1 wherein: 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 running direction of the strip steel.

3. The turbulent pickling apparatus as recited in claim 2 wherein: the free press roll comprises a press roll shaft core fixed on the pickling tank and a rolling ring cylinder rotatably sleeved on the press roll shaft core.

4. The turbulent pickling apparatus as recited in claim 3 wherein: the inner diameter of the rolling ring cylinder is larger than the diameter of the compression roller shaft core.

5. The turbulent pickling apparatus as recited in claim 1 wherein: 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 apparatus as recited in claim 5 wherein: and a space is reserved between the bottom of the free carrier roller and the bottom of the pickling tank.

7. The turbulent pickling apparatus as recited 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 apparatus as recited in claim 7 wherein: each side nozzle and the strip material running channel are positioned in the same horizontal plane, and the spraying direction of the side nozzles faces to the strip material running channel.

9. A strip processing system has a pickling station and a cleaning station, in which a strip cleaning device is arranged, characterized in that: a turbulent pickling device according to any one of claims 1 to 8 is arranged at the pickling station.

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