WO2021035837A1

WO2021035837A1 - Energy-saving and environment-friendly pickling device and strip treatment system

Info

Publication number: WO2021035837A1
Application number: PCT/CN2019/106457
Authority: WO
Inventors: 黎浩; 廖砚林; 梁芳; 况群意; 李素珍
Original assignee: 中冶南方工程技术有限公司
Priority date: 2019-08-27
Filing date: 2019-09-18
Publication date: 2021-03-04
Also published as: CN110387552A; CN110387552B

Abstract

An energy-saving and environment-friendly pickling device and a strip treatment system using the energy-saving and environment-friendly pickling device. The pickling device comprises a pickling tank (102); at least one end of the pickling tank (102) is a liquid isolation end (103), the liquid isolation 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) respectively extend to a position near a strip moving channel, and the strip can pass through a gap between the two dams; or, the gap between the bearing dam (1031) and the liquid blocking dam (1032) is smaller than the thickness of the strip, and the bearing dam (1031) and/or the liquid blocking dam (1032) are/is elastic dams. By providing the liquid isolation end composed of the bearing dam (1031) and the liquid blocking dam (1032), high-speed jet flow does not need to be used for performing liquid sealing on acid liquid at the two ends of the pickling tank (102) any more, a large amount of acid fog cannot be generated, and acid consumption and the cost of subsequent acid fog treatment are reduced.

Description

Energy-saving and environment-friendly pickling device and strip processing system

Technical field

The invention belongs to the technical field of strip pickling, and specifically relates to an energy-saving and environmentally-friendly pickling device and a strip processing system adopting the energy-saving and environmentally-friendly pickling device.

Background technique

In the field of strip pickling, pickling device 1 is the key process equipment. The strip is immersed in a pickling device 1 filled with acid at a certain temperature, and after passing through the pickling device 1 at a certain speed, the oxide scale on the surface of the strip is removed under the chemical action of the acid. In order to ensure that the oxide scale on the surface of the strip can be completely removed at the maximum process speed, it is necessary to design a reasonable length of the pickling device 1 according to the required pickling time. The length of the pickling device 1 is not only directly related to the investment of the plant and the stability of the unit operation, but also affects the energy consumption in the pickling process. If the pickling device 1 is long, the heat energy dissipation and acid mist emission are large. Therefore, it is necessary to improve the pickling efficiency of the pickling device 1 as much as possible and shorten the length of the pickling device 1.

The current mainstream pickling device 1 is a turbulent shallow tank, as shown in Figure 1, its feature is that the inner cover is set to fill the relatively closed cavity with a relatively shallow depth, and there are several andesites at the bottom of the cavity. Or wear-resistant plates, so that the strip's running track in the pickling device 1 is almost a straight line; in order to ensure that the cavity is always full of acid, a large nozzle 101 is set at the inlet and outlet of the cavity. The pressurized acid liquid is converted into a high-speed jet through the nozzle in the nozzle 101, and continuously enters the cavity from the inlet and outlet of the cavity, thus realizing the liquid sealing of the acid liquid in the cavity, so that a large amount of acid liquid can only It flows out from the overflow weir in the middle of the cavity.

The two ends of the turbulent shallow groove can produce strong turbulence under the high-speed jet of the nozzle 101, but it is mainly concentrated on the upper part of the strip, because the ejected acid is blocked by the strip and cannot enter effectively The lower part of the strip. Due to the strong resistance of the liquid, the flow of the acid in the middle of the turbulent shallow groove is relatively stable, and the turbulence is mainly caused by the movement of the strip itself. If the bottom of the turbulent shallow groove is made of andesite, it is easy to scratch the lower surface of the strip when producing some soft products; if the wear plate is used, the strip will be scraped from the surface of the wear plate. It will contaminate the acid and block the nozzle. The turbulent shallow groove relies on the large nozzle 101 at the inlet and outlet to seal the acid liquid. When producing products such as silicon steel that are prone to impurity in the acid liquid, the nozzle on the nozzle 101 is prone to blockage. When the amount of acid liquid decreases, the tank body will not be filled with acid liquid in the end, which will cause pickling failure and produce defective products. At the same time, the high-speed jet continuously ejected from the large nozzle 101 entering and exiting will be damaged during the process of hitting the acid liquid. A large amount of acid mist is generated. Because the area is equipped with a squeezing roller, a mist extraction port must be set. Therefore, as a large amount of acid mist is discharged, not only will the loss of acid liquid be large, but the acid mist will be discharged after it reaches the standard. Increase the operating cost of the unit.

Summary of the invention

The embodiment of the present invention relates to an energy-saving and environmentally-friendly pickling device and a strip processing system adopting the energy-saving and environmentally-friendly pickling device, which can at least solve some of the defects of the prior art.

The embodiment of the present invention relates to an energy-saving and environmentally-friendly pickling device, including a pickling tank, the pickling tank is provided with an overflow, at least one end of the pickling tank is a liquid barrier end, and the liquid barrier end A supporting dam and a liquid blocking dam are provided, the supporting dam extends upward from the bottom of the groove, and the liquid blocking dam extends downward from the top of the groove,

The supporting dam and the liquid blocking dam respectively extend to the vicinity of the strip running channel, and the distance between the two dams can allow the strip to pass through;

Alternatively, the distance between the supporting dam and the liquid blocking dam is less than the thickness of the strip, and the supporting dam and/or the liquid blocking dam are elastic dams, so that the strip can squeeze the elastic dam and move from the Pass between the supporting dam and the liquid blocking dam.

As one of the embodiments, the top end of the supporting dam extends to be flush with the lower end of the strip running channel.

As one of the embodiments, the supporting dam is a wear-resistant block suitable for supporting strips.

As one of the embodiments, the lower end of the liquid barrier dam extends to be flush with the upper end of the strip running channel, or the lower end of the liquid barrier dam is located on the strip running channel and close to the strip running channel.

As one of the embodiments, the liquid blocking dam is an elastic dam.

As one of the embodiments, the liquid blocking dam is a modified rubber block with wear resistance and acid corrosion resistance.

As one of the embodiments, the outer side of the liquid barrier end is connected with a transition tank for collecting acid liquid flowing out of the end, and the acid liquid return port and a strip running channel are provided on the transition tank.

As one of the embodiments, the strip inlet side and the strip outlet side of the pickling tank are respectively provided with squeezing rollers, and the squeezing rollers on the side of the liquid barrier end are arranged in the corresponding transition grooves.

As one of the embodiments, a plurality of free pressure rollers for rolling contact with the upper surface of the strip are sequentially arranged in the pickling tank along the strip running direction, and the axis of the free pressure rollers is perpendicular to the strip running direction.

As one of the embodiments, the free pressing roller includes a pressing roller shaft core fixed on the pickling tank and a rolling ring tube rotatably sleeved on the pressing roller shaft core.

As one of the embodiments, the inner diameter of the rolling ring barrel is larger than the diameter of the shaft core of the pressure roller.

As one of the embodiments, a plurality of free rollers for rolling contact with the lower surface of the strip are sequentially arranged in the pickling tank along the strip running direction, and the axis of the free rollers is perpendicular to the strip running direction.

As one of the embodiments, there is a distance between the bottom of the free roller and the bottom of the pickling tank.

As one of the embodiments, the side wall of the pickling tank is provided with a plurality of side nozzles for spraying acid liquid.

As one of the embodiments, each of the side nozzles and the strip running channel are located in the same horizontal plane, and the spray direction of the side nozzles is toward the strip running channel.

The embodiment of the present invention also relates to a strip processing system, which has a pickling station and a cleaning station. A strip cleaning device is arranged at the cleaning station, and the energy saving as described above is arranged at the pickling station. Environmentally friendly pickling device.

The embodiments of the present invention have at least the following beneficial effects:

The energy-saving and environmentally friendly pickling device and strip processing system provided by the present invention are provided with a liquid barrier end composed of a supporting dam and a liquid blocking dam, so that a relatively closed cavity is formed in the pickling tank to facilitate acid storage. It is no longer necessary to use high-speed jets to liquid seal the acid liquid at both ends of the pickling tank, and a large amount of acid mist will not be generated, thereby reducing acid consumption and the cost of subsequent acid mist treatment; at the same time, because there is no liquid sealing The adaptability of the nozzle and the pickling tank will be greatly enhanced to avoid the problem that when pickling products such as silicon steel, the high impurity content in the acid solution will cause the nozzle to block, and the acid tank will not be full of acid solution and cause pickling failure. Happening.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a schematic diagram of the structure of an existing pickling device provided by the background art;

2 is a schematic structural diagram of an energy-saving and environmentally-friendly pickling device provided by Embodiment 1 of the present invention;

3 is a schematic plan view of an energy-saving and environmentally-friendly pickling device provided by Embodiment 1 of the present invention;

4 is a schematic plan view of a cleaning device provided by Embodiment 4 of the present invention;

Figures 5-7 are cross-sectional views taken along A-A and along B-B in Figure 4 under different spray widths.

detailed description

The following describes the technical solutions in the embodiments of the present invention clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Example one

2 and 3, the embodiment of the present invention provides an energy-saving and environmentally friendly pickling device 1, including a pickling tank 102, the pickling tank 102 is provided with an overflow 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 form a relatively closed cavity for storing acid liquid. In one embodiment, the tank cover includes an outer cover 1101 and an inner cover 1102. The inner cover 1102 is pressed onto the inner cover bearing platform at the top of the tank body 102 to provide a good seal to the acid liquid and acid mist in the cavity. The outer cover 1101 can further improve the sealing performance of the pickling device 1.

Further, a number of side wall protection blocks 111 can be arranged on the inner wall of the tank. For example, each side wall protection block 111 is arranged on the above-mentioned inner cover bearing platform, etc., which can prevent the strip from deviating and opposing the side wall of the tank body during operation. Cause damage.

The above-mentioned overflow port 104 is disposed on the tank body 102, for example, it is disposed in the middle of the tank body 102 along the length direction of the tank body.

To further optimize the structure of the above-mentioned pickling device 1, at least one end of the pickling tank 102 is a liquid barrier end 103, and the liquid barrier end 103 is provided with a supporting dam 1031 and a liquid blocking dam 1032, and the supporting dam 1031 Extending upward from the bottom of the groove, the liquid blocking dam 1032 extends downward from the top of the groove, the supporting dam 1031 and the liquid blocking dam 1032 respectively extend to the vicinity of the strip running channel, and the distance between the two dams can accommodate The strip passes; or, the distance between the supporting dam 1031 and the liquid blocking dam 1032 is less than the thickness of the strip, the supporting dam 1031 and/or the liquid blocking dam 1032 are elastic dams, so that the strip can The elastic dam is squeezed and passes between the supporting dam 1031 and the liquid blocking dam 1032.

In a preferred embodiment, both ends of the above-mentioned pickling tank 102 are set as liquid barrier ends 103; obviously, the two ends of the corresponding pickling tank 102 here are the pickling tank 102 in the strip running direction. On the two ends.

In a preferred embodiment, the above-mentioned supporting dam 1031 serves as a dam to block the acid liquid and at the same time is used to support the strip, that is, the top of the supporting dam 1031 extends to be flush with the lower end of the strip running channel, for example, The supporting dam 1031 is a wear-resistant block suitable for supporting strips; in addition, the supporting dam 1031 also has acid corrosion resistance. At the same time, the supporting dam 1031 preferably can absorb the vibration and vibration caused by the belt to a certain extent. The impact force caused by poor plate shape, for example, the above-mentioned wear-resistant block is (for example, the material of the wear-resistant block). In another embodiment, during normal operation, the aforementioned supporting dam 1031 does not contact the lower surface of the strip. For example, there is a slight gap between the top end of the supporting dam 1031 and the lower end of the strip running channel.

In a preferred embodiment, in normal operation, the bottom end of the liquid blocking dam 1032 is just in contact with the upper surface of the strip or there is a gap between the upper surface of the strip. The smaller the gap, the better (preferably not greater than 1 mm), that is The lower end of the liquid blocking dam 1032 extends to be flush with the upper end of the strip running channel, or the lower end of the liquid blocking 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 still preferably an elastic dam. On the one hand, it can prevent the acid liquid from flowing out of the upper part of the strip, and at the same time, it can better absorb the strip due to the vibration of the strip and the poor shape of the strip. The impact force, on the other hand, can also be adapted to different strip thicknesses. The liquid blocking dam 1032 may be fixed on the inner cover bearing platform, and its upper end is in contact with the inner cover 1102; preferably, it can be detachably installed on the inner cover bearing platform, such as being fastened or fixed by screws.

For the above-mentioned elastic dam, it can be a modified rubber block that is wear-resistant and acid-corrosive; of course, other elastic materials can also be used, but it preferably has acid-corrosion resistance.

The energy-saving and environmentally-friendly pickling device 1 provided in this embodiment is provided with a liquid barrier end 103 composed of a supporting dam 1031 and a liquid blocking dam 1032, so that a relatively closed cavity is formed in the pickling tank 102 to facilitate acid storage. Since it is no longer necessary to use high-speed jets to liquid seal the acid liquid at both ends of the pickling tank 102, a large amount of acid mist will not be generated, thereby reducing acid consumption and the cost of subsequent acid mist treatment; at the same time, because it is not used for liquid Sealed nozzles, the adaptability of the pickling tank 102 will be greatly enhanced, to avoid that when pickling products such as silicon steel, the high impurity content in the acid solution will cause the nozzle to block, and the acid tank will not be full of acid solution and cause acid Failure to wash.

The pickling tank 102 is preferably a turbulent shallow tank, and the relatively closed cavity formed by the enclosure corresponds to a narrow cavity.

In the above embodiment, there is still a small amount of acid liquid overflowing from both ends of the pickling tank 102. Correspondingly, as shown in Figures 2 and 3, the outer side of the liquid barrier end 103 is connected with a device for collecting the acid liquid flowing out of the end. The transition tank 105 is provided with an acid return port 1051 and a strip running channel. The acid liquid collected in the transition tank 105 can flow out through the acid liquid return port 1051 for recycling use of the pickling device 1. Among them, the bottom of the transition tank 105 should be lower than the top of the supporting dam 1031, and it is more preferable that the bottom of the transition tank 105 is lower than the bottom of the pickling tank 102 to facilitate the collection and return of acid. Furthermore, the transition groove 105 is also provided with an end mist discharge port to prevent acid mist from overflowing from the transition groove 105.

Generally, the strip inlet side and strip outlet side of the pickling tank 102 are respectively provided with squeezing rollers 106. For the above-mentioned structure provided with the transition groove 105, the squeezing roller 106 on the side of the liquid barrier end 103 The roller 106 is arranged in the corresponding transition groove 105 to reduce the occupation of space.

To further optimize the structure of the above-mentioned pickling device 1, as shown in Figures 2 and 3, the side wall of the pickling tank 102 is provided with a plurality of side nozzles 109 for spraying acid liquid. The tank 102 is filled with acid liquid, and the acid liquid is sprayed into the tank with a high-speed jet through the side nozzle 109, which can significantly increase the overall turbulence intensity of the acid liquid in the tank and improve the pickling effect. Wherein, preferably, a plurality of side nozzles 109 are arranged on both sides of the pickling tank 102; in a further preferred embodiment, as shown in FIG. 2 and FIG. 3, each of the side nozzles 109 is located in the same strip running channel. In the horizontal plane, the spray direction of the side nozzle 109 faces the strip running channel, which improves the overall turbulence intensity of the acid in the tank, especially the acid turbulence near the strip has a better effect.

To further optimize the structure of the above-mentioned pickling device 1, as shown in Figure 2, a plurality of free pressing rollers 107 for rolling contact with the upper surface of the strip are arranged in the pickling tank 102 along the running direction of the strip. The axis of the roller 107 is perpendicular to the running direction of the strip. It is easy to understand that the arrangement of the free pressing roller 107 should ensure that it can roll in contact with the upper surface of the strip, which is easily arranged by those skilled in the art according to the specific situation, for example, its bottom end is flush with the top of the strip running channel. Obviously, the axis of the above-mentioned free pressing roller 107 is generally parallel to the horizontal direction; each of the pressing rollers 107 is arranged in parallel, and it is further preferred that each of the pressing rollers 107 is spaced apart. In this embodiment, by setting the free press roller 107, the free press roller 107 rotates around its own axis under the frictional movement of the strip, which can continuously tear the acid boundary layer on the upper surface of the strip and strengthen the turbulence of the acid. , Improve the diffusion rate of hydrogen ions in the boundary layer of the strip surface, effectively improve the pickling effect.

In an optional embodiment, the above-mentioned free pressing roller 107 includes a pressing roller shaft core fixed on the pickling tank 102 and a rolling ring tube rotatably sleeved on the pressing roller shaft core. And the rolling ring barrel are preferably made of acid-resistant materials with good wear resistance and self-lubricating properties. A further preferred structure is: there is a gap between the rolling ring barrel and the roller shaft core, that is, the inner diameter of the rolling ring barrel is larger than the diameter of the pressure roller shaft core (preferably slightly larger), so that the rolling ring barrel is easier to rotate with the friction of the strip. At the same time, it can cushion the impact brought by the jitter of the strip.

To further optimize the structure of the above-mentioned pickling device 1, as shown in Figures 2 and 3, a plurality of free rollers 108 for rolling contact with the lower surface of the strip are arranged in the pickling tank 102 in sequence along the running direction of the strip, so The axis of the free roller 108 is perpendicular to the running direction of the strip. It is easy to understand that the arrangement of the free idler 108 should ensure that it can roll in contact with the lower surface of the strip, which can be easily arranged by those skilled in the art according to specific conditions, for example, its top end is flush with the bottom end of the strip running channel. Obviously, the axis of the aforementioned free rollers 108 is generally parallel to the horizontal direction; each of the support rollers 108 is arranged in parallel, and it is further preferred that each of the support rollers 108 is spaced apart. In this embodiment, by setting the free idler 108, while supporting the strip, the free idler 108 rotates around its own axis under the frictional drive of the movement of the strip, which can continuously tear the acid boundary layer on the lower surface of the strip. , Strengthen the turbulence of the acid solution, increase the diffusion speed of hydrogen ions in the boundary layer of the strip surface, and effectively improve the pickling effect. Since the use of andesite to support the strip is avoided, the problem of scratches on the lower surface of the strip during operation is solved.

In an optional embodiment, the aforementioned free idler 108 includes an idler shaft core fixed on the pickling tank 102 and a rolling sleeve rotatably sleeved on the idler shaft core. The roller shaft core and the rolling sleeve are preferably made of acid and corrosion resistant materials with good wear resistance and self-lubricating properties.

Further preferably, there is a distance between the bottom of the free roller 108 and the bottom of the pickling tank 102 (the bottom of the pickling tank 102) to ensure the integrity of the slope of the bottom plate, so that insoluble deposits do not accumulate locally, which reduces deposition and cleaning. Difficulty.

Among them, for the case where the free pressing roller 107 and the free supporting roller 108 are provided at the same time, the free pressing rollers 107 and the free supporting rollers 108 can be the same in number, and are arranged in one-to-one correspondence. Each pair of the free pressing rollers 107 and free supporting rollers are arranged up and down. In 108, the two can face up and down, or they can be arranged staggered along the running direction of the strip, but it is advisable to arrange the two adjacently to ensure the smooth running of the strip.

In addition, the lowest point at the bottom of the pickling tank 102 is provided with a communication port. During production, part of the acid liquid is continuously discharged at a small flow through the communication port for recycling. Part of the impurities deposited on the bottom of the pickling tank 102 will be discharged together with the acid liquid. The lowest point at the bottom of the pickling tank 102 is also provided with an emptying port. When the unit is temporarily shut down or overhauled, the acid liquid in the pickling tank 102 can be quickly emptied through the emptying port. When the unit is stopped, the acid is completely drained through the emptying port, and then the outer cover 1101, the inner cover 1102 and the free pressure roller 107 are lifted and opened by the uncovering machine, and then the tank can be entered for maintenance and cleaning operations. . The pickling tank 102 is also provided with a water-sealing tank, and the discontinuous part of the water-sealing tank is connected through the water-sealing tank communication pipe. The water-sealing tank can provide better sealing performance for the acid mist generated by the pickling tank 102.

Example two

The embodiment of the present invention provides a strip processing system, which has a pickling station and a cleaning station. The strip cleaning device 2 is arranged at the cleaning station, and the above-mentioned embodiment 1 is arranged at the pickling station. The energy-saving and environmentally-friendly pickling device 1 is provided. The specific structure of the energy-saving and environmentally-friendly pickling device 1 will not be repeated here.

The cleaning station can be located upstream of the pickling station, that is, the strip is processed by the strip cleaning device 2 and then processed by the pickling device 1, such as the treatment of stainless steel strip; the pickling station can also be It is located upstream of the cleaning station, such as the processing of some cold-rolled strips, etc., which will not be detailed here.

Example three

As shown in Fig. 4, an embodiment of the present invention provides a liquid spray pipe 202, which includes a pipe body 2021. A plurality of nozzles 2022 are sequentially arranged on the pipe body 2021 along the axial direction of the pipe body. The arrangement direction of each nozzle 2022 is generally a straight line. Arranged and parallel to the axial direction of the tube body, the spraying directions of the nozzles 2022 are generally the same, and the nozzles 2022 are preferably arranged at even intervals.

As shown in Figure 4, the pipe body 2021 is provided with a guide rod 2023, the guide rod 2023 is axially parallel to the pipe body and at least one blocking block 2024 is provided on the guide rod 2023, and each of the blocking blocks 2023 is The block 2024 is matched with a nozzle 2022 and the two are located on the same radial cross section of the tube body 2021. The guide rod 2023 is connected to drive it to rotate so that the blocking block 2024 blocks or deviates from the corresponding nozzle 2022. Guide rod drive mechanism.

The above-mentioned blocking block 2024 can be installed on the guide rod 2023 through a blocking block bracket. It is understandable that the blocking block bracket is arranged radially along the tube body 2021. The above-mentioned guide rod driving mechanism drives the guide rod 2023 to rotate around its own axis, which can drive each blocking block 2024 to rotate accordingly, that is, the blocking block 2024 rotates around the guide rod 2023.

Wherein, the above-mentioned guide rod 2023 is preferably arranged coaxially with the tube body 2021, and the blocking block 2024 is always in contact with the tube wall during the rotation of the guide rod 2023. In another embodiment, the above-mentioned guide rod 2023 is eccentrically arranged, that is, the guide rod axis is deviated from the pipe body axis and is located on the side of the pipe body axis close to each nozzle 2022, then the blocking surface of the blocking block 2024 and the guide rod The distance between the axes is equal to the distance between the guide rod axis and the inlet of the nozzle 2022. When each block 2024 rotates with the guide rod 2023, it will only contact the inner wall of the tube body 2021 when it rotates to face the corresponding nozzle 2022. Therefore, the corresponding nozzle 2022 is blocked. At other times, the blocking block 2024 does not contact the inner wall of the pipe body 2021, thereby reducing the wear of the blocking block 2024 and preventing the frictional force of the blocking block 2024 from being continuously transmitted to the guide rod 2023 and affecting the guide rod 2023. The service life of the rod 2023.

Among them, the above-mentioned blocking block 2024 is preferably a rubber block; the blocking surface of the blocking block 2024 is preferably an arc-shaped surface with the same curvature as the inner wall of the pipe body 2021. In the above-mentioned structure in which the guide rod 2023 is eccentrically arranged, a blocking block may be provided The plugging surface of 2024 is an arc-shaped surface that is adapted to be inscribed with the pipe wall at the nozzle 2022, which can ensure the plugging effect of the liquid inlet of the nozzle 2022. Further preferably, as shown in FIGS. 5-7, a groove is provided in the middle of the blocking surface of the blocking block 2024, which can reduce the friction between the blocking block 2024 and the pipe wall to a certain extent.

In the above-mentioned spray pipe 202, it is possible to set some nozzles 2022 without blocking block 2024, that is, this part of the nozzles 2022 can maintain the normal spray/normally open state, and the remaining nozzles 2022 can be blocked or unblocked by the corresponding blocking blocks 2024. The opening and closing adjustment control is realized by blocking, corresponding to the formation of a normal spray area and a spray adjustment area on the pipe body 2021. More preferably, the normal spray area is located in the middle of the pipe body 2021, and there are two spray adjustment areas and are arranged separately. The left and right sides of the normal spray zone, that is, the pipe body 2021 includes a middle normal spray zone and two spray adjustment zones arranged on both sides of the middle normal spray zone. Each block 2024 is distributed in the two sprays. Leaching regulation area. The liquid spray pipe 202 of this structure can be used in engineering applications such as strip cleaning and cooling. It is further preferred that the two spray adjustment zones are arranged symmetrically with respect to the central normal spray zone to ensure strip cleaning/cooling, etc. Uniformity of treatment.

Understandably, when the above-mentioned central constant spray zone includes an even number of nozzles 2022, the even number of nozzles 2022 are arranged symmetrically with respect to the center line of the strip processing unit, and when the above central constant spray zone includes an odd number of nozzles 2022, one of the nozzles 2022 is located in the belt. On the center line of the steel processing unit, the remaining nozzles 2022 are arranged symmetrically with respect to the center line of the strip processing unit.

In the spray adjustment zone, the number of blocking blocks configured for each nozzle 2022 can be the same or different configurations; when the number of blocking blocks configured for the nozzles 2022 is the same, the layout of the blocking blocks 2024 can also be different, such as two adjacent blocks. The nozzles 2022 are configured with the same number of blocking blocks but the blocking blocks 2024 are arranged in a staggered manner, so that the two nozzles 2022 can spray liquid alternately.

In a preferred embodiment, each spray adjustment zone includes a plurality of spray adjustment sections, and each spray adjustment section is provided with at least one nozzle 2022; in each spray adjustment section, each nozzle 2022 matches If the number and layout of the blocking blocks are the same, the spray timing of each nozzle 2022 in the spray adjustment section is the same, that is, the nozzles are sprayed at the same time or blocked at the same time; in two adjacent spray adjustment sections, one of them sprays The number of blockages matched by a single nozzle 2022 of the adjustment section is different from the number of blockages matched by a single nozzle 2022 of another spray adjustment section. Based on this structure, the segmented liquid spray control of the liquid spray pipe 202 can be realized. When the spray of one spray regulating section is working, the nozzle 2022 of the other spray regulating section can be blocked to stop spraying, so that the The spray coverage of the spray pipe 202 is adjustable.

Preferably, when a single nozzle 2022 is matched with a plurality of blocking blocks 2024, the blocking blocks 2024 corresponding to the nozzle 2022 are evenly spaced along the circumference of the tube body 2021, which is convenient for adjustment and control. Wherein, the blocking blocks 2024 corresponding to the nozzle 2022 may be arranged in a 360° circle with respect to the guide rod 2023, or may be arranged in a fan shape with respect to the guide rod 2023.

In a further preferred embodiment, each of the blocking blocks 2024 in each spray adjustment zone includes at least one axial block row, and the number of blocks in the axial block row is equal to the number of the block blocks in the spray adjustment zone. The number of nozzles 2022 is the same, and the arrangement direction of each block 2024 is parallel to the axis of the pipe body. That is, the axial blocking block row includes a plurality of blocking blocks 2024, and the blocking blocks 2024 it includes are arranged in a one-to-one correspondence with the nozzles 2022 of the spray adjustment zone, and the blocking blocks 2024 of the axial blocking block row are arranged in a one-to-one correspondence. The linear arrangement direction is parallel to the axis of the pipe body, so that the axial block row can simultaneously block each nozzle 2022 of the spray adjustment zone, that is, shut down the spray adjustment zone.

Further, in the two spray adjustment zones, at least two axial block rows are collinear, that is, one axial block row in one spray adjustment zone and one axial block row in the other spray adjustment zone If the rows are collinear, when the guide rod 2023 rotates, each nozzle 2022 of the two spray adjustment zones can be blocked at the same time, and only the central normal spray zone works to obtain the smallest spray width.

In a further preferred embodiment, in each spray adjustment zone, from the central constant spray zone to the direction of the end of the corresponding side tube 2021, the number of blockages matched by a single nozzle 2022 of each spray adjustment section is sequentially Increase. For example, from the central normal spray area to the direction corresponding to the end of the side tube 2021, the spray adjustment area includes a first spray adjustment section, a second spray adjustment section...the Nth spray adjustment section ( N is greater than 2), the number of blockages matched by each nozzle 2022 in the first spray adjustment section is 1, and the number of blockages matched by each nozzle 2022 in the second spray adjustment section is 2, and so on. The number of blockages matched by each nozzle 2022 in the Nth spray adjustment section is N. Based on the above implementation, the probability of closing the nozzle 2022 gradually increases from the central normal spray area to the direction corresponding to the end of the side tube 2021, and the spray coverage of the liquid spray tube 202 can be gradually reduced.

Furthermore, in the above embodiment, in each spray adjustment zone, there is one axial block row described above, and the axial block row is used as the reference row; each nozzle 2022 matches each block 2024 , The central angle of every two adjacent blocking blocks 2024 with respect to the guide rod 2023 is θ, that is, they are arranged in sequence with the same arc length spacing with the reference column as the starting point. Then, taking each nozzle 2022 corresponding to the blockage of the reference row as the initial position, after the guide rod 2023 rotates θ, the first spray adjustment section is put into operation, and after the guide rod 2023 rotates 2θ, the first spray adjustment section and the second spray The adjustment section is put into operation. After that, every time the guide rod 2023 rotates θ, a spray adjustment section is put into operation to realize the gradual increase of the spray width of the spray pipe 202. The reverse operation realizes the spray width of the spray pipe 202. Decrease gradually.

In the embodiment shown in FIG. 4, the above-mentioned spray adjustment zone includes two spray adjustment sections, and each spray adjustment section has a nozzle 2022, wherein the nozzle 2022 in the first spray adjustment section is configured with a plug. Block 2024, the nozzle 2022 in the second spray adjustment section is configured with two blocking blocks 2024, the central angle of the two blocking blocks 2024 relative to the guide rod 2023 is 90°. Figure 5 corresponds to the case when the object to be cleaned is the widest specification, and each nozzle 2022 is in the open state; Figure 6 corresponds to the case when the object to be cleaned is the second wide specification, and the nozzle 2022 in the first spray adjustment section is open The nozzle 2022 in the second spray adjustment section is in the closed state; Figure 7 corresponds to the situation when the object to be cleaned is the narrowest specification, the nozzle 2022 in the first spray adjustment section and the second spray adjustment section are both in the Disabled. Obviously, when the number of spray adjustment sections increases correspondingly, the width specification of the object to be cleaned for the liquid spray pipe 202 is correspondingly broadened.

Continuing the structure of the above-mentioned spray pipe 202, as shown in FIG. 4, the above-mentioned guide rod driving mechanism includes a guide rod driving unit connected with the guide rod 2023, two quick connectors that can be used for male and female assembly, and two quick connectors for locking the two quick connectors. For the positioning pins that are tightly assembled, one quick connector is fixed on the guide rod 2023, and the other quick connector is fixed on one end of the pipe body 2021. The matching structure of the yin-yang quick connector is the prior art and can be purchased in the market, and its specific structure will not be repeated here. Set positioning holes on the female quick connector and the male quick connector, for example, set multiple positioning holes on the female quick connector, and set a locking hole on the male quick connector. During the relative rotation of the female quick connector and the male quick connector , The locking hole is opposite to the positioning hole on the female quick connector. After the guide rod 2023 is rotated in place, the guide rod 2023 can be limited by inserting the positioning pin into the locking hole and the corresponding positioning hole. The limit of each blocking block 2024 is changed. Understandably, in the above-mentioned structure where the central angle of every two adjacent blocking blocks 2024 relative to the guide rod 2023 is θ, the corresponding central angle between every two adjacent positioning holes is β, then θ can be Equal to β or a multiple of β. The above-mentioned guide rod driving unit may be a driving handle or an automatic rotary driving device, which will not be listed here.

Of course, the guide rod drive mechanism is not limited to the above-mentioned structure, and all self-locking rotating drive mechanisms are applicable to this embodiment. For example, a motor + reducer combined structure can be directly used for driving.

To further optimize the above-mentioned embodiment, as shown in Figure 4, a plug 2025 is provided at one end of the pipe body 2021. The plug 2025 may be a thread plug 2025 suitable for threaded assembly with the pipe body 2021 to block the end of the pipe body 2021. . In this embodiment, a limit hole is provided on the plug 2025, such as a hole directly opened on the plug 2025, or a limit tube installed on the plug 2025, and the guide rod 2023 is inserted in In the limit hole, the diameter of the limit hole is the same as or approximately the same as the guide rod 2023. The guide rod 2023 can be axially and radially limited. As the threaded plug 2025 is continuously tightened, the limit hole faces the guide rod. The pressure exerted by 2023 is also increasing, and this pressure is finally transmitted to each blocking block 2024 to make it closely fit with the inner wall of the pipe body 2021. The above structure ensures as far as possible the fastening effect of the guide rod 2023 without hindering the rotation of the guide rod 2023, which can reduce the deformation of the guide rod 2023 during use, and ensure the blocking effect of the blocking block 2024 on the nozzle 2022. .

Example four

The embodiment of the present invention provides an energy-saving and consumption-reducing cleaning device 2 which can be used in the second embodiment as the strip cleaning device 2 therein.

The energy-saving and consumption-reducing cleaning device 2 includes a cleaning container 201 in which a strip running channel is formed, and at least one cleaning pipe is respectively provided above and below the strip running channel, at least part of the cleaning The tube adopts the liquid spray tube 202 provided in the third embodiment above.

The cleaning container 201 may be a cleaning tank, a cleaning tank, a cooling tank, a cooling tank, and the like.

Generally, a plurality of cleaning pipes are provided above and below the strip running channel along the strip running direction, and each of the cleaning pipes preferably adopts the above-mentioned liquid spray pipe 202.

The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the present invention. Within the scope of protection.

Claims

An energy-saving and environmentally friendly pickling device, comprising a pickling tank with an overflow port, and is characterized in that: at least one end of the pickling tank is a liquid barrier end, and the liquid barrier end is provided with There are a supporting dam and a liquid blocking dam, the supporting dam extends upward from the bottom of the groove, and the liquid blocking dam extends downward from the top of the groove,

The supporting dam and the liquid blocking dam respectively extend to the vicinity of the strip running channel, and the distance between the two dams can allow the strip to pass through;

Alternatively, the distance between the supporting dam and the liquid blocking dam is less than the thickness of the strip, and the supporting dam and/or the liquid blocking dam are elastic dams, so that the strip can squeeze the elastic dam and remove it from the Pass between the supporting dam and the liquid blocking dam.
The energy-saving and environmentally-friendly pickling device according to claim 1, wherein the top end of the supporting dam extends to be flush with the lower end of the strip running channel.
The energy-saving and environmentally-friendly pickling device according to claim 2, wherein the supporting dam is a wear-resistant block suitable for supporting strips.
The energy-saving and environmentally-friendly pickling device according to claim 2, wherein the lower end of the liquid barrier dam extends to be flush with the upper end of the strip running channel, or the lower end of the liquid barrier dam is located on the strip running channel and is close to Strip running channel.
The energy-saving and environmentally-friendly pickling device according to claim 4, wherein the liquid blocking dam is an elastic dam.
The energy-saving and environmentally-friendly pickling device according to claim 5, wherein the liquid blocking dam is a modified rubber block that is wear-resistant and acid-resistant.
The energy-saving and environmentally-friendly pickling device according to claim 1, wherein the outer side of the liquid barrier is connected with a transition tank for collecting the acid liquid flowing out of the end, and the acid liquid reflux is provided on the transition tank. Mouth and strip running channel.
The energy-saving and environmentally-friendly pickling device according to claim 7, characterized in that: the strip inlet side and strip outlet side of the pickling tank are respectively provided with squeezing rollers, and the liquid-proof end side The squeezing rollers are arranged in the corresponding transition grooves.
The energy-saving and environmentally-friendly pickling device according to claim 1, wherein a plurality of free pressure rollers for rolling contact with the upper surface of the strip are arranged in the pickling tank in sequence along the running direction of the strip, and The axis of the free press roller is perpendicular to the running direction of the strip.
The energy-saving and environmentally-friendly pickling device according to claim 9, wherein the free pressing roller comprises a pressing roller shaft core fixed on the pickling tank and a rotatably sleeved on the pressing roller shaft core Rolling ring tube.
The energy-saving and environmentally-friendly pickling device according to claim 10, wherein the inner diameter of the rolling ring cylinder is larger than the diameter of the shaft core of the pressure roller.
The energy-saving and environmentally-friendly pickling device according to claim 1 or 9, wherein a plurality of free rollers for rolling contact with the lower surface of the strip are sequentially arranged in the pickling tank along the running direction of the strip. The axis of the free roller is perpendicular to the running direction of the strip.
The energy-saving and environmentally-friendly pickling device according to claim 12, wherein there is a distance between the bottom of the free roller and the bottom of the pickling tank.
The energy-saving and environment-friendly pickling device according to claim 1, characterized in that: the side wall of the pickling tank is provided with a plurality of side nozzles for spraying acid.
The energy-saving and environmentally-friendly pickling device according to claim 14, wherein each of the side nozzles and the strip running channel are located in the same horizontal plane, and the spray direction of the side nozzles is toward the strip running channel.
A strip processing system, which has a pickling station and a cleaning station. A strip cleaning device is arranged at the cleaning station, characterized in that: the pickling station is arranged with any one of claims 1 to 15 The energy-saving and environmentally-friendly pickling device described in one item.