CN110438515A - Turbulent pickling device and strip processing system - Google Patents

Abstract

The invention relates to a turbulent-flow pickling device and a strip processing system using the turbulent-flow pickling device. The turbulent-flow pickling device includes a pickling tank, and a plurality of free rollers are arranged in the pickling tank , the free roller is used for rolling contact with the surface of the strip to tear the acid liquid boundary layer on the surface of the strip, and the axis of the free roller is perpendicular to the running direction of the strip. In the present invention, by setting the free roller, driven by the friction of the movement of the strip, the free roller rotates around its own axis, which can continuously tear the acid solution boundary layer on the surface of the strip, strengthen the turbulent flow of the acid solution, and increase the concentration of hydrogen ions on the surface of the strip. Diffusion speed in the boundary layer effectively improves the pickling effect.

Description

Turbulent pickling device and strip processing system

technical field

The invention belongs to the technical field of strip pickling, and in particular relates to a turbulent flow pickling device and a strip processing system using the turbulent flow pickling device.

Background technique

In the field of strip pickling, the pickling device 1 is the key process equipment. The strip is immersed in the pickling device 1 filled with acid solution at a certain temperature, and after passing through the pickling device 1 at a certain speed, the scale on the surface of the strip is removed under the chemical action of the acid solution. In order to ensure that the scale on the surface of the strip can be completely removed at the maximum process speed, it is necessary to design a reasonable pickling device 1 length 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 during the pickling process. If the pickling device 1 is long, the dissipation of heat energy and the discharge of acid mist will be 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, which is characterized in that the acid solution is filled in a relatively closed cavity with a relatively shallow depth by setting an inner cover, and a number of andesite rocks are arranged at the bottom of the cavity or wear-resistant plates, so that the running track of the strip in the pickling device 1 is almost a straight line; in order to ensure that the cavity can always be filled with acid, a large nozzle 101 is respectively set at the entrance and exit of the cavity. The pressured 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, thereby realizing the liquid seal of the acid liquid in the cavity, so that a large amount of acid liquid can only Flow out from the overflow weir in the middle of the cavity.

The two ends of the turbulent shallow groove can produce strong turbulent flow under the high-speed jet of the nozzle 101, but it is mainly concentrated on the upper part of the strip, because the acid liquid sprayed out is blocked by the strip and cannot enter effectively. Lower part of the strip. Due to the very strong resistance of the liquid, the flow state of the acid liquid in the middle of the turbulent shallow groove is relatively stable, and the turbulent flow is mainly caused by the movement of the strip itself. If andesite is used at the bottom of the turbulent shallow groove, it is easy to scratch the lower surface of the strip when producing some soft products; if a wear-resistant plate is used, the debris scraped from the surface of the wear-resistant plate will Will contaminate acid and clog nozzles. The turbulent-flow shallow tank relies on the large nozzle 101 at the inlet and outlet to liquid-seal the acid liquid. When producing products such as silicon steel that are prone to impurities in the acid liquid, the nozzles on the nozzle 101 are prone to clogging. With the reduction of the amount of acid solution, the final tank will not be filled with acid solution, which will cause pickling failure and produce defective products; at the same time, the high-speed jets continuously ejected from the large nozzle 101 at the inlet and outlet will be in the process of hitting the acid solution. A large amount of acid mist is generated. Since there is a squeeze roller in this area, a mist extraction port must be installed. Therefore, with the discharge of a large amount of acid mist, not only the loss of acid solution is large, but also the acid mist is treated to meet the standard. Increase the operating cost of the unit.

Contents of the invention

Embodiments of the present invention relate to a turbulent-flow pickling device and a strip processing system using the turbulent-flow pickling device, which can at least solve some of the defects of the prior art.

The embodiment of the present invention relates to a turbulent flow pickling device, which includes a pickling tank, and a plurality of free rollers are arranged in the pickling tank, and the free rollers are used for rolling contact with the surface of the strip to tear the surface of the strip The acid boundary layer, the axis of the free roller is 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 sequentially arranged above the strip running channel along the running direction of the strip.

As one of the embodiments, the free press roll includes a press roll shaft core fixed on the pickling tank and a rolling ring sleeve rotatably fitted on the press roll shaft core.

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

As one of the embodiments, each of the free rollers includes a plurality of free idler rollers, and each of the free idler rollers is sequentially arranged below the strip steel running channel along the running direction of the strip.

As one of the embodiments, there is a distance between the bottom of the free idler 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 solution.

As one of the embodiments, each of the side nozzles is located in the same horizontal plane as the strip running channel, and the injection direction of the side nozzles faces 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 above-mentioned turbulence is arranged at the pickling station. Flow type pickling device.

Embodiments of the present invention have at least the following beneficial effects:

The turbulent flow type pickling device and the strip processing system provided by the present invention can continuously tear the acid liquid boundary layer on the surface of the strip by setting the free roller, driven by the friction of the movement of the strip, and rotating around its own axis. Strengthen the turbulence of the acid solution, increase the diffusion speed of hydrogen ions in the boundary layer on the surface of the strip, and effectively improve the pickling effect.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the existing pickling device that background technology provides;

FIG. 2 is a schematic structural view of a turbulent flow pickling device provided in Embodiment 1 of the present invention;

3 is a schematic plan view of a turbulent flow pickling device provided in Embodiment 1 of the present invention;

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

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

Detailed ways

The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Embodiment one

As shown in Fig. 2 and Fig. 3, the embodiment of the present invention provides a kind of turbulent flow pickling device 1, which includes a pickling tank 102, and a plurality of free rollers are arranged in the pickling tank 102, and the free rollers are used for contacting with the belt The acid liquid boundary layer on the surface of the strip is torn by rolling contact with the surface of the strip, and the axis of the free roller is perpendicular to the running direction of the strip.

The above pickling tank 102 is preferably a conventional turbulent shallow tank in the field.

It is easy to understand that the arrangement of the free roller should ensure that it can be in rolling contact with the upper surface of the strip, which can be 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, or its top is aligned with the top of the strip. The bottom end of the strip running channel is flush. Apparently, the axes of the free rollers are generally parallel to the horizontal direction; the free rollers are arranged in parallel.

In this embodiment, by setting the free roller, driven by the friction of the movement of the strip, the free roller rotates around its own axis, which can continuously tear the acid solution boundary layer on the surface of the strip, strengthen the turbulent flow of the acid solution, and increase the concentration of hydrogen ions on the surface of the strip. The diffusion speed in the boundary layer on the strip surface can effectively improve the pickling effect.

Wherein, as shown in Fig. 2 and Fig. 3, each of the above-mentioned free rolls includes a plurality of free press rolls 107, and each of the free press rolls 107 is sequentially arranged above the strip running channel along the strip running direction, that is, for contact with the strip. The upper surface rolling contact tears the acid boundary layer on the upper surface of the strip. Further preferably, each is arranged at intervals by pressing rollers 107 .

In an optional embodiment, the free press roll 107 includes a press roll shaft core fixed on the pickling tank 102 and a rolling ring sleeve rotatably fitted on the press roll shaft core. Both the rolling ring and the rolling ring are preferably made of acid-resistant and corrosion-resistant materials with good wear resistance and self-lubricating properties. A further preferred structure is: there is a gap between the rolling ring cylinder and the pressure roller shaft core, that is, the inner diameter of the rolling ring cylinder is larger than the diameter of the pressure roller shaft core (preferably slightly larger), so that the rolling ring cylinder is easier to rotate with the friction of the strip , At the same time, it can buffer the impact force caused by the vibration of the strip.

In one of the embodiments, as shown in Fig. 2 and Fig. 3, each of the above-mentioned free rollers includes a plurality of free rollers 108, and each of the free rollers 108 is sequentially arranged below the strip running channel along the running direction of the strip, namely Boundary layer of acid solution used to tear the lower surface of the strip in rolling contact with the lower surface of the strip. Further preferably, each idler roller 108 is arranged at intervals.

In this embodiment, by setting the free idler 108, while supporting the strip, the free idler 108 rotates around its own axis under the friction of the movement of the strip, so that the acid liquid boundary layer on the lower surface of the strip can be continuously torn , strengthen the turbulence of the acid solution, increase the diffusion rate of hydrogen ions in the boundary layer on the surface of the strip, and effectively improve the pickling effect. Since the use of andesite to support the strip is avoided, the problem of scratching the lower surface of the strip during operation is solved.

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

Further preferably, there is a distance between the bottom of the above-mentioned free idler 108 and the bottom of the pickling tank 102 (the bottom plate of the pickling tank 102), so as to ensure the integrity of the slope of the bottom plate, so that insoluble deposits do not accumulate locally, which reduces the need for deposition and cleaning. Silt difficulty.

Wherein, for the situation that the free pressing roller 107 and the free idler roller 108 are provided at the same time, the number of the free pressing roller 107 and the free idler roller 108 can be the same, and they are set in one-to-one correspondence, and each pair of free pressing roller 107 and free idler roller arranged up and down In 108, the two can face up and down, and can also be arranged in a misplaced manner along the running direction of the strip, but it is advisable to arrange the two adjacent to ensure the stability of the running of the strip.

Further optimize the structure of the above-mentioned turbulent flow type pickling device 1, as shown in Fig. 2 and Fig. 3, the side wall of the pickling tank 102 is provided with a plurality of side nozzles 109 for spraying acid liquid, through each side nozzle 109 not only can Supplementing the acid solution into the pickling tank 102, and spraying the acid solution into the tank through the side nozzle 109 with a high-speed jet can significantly increase the overall turbulence intensity of the acid solution 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 Figure 2 and Figure 3, each side nozzle 109 is located at the same In the horizontal plane, the injection direction of the side nozzles 109 faces the strip running channel, and it is better to increase the overall turbulence intensity of the acid solution in the tank, especially the turbulence intensity of the acid solution near the strip.

Further optimize the structure of the above-mentioned turbulent flow type 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, and the tank cover is closed on the tank body 102 , so as to enclose and form a relatively airtight cavity convenient for storing acid liquid. In one embodiment, the above-mentioned tank cover includes an outer cover 1101 and an inner cover 1102. On the platform, the acid liquid and acid mist in the cavity can be well sealed, and the outer cover 1101 can further improve the sealing performance of the turbulent flow pickling device 1 .

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

Further optimize the structure of the above-mentioned turbulent flow pickling device 1, at least one end of the pickling tank 102 is a liquid isolation end 103, and the liquid isolation end 103 is provided with a supporting dam 1031 and a liquid blocking dam 1032, and the supporting dam 1032 is The support dam 1031 extends upward from the bottom of the tank, the liquid blocking dam 1032 extends downward from the top of the tank, the supporting dam 1031 and the liquid blocking dam 1032 respectively extend to the vicinity of the strip running channel, and the gap between the two dams The distance between the supporting dam 1031 and the liquid blocking dam 1032 is smaller than the thickness of the strip, and the supporting dam 1031 and/or the liquid blocking dam 1032 are elastic dams, so that The strip can press against the elastic dam and pass between the supporting dam 1031 and the liquid blocking dam 1032 .

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

In a preferred embodiment, the above-mentioned support dam 1031 is also used to support the strip while acting as a dam body to block the acid liquid, that is, the top of the support dam 1031 extends to be flush with the lower end of the strip running channel, for example, The support dam 1031 is a wear-resistant block suitable for supporting the strip; in addition, the support dam 1031 also has acid corrosion resistance. The impact force caused by poor plate shape, for example, the above-mentioned wear-resistant block is (to give a material of the wear-resistant block). In another embodiment, during normal operation, the support dam 1031 is not in contact with the lower surface of the strip, for example, there is a small gap between the top of the support dam 1031 and the lower end of the strip running channel.

In a preferred embodiment, during normal operation, the bottom end of the above-mentioned 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, and the smaller the gap, the better (preferably not greater than 1mm), namely 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, while blocking the acid liquid from flowing out from the upper part of the strip, it can better absorb the liquid caused by 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 above-mentioned liquid blocking dam 1032 can be fixed on the platform of the inner cover, and its upper end is in contact with the inner cover 1102; preferably, it can be detachably installed on the platform of the inner cover, such as clamping or screwing.

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

In the turbulent flow pickling device 1 provided in this embodiment, by setting the liquid isolation end 103 composed of the supporting dam 1031 and the liquid blocking dam 1032, a relatively airtight cavity convenient for storing acid liquid is formed inside the pickling tank 102, Owing to no longer needing to use the high-speed jet to liquid-seal the acid solution at the two ends of the pickling tank 102, a large amount of acid mist will not be produced, thereby reducing the cost of acid consumption and subsequent treatment of the acid mist; If the nozzle is sealed, the adaptability of the pickling tank 102 will be greatly enhanced, so as to avoid that when pickling such as silicon steel and other varieties, the high impurity content in the acid solution will cause nozzle blockage, the acid tank will not be filled with acid solution and cause acid In case of washing failure.

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 Fig. 2 and Fig. 3, the outer side of the liquid separation end 103 is connected with a socket for collecting the acid liquid flowing out from this end. A transition tank 105, 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 to be recycled by the turbulent flow pickling device 1 . Wherein, the bottom of the transition tank 105 should be lower than the top of the support dam 1031, 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 reflux of the acid solution. Further, the transition tank 105 is also provided with an end mist outlet to prevent the acid mist from overflowing from the transition tank 105 .

Generally, the strip inlet side and the strip exit side of the pickling tank 102 are respectively provided with wringing rollers 106, and for the above-mentioned structure provided with the transition tank 105, the wringing rollers on the side of the liquid separation end 103 The rollers 106 are arranged in the corresponding transition grooves 105 to reduce the occupied space.

In addition, the lowest point of the bottom of the pickling tank 102 is provided with a communication port, through which part of the acid liquid is continuously discharged at a small flow during production for recycling, and part of the impurities deposited at 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 temporarily stops or is stopped for maintenance, the acid solution in the pickling tank 102 can be quickly emptied through the emptying port. After the unit stops, the acid liquid 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 uncapping machine, and then it can enter the tank for maintenance and cleaning operations . The pickling tank 102 is also provided with a water seal tank, and the discontinuous part of the water seal tank is connected through the water seal tank connecting pipe, and the water seal tank can provide better sealing performance for the acid mist generated by the pickling tank 102 .

Embodiment two

An embodiment of the present invention provides a strip processing system, which has a pickling station and a cleaning station, a strip cleaning device 2 is arranged at the cleaning station, and the first embodiment described above is arranged at the pickling station. A turbulent-flow pickling device 1 is provided, and the specific structure of the turbulent-flow pickling device 1 will not be repeated here.

The above-mentioned cleaning station can be positioned at the upstream of the pickling station, that is, the strip is firstly processed by the above-mentioned strip cleaning device 2, and then processed by the above-mentioned turbulent-flow pickling device 1, such as the treatment of stainless steel strips; the above-mentioned pickling process The station can also be located upstream of the cleaning station, such as the processing of some cold-rolled strips, etc., which will not be described in detail here.

Embodiment Three

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

As shown in Fig. 4, a guide rod 2023 is provided inside the pipe body 2021, the guide rod 2023 is parallel to the axial direction of the pipe body and at least one block 2024 is arranged on the guide rod 2023, each of the block The block 2024 is matched with one of the nozzles 2022 and both are located on the same radial section of the pipe body 2021, the guide rod 2023 is connected with a device for driving its rotation so that the blocking block 2024 is blocked or deviates from the corresponding nozzle 2022 Guide rod drive mechanism.

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

Wherein, the guide rod 2023 is preferably arranged coaxially with the pipe body 2021, and the block 2024 is always in contact with the pipe wall during the rotation of the guide rod 2023. In another embodiment, the guide rod 2023 is arranged eccentrically, that is, the axis of the guide rod deviates from the axis of the pipe body, and is located on the side of the axis of the pipe body close to each nozzle 2022, so the blocking surface of the block 2024 and the guide rod The distance between the axes 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 with the guide rod 2023, it will only come into contact with the inner wall of the pipe body 2021 when it is turned to face the corresponding nozzle 2022. In this way, the corresponding nozzle 2022 is blocked. At other times, the block 2024 does not contact the inner wall of the pipe body 2021, thereby reducing the wear of the block 2024 and avoiding the continuous transmission of the frictional force of the block 2024 to the guide rod 2023 and affecting the guide rod 2023. Rod 2023 service life.

Wherein, 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, and in the eccentrically arranged structure of the above-mentioned guide rod 2023, a blocking block can be provided The plugging surface of 2024 is an arc-shaped surface suitable for inscribed with the pipe wall at the nozzle 2022, so as to ensure the sealing effect on the liquid inlet of the nozzle 2022. Further preferably, as shown in FIGS. 5-7 , the middle part of the blocking surface of the blocking block 2024 is provided with a groove, which can reduce the friction between the blocking block 2024 and the pipe wall to a certain extent.

In the above liquid spray pipe 202, part of the nozzles 2022 can be set without the blocking block 2024, that is, the part of the nozzles 2022 can maintain the normal spray/normal open state, and the remaining nozzles 2022 can be blocked or not blocked by the corresponding blocking block 2024 Blocking to realize opening and closing adjustment control, corresponding to the formation of a normal spray area and a spray adjustment area on the pipe body 2021, further preferably, the normal spray area is located in the middle of the pipe body 2021, and there are two spray adjustment areas and are listed in this The left and right sides of the normal spray area, that is, the pipe body 2021 includes the middle normal spray area and two spray adjustment areas arranged on both sides of the middle normal spray area, and each of the blockages 2024 is distributed in the two spray areas. In the shower conditioning area. The liquid spray pipe 202 of this structure is suitable for engineering applications such as cleaning and cooling of the strip, and it is further preferred to set the two spray adjustment areas to be arranged symmetrically with respect to the central constant spray area, so as to ensure the cleaning/cooling of the strip, etc. Uniformity of treatment.

It can be understood that when the above-mentioned central constant spraying area includes an even number of nozzles 2022, the even number of nozzles 2022 are arranged symmetrically with respect to the centerline of the strip processing unit; when the above-mentioned central constant spraying area includes an odd number of nozzles 2022, one of the nozzles 2022 is located 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 steel processing unit.

In the spray adjustment area, the number of blocking blocks configured by each nozzle 2022 can be the same, or it can be configured in a differentiated manner; when the number of blocking blocks configured by the nozzles 2022 is the same, the layout of the blocking blocks 2024 can also be different, such as adjacent two The two nozzles 2022 have the same number of blocking blocks but the blocking blocks 2024 are arranged in a misplaced position, so that the two nozzles 2022 can spray liquid alternately.

In a preferred embodiment, each of the spray regulation areas includes a plurality of spray regulation sections, and each spray regulation section is provided with at least one nozzle 2022; in each spray regulation section, each nozzle 2022 is matched If the number and layout of blocks are the same, then in the spray adjustment section, the spraying timing of each nozzle 2022 is the same, that is, spray liquid at the same time or be blocked at the same time; in two adjacent spray adjustment sections, one of the spraying adjustment sections 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 segmental spraying control of the spraying pipe 202 can be realized. When one spraying adjustment section sprays liquid, the nozzle 2022 of the other spraying adjustment section can be blocked to stop spraying liquid, so that the spraying adjustment section The spray coverage of the liquid spray pipe 202 is adjustable.

Preferably, when a single nozzle 2022 is matched with multiple blocking blocks 2024, the blocking blocks 2024 corresponding to the nozzle 2022 are evenly spaced along the circumference of the pipe body 2021 to facilitate adjustment and control. Wherein, each blocking block 2024 corresponding to the nozzle 2022 may be arranged in a 360° circle relative to the guide rod 2023 , or arranged in a fan shape relative to the guide rod 2023 .

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

Further, in the two spray adjustment areas, at least two axial block rows are collinear, that is, one axial block row in one spray adjustment area and one axial block in the other spray adjustment area If the columns are collinear, when the guide rod 2023 rotates, the nozzles 2022 of the two spray regulation areas can be blocked simultaneously, and only the central constant spray area works to obtain the minimum spray width.

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

Furthermore, in the above-mentioned embodiment, in each spray adjustment area, there is one axial block row, and the axial block row is taken as the reference row; each block 2024 matched with each nozzle 2022 , the central angles of every two adjacent blocking blocks 2024 with respect to the guide rod 2023 are θ, that is, they are arranged sequentially with the same arc length interval starting from the reference row. Then, take the nozzles 2022 corresponding to the blockage of the reference column as the initial position, and after the guide rod 2023 rotates θ, the first spray regulation section is put into operation, and after the guide rod 2023 rotates 2θ, the first spray regulation section and the second spray regulation section The adjustment section is put into operation, and 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 liquid spray pipe 202, and the reverse operation can realize the increase of the spray width of the liquid spray pipe 202 Gradually decrease.

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

Continuing the structure of the above-mentioned spray pipe 202, as shown in Figure 4, the above-mentioned guide rod drive mechanism includes a guide rod drive unit connected to the guide rod 2023, two quick connectors that can be used for male and female assembly, and are used to lock the two quick connectors. Positioning pins that are tightly assembled together, one of the quick joints is fixed on the guide rod 2023 , and the other quick joint is fixed at one end of the pipe body 2021 . The mating structure of the male-female quick connector is a prior art and can be purchased from the market, and its specific structure will not be repeated here. Positioning holes are respectively set on the female quick connector and the male quick connector, for example, multiple positioning holes are set on the female quick connector, and a locking hole is set on the male quick connector, during the relative rotation of the female quick connector and the male quick connector , the locking hole is exchanged with the positioning hole on the female quick connector. After the guide rod 2023 is rotated in place, the positioning pin can be inserted into the locking hole and the corresponding positioning hole to limit the position of the guide rod 2023, that is, to realize Restricted to each blocking block 2024. It can be understood that, in the above-mentioned structure in which the central angles of every two adjacent blocking blocks 2024 relative to the guide rod 2023 are θ, the corresponding central angles between the above-mentioned every two adjacent positioning holes are β, then θ can be Equal to β or a multiple of β. The above-mentioned guide rod drive unit can be a drive handle, or an automatic rotary drive device, which will not be listed here.

Certainly, the guide rod driving mechanism is not limited to the above-mentioned structure, and any self-locking rotating driving mechanism is suitable for this embodiment, for example, it can be directly driven by a combined structure of a motor and a reducer.

Further optimize the above embodiment, as shown in Figure 4, one end of the pipe body 2021 is provided with a plug 2025, which can be a threaded plug 2025 suitable for thread assembly with the pipe body 2021, for blocking 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 the In the limit hole, the diameter of the limit hole is the same or approximately the same as that of the guide rod 2023, and the guide rod 2023 can be axially and radially limited. The pressure exerted by 2023 is also increasing, and this pressure is finally transmitted to each blocking block 2024, making it closely fit with the inner wall of the pipe body 2021. The above structure ensures the fastening effect on the guide rod 2023 as much as possible 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 .

Embodiment Four

An embodiment of the present invention provides an energy-saving and consumption-reducing cleaning device 2, which can be used in the second embodiment above 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 passage is formed, and at least one cleaning pipe is respectively arranged above and below the strip running passage, at least part of the cleaning The pipe adopts the liquid spray pipe 202 provided in the third embodiment above.

The above-mentioned cleaning container 201 may be a cleaning tank, a cleaning box, a cooling tank, a cooling box, and the like.

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

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (9)

1. A turbulent flow type pickling device, comprising a pickling tank, characterized in that: a plurality of free rollers are arranged in the pickling tank, and the free rollers are used for rolling contact with the surface of the strip to tear the strip The acid boundary layer on the surface, the axis of the free roll is perpendicular to the strip running direction. 2. The turbulent flow type pickling device as claimed in claim 1, characterized in that: each of the free rolls includes a plurality of free press rolls, and each of the free press rolls is sequentially arranged on the strip along the running direction of the strip. run above the channel. 3. The turbulent flow 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 rotatably sleeved press roller shaft core on the rolling ring cylinder. 4. The turbulent flow pickling device according to claim 3, characterized in that: the inner diameter of the rolling ring cylinder is larger than the diameter of the pressure roller shaft core. 5. The turbulent flow type pickling device as claimed in claim 1, characterized in that: each of the free rollers includes a plurality of free rollers, and each of the free rollers is sequentially arranged on the strip along the running direction of the strip. Run below the channel. 6. The turbulent flow pickling device according to claim 5, characterized in that there is a distance between the bottom of the free roller and the bottom of the pickling tank. 7. The turbulent flow pickling device according to any one of claims 1 to 6, characterized in that: the side wall of the pickling tank is provided with a plurality of side nozzles for spraying acid solution. 8. The turbulent flow pickling device according to claim 7, characterized in that: each of the side nozzles is located in the same horizontal plane as the strip running channel, and the injection direction of the side nozzles faces the strip running channel. 9. A strip processing system, having 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 as claimed in claims 1 to 8 The turbulent flow type pickling device described in any one.