Continuous turbulent flow pickling equipment and method in multi-roller-way transmission form

Abstract

The invention relates to continuous turbulent flow pickling equipment and method in a multi-roller-way transmission mode, and belongs to the technical field of hot galvanizing pickling. The technical scheme is as follows: tank bottoms in an inlet and an outlet of an acid-resistant tank body are respectively provided with an acid liquor reflux inlet I and an acid liquor reflux inlet II; a front acid liquor circulating liquid inlet and a rear acid liquor circulating liquid inlet are respectively formed in the tank wall of the acid-resistant tank body and are communicated with a liquid outlet of an acid liquor storage tank through an acid liquor circulating liquid inlet pipeline, an acid liquor circulating pump and a graphite heat exchanger; a first acid mist overflow prevention plate is arranged between the inlet of the acid-resistant tank body and the first acid liquor reflux inlet, and a second acid mist overflow prevention plate is arranged between the outlet of the acid-resistant tank body and the second acid liquor reflux inlet; a first acid liquor overflow profiling plate is arranged between the first acid liquor backflow port and the first acid liquor circulation liquid inlet, and a second acid liquor overflow profiling plate is arranged between the second acid liquor backflow port and the second acid liquor circulation liquid inlet. The pickling efficiency is improved, the pickling quality is stable, the labor intensity of operators is reduced, the working environment is improved, production is safe, and automatic production can be achieved.

Description

Technical Field

[0001] The invention relates to a continuous turbulent pickling device and method in the form of multi-roller transmission, belonging to the technical field of hot-dip galvanizing pickling. Background Art

[0002] Hot-dip galvanizing, also known as hot-dip galvanizing and hot-dip galvanizing, refers to a surface treatment technology that attaches a zinc layer to the surface of a metal steel component to achieve aesthetic and rust-proof effects. It is an effective way to prevent metal corrosion. Hot-dip galvanizing process: finished product pickling - water washing - adding auxiliary plating solution - drying - hanging plating - cooling - chemical treatment - cleaning - polishing - hot-dip galvanizing. Before galvanizing the workpiece, it is generally necessary to first perform a pickling and rust removal process, that is, to allow the acid to react with the oxide on the surface of the metal material and then fall off the surface of the metal material. At present, the pickling method in the galvanizing industry for angle steel, channel steel and other profiles is static intermittent immersion pickling of the whole hoist. There are multiple acid pools of different sizes on the work site, and an electric hoist is used to intermittently immerse the whole hoist workpiece in multiple pools in turn for pickling. For example: Chinese patent CN 201720667767.9 is named "A special lifting and hanger device for fixed distance in hot-dip galvanizing pickling process", etc. This pickling method has low efficiency, uneven pickling quality, requires more people, and acid mist leaks, which causes certain harm to the health of operators and poses certain safety hazards. Summary of the invention

[0003] The purpose of the present invention is to provide a continuous turbulent pickling equipment and method in the form of multi-roller transmission, which can improve the pickling efficiency, stabilize the pickling quality, reduce the labor intensity of operators, improve the working environment, prevent the leakage of acid mist, ensure safe production, and solve the above-mentioned technical problems existing in the background technology.

[0004] The technical solution of the present invention is: A continuous turbulent pickling equipment in the form of multi-roller transmission, comprising a feeding roller, an acid mist overflow prevention plate, an acid overflow profiling plate, an acid-resistant and wear-resistant transmission roller, a front acid circulation inlet, an acid-resistant tank body, a discharging roller, an acid reflux port, an acid reflux pipeline, an acid circulation inlet pipeline, an acid circulation pump, a graphite heat exchanger, an acid storage tank, an acid reflux port 2, a rear acid circulation inlet, an acid mist overflow prevention plate 2 and an acid overflow profiling plate 2, wherein the inlet of the acid-resistant tank body is provided with a Feeding roller, acid-resistant and wear-resistant transmission rollers are arranged in the acid-resistant tank body, and a discharging roller is arranged outside the acid-resistant tank body outlet. The feeding roller, acid-resistant and wear-resistant transmission roller and discharging roller are arranged on the same horizontal line to form a conveying roller for conveying workpieces. Acid reflux port 1 and acid reflux port 2 are respectively arranged at the bottom of the inlet and outlet of the acid-resistant tank body, and are connected to the inlet of the acid storage tank through an acid reflux pipeline; a front acid circulation inlet and a rear acid circulation inlet are respectively arranged on the wall of the acid-resistant tank body , connected with the outlet of the acid liquid storage tank through an acid circulation inlet pipeline, an acid circulation pump and a graphite heat exchanger; an acid mist overflow prevention plate 1 is arranged between the inlet of the acid-resistant tank body and the acid liquid reflux port 1, and an acid mist overflow prevention plate 2 is arranged between the outlet of the acid-resistant tank body and the acid liquid reflux port 2; an acid overflow profiling plate 1 is arranged between the acid liquid reflux port 1 and the front acid liquid circulation inlet, and an acid overflow profiling plate 2 is arranged between the acid liquid reflux port 2 and the rear acid liquid circulation inlet, the acid mist overflow prevention plate 1, the acid mist overflow prevention plate 2 Mist overflow plate 2, acid overflow profiling plate 1 and acid overflow profiling plate 2 have the same structure, all of which are composed of a plate body and profiling holes. A row of profiling holes is horizontally arranged on the plate body. The shape and number of the profiling holes match the cross-sectional shape and number of the workpieces. The width and height of the plate body are the same as the internal width and height of the acid-resistant tank body. The plate body is arranged perpendicular to the conveying direction of the workpieces being pickled to isolate the internal space of the acid-resistant tank body. Multiple workpieces on the conveying roller pass through the profiling holes on the plate body during transportation.

[0005] Furthermore, the number of the acid mist overflow prevention plate 1, the acid mist overflow prevention plate 2, the acid liquid overflow profiling plate 1 and the acid liquid overflow profiling plate 2 is multiple and they are arranged in parallel in the acid-resistant tank body.

[0006] Furthermore, the acid mist overflow prevention plate 1 and the acid liquid overflow profiling plate 1 are arranged close to the acid liquid return port 1; the acid mist overflow prevention plate 2 and the acid liquid overflow profiling plate 2 are arranged close to the acid liquid return port 2.

[0007] Furthermore, a pickling tank cover is provided on the top of the acid-resistant tank body, which is combined with a plurality of acid mist overflow prevention plates 1 and 2 at both ends of the inlet and outlet of the acid-resistant tank body to form a sealed tunnel pickling box.

[0008] Furthermore, a plurality of independent acid-resistant and wear-resistant transmission rollers are installed throughout the acid-resistant tank body from the entrance to the exit; the multiple workpieces are arranged as a group, the workpieces are arranged longitudinally along the conveying direction, and multiple groups of workpieces are arranged front to back, and are sequentially conveyed into the acid-resistant tank body by the feeding roller, and after pickling, they are continuously conveyed to the next process by the discharging roller, thereby realizing continuous longitudinal pickling.

[0009] Furthermore, the acid-resistant tank body, acid reflux port 1, acid reflux port 2, acid reflux pipe, acid storage tank, acid circulation pump, graphite heat exchanger, acid circulation inlet pipe, front acid circulation inlet and rear acid circulation inlet together constitute an acid turbulent circulation system, which forms a dynamic turbulent state through circulation of the acid in the acid-resistant tank body, thereby increasing the pickling efficiency of the workpiece surface.

[0010] A continuous turbulent pickling method in a multi-roller transmission form, using the above-mentioned continuous turbulent pickling equipment in a multi-roller transmission form, the steps are as follows: Multiple workpieces are arranged in a group. The workpieces are arranged longitudinally along the conveying direction. Multiple groups of workpieces are arranged front and back, and are sequentially conveyed into the acid-resistant tank body by the feeding roller. The acid in the acid storage tank is pressurized by the acid circulation pump and heated by the graphite heat exchanger, and then enters the acid-resistant tank body through the front acid circulation inlet and the rear acid circulation inlet, and enters the acid-resistant tank body between the acid overflow profiling plate 1 and the acid overflow profiling plate 2. The acid-resistant and wear-resistant rubber roller continuously conveys the workpieces, and the workpieces sequentially pass through the acid mist overflow prevention plate 1, the acid overflow profiling plate 2, and the acid mist overflow profiling plate 3. Plate 1, acid overflow profiling plate 2 and acid mist overflow prevention plate 2 are provided with profiling holes. During the transportation process, the workpiece is completely immersed in the heated acid in the acid-resistant tank body between the acid overflow profiling plate 1 and the acid overflow profiling plate 2, and the workpiece on the acid-resistant and wear-resistant transmission roller is pickled. The acid in the acid-resistant tank body is circulated by the acid circulation pump. The acid in the acid-resistant tank body forms turbulence, which has a flushing effect on various surfaces of the workpiece, thereby improving the pickling efficiency. After pickling, the workpiece is further conveyed to the next process by the discharge roller, thereby realizing continuous longitudinal pickling.

[0011] Furthermore, the acid in the acid-resistant tank body overflows into the acid-resistant tank body between the acid mist overflow prevention plate one and the acid overflow prevention plate one through the profiling hole of the acid overflow profiling plate one, and flows back to the acid storage tank through the acid reflux port one; the acid in the acid-resistant tank body overflows into the acid-resistant tank body 8 between the acid mist overflow prevention plate two and the acid overflow profiling plate two through the profiling hole of the acid overflow profiling plate two, and flows back to the acid storage tank through the acid reflux port two.

[0012] Furthermore, the acid mist generated by the overflow of the acid solution is blocked by the first acid mist overflow prevention plate and the second acid mist overflow prevention plate, thereby preventing the acid mist from leaking from the inlet and outlet of the acid-resistant tank body.

[0013] The positive effects of the invention include improving pickling efficiency, stabilizing pickling quality, reducing labor intensity of operators, improving working environment, preventing acid mist leakage, and ensuring safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of an embodiment of the present invention; Figure 2 2 is a schematic structural diagram of an acid mist overflow prevention plate according to an embodiment of the present invention; In the figure: feeding roller 1, pickling tank cover 2, acid mist overflow prevention plate 13, workpiece 4, acid overflow profiling plate 15, acid and wear-resistant driving roller 6, front acid circulation inlet 7, acid-resistant tank body 8, discharging roller 9, acid reflux port 10, acid reflux pipeline 11, acid circulation inlet pipeline 12, acid circulation pump 13, graphite heat exchanger 14, acid storage tank 15, acid reflux port 2 16, rear acid circulation inlet 17, acid mist overflow prevention plate 2 18, acid overflow profiling plate 2 19, plate body 20, profiling hole 21, inlet 22, outlet 23. DETAILED DESCRIPTION

[0015] The present invention will be further described below through embodiments in conjunction with the accompanying drawings.

[0016] Combined with Figure 1 and 2The present embodiment provides a continuous turbulent pickling equipment in the form of multi-roller transmission, comprising a feeding roller 1, an acid mist overflow prevention plate 3, an acid overflow profiling plate 5, an acid-resistant and wear-resistant transmission roller 6, a front acid circulation inlet 7, an acid-resistant tank body 8, a discharging roller 9, an acid reflux port 10, an acid reflux pipeline 11, an acid circulation inlet pipeline 12, an acid circulation pump 13, a graphite heat exchanger 14, an acid storage tank 15, an acid reflux port 2 16, a rear acid circulation inlet 17, an acid mist overflow prevention plate 2 18 and an acid overflow profiling plate 2 19, a feeding roller 1 is arranged outside the inlet of the acid-resistant tank body 8, an acid-resistant and wear-resistant transmission roller 6 is arranged inside the acid-resistant tank body 8, a discharging roller 9 is arranged outside the outlet of the acid-resistant tank body 8, and the feeding roller, the acid-resistant and wear-resistant transmission roller 6 and the discharging roller 9 are located in the same The acid-resistant tank body 8 is arranged on a horizontal line to form a conveying roller for conveying a workpiece 4. An acid liquid reflux port 10 and an acid liquid reflux port 2 16 are respectively arranged at the bottom of the tank inlet and outlet of the acid-resistant tank body 8, and are connected to the inlet of the acid liquid storage tank 15 through an acid liquid reflux pipe 11; a front acid liquid circulation inlet 7 and a rear acid liquid circulation inlet 17 are respectively arranged on the tank wall of the acid-resistant tank body 8, and are connected to the outlet of the acid liquid storage tank 15 through an acid liquid circulation inlet pipe 12, an acid liquid circulation pump 13 and a graphite heat exchanger 14; an acid mist overflow prevention plate 3 is arranged between the inlet of the acid-resistant tank body 8 and the acid liquid reflux port 10, and an acid mist overflow prevention plate 2 18 is arranged between the outlet of the acid-resistant tank body 8 and the acid liquid reflux port 2 16; an acid overflow profiling plate 5 is arranged between the acid liquid reflux port 10 and the front acid liquid circulation inlet 7 An acid overflow profiling plate 19 is arranged between the acid return port 16 and the rear acid circulation inlet 17. The acid mist overflow prevention plate 13, the acid mist overflow prevention plate 18, the acid overflow profiling plate 5 and the acid overflow profiling plate 19 have the same structure, and are all composed of a plate body 20 and profiling holes 21. A row of profiling holes 21 are horizontally arranged on the plate body 20. The shape and number of the profiling holes 21 match the cross-sectional shape and number of the workpieces 4. The width and height of the plate body 20 are the same as the internal width and height of the acid-resistant tank body 8. The plate body 20 is arranged perpendicular to the conveying direction of the workpiece 4 to be pickled, and the internal space of the acid-resistant tank body 8 is isolated. Multiple workpieces on the conveying roller pass through the profiling holes 21 on the plate body during the conveying process.

[0017] The number of the acid mist overflow prevention plate 1 3, the acid mist overflow prevention plate 2 18, the acid liquid overflow profiling plate 1 5 and the acid liquid overflow profiling plate 2 19 is multiple and arranged in parallel in the acid-resistant tank body 8.

[0018] The acid mist overflow prevention plate 3 and the acid liquid overflow profiling plate 5 are arranged near the acid liquid return port 10; the acid mist overflow prevention plate 2 18 and the acid liquid overflow profiling plate 2 19 are arranged near the acid liquid return port 2 16.

[0019] The acid-resistant tank body 8 is provided with a pickling tank cover 2 on the top, which is combined with a plurality of acid mist overflow prevention plates 1 3 and acid mist overflow prevention plates 2 18 at both ends of the inlet and outlet of the acid-resistant tank body 8 to form a sealed tunnel pickling box.

[0020] A plurality of independent acid-resistant and wear-resistant transmission rollers 6 are installed throughout the acid-resistant tank body 8 from the entrance to the exit; the multiple workpieces arranged in an array form a group, the workpieces are arranged longitudinally along the conveying direction, and multiple groups of workpieces are arranged front to back, and are sequentially conveyed into the acid-resistant tank body 8 by the feeding roller 1, and after pickling, they are continuously conveyed to the next process by the discharging roller 9, thereby realizing continuous longitudinal pickling.

[0021] The acid-resistant tank body 8, acid reflux port 1 10, acid reflux port 2 16, acid reflux pipe 11, acid storage tank 15, acid circulation pump 13, graphite heat exchanger 14, acid circulation inlet pipe 12, front acid circulation inlet 7 and rear acid circulation inlet 17 together constitute an acid turbulent circulation system, which forms a dynamic turbulent state through circulation of the acid in the acid-resistant tank body 8, thereby increasing the pickling efficiency of the workpiece surface.

[0022] A continuous turbulent pickling method in a multi-roller transmission form, using the above-mentioned continuous turbulent pickling equipment in a multi-roller transmission form, the steps are as follows: The multiple workpieces are arranged in a group, and the workpieces are arranged longitudinally along the conveying direction. Multiple groups of workpieces are arranged front and back, and are sequentially conveyed to the acid-resistant tank body 8 by the feeding roller 1; the acid in the acid storage tank 15 is pressurized by the acid circulation pump 13, heated by the graphite heat exchanger 14, and then enters the acid-resistant tank body 8 through the front acid circulation inlet 7 and the rear acid circulation inlet 17, and enters the acid-resistant tank body 8 between the acid overflow profiling plate 1 5 and the acid overflow profiling plate 2 19; the acid-resistant and wear-resistant rubber roller 6 continuously conveys the workpiece 4, and the workpiece 4 sequentially passes through the acid mist overflow prevention plate 3, the acid overflow profiling plate 1 Plate 1 5, acid overflow profiling plate 2 19 and profiling hole 21 of acid mist overflow prevention plate 2 18, during the transportation process, the workpiece 4 is completely immersed in the heated acid in the acid-resistant tank body 8 between the acid overflow profiling plate 1 5 and the acid overflow profiling plate 2 19, and the workpiece 4 on the acid and wear-resistant transmission roller 6 is pickled. The acid in the acid-resistant tank body 8 is circulated by the acid circulation pump 13, and the acid in the acid-resistant tank body 8 forms turbulence, which has a flushing effect on various surfaces of the workpiece, thereby improving the pickling efficiency; after pickling, the workpiece 4 is continued to be conveyed to the next process by the discharge roller 9, thereby realizing continuous longitudinal pickling.

[0023] The acid in the acid-resistant tank body 8 overflows into the acid-resistant tank body 8 between the acid mist overflow prevention plate 3 and the acid overflow prevention plate 5 through the profiling holes of the acid overflow profiling plate 5, and flows back to the acid storage tank 15 through the acid reflux port 10; the acid in the acid-resistant tank body 8 overflows into the acid-resistant tank body 8 between the acid mist overflow prevention plate 18 and the acid overflow profiling plate 19 through the profiling holes of the acid overflow profiling plate 19, and flows back to the acid storage tank 15 through the acid reflux port 16.

[0024] The acid mist generated by the overflow of the acid liquid is blocked by the acid mist overflow prevention plate 1 3 and the acid mist overflow prevention plate 2 18 to prevent the acid mist from leaking from the inlet and outlet of the acid-resistant tank body 8.

[0025] The acid mist overflow prevention plate 3 isolates the acid-resistant tank body 8 at the entrance into a feeding space. After the workpiece 4 enters the acid-resistant tank body 8 through the entrance 22, it enters the subsequent process through the contoured hole of the acid mist overflow prevention plate 3. The acid mist in the acid-resistant tank body 8 is isolated and sealed by the acid mist overflow prevention plate 3 to prevent leakage through the entrance. Since the workpiece passes through the contoured hole of the acid mist overflow prevention plate 3, very little acid mist leaks out. The number of the acid mist overflow prevention plates 3 is multiple, evenly distributed in the feeding space, and the multiple acid mist overflow prevention plates 3 further prevent the leakage of acid mist.

[0026] The acid mist overflow prevention plate 3 and the acid overflow profiling plate 5 isolate the acid-resistant tank body 8 into a closed acid reflux space 1, and the workpiece 4 entering from the profiling hole of the acid mist overflow prevention plate 3 enters the next process through the profiling hole of the acid overflow profiling plate 5, and the acid overflowing from the profiling hole of the acid overflow profiling plate 5 flows back to the acid storage tank 15 through the acid reflux port 10 at the bottom of the acid reflux space 1.

[0027] The acid overflow profiling plate 1 5 and the acid overflow profiling plate 2 19 isolate the acid-resistant tank body 8 into a closed pickling space. The workpiece 4 entering from the profiling hole of the acid overflow profiling plate 1 5 is pickled in the pickling space, and then enters the next process through the profiling hole of the acid overflow profiling plate 2 19. The acid enters the pickling space through the front acid circulation inlet 7 and the rear acid circulation inlet 17, and overflows through the profiling holes of the acid overflow profiling plate 1 5 and the acid overflow profiling plate 2 19; the number of the acid overflow profiling plate 1 5 and the acid overflow profiling plate 2 19 are both multiple, and they are respectively concentratedly arranged at the front end and the rear end of the pickling space to minimize acid overflow.

[0028] The acid mist overflow prevention plate 18 and the acid liquid overflow profiling plate 19 isolate the acid-resistant tank body 8 into a closed acid liquid reflux space 2. The workpiece 4 entering from the profiling hole of the acid mist overflow prevention plate 19 enters the next process through the profiling hole of the acid liquid overflow profiling plate 18. The acid liquid overflowing from the profiling hole of the acid liquid overflow profiling plate 19 flows back to the acid liquid storage tank 15 at the bottom of the acid liquid reflux space 2 through the acid liquid reflux port 16.

[0029] The acid mist overflow prevention plate 2 18 isolates the acid-resistant tank body 8 at the outlet into a discharge space, and the workpiece 4 after pickling enters the discharge space through the acid mist overflow prevention plate 2 18 profiling hole, enters the subsequent process through the outlet 23, and the acid mist in the acid-resistant tank body 8 is isolated and sealed by the acid mist overflow prevention plate 2 18 to prevent leakage through the outlet. The acid mist overflow prevention plate 2 18 profiling hole has a workpiece passing through, and the acid mist leaked out is very small. The number of the acid mist overflow prevention plate 2 18 is multiple, evenly distributed in the discharge space, and the multiple acid mist overflow prevention plates 2 18 further prevent the leakage of acid mist.

[0030] In the embodiment, the number of the acid mist overflow prevention plates 3 is six, which are arranged in parallel with each other in the acid-resistant tank body 8 between the inlet 22 and the acid liquid return port 10. The number of the acid mist overflow prevention plates 18 is ten, which are arranged in parallel with each other in the acid-resistant tank body 8 between the front acid liquid circulation inlet 7 and the acid liquid return port 10, and are arranged close to the acid liquid return port 10.

[0031] The number of the acid overflow profiling plates 1 5 is six, which are arranged in parallel with each other in the acid-resistant tank body 8 between the outlet 23 and the acid return port 2 16. The number of the acid overflow profiling plates 2 19 is ten, which are arranged in parallel with each other in the acid-resistant tank body 8 between the rear acid circulation inlet 17 and the acid return port 2 16, and are arranged close to the acid return port 2 16.

[0032] The number of the profiling holes 21 on the plate bodies of the acid mist overflow prevention plate 1 3, the acid mist overflow prevention plate 2 18, the acid liquid overflow profiling plate 1 5 and the acid liquid overflow profiling plate 2 19 is 18, which are arranged in a row. A group of workpieces for pickling is 18, which are arranged in a row longitudinally, and each workpiece passes through a profiling hole on the plate body.

[0033] The workpiece 4 is an angle steel, and the shape of the profiling hole 21 is the cross-sectional shape of the angle steel.

Claims

1. A continuous turbulent pickling equipment in the form of multi-roller transmission, characterized in that: The invention comprises a feeding roller (1), an acid mist overflow prevention plate (3), an acid overflow profiling plate (5), an acid-resistant and wear-resistant transmission roller (6), a front acid circulation inlet (7), an acid-resistant tank (8), a discharging roller (9), an acid reflux port (10), an acid reflux pipe (11), an acid circulation inlet pipe (12), an acid circulation pump (13), a graphite heat exchanger (14), an acid storage tank (15), an acid reflux port (2) 16), a rear acid liquid circulation inlet (17), a second acid mist overflow prevention plate (18) and a second acid liquid overflow profiling plate (19); a feeding roller (1) is arranged outside the inlet of the acid-resistant tank body (8); an acid-resistant wear-resistant transmission roller (6) is arranged inside the acid-resistant tank body (8); a discharge roller (9) is arranged outside the outlet of the acid-resistant tank body (8); the feeding roller (1), the acid-resistant wear-resistant transmission roller (6) and the discharge roller (9) are arranged on the same horizontal line to form a conveying roller for conveying the workpiece (4); an acid liquid reflux port (10) and an acid liquid reflux port (16) are respectively arranged at the bottom of the inlet and outlet of the acid-resistant tank body (8), and are connected to the inlet of the acid liquid storage tank (15) through an acid liquid reflux pipe (11); a front acid liquid circulation inlet (7) and a rear acid liquid circulation inlet (17) are respectively arranged on the wall of the acid-resistant tank body (8); and a discharging roller (9) is arranged outside the outlet of the acid-resistant tank body (8). The feeding roller (1), the acid-resistant wear-resistant transmission roller (6) and the discharge roller (9) are arranged on the same horizontal line to form a conveying roller for conveying the workpiece (4); an acid liquid reflux port (10) and an acid liquid reflux port (16) are respectively arranged at the bottom of the inlet and outlet of the acid-resistant tank body (8), and are connected to the inlet of the acid liquid storage tank (15) through an acid liquid reflux pipe (11); The circulation pump (13) and the graphite heat exchanger (14) are connected to the outlet of the acid liquid storage tank (15); an acid mist overflow prevention plate (3) is arranged between the inlet of the acid-resistant tank body (8) and the acid liquid return port (10); an acid mist overflow prevention plate (18) is arranged between the outlet of the acid-resistant tank body (8) and the acid liquid return port (16); an acid liquid overflow profiling plate (5) is arranged between the acid liquid return port (10) and the front acid liquid circulation inlet (7). A second acid overflow profiling plate (19) is arranged between the second acid return port (16) and the post-acid circulation inlet (17). The first acid mist overflow prevention plate (3), the second acid mist overflow prevention plate (18), the first acid overflow profiling plate (5) and the second acid overflow profiling plate (19) have the same structure, and are all composed of a plate body (20) and profiling holes (21). A row of profiling holes (21) are horizontally arranged on the plate body (20). The shape and number of the profiling holes (21) match the cross-sectional shape and number of the workpieces (4). The width and height of the plate body (20) are the same as the internal width and height of the acid-resistant tank body (8). The plate body (20) is arranged perpendicular to the conveying direction of the workpieces (4) to be pickled, and the internal space of the acid-resistant tank body (8) is isolated. The multiple workpieces (4) on the conveying roller pass through the profiling holes (21) on the plate body during the conveying process.

2. The continuous turbulent pickling equipment with multi-roller transmission according to claim 1 is characterized in that: The number of the acid mist overflow prevention plate 1 (3), the acid mist overflow prevention plate 2 (18), the acid liquid overflow profiling plate 1 (5) and the acid liquid overflow profiling plate 2 (19) is multiple and they are arranged in parallel in the acid-resistant tank body (8).

3. A continuous turbulent pickling equipment with a multi-roller transmission according to claim 1 or 2, characterized in that: The acid mist overflow prevention plate 1 (3) and the acid liquid overflow profiling plate 1 (5) are arranged near the acid liquid return port 1 (10); the acid mist overflow prevention plate 2 (18) and the acid liquid overflow profiling plate 2 (19) are arranged near the acid liquid return port 2 (16).

4. A continuous turbulent pickling equipment with a multi-roller transmission according to claim 1 or 2, characterized in that: The acid-resistant tank body (8) has a pickling tank cover (2) on the top, which is combined with a plurality of acid mist overflow prevention plates (3) and a plurality of acid mist overflow prevention plates (18) at both ends of the inlet and outlet of the acid-resistant tank body (8) to form a sealed tunnel pickling box.

5. A continuous turbulent pickling equipment with a multi-roller transmission according to claim 1 or 2, characterized in that: A plurality of independent acid-resistant and wear-resistant transmission rollers (6) are installed in the acid-resistant tank body (8) from the inlet to the outlet; the plurality of workpieces arranged in a row form a group, the workpieces are arranged longitudinally along the conveying direction, and the plurality of groups of workpieces are arranged front to back, and are sequentially conveyed into the acid-resistant tank body (8) by the feeding roller (1), and are conveyed to the next process by the discharging roller (9) after pickling, thereby realizing continuous longitudinal pickling.

6. The continuous turbulent pickling equipment with multi-roller transmission according to claim 4 is characterized in that: The acid-resistant tank body (8), the first acid liquid reflux port (10), the second acid liquid reflux port (16), the acid liquid reflux pipe (11), the acid liquid storage tank (15), the acid liquid circulation pump (13), the graphite heat exchanger (14), the acid liquid circulation inlet pipe (12), the front acid liquid circulation inlet port (7) and the rear acid liquid circulation inlet port (17) together constitute an acid liquid turbulent circulation system, which circulates the acid liquid in the acid-resistant tank body (8) into a dynamic turbulent state.

7. A continuous turbulent pickling method in the form of a multi-roller transmission, using the continuous turbulent pickling equipment in the form of a multi-roller transmission according to any one of claims 1 to 6, characterized in that The following steps are included: A plurality of workpieces are arranged in a group, the workpieces are arranged longitudinally along the conveying direction, and a plurality of groups of workpieces are arranged front to back, and are sequentially conveyed into an acid-resistant tank body (8) by a feeding roller (1); the acid in an acid storage tank (15) is pressurized by an acid circulation pump (13), heated by a graphite heat exchanger (14), and then enters the acid-resistant tank body (8) through a front acid circulation inlet (7) and a rear acid circulation inlet (17), and enters the acid-resistant tank body (8) between an acid overflow profiling plate 1 (5) and an acid overflow profiling plate 2 (19); the acid-resistant and wear-resistant rubber roller (6) continuously conveys the workpieces (4), and the workpieces (4) sequentially pass through an acid mist overflow prevention plate 1 (3), an acid overflow profiling plate 2 (19), and a plurality of workpieces (4) are conveyed into the acid-resistant tank body (8) between an acid overflow profiling plate 1 (5) and an acid overflow profiling plate 2 (19). The first plate (5), the second acid overflow profiling plate (19) and the profiling hole (21) of the second acid mist overflow prevention plate (18), during the conveying process, the workpiece (4) is completely immersed in the heated acid in the acid-resistant tank body (8) between the first acid overflow profiling plate (5) and the second acid overflow profiling plate (19), and the workpiece (4) on the acid-resistant and wear-resistant transmission roller (6) is pickled. The acid in the acid-resistant tank body (8) is circulated by the acid circulation pump (13), and the acid in the acid-resistant tank body (8) forms a turbulent flow, which produces a flushing effect on various surfaces of the workpiece, thereby improving the pickling efficiency; after pickling, the workpiece (4) is further conveyed to the next process by the discharge roller (9), thereby realizing continuous longitudinal pickling.

8. A continuous turbulent pickling method with multi-roller transmission according to claim 7, characterized in that: The acid in the acid-resistant tank body (8) overflows into the acid-resistant tank body (8) between the acid mist overflow prevention plate (3) and the acid mist overflow prevention plate (5) through the profiling hole of the acid liquid overflow profiling plate (5), and then flows back into the acid liquid storage tank (15) through the acid liquid reflux port (10); the acid in the acid-resistant tank body (8) overflows into the acid-resistant tank body (8) between the acid mist overflow prevention plate (18) and the acid liquid overflow profiling plate (19) through the profiling hole of the acid liquid overflow profiling plate (19), and then flows back into the acid liquid storage tank (15) through the acid liquid reflux port (16).

9. A continuous turbulent pickling method with multi-roller transmission according to claim 8, characterized in that: The acid mist generated by the overflow of the acid liquid is blocked by the first acid mist overflow prevention plate (3) and the second acid mist overflow prevention plate (18), thereby preventing the acid mist from leaking out from the inlet and outlet of the acid-resistant tank body (8).

Images