A continuous turbulent pickling equipment and method with multi-roller conveyor system

Abstract

This invention relates to a continuous turbulent pickling equipment and method with a multi-roller conveyor system, belonging to the field of hot-dip galvanizing pickling technology. The technical solution is as follows: Acid return port one and acid return port two are respectively installed at the bottom of the acid-resistant tank's inlet and outlet; a front acid circulation inlet and a rear acid circulation inlet are respectively installed on the tank wall, connected to the outlet of the acid storage tank via an acid circulation inlet pipe, an acid circulation pump, and a graphite heat exchanger; an anti-acid mist overflow plate one is installed between the inlet of the acid-resistant tank and acid return port one, and an anti-acid mist overflow plate two is installed between the outlet of the acid-resistant tank and acid return port two; an acid overflow profile plate one is installed between acid return port one and acid circulation inlet one, and an acid overflow profile plate two is installed between acid return port two and acid circulation inlet two. This invention improves pickling efficiency, stabilizes pickling quality, reduces the labor intensity of operators, improves the working environment, ensures safe production, and can achieve automated production.

Description

Technical Field

[0001] This invention relates to a continuous turbulent pickling equipment and method with multi-roller conveyor, belonging to the field of hot-dip galvanizing pickling technology. Background Technology

[0002] Hot-dip galvanizing, also known as hot-dip zinc plating, is a surface treatment technology that applies a zinc layer to the surface of metal steel components to achieve aesthetic appeal and rust prevention. It is an effective method of metal corrosion protection. The hot-dip galvanizing process includes: pickling, washing, adding flux, drying, plating, cooling, chemical treatment, cleaning, polishing, and completion of the hot-dip galvanizing process. Before galvanizing, a pickling process is generally required to remove rust, where acid reacts with oxides on the metal surface and detaches them. Currently, the pickling method in the galvanizing industry of angle steel, channel steel and other profiles is static intermittent immersion pickling with the entire load suspended in one go. There are multiple acid tanks of different sizes at the work site. Electric hoists are used to intermittently immerse the entire load suspended in multiple tanks. For example, Chinese patent CN 201720667767.9 is entitled "A special lifting frame device for fixed distance in hot-dip galvanizing pickling process". This pickling method is inefficient, the pickling quality is inconsistent, a large number of personnel are required, and acid mist leakage poses certain health hazards to the operators and safety risks. Summary of the Invention

[0003] The purpose of this invention is to provide a continuous turbulent pickling equipment and method with multi-roller conveyor, which improves pickling efficiency, stabilizes pickling quality, reduces the labor intensity of operators, improves the working environment, prevents acid mist leakage, ensures safe production, and solves the above-mentioned technical problems existing in the background art.

[0004] The technical solution of this invention is:

[0005] A continuous turbulent pickling device with a multi-roller conveyor system includes a feeding roller conveyor, an anti-acid mist overflow plate, an acid overflow profile plate, an acid-resistant and wear-resistant transmission roller, a front acid circulation inlet, an acid-resistant tank, a discharge roller conveyor, an acid return inlet, an acid return pipe, an acid circulation inlet pipe, an acid circulation pump, a graphite heat exchanger, an acid storage tank, a second acid return inlet, a rear acid circulation inlet, an anti-acid mist overflow plate, and a second acid overflow profile plate. The inlet of the acid-resistant tank is provided with... The system includes a feeding roller conveyor, an acid-resistant and wear-resistant drive roller inside the acid-resistant tank, and a discharge roller conveyor outside the outlet of the acid-resistant tank. The feeding roller conveyor, the acid-resistant and wear-resistant drive roller, and the discharge roller conveyor are arranged on the same horizontal line, forming a conveyor for transporting workpieces. The bottom of the acid-resistant tank at the inlet and outlet is equipped with acid return inlet one and acid return inlet two, respectively, which are connected to the inlet of the acid storage tank via acid return pipes. The tank wall is equipped with a front acid circulation inlet and a rear acid circulation inlet. The acid solution is connected to the outlet of the acid storage tank via an acid circulation inlet pipe, an acid circulation pump, and a graphite heat exchanger. An anti-acid mist overflow plate is installed between the inlet of the acid-resistant tank and the first acid return port, and an anti-acid mist overflow plate is installed between the outlet of the acid-resistant tank and the second acid return port. An acid overflow profile plate is installed between the first acid return port and the front acid circulation inlet, and an acid overflow profile plate is installed between the second acid return port and the rear acid circulation inlet. The anti-acid mist overflow plate and the anti-acid... The structures of the mist overflow plate 2, acid overflow profile plate 1, and acid overflow profile plate 2 are the same, all consisting of a plate body and profile holes. A row of profile holes is horizontally arranged on the plate body. The shape and number of profile holes match the cross-sectional shape and number of workpieces. The width and height of the plate body are the same as the internal width and height of the acid-resistant tank. The plate body is arranged perpendicular to the conveying direction of the workpieces to be pickled, thus isolating the internal space of the acid-resistant tank. Multiple workpieces on the conveying roller conveyor pass through the profile holes on the plate body during the conveying process.

[0006] Furthermore, the number of the first anti-acid mist overflow plate, the second anti-acid mist overflow plate, the first acid overflow contour plate, and the second acid overflow contour plate are multiple and arranged in parallel within the acid-resistant tank.

[0007] Furthermore, the first anti-acid mist overflow plate and the first acid overflow contour plate are arranged near the first acid return port; the second anti-acid mist overflow plate and the second acid overflow contour plate are arranged near the second acid return port.

[0008] Furthermore, the acid-resistant tank has an acid pickling tank cover on top, which, together with the multiple anti-acid mist overflow plates one and two at both ends of the acid-resistant tank inlet and outlet, forms a sealed tunnel acid pickling box.

[0009] Furthermore, multiple independent acid-resistant and wear-resistant transmission rollers are installed throughout the acid-resistant tank from the inlet to the outlet; multiple workpieces are arranged as a group, and the workpieces are arranged longitudinally along the conveying direction. Multiple groups of multiple workpieces are arranged front and back, and are sequentially conveyed into the acid-resistant tank by the feeding roller conveyor. After pickling, they are conveyed to the next process by the discharge roller conveyor, thereby realizing continuous longitudinal pickling.

[0010] Furthermore, the acid-resistant tank, acid reflux port one, acid reflux port two, 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 form an acid turbulent circulation system, which circulates the acid in the acid-resistant tank to form a dynamic turbulent state, thereby increasing the pickling efficiency of the workpiece surface.

[0011] A continuous turbulent pickling method with multi-roller conveyor, using the aforementioned continuous turbulent pickling equipment with multi-roller conveyor, comprises the following steps:

[0012] Multiple workpieces are arranged in a group, longitudinally along the conveying direction. Multiple groups of workpieces are arranged front-to-back and sequentially conveyed into the acid-resistant tank by a feeding roller conveyor. Acid in the acid storage tank is pressurized by an acid circulation pump, heated by a graphite heat exchanger, and then enters the acid-resistant tank through the front and rear acid circulation inlets, flowing into the acid-resistant tank between acid overflow guide plate one and acid overflow guide plate two. The acid-resistant and wear-resistant rubber rollers continuously transport the workpieces, which sequentially pass through the anti-acid mist overflow plate one and the acid overflow guide plate two. The contoured holes of Plate 1, Acid Overflow Contour Plate 2, and Anti-Acid Mist Overflow Plate 2 allow the workpiece to be completely immersed in heated acid within the acid-resistant tank between Plate 1 and Plate 2 during the conveying process. This acid pickling process is performed on the workpieces on the acid-resistant and wear-resistant transmission rollers. The acid in the acid-resistant tank is circulated by an acid circulation pump, creating turbulence that scours the surfaces of the workpieces, thus improving pickling efficiency. After pickling, the workpieces are then conveyed to the next process via the discharge roller conveyor, thereby achieving continuous longitudinal pickling.

[0013] Furthermore, the acid in the acid-resistant tank overflows through the shaped holes of the acid overflow profile plate one into the acid-resistant tank body between the acid mist overflow plate one and the acid overflow profile plate one, and then flows back to the acid storage tank through the acid return port one; the acid in the acid-resistant tank overflows through the shaped holes of the acid overflow profile plate two into the acid-resistant tank body 8 between the acid mist overflow plate two and the acid overflow profile plate two, and then flows back to the acid storage tank through the acid return port two.

[0014] Furthermore, the acid mist generated by the acid overflow is blocked by the first and second acid mist overflow prevention plates to prevent acid mist from leaking out from the inlet and outlet of the acid-resistant tank.

[0015] The positive effects of this invention are: improved pickling efficiency, stable pickling quality, reduced labor intensity of operators, improved working environment, prevention of acid mist leakage, and safe production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the anti-acid mist overflow plate structure according to an embodiment of the present invention;

[0018] In the diagram: 1. Feeding roller conveyor; 2. Pickling tank cover; 3. Anti-acid mist overflow plate 1; 4. Workpiece; 5. Acid overflow profile plate 1; 6. Acid-resistant and wear-resistant transmission roller; 7. Front acid circulation inlet; 8. Acid-resistant tank body; 9. Discharge roller conveyor; 10. Acid return port 1; 11. Acid return pipe; 12. Acid circulation inlet pipe; 13. Acid circulation pump; 14. Graphite heat exchanger; 15. Acid storage tank; 16. Acid return port 2; 17. Rear acid circulation inlet; 18. Anti-acid mist overflow plate 2; 19. Acid overflow profile plate 2; 20. Plate body; 21. Profile hole; 22. Inlet; 23. Outlet. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Combined with appendix Figure 1 and 2This embodiment provides a continuous turbulent pickling device with a multi-roller conveyor system, comprising a feeding roller conveyor 1, an anti-acid mist overflow plate 3, an acid overflow contour plate 5, an acid-resistant and wear-resistant transmission roller 6, a front acid circulation inlet 7, an acid-resistant tank 8, a discharge roller conveyor 9, an acid return outlet 10, an acid return pipe 11, an acid circulation inlet pipe 12, an acid circulation pump 13, a graphite heat exchanger 14, an acid storage tank 15, a second acid return outlet 16, a rear acid circulation inlet 17, an anti-acid mist overflow plate 18, and a second acid overflow contour plate 19. The feeding roller conveyor 1 is located outside the inlet of the acid-resistant tank 8, the acid-resistant and wear-resistant transmission roller 6 is located inside the acid-resistant tank 8, and the discharge roller conveyor 9 is located outside the outlet of the acid-resistant tank 8. The feeding roller conveyor, the acid-resistant and wear-resistant transmission roller 6, and the discharge roller conveyor 9 are located on the same... Arranged horizontally, it forms a conveyor roller conveyor for transporting workpiece 4. The bottom of the acid-resistant tank 8 at the inlet and outlet is respectively equipped with an acid return port 10 and an acid return port 16, which are connected to the inlet of the acid storage tank 15 via an acid return pipe 11. The tank wall of the acid-resistant tank 8 is respectively equipped with a front acid circulation inlet 7 and a rear acid circulation inlet 17, which are connected to the outlet of the acid storage tank 15 via an acid circulation inlet pipe 12, an acid circulation pump 13, and a graphite heat exchanger 14. An anti-acid mist overflow plate 3 is installed between the inlet of the acid-resistant tank 8 and the acid return port 10, and an anti-acid mist overflow plate 18 is installed between the outlet of the acid-resistant tank 8 and the acid return port 16. An acid overflow contour plate 5 is installed between the acid return port 10 and the front acid circulation inlet 7. An acid overflow profile plate 19 is provided between the acid return port 16 and the acid circulation inlet 17. The acid mist overflow plate 3, the acid mist overflow plate 18, the acid overflow profile plate 5, and the acid overflow profile plate 19 have the same structure, all consisting of a plate body 20 and profile holes 21. A row of profile holes 21 is horizontally arranged on the plate body 20. The shape and number of profile holes 21 match the cross-sectional shape and number of 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 8. The plate body 20 is arranged perpendicular to the conveying direction of the workpieces 4 being pickled, thus isolating the internal space of the acid-resistant tank 8. Multiple workpieces on the conveying roller pass through the profile holes 21 on the plate body during the conveying process.

[0021] The number of anti-acid mist overflow plate 13, anti-acid mist overflow plate 218, acid overflow profile plate 15, and acid overflow profile plate 219 are multiple and arranged in parallel within the acid-resistant tank 8.

[0022] The anti-acid mist overflow plate 3 and the acid overflow contour plate 5 are arranged near the acid return port 10; the anti-acid mist overflow plate 18 and the acid overflow contour plate 19 are arranged near the acid return port 16.

[0023] The acid-resistant tank 8 has an acid pickling tank cover 2 on top, which, together with the multiple anti-acid mist overflow plates 3 and 18 at the inlet and outlet ends of the acid-resistant tank 8, forms a sealed tunnel acid pickling box.

[0024] Multiple independent acid-resistant and wear-resistant transmission rollers 6 are installed from the inlet to the outlet in the acid-resistant tank 8; multiple workpieces are arranged in a group, and the workpieces are arranged longitudinally along the conveying direction. Multiple groups of multiple workpieces are arranged back and forth and are sequentially conveyed into the acid-resistant tank 8 by the feeding roller conveyor 1. After pickling, they are conveyed to the next process by the discharge roller conveyor 9, thereby realizing continuous longitudinal pickling.

[0025] The acid-resistant tank 8, acid return port 10, acid return port 2 16, acid return 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 form an acid turbulent circulation system, which circulates the acid in the acid-resistant tank 8 to form a dynamic turbulent state, thereby increasing the pickling efficiency of the workpiece surface.

[0026] A continuous turbulent pickling method with multi-roller conveyor, using the aforementioned continuous turbulent pickling equipment with multi-roller conveyor, comprises the following steps:

[0027] Multiple workpieces are arranged in a group, longitudinally along the conveying direction, with multiple groups of multiple workpieces arranged front and back, and sequentially conveyed into the acid-resistant tank 8 by the feeding roller conveyor 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 8 through the front acid circulation inlet 7 and the rear acid circulation inlet 17, entering the acid-resistant tank 8 between the acid overflow profile plate 1 5 and the acid overflow profile plate 2 19; the acid-resistant and wear-resistant rubber roller 6 continuously conveys the workpiece 4, which sequentially passes through the anti-acid mist overflow plate 1 3 and the acid overflow profile plate 2 19. The contour holes 21 of plate 5, acid overflow contour plate 29, and anti-acid mist overflow plate 28 allow the workpiece 4 to be completely immersed in the heated acid in the acid-resistant tank 8 between the acid overflow contour plate 5 and the acid overflow contour plate 29 during the conveying process. The workpiece 4 on the acid-resistant and wear-resistant transmission roller 6 is pickled. The acid in the acid-resistant tank 8 is circulated by the acid circulation pump 13. The acid in the acid-resistant tank 8 forms turbulence, which has a scouring effect on the various surfaces of the workpiece, improving the pickling efficiency. After pickling, the workpiece 4 is then conveyed to the next process by the discharge roller 9, thereby realizing continuous longitudinal pickling.

[0028] The acid in the acid-resistant tank 8 overflows through the contoured holes of the acid overflow contoured plate 5 into the acid-resistant tank 8 between the anti-acid mist overflow plate 3 and the acid overflow contoured plate 5, and then flows back to the acid storage tank 15 through the acid return port 10; the acid in the acid-resistant tank 8 overflows through the contoured holes of the acid overflow contoured plate 2 19 into the acid-resistant tank 8 between the anti-acid mist overflow plate 2 18 and the acid overflow contoured plate 2 19, and then flows back to the acid storage tank 15 through the acid return port 2 16.

[0029] The acid mist generated by the acid overflow is blocked by the acid mist overflow plate 3 and the acid mist overflow plate 18, preventing the acid mist from leaking out from the inlet and outlet of the acid-resistant tank 8.

[0030] The acid mist overflow plate 3 isolates the acid-resistant tank 8 at the inlet into a feeding space. The workpiece 4 enters the acid-resistant tank 8 through the inlet 22 and then passes through the contoured holes of the acid mist overflow plate 3 to enter subsequent processes. The acid mist overflow plate 3 isolates and seals the acid mist inside the acid-resistant tank 8, preventing leakage through the inlet. Because workpieces pass through the contoured holes of the acid mist overflow plate 3, very little acid mist leaks out. Multiple acid mist overflow plates 3 are evenly distributed within this feeding space, further preventing acid mist leakage.

[0031] The anti-acid mist overflow plate 3 and the acid overflow profile plate 5 isolate the acid-resistant tank 8 into a closed acid return space 1. The workpiece 4 entering through the profile hole of the anti-acid mist overflow plate 3 enters the next process through the profile hole of the acid overflow profile plate 5. The acid overflowing from the profile hole of the acid overflow profile plate 5 flows back to the acid storage tank 15 through the acid return port 10 at the bottom of the acid return space 1.

[0032] The acid overflow profile plate 5 and the acid overflow profile plate 19 isolate the acid-resistant tank 8 into a closed pickling space. The workpiece 4, which enters through the profile hole of the acid overflow profile plate 5, is pickled in the pickling space and then enters the next process through the profile hole of the acid overflow profile plate 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 profile holes of the acid overflow profile plate 5 and the acid overflow profile plate 19. There are multiple acid overflow profile plates 5 and 19, which are arranged at the front and rear ends of the pickling space to minimize acid overflow.

[0033] The anti-acid mist overflow plate 2 18 and the acid overflow profile plate 2 19 isolate the acid-resistant tank 8 into a closed acid return space 2. The workpiece 4 entering through the profile hole of the anti-acid mist overflow plate 2 19 enters the next process through the profile hole of the acid overflow profile plate 2 18. The acid overflowing from the profile hole of the acid overflow profile plate 2 19 flows back to the acid storage tank 15 through the acid return port 2 16 at the bottom of the acid return space 2.

[0034] The second anti-acid mist overflow plate 18 isolates the acid-resistant tank 8 at the outlet into a discharge space. The pickled workpiece 4 enters the discharge space through the contoured holes of the second anti-acid mist overflow plate 18 and proceeds to the next process through the outlet 23. The second anti-acid mist overflow plate 18 isolates and seals the acid mist within the acid-resistant tank 8, preventing leakage through the outlet. Because workpieces pass through the contoured holes of the second anti-acid mist overflow plate 18, very little acid mist leaks out. Multiple second anti-acid mist overflow plates 18 are evenly distributed within the discharge space, further preventing acid mist leakage.

[0035] In this embodiment, there are six anti-acid mist overflow plates 3, arranged in parallel to each other in the acid-resistant tank 8 between the inlet 22 and the acid return port 10. There are ten anti-acid mist overflow plates 18, arranged in parallel to each other in the acid-resistant tank 8 between the front acid circulation inlet 7 and the acid return port 10, and positioned close to the acid return port 10.

[0036] The number of acid overflow profile plates 5 is six, arranged in parallel within the acid-resistant tank 8 between outlet 23 and acid return port 16. The number of acid overflow profile plates 19 is ten, arranged in parallel within the acid-resistant tank 8 between rear acid circulation inlet 17 and acid return port 16, and positioned close to acid return port 16.

[0037] The number of contour holes 21 on the plates of the anti-acid mist overflow plate 1-3, anti-acid mist overflow plate 2-18, acid overflow contour plate 1-5, and acid overflow contour plate 2-19 is eighteen, arranged in a row. A set of 18 workpieces are pickled, arranged in a row longitudinally, and each workpiece passes through one contour hole on the plate.

[0038] The workpiece 4 is an angle steel, and the shape of the contour hole 21 is the cross-sectional shape of the angle steel.

Claims

1. A continuous turbulent pickling installation of the multi-roller conveyor type, characterized in that: The acid liquid circulation pump (13), the graphite heat exchanger (14), the acid liquid storage tank (15), the acid liquid backflow port two (16), the rear acid liquid circulation inlet (17), the acid mist overflow prevention plate two (18) and the acid liquid overflow profiling plate two (19), the acid liquid circulation inlet pipeline (12) is communicated with the acid liquid storage tank (15) outlet, the acid liquid backflow pipe (11) is communicated with the acid liquid storage tank (15) inlet, the acid liquid backflow port one (10) and the acid liquid backflow port two (16) are respectively arranged in the groove bottom of the acid tank body (8) inlet and outlet, and the acid mist overflow prevention plate one (3) is arranged between the acid tank body (8) inlet and the acid liquid backflow port one (10), the acid mist overflow prevention plate two (18) is arranged between the acid tank body (8) outlet and the acid liquid backflow port two (16), the acid liquid overflow profiling plate one (5) is arranged between the acid liquid backflow port one (10) and the front acid liquid circulation inlet (7), and the acid liquid overflow profiling plate two (19) is arranged between the acid liquid backflow port two (16) and the rear acid liquid circulation inlet (17), the acid mist overflow prevention plate one (3), the acid mist overflow prevention plate two (18), the acid liquid overflow profiling plate one (5) and the acid liquid overflow profiling plate two (19) are the same structure, which is composed of a plate body (20) and a profiling hole (21), a row of profiling holes (21) are horizontally arranged on the plate body (20), the shape and number of the profiling holes (21) are matched with the cross-sectional shape and number of the workpiece (4), the width and height of the plate body (20) are the same as the internal width and height of the acid tank body (8), the plate body (20) is arranged vertically to the conveying direction of the pickling workpiece (4), the internal space of the acid tank body (8) is isolated, and the multiple workpieces (4) on the conveying roller pass through the profiling holes (21) on the plate body (20) in the conveying process, the acid tank body (8) is provided with a plurality of independent acid-resistant and wear-resistant transmission rollers (6) from the inlet to the outlet, the multiple workpieces are arranged in a group, the workpieces are arranged longitudinally along the conveying direction, and multiple groups of multiple workpieces are arranged in front and back, the workpieces are sequentially conveyed into the acid tank body (8) by the feeding roller (1), and then conveyed to the next process by the discharging roller (9) after pickling, so that continuous longitudinal pickling is realized.

2. A continuous turbulent pickling installation of the multi-roll conveyor type according to claim 1, characterized in that: The number of the acid mist leakage prevention plate one (3), the acid mist leakage prevention plate two (18), the acid liquid overflow profiling plate one (5) and the acid liquid overflow profiling plate two (19) is multiple, and they are arranged in parallel in the acid-resistant tank body (8).

3. A continuous turbulent pickling installation in the form of a multi-roller conveyor according to claim 1 or 2, characterized in that: The acid mist leakage prevention plate one (3) and the acid liquid overflow profiling plate one (5) are arranged close to the acid liquid return port one (10); the acid mist leakage prevention plate two (18) and the acid liquid overflow profiling plate two (19) are arranged close to the acid liquid return port two (16).

4. A continuous turbulent pickling installation of the multi-roller conveyor type according to claim 1 or 2, characterized in that: The acid-resistant tank body (8) has an acid pickling tank cover (2) at the top, and the acid-resistant tank body (8) and the multiple acid mist leakage prevention plate one (3) and the acid mist leakage prevention plate two (18) at both ends of the inlet and outlet of the acid-resistant tank body (8) are combined to form a sealed tunnel acid pickling tank body.

5. A continuous turbulent pickling installation in the form of a multi-roll conveyor according to claim 4, characterized in that: The acid-resistant tank body (8), the acid liquid return port one (10), the acid liquid return port two (16), the acid liquid return pipeline (11), the acid liquid storage tank (15), the acid liquid circulating pump (13), the graphite heat exchanger (14), the acid liquid circulating liquid inlet pipeline (12), the front acid liquid circulating liquid inlet (7) and the rear acid liquid circulating liquid inlet (17) jointly form an acid liquid turbulent flow circulation system, and the acid liquid in the acid-resistant tank body (8) is circulated to form a dynamic turbulent flow state.

6. A continuous turbulent pickling process in the form of a multi-roll conveyor, using a continuous turbulent pickling plant in the form of a multi-roll conveyor according to any one of claims 1 to 5, characterized in that The method comprises the following steps: The multiple groups of multiple workpieces are arranged in sequence on the feeding roller way (1) and then into the acid-resistant tank body (8); the acid liquid in the acid liquid storage tank (15) is pressurized by the acid liquid circulating pump (13) and heated by the graphite heat exchanger (14), and then enters the acid-resistant tank body (8) through the front acid liquid circulating liquid inlet (7) and the rear acid liquid circulating liquid inlet (17) and the acid-resistant tank body (8) between the acid liquid overflow profiling plate one (5) and the acid liquid overflow profiling plate two (19); the acid-resistant and wear-resistant rubber roller (6) continuously transports the workpiece (4), and the workpiece (4) sequentially passes through the profiling holes (21) of the acid mist leakage prevention plate one (3), the acid liquid overflow profiling plate one (5), the acid liquid overflow profiling plate two (19) and the acid mist leakage prevention plate two (18); during the conveying process, the workpiece (4) is completely immersed in the heated acid liquid in the acid-resistant tank body (8) between the acid liquid overflow profiling plate one (5) and the acid liquid overflow profiling plate two (19), the workpiece (4) on the acid-resistant and wear-resistant driving roller (6) is pickled, the acid liquid in the acid-resistant tank body (8) is circulated by the acid liquid circulating pump (13), the acid liquid in the acid-resistant tank body (8) forms a turbulent flow, and each surface of the workpiece is washed to improve the pickling efficiency; after pickling, the workpiece (4) is continuously conveyed to the next process by the discharge roller way (9), so that continuous longitudinal pickling is realized.

7. A continuous turbulent pickling process in the form of a multi-roll conveyor according to claim 6, characterized in that: The acid liquid in the acid-resistant tank body (8) flows through the overflow of the acid liquid overflow profiling plate one (5) to the acid-resistant tank body (8) between the acid mist prevention overflow plate one (3) and the acid liquid overflow profiling plate one (5), and flows back to the acid liquid storage tank (15) through the acid liquid backflow port one (10); the acid liquid in the acid-resistant tank body (8) flows through the overflow of the acid liquid overflow profiling plate two (19) to the acid-resistant tank body (8) between the acid mist prevention overflow plate two (18) and the acid liquid overflow profiling plate two (19), and flows back to the acid liquid storage tank (15) through the acid liquid backflow port two (16).

8. A continuous turbulent pickling process in the form of a multi-roll conveyor according to claim 7, characterized in that: The acid mist generated by the overflow of the acid liquid is blocked by the acid mist prevention overflow plate one (3) and the acid mist prevention overflow plate two (18), so that the acid mist is prevented from leaking out of the inlet and outlet of the acid-resistant tank body (8).

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