A stainless steel pickling system for efficient oxide removal

Abstract

The present application discloses a stainless steel pickling system for efficiently removing oxides, comprising two end pickling tanks and a plurality of intermediate pickling tanks located between the two end pickling tanks, wherein one end of the end pickling tank is open and the other end is closed, and a guide roller and two limit guide rollers are installed in the end pickling tank; the intermediate pickling tank comprises a tank body, a drive unit, an active tank cover and two passive tank covers. In the pickling system of the present application, the strip steel passes through a plurality of intermediate pickling tanks during pickling, so that it is immersed in the pickling liquid for a long time, thereby achieving a better pickling effect, effectively removing oxides and other impurities on the surface of the strip steel, and improving the surface quality of the strip steel. The pickling tank adopts a V-shaped bottom, so that the strip steel moves more smoothly in the pickling tank. The drive unit can drive the second cover to partially open, and can also drive the active tank cover and the two passive tank covers to open synchronously, so as to facilitate the selection of the tank cover opening amplitude according to needs, while ensuring the efficiency and safety of the operator.

Description

Technical Field

[0001] The invention relates to the technical field of stainless steel pickling systems, and more specifically to a stainless steel pickling system for efficiently removing oxides. Background Art

[0002] Stainless steel pickling is an important surface treatment method for steel, which is widely used in steel products, auto parts, ships, building materials and other fields. The surface of stainless steel strip often produces scale and rust due to long-term exposure to air. These oxides will affect the mechanical properties and corrosion resistance of steel. Pickling can remove these oxides and improve the brightness and flatness of the steel surface.

[0003] The existing stainless steel pickling system needs to open the stainless steel pickling tank cover for inspection and maintenance. When the tank cover is opened, each tank cover needs to be equipped with an independent drive mechanism. The number of drive mechanisms will increase with the increase in the number of tank covers, resulting in a complex drive mechanism. This not only increases the maintenance cost and difficulty of the equipment, but also may affect the efficiency and safety of the operator. Each drive mechanism needs to be regularly inspected, maintained and repaired, and the increase in the number will make this process more complicated and time-consuming. In addition, the tank cover cannot be opened in a small amplitude, so when checking the state in the tank, the opening amplitude is too large, which may have an adverse effect on the pickling operation itself. First, an excessively large opening amplitude will expose the pickling tank to the outside, making it susceptible to the invasion of external pollutants, thereby affecting the purity and composition of the pickling solution and causing a decrease in the pickling effect. Secondly, an excessively large opening amplitude will also cause the gas in the pickling tank to escape, affecting the stability of the pickling environment, and further affecting the accuracy and consistency of the pickling results. Summary of the invention

[0004] The invention aims to overcome the defects of the prior art and provide a stainless steel pickling system for efficiently removing oxides.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stainless steel pickling system, comprising two end pickling tanks and a plurality of intermediate pickling tanks distributed in a row between the two end pickling tanks, and two adjacent intermediate pickling tanks are connected to each other; one end of the end pickling tank is open and the other end is closed, and a guide roller and two limiting guide rollers are installed in the end pickling tank; the intermediate pickling tank comprises a tank body, a driving unit, an active tank cover and two passive tank covers, the active tank cover is located between the two passive tank covers, and the active tank cover and the passive tank cover are both hinged to the tank body.

[0006] Furthermore, the stainless steel strip is located above the guide roller and between the two limiting guide rollers.

[0007] The guide roller guides the movement of the stainless steel strip, and the two limiting guide rollers limit its position.

[0008] Furthermore, a first liquid inlet pipe and a first liquid discharge pipe are installed at the end pickling tank, the first liquid inlet pipe is provided with a first liquid inlet pipe valve, and the first liquid discharge pipe is provided with a first liquid discharge pipe valve.

[0009] Furthermore, a second liquid inlet pipe and a second liquid discharge pipe are installed at the intermediate pickling tank, the second liquid inlet pipe is provided with a second liquid inlet pipe valve, and the second liquid discharge pipe is provided with a second liquid discharge pipe valve.

[0010] This makes it easier for the pickling liquid to enter the tank, flow and discharge.

[0011] Furthermore, the active slot cover includes a first cover portion and a second cover portion hinged to the first cover portion, a mounting seat is installed at the second cover portion, and a mounting block is installed at the mounting seat; a first abutment plate is fixedly installed at the first cover portion, and a second abutment plate is fixedly installed at the passive slot cover, one end of the second abutment plate extends to the top of the active slot cover, and the second cover portion can abut the first abutment plate and two second abutment plates at the same time; the driving unit includes a mounting plate fixedly connected to the slot body, a fixed pulley is installed at the mounting plate through a mounting frame, and an electric winding unit is also installed at the mounting plate, and a pull rope passing through the fixed pulley is connected between the electric winding unit and the mounting block.

[0012] Thus, the automatic opening and closing of the slot cover can be achieved by controlling the tightening and loosening of the draw cord through the electric winding unit.

[0013] Furthermore, there are two of each of the driving unit and the mounting seat.

[0014] This makes the driving unit's driving of the active slot cover more stable.

[0015] In some embodiments, the mounting block is rotatable relative to the mounting seat, and the mounting block has a rope threading hole that cooperates with the pull rope.

[0016] Thereby, the mounting block can be rotated, and thus the position of the rope threading hole can be rotated, so as to better match the pull rope.

[0017] Further, the driving unit can make the intermediate pickling tank be in a closed state, a first open state and a second open state; in the closed state, the first cover part, the second cover part and the two passive slot covers all abut the top of the tank body; in the first open state, the first cover part and the two passive slot covers all abut the top of the tank body, and the second cover part abuts the first abutment plate; in the second open state, the second cover part abuts the first abutment plate and the two second abutment plates at the same time, the opening angles of the first cover part and the two passive slot covers are the same, and the angles between the first cover part and the two passive slot covers and the horizontal plane are both greater than or equal to 80 degrees.

[0018] Thus, the driving unit can drive the second cover to partially open, and can also drive the active slot cover and the two passive slot covers to open synchronously, so that the opening amplitude of the slot covers can be selected according to needs.

[0019] Furthermore, the bottom of the end pickling tank is in a V-shape with high sides and low middle; the bottom of the tank body of the middle pickling tank is in a V-shape with high sides and low middle.

[0020] Thereby, the stainless steel strip can move more smoothly in the pickling tank.

[0021] Furthermore, the first cover portion and the passive slot cover both have a plurality of first reinforcing ribs and a plurality of second reinforcing ribs.

[0022] Thereby, the strength of the first cover portion and the passive slot cover is enhanced.

[0023] Furthermore, the passive slot cover and the first cover portion are both hinged to the slot body via a hinged frame, the hinged frame includes a fixed arm and a rotating arm, one end of the fixed arm is hinged to one end of the rotating arm, the fixed arm is fixedly connected to the slot body, and the rotating arm is fixedly connected to the passive slot cover or the first cover portion.

[0024] Thereby, the passive slot cover and the first cover part can be opened synchronously with the second cover part.

[0025] Furthermore, a crossbeam is installed at one end of the trough body, and a liquid spraying unit is installed on both sides of the crossbeam, and the liquid spraying unit has a row of nozzles.

[0026] Thereby, the pickling liquid can be sprayed to both sides of the beam portion, thereby forming a turbulent flow, thereby achieving a better pickling effect.

[0027] Beneficial effects:

[0028] 1. In the pickling system of the present application, the strip steel passes through multiple intermediate pickling tanks during pickling, and is thus immersed in the pickling liquid for a long time, thereby achieving a better pickling effect, effectively removing oxides and other impurities on the surface of the strip steel, and improving the surface quality of the strip steel.

[0029] 2. In the pickling system of the present application, the pickling tank adopts a V-shaped bottom, so that the strip in the pickling tank is slightly bent downward in the middle relative to the two sides, reducing the contact area between the strip and the bottom of the pickling tank and reducing the friction, so that the strip is easier to move at the bottom of the V-shaped groove, and the strip moves more smoothly in the pickling tank.

[0030] 3. In the pickling system of the present application, the driving unit can drive the second cover to be partially opened, so as to facilitate the maintenance personnel to observe the state of the strip steel and the state of the pickling liquid in the tank body, and also facilitate the sampling and analysis of the pickling liquid. The partial opening can reduce the interference with the pickling operation.

[0031] 4. In the pickling system of the present application, the driving unit can drive the active tank cover and the two passive tank covers to open synchronously, so that the driving unit can synchronously open the active tank cover and the passive tank cover, thereby facilitating more complex operations on the tank body. In addition, the control of different tank covers can optimize the number of driving mechanisms, reduce equipment costs, and ensure the efficiency and safety of operators. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the pickling system, with some of the intermediate pickling tanks omitted;

[0033] Figure 2 Schematic diagram of the closed state of the intermediate pickling tank;

[0034] Figure 3 for Figure 2 A magnified schematic diagram of the middle A area;

[0035] Figure 4 Schematic diagram of the first opening state of the intermediate pickling tank;

[0036] Figure 5 for Figure 4 A magnified schematic diagram of the middle B area;

[0037] Figure 6 This is a schematic diagram of the intermediate pickling tank in the second open state.

[0038] Explanation of the reference numerals: 1 end pickling tank; 1.1 guiding guide roller; 1.2 limiting guide roller; 2 intermediate pickling tank; 3 first cover; 3.1 first abutment plate; 4 second cover; 4.1 mounting seat; 4.2 mounting block; 5 passive tank cover; 5.1 second abutment plate; 6.1 mounting plate; 6.2 mounting frame; 6.3 fixed pulley; 6.4 electric winding unit; 6.5 pull rope; 7.1 first reinforcing rib; 7.2 second reinforcing rib; 8.1 fixed arm; 8.2 rotating arm. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0040] The present invention provides Figure 1-6 A stainless steel pickling system for efficiently removing oxides is shown, comprising two end pickling tanks 1 and a plurality of intermediate pickling tanks 2 arranged in a row between the two end pickling tanks 1, wherein two adjacent intermediate pickling tanks 2 are connected to each other; one end of the end pickling tank 1 is open and the other end is closed, and a guide roller 1.1 and two limiting guide rollers 1.2 are installed in the end pickling tank 1; the intermediate pickling tank 2 comprises a tank body, a driving unit, an active tank cover and two passive tank covers 5, wherein the active tank cover is located between the two passive tank covers 5, and the active tank cover and the passive tank cover 5 are both hinged to the tank body.

[0041] The active slot cover comprises a first cover portion 3 and a second cover portion 4 hinged to the first cover portion, a mounting seat 4.1 is installed at the second cover portion 4, and a mounting block 4.2 is installed at the mounting seat 4.1; a first abutment plate 3.1 is fixedly installed at the first cover portion 3, and a second abutment plate 5.1 is fixedly installed at the passive slot cover 5, one end of the second abutment plate 5.1 extends to the top of the active slot cover, and the second cover portion 4 can abut the first abutment plate 3.1 and two second abutment plates 5.1 at the same time; the driving unit comprises a mounting plate 6.1 fixedly connected to the slot body, a fixed pulley 6.3 is installed at the mounting plate 6.1 through a mounting frame 6.2, and an electric winding unit 6.4 is also installed at the mounting plate 6.1, and a pull rope 6.5 passing through the fixed pulley 6.3 is connected between the electric winding unit 6.4 and the mounting block 4.2.

[0042] The driving unit can make the intermediate pickling tank 2 be in a closed state, a first open state and a second open state; in the closed state, the first cover part 3, the second cover part 4 and the two passive slot covers 5 all abut the top of the tank body; in the first open state, the first cover part 3 and the two passive slot covers 5 all abut the top of the tank body, and the second cover part 4 abuts the first abutment plate 3.1; in the second open state, the second cover part 4 abuts the first abutment plate 3.1 and the two second abutment plates 5.1 at the same time, the opening angles of the first cover part 3 and the two passive slot covers 5 are the same, and the angles between the first cover part 3 and the two passive slot covers 5 and the horizontal plane are both greater than or equal to 80 degrees.

[0043] The end pickling tank 1 is provided with a first liquid inlet pipe and a first liquid discharge pipe, the first liquid inlet pipe is provided with a first liquid inlet pipe valve, and the first liquid discharge pipe is provided with a first liquid discharge pipe valve; the middle pickling tank 2 is provided with a second liquid inlet pipe and a second liquid discharge pipe, the second liquid inlet pipe is provided with a second liquid inlet pipe valve, and the second liquid discharge pipe is provided with a second liquid discharge pipe valve; the bottom of the end pickling tank 1 is in a V-shape with high sides and low middle; the bottom of the tank body of the middle pickling tank 2 is in a V-shape with high sides and low middle; the first cover part 3 and the passive tank cover 5 are both provided with a plurality of first reinforcing ribs 7.1 and a plurality of second reinforcing ribs 7.2; the passive tank cover 5 and the first cover part 3 are both hinged to the tank body through a hinged frame, and the hinged frame comprises a fixed arm 8.1 and a rotating arm 8.2, one end of the fixed arm 8.1 is hinged to one end of the rotating arm 8.2, the fixed arm 8.1 is fixedly connected to the tank body, and the rotating arm 8.2 is fixedly connected to the passive tank cover 5 or the first cover part 3.

[0044] Working principle: In the pickling system of the present application, the strip passes through multiple intermediate pickling tanks during pickling, so that it is immersed in the pickling liquid for a long time, thereby achieving a better pickling effect, effectively removing oxides and other impurities on the surface of the strip, and improving the surface quality of the strip. The pickling tank adopts a V-shaped bottom, so that the strip is slightly bent downward in the middle relative to the two sides in the pickling tank, reducing the contact area between the strip and the bottom of the pickling tank, reducing the friction, so that the strip is easier to move at the bottom of the V-shaped groove, so that the strip walks more smoothly in the pickling tank. The drive unit can drive the second cover to partially open, so that it is convenient for maintenance personnel to observe the state of the strip and the state of the pickling liquid in the tank body, and it is also convenient to sample and analyze the pickling liquid, and the partial opening can reduce the interference with the pickling operation, ensuring the safety and efficiency of the pickling operation. The drive unit can also drive the active tank cover and the two passive tank covers to open synchronously, so that the active tank cover and the passive tank cover can be opened synchronously by using the drive unit, so as to facilitate more complex operations on the tank body. In addition, the control of different slot covers can optimize the number of driving mechanisms, reduce equipment costs, and ensure the efficiency and safety of operators.

[0045] Specifically, Figure 4-5 As shown, by retracting the rope with the electric winding unit, the active slot cover can be switched from the closed state to the first open state, at which time the first cover and the two passive slot covers are both against the top of the slot body, and the second cover is against the first abutment plate, so that the second cover is partially opened. Figure 6As shown, by continuing to reel in the rope through the electric winding unit, the active slot cover can be switched from the first open state to the second open state. At this time, the second cover part abuts against the first abutment plate and the two second abutment plates at the same time, and the opening angles of the first cover part and the two passive slot covers are the same, and the angles between the first cover part and the two passive slot covers and the horizontal plane are greater than or equal to 80 degrees. This facilitates more complex operations on the slot body. When pulling the rope to release the rope, under the action of the gravity of the slot cover, it can be restored from the second open state to the first open state, and then restored to the closed state.

[0046] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A stainless steel pickling system for efficiently removing oxides, characterized in that: The invention comprises two end pickling tanks and a plurality of intermediate pickling tanks arranged in a row between the two end pickling tanks, and two adjacent intermediate pickling tanks are connected to each other; one end of the end pickling tank is open and the other end is closed, and a guide roller and two limit guide rollers are installed in the end pickling tank; the intermediate pickling tank comprises a tank body, a driving unit, an active tank cover and two passive tank covers, and the active tank cover is located between the two passive tank covers, and the active tank cover and the passive tank cover are both hinged to the tank body; a first liquid inlet pipe and a The first liquid discharge pipe, the first liquid inlet pipe has a first liquid inlet pipe valve, the first liquid discharge pipe has a first liquid discharge pipe valve; the second liquid inlet pipe and the second liquid discharge pipe are installed at the intermediate pickling tank, the second liquid inlet pipe has a second liquid inlet pipe valve, the second liquid discharge pipe has a second liquid discharge pipe valve; the active tank cover includes a first cover part and a second cover part hinged to the first cover part, the second cover part is installed with a mounting seat, the mounting seat is installed with a mounting block; the first cover part is fixedly installed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the passive tank cover is fixed with a first abutment plate, the active tank cover includes a first abutment plate, the first liquid inlet pipe and the second liquid inlet pipe valve, the second liquid inlet pipe has a second liquid discharge pipe valve, the active tank cover includes a first abutment plate, the first liquid inlet pipe and the second liquid discharge pipe valve; ... passive tank cover is fixed A second abutment plate is fixedly installed, one end of which extends to the top of the active slot cover, and the second cover can abut the first abutment plate and the two second abutment plates at the same time; the driving unit includes a mounting plate fixedly connected to the slot body, a fixed pulley is installed at the mounting plate through a mounting frame, and an electric winding unit is also installed at the mounting plate, and a pull rope passing through the fixed pulley is connected between the electric winding unit and the mounting block; the driving unit can make the intermediate pickling tank in a closed state, a first open state and a second open state; in the closed state, the first cover, the second cover and the two passive slot covers all abut the top of the slot body; in the first open state, the first cover and the two passive slot covers all abut the top of the slot body, and the second cover abuts the first abutment plate; in the second open state, the second cover abuts the first abutment plate and the two second abutment plates at the same time, the opening angles of the first cover and the two passive slot covers are the same, and the angles between the first cover and the two passive slot covers and the horizontal plane are greater than or equal to 80 degrees.

2. The stainless steel pickling system for efficiently removing oxides according to claim 1 is characterized in that: The bottom of the end pickling tank is in a V-shape with high sides and low middle; the bottom of the tank body of the middle pickling tank is in a V-shape with high sides and low middle.

3. The stainless steel pickling system for efficiently removing oxides according to claim 1 is characterized in that: The first cover portion and the passive slot cover both have a plurality of first reinforcing ribs and a plurality of second reinforcing ribs.

4. The stainless steel pickling system for efficiently removing oxides according to claim 1 is characterized in that: The passive slot cover and the first cover part are both hinged to the slot body through a hinged frame, and the hinged frame includes a fixed arm and a rotating arm, one end of the fixed arm is hinged to one end of the rotating arm, the fixed arm is fixedly connected to the slot body, and the rotating arm is fixedly connected to the passive slot cover or the first cover part.

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