A pickling spray production line for sheet material

Abstract

The utility model relates to plate pickling treatment technical field discloses a kind of pickling spray production line for plate, including bottom plate, the top of the bottom plate is fixedly connected with pickling spray tank, the both sides of pickling spray tank are fixedly connected with conveying roller stand and discharge roller stand in the top of the bottom plate, so that the device can filter the metal particles in waste liquid by filter plate, then the filtered waste liquid is pumped into the inside of circulating recovery tank by pumping, and the acidity of waste liquid in the inside of circulating recovery tank is detected using PH sensor, when acidity is too low, it can add acidic solution with higher concentration to the inside of circulating recovery tank by liquid supplementing tank, so that the acidity of solution in the inside of circulating recovery tank can be kept in suitable pickling range, finally, pickling and spraying treatment of plate can be quickly carried out using high-pressure atomizing nozzle at the bottom of spray pipe, so that the acid liquor recovery rate of the device is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of pickling technology for sheet metal, specifically a pickling spray production line for sheet metal. Background Technology

[0002] Plate refers to metal sheets produced by forging, rolling, or casting. Under certain conditions, iron oxide scale will form on the surface of the plate, firmly covering it and concealing surface defects. Directly feeding these plates with iron oxide scale into a cold rolling mill would cause numerous problems. Pickling is necessary to give the plates a clean and active surface, ensuring the surface quality of the produced coils. Pickling is a method of removing oxide scale and rust from the surface of steel using an acid solution, cleaning the metal surface. Currently, plate pickling mainly employs immersion pickling, horizontal closed-loop spray pickling, and 80° vertical pickling methods.

[0003] For example, Chinese patent application number 202021668564.X describes a medium-thick plate spray pickling device. This patent describes a device that uses water pipes to flow into a spray shell and sprays water out through spray heads to evenly spray the medium-thick plate, thereby achieving the spray pickling process for the medium-thick plate and ensuring the pickling effect.

[0004] However, the spray pickling device of the above patent is not easy to recycle and reuse acid during pickling, resulting in a large consumption of acid during pickling spraying, which leads to high pickling cost. Utility Model Content

[0005] The purpose of this utility model is to provide an acid pickling and spraying production line for sheet metal, which solves the problems mentioned in the background art.

[0006] This application provides a pickling and spraying production line for sheet metal, including a base plate. A pickling and spraying box is fixedly connected to the top of the base plate. Conveying roller frames and discharge roller frames are fixedly connected to both sides of the pickling and spraying box on the top of the base plate, respectively. A recycling box is fixedly connected to the top of the pickling and spraying box. A waste liquid tank is fixedly connected to the bottom of the inner cavity of the pickling and spraying box. An installation frame is fixedly connected inside the waste liquid tank. A filter plate is fixedly connected inside the installation frame through a wedge-shaped locking mechanism. A pump is fixedly connected to one side of the pickling and spraying box. Spray pipes are fixedly connected to both the upper and lower ends inside the pickling and spraying box. A bifurcated return pipe is fixedly connected to the other side of the recycling box. The other end of the bifurcated return pipe extends into the interior of the pickling and spraying box and is fixedly connected to the spray pipe. A stirring shaft is rotatably connected inside the recycling box through a hydraulic drive mechanism. The pump is model 25FYH-15A.

[0007] By adopting the above technical solution, the acid solution sprayed by this device can be recycled through the acid solution circulation system, thereby greatly improving the acid solution recovery rate of this device and effectively reducing the acid washing cost of this device.

[0008] Optionally, the hydraulic drive mechanism includes a water turbine box installed on one side of the recycling tank. A drive disc is rotatably installed inside the water turbine box. Multiple sets of water turbine blades are fixedly connected to the outer surface of the drive disc. A water turbine shaft is fixedly connected inside the drive disc. The other end of the water turbine shaft extends into the interior of the recycling tank and is fixedly connected to the stirring shaft. The inlet and outlet ports on the upper and lower sides of the water turbine box are located on the left and right sides of the center line of the water turbine box, respectively, so that the water pressure can better drive the water turbine blades to rotate.

[0009] By adopting the above technical solution, this device can recycle acid while driving the stirring shaft to rotate through a hydraulic drive mechanism. This allows the stirring shaft to drive the stirring blades to stir the liquid inside the recycling tank, thereby enabling the high-concentration acid solution to be more fully and evenly mixed with the low-acid waste liquid during the replenishment process, thus greatly improving the pickling quality of this device.

[0010] Optionally, the wedge-shaped locking mechanism includes an installation groove inside the mounting frame and multiple sets of locking blocks installed on the outer surface of the filter plate. Multiple sets of fixing plates are fixedly connected to the top of the inner cavity of the installation groove. A locking groove adapted to the locking block is opened on one side of the fixing plate. A wedge block is slidably installed on the top of the locking groove. A wedge groove adapted to the wedge block is opened on the top of the locking block.

[0011] By adopting the above technical solution, the device can quickly fix the filter plate through the wedge-shaped locking mechanism, which greatly facilitates the installation and disassembly of the filter plate by the operator, and thus greatly improves the efficiency of the operator in replacing and cleaning the filter plate.

[0012] Optionally, a pH sensor is fixedly connected to one side of the recycling bin, and two external pipes are fixedly connected to one side of the pH sensor, with the other end of the external pipes extending into the interior of the recycling bin. The pH sensor is a PH8010 model.

[0013] By adopting the above technical solution, the pH sensor can be used to detect the acidity or alkalinity of the waste liquid inside the recycling tank.

[0014] Optionally, multiple sets of high-pressure atomizing nozzles are fixedly connected to each of the two spray pipes on opposite sides.

[0015] By adopting the above technical solution, the high-pressure atomizing nozzle at the bottom of the spray pipe can be used to better perform acid pickling spraying treatment on the board.

[0016] Optionally, a replenishment tank is fixedly connected to the top of the recycling tank, and a pipe for replenishing liquid is provided between the replenishment tank and the recycling tank. A flow valve is provided on the outer surface of the replenishment pipe, and the flow valve, pH sensor and control device are connected in series to form a closed circuit.

[0017] By adopting the above technical solution, a high concentration of acid solution can be added to the recycling tank using the replenishment tank, thereby ensuring that the acidity of the waste liquid is within a suitable pickling range.

[0018] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0019] This technical solution incorporates a recycling tank, a replenishment tank, a pump, a waste liquid tank, a filter plate, and a pH sensor. The device filters metal particles from the waste liquid using the filter plate, then pumps the filtered waste liquid into the recycling tank. The pH sensor monitors the acidity or alkalinity of the waste liquid inside the recycling tank. If the acidity is too low, a higher concentration of acidic solution is added to the recycling tank through the replenishment tank, ensuring the acidity remains within a suitable pickling range. Finally, a high-pressure atomizing nozzle at the bottom of the spray pipe rapidly sprays the plates for pickling, significantly improving the acid recovery rate and effectively reducing the pickling cost.

[0020] The technical solution of this application, by setting up a water turbine box, water turbine blades, water turbine shaft and stirring shaft, enables the device to recycle acid while driving the stirring shaft to rotate through a hydraulic drive mechanism. This allows the stirring shaft to drive the stirring blades to stir the liquid inside the recycling tank, thereby enabling the high-concentration acid solution to be more fully and evenly mixed with the low-acid waste liquid during the replenishment process, thus greatly improving the pickling quality of the device.

[0021] The technical solution of this application, by setting up an installation frame, filter plate, fixing plate, locking block, locking slot, wedge block and wedge groove, enables the device to quickly fix the filter plate through the wedge locking mechanism, thereby greatly facilitating the installation and disassembly of the filter plate by the operator, and thus greatly improving the efficiency of the operator in replacing and cleaning the filter plate. Attached Figure Description

[0022] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0023] Figure 1This is a three-dimensional structural diagram of the pickling and spraying production line for sheet metal according to this utility model;

[0024] Figure 2 This is a schematic diagram of the overall internal structure of a pickling and spraying production line for sheet metal according to the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the water turbine box in a pickling and spraying production line for sheet metal according to this utility model;

[0026] Figure 4 This utility model relates to an acid pickling and spraying production line for sheet metal. Figure 2 Enlarged view of point A in the middle.

[0027] In the diagram: 1. Base plate; 2. Pickling spray box; 3. Conveying roller frame; 4. Discharge roller frame; 5. Circulation and recovery box; 6. Replenishment tank; 7. Pump; 8. Water turbine box; 9. Waste liquid tank; 10. Mounting frame; 11. Filter plate; 12. Spray pipe; 13. Branching return pipe; 14. pH sensor; 15. Drive disc; 16. Water turbine blades; 17. Water turbine shaft; 18. Stirring shaft; 19. Fixing plate; 20. Locking block; 21. Locking slot; 22. Wedge block; 23. Wedge groove. Detailed Implementation

[0028] Please see Figure 1-4 This utility model provides a technical solution: a pickling and spraying production line for sheet metal, including a base plate 1, a pickling and spraying box 2 fixedly connected to the top of the base plate 1, a conveying roller frame 3 and a discharge roller frame 4 fixedly connected to both sides of the top of the base plate 1 located in the pickling and spraying box 2, a recycling box 5 fixedly connected to the top of the pickling and spraying box 2, a waste liquid tank 9 fixedly connected to the bottom of the inner cavity of the pickling and spraying box 2, and an installation frame 10 fixedly connected inside the waste liquid tank 9. The installation frame 10 is connected to a wedge-shaped locking machine. A filter plate 11 is fixedly connected to the structure. A liquid pump 7 is fixedly connected to one side of the pickling spray box 2. Spray pipes 12 are fixedly connected to both the upper and lower ends inside the pickling spray box 2. A bifurcated return pipe 13 is fixedly connected to the other side of the circulation recovery box 5. The other end of the bifurcated return pipe 13 extends into the interior of the pickling spray box 2 and is fixedly connected to the spray pipe 12. A stirring shaft 18 is rotatably connected inside the circulation recovery box 5 through a hydraulic drive mechanism. The model of the liquid pump 7 is 25FYH-15A / B.

[0029] By adopting the above technical solution, the acid solution sprayed by this device can be recycled through the acid solution circulation system, thereby greatly improving the acid solution recovery rate of this device and effectively reducing the acid washing cost of this device.

[0030] Furthermore, the hydraulic drive mechanism includes a water turbine box 8 installed on one side of the circulation and recycling tank 5. A drive disc 15 is rotatably installed inside the water turbine box 8. Multiple sets of water turbine blades 16 are fixedly connected to the outer surface of the drive disc 15. A water turbine shaft 17 is fixedly connected inside the drive disc 15. The other end of the water turbine shaft 17 extends into the interior of the circulation and recycling tank 5 and is fixedly connected to the stirring shaft 18. The water inlet and outlet on the upper and lower sides of the water turbine box 8 are located on the left and right sides of the center line of the water turbine box 8, respectively, so that the water pressure can better drive the water turbine blades 16 to rotate.

[0031] By adopting the above technical solution, the device can recycle acid while driving the stirring shaft 18 to rotate through the hydraulic drive mechanism. This allows the stirring shaft 18 to drive the water turbine blades 16 to stir the liquid inside the recycling tank 5, thereby enabling the high-concentration acid solution to be more fully and evenly mixed with the low-acid waste liquid during the replenishment process, thus greatly improving the pickling quality of the device.

[0032] Furthermore, the wedge-shaped locking mechanism includes an installation groove inside the mounting bracket 10 and multiple sets of locking blocks 20 installed on the outer surface of the filter plate 11. Multiple sets of fixing plates 19 are fixedly connected to the top of the inner cavity of the installation groove. A locking groove 21 adapted to the locking block 20 is provided on one side of the fixing plate 19. A wedge block 22 is slidably installed on the top of the locking groove 21. A wedge groove 23 adapted to the wedge block 22 is provided on the top of the locking block 20.

[0033] By adopting the above technical solution, the device can quickly fix the filter plate 11 through the wedge-shaped locking mechanism, which greatly facilitates the installation and disassembly of the filter plate 11 by the operator, and thus greatly improves the efficiency of the operator in replacing and cleaning the filter plate 11.

[0034] Furthermore, a pH sensor 14 is fixedly connected to one side of the recycling bin 5, and two external pipes are fixedly connected to one side of the pH sensor 14, with the other end of the external pipes extending into the interior of the recycling bin 5. The pH sensor 14 is a PH8010.

[0035] By adopting the above technical solution, the pH sensor 14 can be used to detect the acidity or alkalinity of the waste liquid inside the recycling tank 5.

[0036] Furthermore, multiple sets of high-pressure atomizing nozzles are fixedly connected to each side of the two spray pipes 12.

[0037] By adopting the above technical solution, the high-pressure atomizing nozzle at the bottom of the spray pipe can be used to better perform acid pickling spraying treatment on the board.

[0038] Furthermore, a replenishment tank 6 is fixedly connected to the top of the recycling tank 5, and a pipe for replenishing liquid is provided between the replenishment tank 6 and the recycling tank 5. A flow valve is provided on the outer surface of the replenishment pipe, and the flow valve, pH sensor 14 and control device are connected in series to form a closed circuit through wires.

[0039] By adopting the above technical solution, a high concentration of acid solution can be added to the circulation recovery tank 5 using the replenishment tank 6, thereby ensuring that the acidity of the waste liquid is within a suitable pickling range.

[0040] In operation, the operator can transport the sheet metal to the pickling spray tank 2 via the conveyor roller frame 3. Then, the high-pressure atomizing nozzle at the bottom of the spray pipe 12 can quickly perform pickling spraying on the sheet metal. During the spraying process, the waste liquid will flow back to the waste liquid tank 9 under gravity. During this flow, metal particles in the waste liquid will be filtered out by the filter plate 11. The filtered waste liquid is then pumped into the recycling tank 5 by the pump 7. The pH sensor 14 detects the acidity or alkalinity of the waste liquid in the recycling tank 5. If the acidity is too low, a higher concentration of acid solution can be added to the recycling tank 5 via the replenishment tank 6 to ensure that the acidity of the solution in the recycling tank 5 is maintained within a suitable pickling range. The recovered acid solution is then guided back into the spray pipe 12 through the branched return pipe 13, thereby greatly improving the acid recovery rate of this device and effectively reducing the pickling cost. During the pumping process, the liquid passes through the water turbine tank 8, thus ensuring that the liquid inside the water turbine tank 8... The water turbine blades 16 rotate under water pressure, which in turn drives the drive disc 15 to rotate. When the drive disc 15 rotates, it drives the stirring shaft 18 to rotate through the water turbine shaft 17. This allows the stirring shaft 18 to drive the stirring blades to stir the liquid inside the circulating recovery tank 5, thus enabling the more concentrated acidic solution to be more thoroughly and evenly mixed with the less acidic waste liquid during the replenishment process. This greatly improves the pickling quality of the device. When the filter plate 11 needs to be replaced or cleaned, the operator can first pull the wedge block 22 out of the wedge groove 23, then rotate the filter plate 11 to pull the locking block 20 out of the locking groove 21, and then pull the filter plate 11 out of the mounting bracket 10. Similarly, the operator can quickly fix the new filter plate 11 inside the mounting bracket 10, which greatly facilitates the installation and removal of the filter plate 11 and greatly improves the efficiency of the operator in replacing and cleaning the filter plate 11.

Claims

1. A pickling and spraying production line for sheet metal, comprising a base plate (1), characterized in that: A pickling spray box (2) is fixedly connected to the top of the base plate (1). Conveying roller frame (3) and discharge roller frame (4) are fixedly connected to the top of the base plate (1) on both sides of the pickling spray box (2). A recycling box (5) is fixedly connected to the top of the pickling spray box (2). A waste liquid tank (9) is fixedly connected to the bottom of the inner cavity of the pickling spray box (2). An installation frame (10) is fixedly connected inside the waste liquid tank (9). The installation frame (10) is fixedly connected inside by a wedge-shaped locking mechanism. A filter plate (11) is connected to the pickling spray box (2). A liquid pump (7) is fixedly connected to one side of the pickling spray box (2). Spray pipes (12) are fixedly connected to both the upper and lower ends inside the pickling spray box (2). A bifurcated return pipe (13) is fixedly connected to the other side of the circulation recovery box (5). The other end of the bifurcated return pipe (13) extends into the interior of the pickling spray box (2) and is fixedly connected to the spray pipe (12). A stirring shaft (18) is rotatably connected to the interior of the circulation recovery box (5) through a hydraulic drive mechanism.

2. The pickling and spraying production line for sheet metal according to claim 1, characterized in that: The hydraulic drive mechanism includes a water turbine box (8) installed on one side of the recycling tank (5). A drive disc (15) is rotatably installed inside the water turbine box (8). Multiple sets of water turbine blades (16) are fixedly connected to the outer surface of the drive disc (15). A water turbine shaft (17) is fixedly connected inside the drive disc (15). The other end of the water turbine shaft (17) extends into the interior of the recycling tank (5) and is fixedly connected to the stirring shaft (18).

3. The pickling and spraying production line for sheet metal according to claim 1, characterized in that: The wedge-shaped locking mechanism includes an installation groove inside the mounting frame (10) and multiple sets of locking blocks (20) installed on the outer surface of the filter plate (11). Multiple sets of fixing plates (19) are fixedly connected to the top of the inner cavity of the installation groove. A locking groove (21) adapted to the locking block (20) is opened on one side of the fixing plate (19). A wedge block (22) is slidably installed on the top of the locking groove (21). A wedge groove (23) adapted to the wedge block (22) is opened on the top of the locking block (20).

4. The pickling and spraying production line for sheet metal according to claim 1, characterized in that: A pH sensor (14) is fixedly connected to one side of the recycling bin (5), and two external pipes are fixedly connected to one side of the pH sensor (14), with the other end of the external pipes extending into the interior of the recycling bin (5).

5. The pickling and spraying production line for sheet metal according to claim 1, characterized in that: Multiple sets of high-pressure atomizing nozzles are fixedly connected to each side of the two spray pipes (12).

6. The pickling and spraying production line for sheet metal according to claim 1, characterized in that: The top of the recycling tank (5) is fixedly connected to a replenishment tank (6), and a pipe for replenishing liquid is provided between the replenishment tank (6) and the recycling tank (5).

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