Automatic pickling line for metallurgical sample plate

Abstract

An automatic pickling line for metallurgical sample plates comprises a pickling device, a drying device, a manipulator, a fluid system and an electric control system, and is characterized in that the pickling device is a box frame (9), a cold water tank (5), an acid tank (6), an alkali tank (7) and a cleaning tank (8) are sequentially arranged in the box frame, and the drying device comprises a fan, a heating system, a drying tank and a temperature control system. The mechanical arm is a monorail type mobile mechanical arm, the fluid system comprises an automatic neutralization treatment and discharge unit for waste liquid generated by pickling and an automatic liquid adding, liquid supplementing and liquid preparing unit for a working tank, and the electric control system comprises an automatic pickling control unit and communicates with all equipment through a PN network. The automatic pickling line for the metallurgical sample plate has the advantages that the automatic pickling function is achieved, equipment arrangement is compact, neat and attractive, the occupied area is small, modular installation of the equipment is achieved, overhaul and maintenance are convenient, unmanned intelligent manufacturing is achieved, liquid supplementing and discharging of special media are automatically completed, and energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This utility model relates to a pickling line, specifically, an automatic pickling line for metallurgical samples. Background Technology

[0002] Pickling is a process in steel metallurgy aimed at removing oxide scale from steel plates in preparation for further rolling. Current production methods rely on manual operation.

[0003] Therefore, in the existing technology, considering the special nature of the medium, operator safety, production efficiency, energy saving and environmental protection, etc., how to realize the full automation, unmanned operation and digital intelligent manufacturing of the entire process of taking samples from the inspection table, cooling, pickling, alkali washing and rinsing in sequence according to the production process requirements, surface blowing and drying treatment, and finally placing the samples on the discharge roller conveyor has become an urgent technical problem to be solved in this field. Utility Model Content

[0004] The purpose of this invention is to propose a safe and reliable automatic pickling line for metallurgical samples.

[0005] To achieve the above objectives, the technical solution of this utility model is:

[0006] An automated pickling line for metallurgical samples includes a pickling device, a drying device, a robotic arm, a fluid system, and an electrical control system, characterized in that:

[0007] The pickling device is a box frame, in which a cold water tank, an acid tank, an alkali tank, and a cleaning tank are arranged in sequence. Each tank has a sloping bottom and is equipped with a guide plate. The top of the tank is equipped with a cover plate, and the side of the cover plate has an exhaust port and an air duct connected to the acid mist treatment fan. An overflow port is provided at the upper part of one end of the box frame, and a discharge port is provided at the lower part of one end of the box frame.

[0008] The drying device includes a fan, a heating system, a drying tank, and a temperature control system. The drying tank is equipped with a high-temperature airflow channel to form a high-temperature convective airflow on the surface of the metallurgical sample strip to dry the plate. The top of the drying device has an open structure and is equipped with an air electric heating tube for heating. The air electric heating tube is installed in the air duct, and the heat is delivered by the fan to the blowing area of ​​the metallurgical sample strip.

[0009] The robotic arm is a monorail mobile robotic arm equipped with clamps. The clamps can transfer metallurgical samples to various pickling process stations, or directly transfer metallurgical samples to the metallurgical sample conveyor rollers. The robotic arm has a steel structure cantilever and a monorail. The steel structure cantilever is driven by a motor on the monorail. The moving wheels are guided by guide wheels and have track clamping wheels. The lifting is driven by a geared motor. The movement is controlled by a laser rangefinder and the lifting is controlled by an encoder. The metallurgical sample clamping action is driven by a cylinder. The cylinder is equipped with a limit sensor. The drag chain moves through the rack on the lifting beam, and cooperates with the tilting shaft and a pair of left and right claws.

[0010] The fluid system includes an automatic neutralization and discharge unit for waste liquid generated from pickling, an automatic liquid addition, replenishment, and dispensing unit for the working tank, an automatic discharge and flushing unit for waste liquid from the working tank, and a backwashing and crystallization treatment unit for the acid pipeline; the fluid is transported via pipeline.

[0011] The electrical control system includes an automatic pickling control unit, which is a 1200 series PLC. The PLC control logic has three control logics: jog, manual, and automatic. The PLC control program is compiled using TIA Portal V15.1 and communicates with each device through a PN network.

[0012] The automatic pickling line for metallurgical samples of this utility model can also be further realized by the following technical measures.

[0013] The aforementioned automatic pickling line for metallurgical samples uses polypropylene (PPH) as the material for all pickling devices, which has excellent chemical resistance, long service life, and high safety.

[0014] The aforementioned automatic pickling line for metallurgical samples also includes a high-speed airflow channel that utilizes the function of an air knife system to quickly dry large particles of liquid on the surface of the metallurgical sample strip.

[0015] The aforementioned automatic pickling line for metallurgical samples has the following dimensions for the entire pickling device: length ≥1800mm × width 870mm × depth 400mm.

[0016] The aforementioned automatic pickling line for metallurgical samples includes a heating system equipped with a ceramic heating element.

[0017] The aforementioned automatic pickling line for metallurgical samples is also equipped with a pneumatic valve station, which includes a silencer, a two-position five-way directional valve, a valve seat, a three-piece air source treatment unit, and a valve assembly.

[0018] The aforementioned automatic pickling line for metallurgical samples includes an automatic waste liquid neutralization and discharge unit comprising an acid-containing waste liquid tank, an acid-resistant agitator, a delivery pump, online monitoring instruments, automatic valves, an alkali storage tank, and control system hardware and software. The acid-containing wastewater generated during production is automatically or with a single click neutralized in the waste acid tank according to the output and time, achieving unmanned processing of the waste acid liquid automatic neutralization system.

[0019] After adopting the above technical solution, the automatic pickling line for metallurgical samples of this utility model has the following advantages:

[0020] 1. To realize the automatic pickling function of pickling samples after steel plate shearing, to meet the design requirements, and at the same time meet the production and process requirements for product quality;

[0021] 2. The production line uses a shearing machine to cut pickling samples according to a fixed length. The pickling line automatically takes the samples from the inspection table and follows the production process in sequence: cooling, pickling, alkali washing, rinsing, surface blowing and drying. Finally, the samples are placed on the discharge roller conveyor. The whole process is fully automated and unmanned. At the same time, it adopts new automatic acid mixing and automatic waste liquid neutralization and discharge technology, which saves energy and reduces emissions by 20%, reducing the impact on the surrounding environment.

[0022] 3. The equipment is compact, neat and beautiful, occupies a small area, and is modularly installed, making inspection and maintenance convenient. The process realizes unmanned intelligent manufacturing, which improves the environment. At the same time, the replenishment and discharge of special media are automatically completed, achieving energy saving and emission reduction. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the pickling device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the drying device according to an embodiment of the present invention;

[0025] Figure 3 This is an external view of the robotic arm according to an embodiment of the present utility model;

[0026] Figure 4 This is a plan view of the pickling line equipment according to an embodiment of the present utility model;

[0027] Figure 5 This is a flowchart of the pickling control system according to an embodiment of the present invention;

[0028] Figure 6 This is an external view of the pickling device according to an embodiment of the present invention;

[0029] Figure 7 for Figure 6 Side view;

[0030] Figure 8 This is a schematic diagram of the robotic arm configuration according to an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the robotic arm structure according to an embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the inner liner of the drying device according to an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the pneumatic valve platform according to an embodiment of the present utility model;

[0034] Figure 12 This is a schematic diagram of another pneumatic valve platform according to an embodiment of the present utility model;

[0035] Figure 13 This is a process flow diagram of an embodiment of the present utility model. Detailed Implementation

[0036] The present invention will be further described below with reference to the embodiments and accompanying drawings. Example

[0037] The automatic pickling line for metallurgical samples of this utility model includes a pickling device, a drying device, a robotic arm, a fluid system, and an electrical control system.

[0038] Please see now Figure 13 , Figure 13 This is a process flow diagram of an embodiment of the present invention. As shown in the figure, the robotic arm picks up the pickling sample and moves it to the pickling device. At this time, the pickling device is in the preparation station. The pickling sample is placed into the cooling, pickling, alkaline washing, and rinsing tanks respectively. After pickling is completed, the robotic arm places the sample into the drying device station. After drying, it is placed on the conveyor roller. The whole process is fully automated. Then, the sample is manually wiped, marked, and coated with anti-rust oil. Finally, the flipping mechanism places it on the sample storage rack.

[0039] Figure 1 This is a schematic diagram of the pickling device according to an embodiment of the present invention. Figure 4 This is a plan view of the pickling line equipment according to an embodiment of the present invention. Figure 5 This is a flowchart of the pickling control system according to an embodiment of the present invention. Figure 6 This is an external view of the pickling apparatus according to an embodiment of the present invention. Figure 7 for Figure 6The side view of the automatic pickling line for metallurgical samples of this utility model shows the pickling device. Each tank has a sloping bottom and is equipped with a guide plate. The top of the tank is covered with a cover plate, and the side of the cover plate has an exhaust port and an air duct connected to the acid mist treatment fan. All materials are PPH. The overall dimensions of the pickling device are approximately: length 1800mm × width 870mm × depth 400mm. The pickling device features small size and high space utilization, is suitable for complex environmental conditions, has a simple installation structure, and a rationally designed box structure that makes full use of space. All materials are selected from high-performance polypropylene (PPH), which has the strongest chemical resistance, long service life, and high safety.

[0040] Figure 2 This is a schematic diagram of the drying device according to an embodiment of the present invention. Figure 10 This is a schematic diagram of the inner chamber of the drying device according to an embodiment of the present invention. The drying device establishes a high-temperature airflow channel within the drying chamber by a high-temperature flowing airflow generated by a fan and a heating system, forming a high-temperature convective airflow on the surface of the strip to dry the sheet. Utilizing the function of the air knife system, large liquid particles on the surface of the strip are quickly dried by a high-speed airflow on top of the normal high-temperature airflow channel. The inner chamber of the drying device has a top-opening structure and uses an air-electric heating tube for heating. The air-electric heating tube is installed in the air duct, and the heat is delivered by the fan to the strip blowing area, and then returns to the fan, causing the hot air to circulate and heat repeatedly, recovering waste heat, and saving energy and reducing emissions.

[0041] Figure 3 This is an external view of the robotic arm according to an embodiment of the present invention. Figure 8 This is a diagram showing the configuration of the robotic arm according to an embodiment of the present invention. Figure 9 This is a schematic diagram of the robotic arm structure according to an embodiment of the present invention. The robotic arm is a single-rail mobile robotic arm with moving and lifting functions, used for gripping samples. The robotic arm uses a clamping method to transfer samples to various pickling process stations, or directly to the sample conveyor roller conveyor. It is a steel cantilever structure with a single track. Movement is driven by a geared motor, and the moving wheels are guided by guide wheels with track clamping wheels. Lifting is driven by a geared motor. Movement is controlled by a laser rangefinder, and lifting is controlled by an encoder. The metallurgical sample clamping action is driven by a cylinder 12, which is equipped with a limit sensor. The drag chain 15, through the rack 14 on the lifting beam 13, cooperates with the tilting shaft 11 and a pair of left and right claws 10 to move.

[0042] This utility model's automatic pickling line for metallurgical samples is equipped with a fluid system, including automatic neutralization and discharge of waste liquid generated during pickling, automatic liquid addition, replenishment, and preparation in the working tank, automatic discharge and flushing of waste liquid from the working tank, and backwashing and crystallization treatment of the acid pipeline. It changes the traditional preparation and transportation mode, adopts the latest pipe transportation connection technology, and separates acid and alkali preparation from the production and use area in the plant, making it safer and more reliable.

[0043] This utility model's automatic pickling line for metallurgical samples is equipped with a fluid system, including an electrical control system. The automatic pickling control uses a 1200 series PLC, and its control logic is divided into three types: jog, manual, and automatic. The PLC control program is written using TIA Portal V15.1, and communication between devices is achieved through a PN network.

[0044] Figure 11 This is a schematic diagram of the pneumatic valve platform according to an embodiment of the present invention. Figure 12 This is a schematic diagram of another pneumatic valve platform according to an embodiment of the present invention. The automatic pickling line for metallurgical samples of the present invention is equipped with a pneumatic valve platform, which consists of a silencer, a two-position five-way reversing valve (single electric control), a valve seat, a three-piece air source treatment unit, and pipe fittings.

[0045] This utility model discloses an automated pickling line for metallurgical samples, equipped with an automated wastewater neutralization and discharge system. The system comprises an acid-containing wastewater tank, an acid-resistant agitator, a delivery pump, online monitoring instruments, automatic valves, an alkali storage tank, and control system hardware and software. Acidic wastewater generated during production is automatically or via a single button, neutralized in the waste acid tank based on output and time constraints. The automated waste acid neutralization system achieves unmanned operation, ensuring safety, accuracy, and stability.

[0046] This utility model discloses an automatic pickling line for metallurgical samples, equipped with an electrical control system. After sample cutting, the sample is placed, and the entire production process is automatically controlled. The control of the entire system is divided into two parts: a robotic arm control system and a pickling control system. The main operation mode of the pickling line is controlled and operated by an HMI in the control room. In addition to the local control panel on the complete set of equipment, a local button control panel is set up on site.

[0047] The control system of this utility model for an automatic pickling line for metallurgical samples uses a Siemens pre-built PLC to control various process functions. The main configuration includes: Controller: 1 set, S7-1200 series; Remote operator stations: 2 sets, located next to the pickling tank and the robotic arm equipment; Engineer station: 1 set, located in the electrical room; Number of control panels: 2, the main PLC cabinet (robotic arm operator cabinet) and the remote I / O cabinet (pickling operator cabinet).

[0048] This utility model possesses substantial features and significant technological advancements. Its automatic pickling line for metallurgical samples, proven through practical field application, enables automatic pickling of steel plate samples after shearing, meeting design requirements and simultaneously satisfying production and process demands for product quality. The production process involves shearing pickling samples according to specified lengths using a shearing machine. The pickling line automatically retrieves samples from the inspection table and sequentially processes them through cooling, pickling, alkali washing, and rinsing, followed by surface blowing and drying. Finally, the samples are placed on the discharge roller conveyor. The entire process is fully automated and unmanned. Furthermore, it employs new automatic acid mixing and automatic waste liquid neutralization and discharge technologies, achieving 20% ​​energy savings and emission reductions, minimizing environmental impact. The equipment layout is compact, neat, and aesthetically pleasing, occupying a small area. Modular installation facilitates convenient maintenance and repair. The process achieves unmanned intelligent manufacturing, improving the environment. Simultaneously, automatic replenishment and discharge of special media contribute to energy savings and emission reductions.

[0049] The above embodiments are for illustrative purposes only and are not intended to limit the scope of this utility model. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of this utility model. Therefore, all equivalent technical solutions should also fall within the scope of this utility model and should be defined by the claims.

Claims

1. An automated pickling line for metallurgical samples, comprising a pickling device, a drying device, a robotic arm, a fluid system, and an electrical control system, characterized in that: The pickling device is a box frame (9), in which a cold water tank (5), an acid tank (6), an alkali tank (7), and a cleaning tank (8) are arranged in sequence. Each tank has a sloping bottom and is equipped with a guide plate. The top of the tank is equipped with a cover plate (4). The side of the cover plate has an exhaust port (1) and an air duct is provided, which is connected to the acid mist treatment fan. An overflow port (2) is provided at the upper part of one end of the box frame, and a discharge port (3) is provided at the lower part of one end of the box frame. The drying device includes a fan, a heating system, a drying tank, and a temperature control system. The drying tank is equipped with a high-temperature airflow channel to form a high-temperature convective airflow on the surface of the metallurgical sample strip to dry the plate. The top of the drying device has an open structure and is equipped with an air electric heating tube for heating. The air electric heating tube is installed in the air duct, and the heat is delivered by the fan to the blowing area of ​​the metallurgical sample strip. The robotic arm is a monorail mobile robotic arm equipped with a clamp. The clamp can transfer the metallurgical sample to each pickling process station, or directly transfer the metallurgical sample to the metallurgical sample conveyor roller. The robotic arm is equipped with a steel structure cantilever and a monorail. The steel structure cantilever is driven by a motor on the monorail. The moving wheels are guided by guide wheels and have track clamping wheels. The lifting is driven by a geared motor. The movement is controlled by a laser rangefinder. The lifting is controlled by an encoder. The metallurgical sample clamp is driven by a cylinder (12). The cylinder is equipped with a limit sensor. The drag chain (15) moves through the rack (14) on the lifting beam (13) and cooperates with the flipping shaft (11) and a pair of left and right claws (10) to operate. The fluid system includes an automatic neutralization and discharge unit for waste liquid generated from pickling, an automatic liquid addition, replenishment, and dispensing unit for the working tank, an automatic discharge and flushing unit for waste liquid from the working tank, and a backwashing and crystallization treatment unit for the acid pipeline; the fluid is transported via pipeline. The electrical control system includes an automatic pickling control unit, which is a 1200 series PLC. The PLC control logic has three control logics: jog, manual, and automatic. The PLC control program is compiled using TIA Portal V15.1 and communicates with each device through a PN network.

2. The automatic pickling line for metallurgical samples as described in claim 1, characterized in that, All materials used in the pickling apparatus are polypropylene (PPH).

3. The automatic pickling line for metallurgical samples as described in claim 1, characterized in that, The high-temperature airflow channel is also equipped with a high-speed airflow that utilizes the function of the air knife system, which can quickly dry large particles of liquid on the surface of the metallurgical sample strip.

4. The automatic pickling line for metallurgical samples as described in claim 1, characterized in that, The overall dimensions of the pickling apparatus are: length ≥1800mm × width 870mm × depth 400mm.

5. The automatic pickling line for metallurgical samples as described in claim 1, characterized in that, The heating system is equipped with a ceramic heating element.

6. The automatic pickling line for metallurgical samples as described in claim 1, characterized in that, It is also equipped with a pneumatic valve station, which includes a silencer, a two-position five-way directional valve, a valve seat, an air source treatment unit, and a valve assembly.

7. The automatic pickling line for metallurgical samples as described in claim 1, characterized in that, The automatic waste liquid neutralization and discharge unit includes an acidic waste liquid tank, an acid-resistant stirrer, a delivery pump, online monitoring instruments, automatic valves, an alkali storage tank, and control system hardware and software. The acidic wastewater generated during production is automatically or with one click neutralized in the waste acid tank according to the output and time. The automatic waste acid neutralization system achieves unmanned processing.

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