A steel coil surface lubricating liquid spraying device

Abstract

The utility model discloses a kind of steel coil surface lubricating liquid spraying devices, relate to iron and steel industry, to solve the problem of extrusion injury, surface scratch when steel coil bundling. Device includes ground rail, moving trolley, three-dimensional spraying system, liquid supply system, purging system and PLC controller;Moving trolley slides along ground rail, three-dimensional spraying system contains center spraying pipe (with inner ring double-flow nozzle) and outer spraying pipe (with outer ring double-flow nozzle), respectively on the inner and outer surface of steel coil spraying;Liquid supply system supplies liquid by double mixed liquid tank alternately, purging system removes pipeline residue;PLC controller links each component to realize automation, uniform spraying.The utility model can reduce steel coil bundling defect, while having the advantages of high efficiency, stability, environmental protection etc..

Description

Technical Field

[0001] This utility model relates to the steel industry, specifically to a lubricant spraying device for steel coil surfaces. Background Technology

[0002] After the wire is rolled into coils, it needs to be bundled before being delivered to the user. During the bundling process, the coils will be subjected to pressure, resulting in defects such as squeezing marks and surface scratches. These surface defects will affect the user's use. Utility Model Content

[0003] To reduce surface defects during bundling, this invention provides a steel coil surface lubricant spraying device, which can spray a special lubricant onto the coil surface before bundling, thereby reducing surface defects caused by bundling. The specific solution is as follows:

[0004] A lubricant spraying device for steel coil surfaces, the device being used to spray a mist of lubricant onto the inner and outer surfaces of a suspended steel coil, the device comprising:

[0005] Ground tracks, located on the ground;

[0006] A mobile trolley is slidably mounted on a ground rail. The mobile trolley includes a chassis and a horizontal cylindrical shell. The bottom of the chassis is equipped with wheels and a drive device for driving the wheels to rotate. The horizontal cylindrical shell is mounted on the chassis. The horizontal cylindrical shell has openings at both ends in the sliding direction of the mobile trolley. The bottom of the horizontal cylindrical shell is connected to the wheels, and the wheels are connected to the drive device.

[0007] The three-dimensional spray system is fixedly installed on the mobile trolley and moves synchronously with the mobile trolley. The three-dimensional spray system includes a central spray pipe axially arranged inside a horizontal cylindrical shell and an outer spray pipe circumferentially arranged on the inner wall of the horizontal cylindrical shell. The central spray pipe is equipped with multiple inner ring dual-flow nozzles, and the outer spray pipe is equipped with multiple outer ring dual-flow nozzles.

[0008] The liquid supply system, connected to the three-dimensional spray system, is used to supply lubricating fluid. The liquid supply system includes a mains water pipe, a lubricating fluid storage tank, a mixing tank, and a liquid discharge pump. The mixing tank has two inlet ends that are connected to the mains water pipe and the lubricating fluid storage tank respectively. The mixing tank has one outlet end that is connected to the liquid discharge pump. The liquid discharge pump is connected to the central spray pipe and the outer spray pipe through the liquid discharge pipe.

[0009] The purging system, connected to the three-dimensional spray system, is used to remove residual lubricating oil in the three-dimensional spray system. The purging system includes a compressed air tank, a purging pipeline, and a shut-off valve. The compressed air tank is connected to the central spray pipe and the outer spray pipe through the purging pipeline, and a shut-off valve is installed on the purging pipeline.

[0010] The PLC controller is connected to the drive unit, liquid supply system, and purging system.

[0011] Furthermore, the liquid supply system includes two mixing tanks connected in parallel. Each mixing tank has two inlet ends that are respectively connected to the municipal water pipe and the lubricating liquid storage tank, and the outlet ends of both mixing tanks are connected to the liquid discharge pump.

[0012] Electromagnetic flow meters are installed at both inlet and outlet ends of the two mixing tanks.

[0013] Furthermore, the two inlet and outlet ends of the mixing tank, as well as the purging pipeline, are equipped with parallel manual ball valves and solenoid valves, and the solenoid valves are connected to the PLC controller.

[0014] Furthermore, both the lubricant storage tank and the mixing tank are equipped with level gauges, which are connected to the PLC controller.

[0015] Furthermore, filters are installed at both the inlet end connecting the mixing tank and the lubricating fluid storage tank, and at the outlet end connected to the outlet pump.

[0016] Furthermore, the mixing tank is equipped with a stirring device, which is connected to the PLC controller;

[0017] The stirring device is equipped with a stirring motor, a stirring shaft and blades. The stirring motor is installed on the top of the mixing tank, the stirring shaft is located inside the mixing tank, the top of the stirring shaft passes through the mixing tank and is connected to the output shaft of the stirring motor, and the bottom of the stirring shaft is connected to blades.

[0018] Furthermore, a waste liquid collection tank is installed on the ground at the end of the ground rail closest to the suspended steel coil.

[0019] The bottom of the horizontal cylindrical shell is equipped with a waste liquid outlet, through which the droplets of the three-dimensional spray system flow into the waste liquid collection tank for collection.

[0020] The steel coil surface lubricant spraying device provided by this utility model achieves uniform lubrication of the inner and outer surfaces of the steel coil, reduces bundling defects, and also features automation, stability, and environmental friendliness, specifically reflected in the following aspects:

[0021] 1. Comprehensive and uniform coating coverage: The three-dimensional spraying system includes a central spray pipe and an outer spray pipe, corresponding to the inner and outer surfaces of the steel coil respectively. Combined with multiple sets of dual-flow nozzles, it provides simultaneous spraying without any blind spots. The moving trolley travels along a track, and the PLC controller regulates the travel speed and spraying sequence to ensure overall coating uniformity.

[0022] 2. High degree of automation and high efficiency: The PLC controller links the drive unit, liquid supply system, and purging system to achieve unmanned automatic movement, liquid preparation, spraying, and purging throughout the entire process. Different operating parameters are preset, supporting continuous operation. Two parallel mixing tanks can work alternately without requiring downtime for liquid preparation or cleaning.

[0023] 3. Stable and reliable operation, convenient maintenance: Equipped with a filter to intercept impurities, and a purging system to remove pipeline residues, preventing nozzle blockage and extending equipment lifespan. Real-time monitoring by a level gauge and electromagnetic flow meter, with automatic low-level alarms, and dynamic adjustment of mixing ratio and flow rate ensures stable lubricant concentration and atomization. The parallel design of manual ball valves and on / off solenoid valves allows for both automatic control and manual maintenance; the filter is removable for easy maintenance.

[0024] 4. Environmentally friendly and energy-saving with high resource utilization: Equipped with waste liquid collection tanks and collection pools, excess droplets from the spraying process are recovered and can be recycled for liquid preparation after treatment, reducing waste and environmental pollution. The pump speed and spray parameters can be adjusted as needed to avoid excessive use of lubricant and reduce consumable costs. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a lubricant spraying device for steel coil surfaces according to the present invention;

[0027] Figure 2 This is the main view of the moving vehicle;

[0028] Figure 3 This is a side view of the moving vehicle.

[0029] Explanation of reference numerals in the attached figures:

[0030] Suspension steel coil 01, ground rail 1, waste liquid collection tank 11

[0031] Mobile trolley 2, chassis 21, horizontal cylindrical outer shell 22, waste liquid discharge port 23, drive unit 24, wheels 25.

[0032] The three-dimensional spray system 3 consists of a central spray pipe 31, an outer spray pipe 32, an inner ring dual-flow nozzle 33, and an outer ring dual-flow nozzle 34.

[0033] Liquid supply system 4, municipal water pipe 41, lubricating fluid storage tank 42, mixing tank 43, liquid outlet pump 44, stirring device 45, stirring motor 451, stirring shaft 452, blades 453, liquid outlet pipe 46, filter 47.

[0034] Purging system 5, compressed air storage tank 51, purging pipeline 52, shut-off valve 53. Detailed Implementation

[0035] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0036] To fully understand this utility model, detailed steps and structures will be presented in the following description to illustrate the technical solution of this utility model. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0037] Reference Figure 1-3 As shown, this utility model provides a steel coil surface lubricant spraying device, which is used to spray atomized lubricant onto the inner and outer surfaces of a suspended steel coil 01. The steel coil surface lubricant spraying device includes a ground rail 1, a moving trolley 2, a three-dimensional spraying system 3, a liquid supply system 4, a purging system 5, and a PLC controller.

[0038] Ground track 1 is located on the ground.

[0039] The mobile trolley 2 is slidably mounted on the ground rail 1. The mobile trolley 2 includes a chassis 21 and a horizontal cylindrical shell 22. The bottom of the chassis 21 is provided with a traveling wheel 25 and a drive device 24 for driving the traveling wheel 25 to rotate. The horizontal cylindrical shell 22 is mounted on the chassis 21. The horizontal cylindrical shell 22 has openings at both ends in the sliding direction of the mobile trolley. The bottom of the horizontal cylindrical shell 22 is connected to the traveling wheel 25, and the traveling wheel 25 is connected to the drive device 24.

[0040] The three-dimensional spray system 3 is fixedly installed on the mobile trolley 2 and moves synchronously with the mobile trolley 2. The three-dimensional spray system 3 includes a central spray pipe 31 axially arranged inside the horizontal cylindrical shell 22 and an outer spray pipe 32 arranged around the inner wall of the horizontal cylindrical shell 22. The central spray pipe 31 is provided with multiple inner ring dual-flow nozzles 33, and the outer spray pipe 32 is provided with multiple outer ring dual-flow nozzles 34.

[0041] The liquid supply system 4 is connected to the three-dimensional spray system 3 to provide lubricant. The liquid supply system 4 includes a mains water pipe 41, a lubricant storage tank 42, a mixing tank 43, and a liquid discharge pump 44. The mixing tank 43 has two inlet ends that are connected to the mains water pipe 41 and the lubricant storage tank 42 respectively. The mixing tank 43 has one outlet end that is connected to the liquid discharge pump 44. The liquid discharge pump 44 is connected to the central spray pipe 31 and the outer spray pipe 32 through the liquid discharge pipe 46.

[0042] The purging system 5 is connected to the three-dimensional spray system 3 and is used to remove residual lubricating oil in the three-dimensional spray system 3. The purging system 5 includes a compressed air storage tank 51, a purging pipeline 52 and a shut-off valve 53. The compressed air storage tank 51 is connected to the central spray pipe 31 and the outer spray pipe 32 through the purging pipeline 52. The shut-off valve 53 is provided on the purging pipeline 52.

[0043] The PLC controller is connected to the drive unit 24, the liquid supply system 4, and the purging system 5. The PLC controller has a preset operating program that controls the mobile trolley 2 to automatically move along the ground rail 1 to below the steel coil 01. It then activates the liquid supply system 4, which mixes the lubricant in the mixing tank 43 and delivers it via the outlet pump 44 to the central spray pipe 31 and the outer spray pipe 32. The lubricant is then sprayed evenly onto the inner and outer surfaces of the suspended steel coil 01 simultaneously through the inner and outer dual-flow nozzles 33 and 34. The PLC controller adjusts the mobile trolley 2's speed and spray sequence according to a preset trajectory to ensure full coverage. During spraying, the PLC controller monitors the liquid pressure and flow rate in real time and dynamically adjusts the speed of the outlet pump 44 to maintain stable atomization. When the mobile trolley 2 reaches the end of the steel coil 01, it automatically decelerates, extending the spray time to enhance edge coverage. After spraying, the system automatically records the operating parameters and uploads them to the management platform for easy traceability and analysis. The entire system achieves unmanned operation, significantly improving lubrication uniformity and production efficiency.

[0044] After shutdown and maintenance, the liquid supply system 4 is shut off, the purging system 5 is triggered to open the shut-off valve 53, and compressed air is used to remove residual lubricant from the three-dimensional spray system 3 through the purging pipeline 52 to prevent blockage.

[0045] In an optional embodiment, the liquid supply system 4 includes two parallel mixing tanks 43. Each mixing tank 43 has two inlet ends connected to a municipal water pipe 41 and a lubricant storage tank 42, respectively, and the outlet ends of both mixing tanks 43 are connected to a liquid discharge pump 44. Electromagnetic flow meters are installed at both inlet and outlet ends of the two mixing tanks 43. The electromagnetic flow meters monitor the inlet and outlet volumes of the mixing tanks 43 in real time. The PLC controller automatically adjusts the supply ratio of the municipal water pipe 41 and the lubricant storage tank 42 according to a preset ratio to ensure a stable lubricant concentration. When one mixing tank 43 is working, the other mixing tank 43 can be cleaned or kept on standby, improving continuous operation capability. Simultaneously, the PLC controller dynamically adjusts the flow rate of the liquid discharge pump 44 according to the travel speed of the mobile trolley 2 to ensure uniform spray coverage of the target area.

[0046] In an optional embodiment, the mixing tank 43 is equipped with parallel manual ball valves and solenoid valves at both inlet and outlet ends and the purge pipeline 52, with the solenoid valves connected to the PLC controller.

[0047] In an optional embodiment, both the lubricant storage tank 42 and the mixing tank 43 are equipped with level gauges, which are connected to a PLC controller to monitor the changes in the levels of the lubricant and the mixture in real time. When the level is lower than a set threshold, the PLC controller automatically triggers an alarm to ensure stable liquid supply. Simultaneously, the PLC controller coordinates the operation of the dispensing pump 44 and the drive unit 24 with the production rhythm to achieve precise mixing and on-demand spraying. Spraying parameters for different operating conditions are preset via the PLC controller.

[0048] In an optional embodiment, the feed end of the mixing tank 43 connected to the lubricating fluid storage tank 42 and the discharge end connected to the discharge pump 44 are both equipped with filters 47 to effectively intercept impurities, prevent nozzle blockage, and ensure smooth lubricating fluid delivery. The filters 47 are detachable, which facilitates regular cleaning or replacement and ensures long-term stable operation of the system.

[0049] In an optional embodiment, each mixing tank 43 is equipped with a stirring device 45, which is connected to a PLC controller. The stirring device 45 includes a stirring motor 451, a stirring shaft 452, and blades 453. The stirring motor 451 is mounted on top of the mixing tank 43, and the stirring shaft 452 is located inside the mixing tank 43. The top end of the stirring shaft 452 passes through the mixing tank 43 and is connected to the output shaft of the stirring motor 451. The bottom end of the stirring shaft 452 is connected to the blades 453. The stirring device 45 starts at a preset frequency under the command of the PLC controller to ensure that the lubricating fluid and water are fully and evenly mixed, avoiding sedimentation or stratification. The blades 453 adopt a spiral structure design to improve mixing efficiency and keep the concentration of the mixture consistent. Combined with real-time feedback data from the electromagnetic flowmeter, the PLC controller dynamically adjusts the stirring time and the start and stop of the outlet pump 44 to achieve closed-loop control and ensure stable and reliable spray quality.

[0050] In an optional embodiment, a waste liquid collection tank 11 is provided on the ground near the end of the ground rail 1 closest to the suspended steel coil; a waste liquid outlet 23 is provided at the bottom of the horizontal cylindrical shell 22, and the droplets of the three-dimensional spray system 3 flow through the waste liquid outlet 23 into the waste liquid collection tank 11 for collection, facilitating centralized treatment or recycling; the collection tank is equipped with a filter screen and a sedimentation zone to effectively separate solid impurities and oil-water mixtures in the waste liquid, reducing environmental pollution. The outlet of the collection tank is connected to a recovery pump, and the treated liquid can be recycled for the preparation of mixed solutions, realizing resource reuse.

[0051] It should be noted that the timing and interlocking logic of the PLC controller controlling the actions of each actuator are conventional techniques used by those skilled in the art, and their processes and principles will not be elaborated here.

[0052] The preferred embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above. Devices and structures not described in detail herein should be understood as being implemented in a conventional manner within the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of this utility model using the disclosed methods and techniques, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the technical solution of this utility model. This does not affect the essential content of this utility model. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the content of the technical solution of this utility model, still fall within the protection scope of the technical solution of this utility model.

Claims

1. A steel coil surface lubricant spraying device, wherein the steel coil surface lubricant spraying device is used to spray a mist of lubricant onto the inner and outer surfaces of a suspended steel coil, characterized in that, The steel coil surface lubricant spraying device includes: Ground tracks, located on the ground; A mobile trolley is slidably mounted on a ground rail. The mobile trolley includes a chassis and a horizontal cylindrical shell. The bottom of the chassis is equipped with wheels and a drive device for driving the wheels to rotate. The horizontal cylindrical shell is mounted on the chassis. The horizontal cylindrical shell has openings at both ends in the sliding direction of the mobile trolley. The bottom of the horizontal cylindrical shell is connected to the wheels, and the wheels are connected to the drive device. The three-dimensional spray system is fixedly installed on the mobile trolley and moves synchronously with the mobile trolley. The three-dimensional spray system includes a central spray pipe axially arranged inside a horizontal cylindrical shell and an outer spray pipe circumferentially arranged on the inner wall of the horizontal cylindrical shell. The central spray pipe is equipped with multiple inner ring dual-flow nozzles, and the outer spray pipe is equipped with multiple outer ring dual-flow nozzles. The liquid supply system, connected to the three-dimensional spray system, is used to supply lubricating fluid. The liquid supply system includes a mains water pipe, a lubricating fluid storage tank, a mixing tank, and a liquid discharge pump. The mixing tank has two inlet ends that are connected to the mains water pipe and the lubricating fluid storage tank respectively. The mixing tank has one outlet end that is connected to the liquid discharge pump. The liquid discharge pump is connected to the central spray pipe and the outer spray pipe through the liquid discharge pipe. The purging system, connected to the three-dimensional spray system, is used to remove residual lubricating oil in the three-dimensional spray system. The purging system includes a compressed air tank, a purging pipeline, and a shut-off valve. The compressed air tank is connected to the central spray pipe and the outer spray pipe through the purging pipeline, and a shut-off valve is installed on the purging pipeline. The PLC controller is connected to the drive unit, liquid supply system, and purging system.

2. The lubricant spraying device for steel coil surface as described in claim 1, characterized in that, The liquid supply system includes two mixing tanks connected in parallel. Each mixing tank has two inlet ends that are respectively connected to the municipal water pipe and the lubricating fluid storage tank, and the outlet ends of both mixing tanks are connected to the liquid discharge pump. Electromagnetic flow meters are installed at both inlet and outlet ends of the two mixing tanks.

3. A lubricant spraying device for steel coil surface as described in claim 1 or 2, characterized in that, The mixing tank is equipped with parallel manual ball valves and solenoid valves at both inlet and outlet ends, as well as on the purging pipeline. The solenoid valves are connected to the PLC controller.

4. A lubricant spraying device for steel coil surface as described in claim 1 or 2, characterized in that, Both the lubricant storage tank and the mixing tank are equipped with level gauges, which are connected to the PLC controller.

5. A lubricant spraying device for steel coil surface as described in claim 1 or 2, characterized in that, The inlet end connecting the mixing tank and the lubricating fluid storage tank, as well as the outlet end connected to the outlet pump, are both equipped with filters.

6. The steel coil surface lubricant spraying device as described in claim 2, characterized in that, The mixing tank is equipped with a stirring device, which is connected to a PLC controller; The stirring device is equipped with a stirring motor, a stirring shaft and blades. The stirring motor is installed on the top of the mixing tank, the stirring shaft is located inside the mixing tank, the top of the stirring shaft passes through the mixing tank and is connected to the output shaft of the stirring motor, and the bottom of the stirring shaft is connected to blades.

7. The steel coil surface lubricant spraying device as described in claim 1, characterized in that, A waste liquid collection tank is installed on the ground at the end of the ground rail near the suspended steel coil. The bottom of the horizontal cylindrical shell is equipped with a waste liquid outlet, through which the droplets of the three-dimensional spray system flow into the waste liquid collection tank for collection.

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