Slab lower surface descaling inspection device

Abstract

The utility model relates to a plate blank lower surface descaling inspection device which comprises an inspection roller way, and a plurality of roller shafts are arranged on the inspection roller way to convey a plate blank. The camera is mounted below the inspection roller way, and the camera is used for observing the descaling state of the lower surface of the plate blank; and the display screen is in signal connection with the camera. The method comprises the following steps: loading a plate blank subjected to primary descaling into an inspection device, and setting the number of times that the plate blank passes through the inspection device; and then the descaling condition of the lower surface of the slab is monitored in a video manner through a camera arranged below the inspection device, so that the descaling condition of the lower surface of the slab can be quickly observed, and the influence of potential defects on a subsequent steel rolling process is avoided.

Description

Technical Field

[0001] The utility model relates to the field of steel plate descaling inspection devices, in particular to a slab bottom surface descaling inspection device. Background Art

[0002] During the heating process of the heating furnace, the slab is oxidized to form a layer of iron oxide. After leaving the furnace, the slab needs to be descaled by a high-pressure water system to remove the iron oxide before normal rolling. Under normal circumstances, the high-temperature slab will be bright orange-red after descaling. The descaling effect of the slab can be checked visually. However, the lower surface of the slab cannot be directly seen, and the descaling effect of the lower surface can only be inferred from the descaling of the upper surface, the operation of the header, and the nozzle.

[0003] Currently, there is no effective device or method that can quickly observe the descaling of the lower surface of the slab. Once the lower surface is not cleanly descaled and rolling continues, surface defects such as iron oxide intrusion will appear on the steel plate, and the working rolls of the rolling mill may be scratched, which will affect the subsequent rolling of the steel plate and cause damage to the lower surface of the steel plate. In the subsequent process, it can only be checked by the surface inspection instrument located after the hot straightening machine, or the steel plate can be turned over for inspection after cooling on the cooling bed. At this time, adverse consequences have already occurred, and even batches of defective plates have appeared, and the problem cannot be detected at the first time when the defect is formed. Utility Model Content

[0004] The utility model aims to provide a device for inspecting the descaling of the lower surface of a slab, which solves the problem in the prior art that the descaling of the lower surface of the slab cannot be observed in real time, and realizes the effect of quickly observing the descaling of the lower surface of the slab after the high-pressure water descaling process.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a slab lower surface descaling inspection device, comprising an inspection roller, on which a plurality of rollers are arranged to convey the slab;

[0007] A camera, the camera is installed below the inspection roller, and the camera is used to observe the descaling state of the lower surface of the slab;

[0008] A display screen is connected to the camera signal.

[0009] Furthermore, there is a certain distance between two adjacent rollers to form an observation window on the lower surface of the slab.

[0010] Furthermore, a metal detector is installed on the side of the inspection roller, and the metal detector is used to detect the position of the slab.

[0011] Furthermore, a slag flushing groove is provided below the inspection roller, and the camera is arranged in the slag flushing groove to increase the observation distance between the camera and the slab.

[0012] Furthermore, a slide rail is arranged on the side wall of the slag flushing ditch, a slider is arranged on the slide rail, one end of the slider is connected to a pull rope, and the other end of the slider is connected to the camera, and the slider is adjusted to rise and fall on the slide rail by pulling the pull rope, thereby adjusting the upper and lower heights of the camera.

[0013] Furthermore, a bracket is provided between the slider and the camera, and the camera is fixedly mounted on the bracket.

[0014] Furthermore, a wind knife is provided on the left side of the camera, and the wind knife is used to protect the camera.

[0015] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0016] The utility model discloses a device for inspecting the descaling of the lower surface of a slab. A camera is arranged below a roller conveying the slab. The descaling condition of the lower surface of the slab is monitored in real time through a display screen video, thereby solving the problem in the prior art that the descaling of the lower surface of the slab cannot be observed immediately. The subsequent steel rolling defects caused by poor descaling effect are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the device distribution before the slab reaches the hot metal detection area provided in the utility model;

[0019] Figure 2 It is a schematic diagram of the position of the slab provided in the utility model when passing through the camera;

[0020] Figure 3 A diagram of a test device for a slab provided in the utility model when the slab passes through a detection area;

[0021] Figure 4 This is a schematic diagram of the camera mounting bracket provided in the utility model;

[0022] The reference numerals are described as follows:

[0023] 1. Inspection roller; 101, roller; 2, slab; 3, camera; 4, display screen; 5, metal detector; 6, slag flushing ditch; 601, slide rail; 602, slider; 7, bracket; 8, air knife; 9, high-pressure water descaling device. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 The utility model provides a slab lower surface descaling inspection device, which is arranged on the downstream process production line of the high-pressure water descaling device 9, and the production line is provided with an inspection roller 1 for receiving the slab 2 after initial descaling, and a metal detector 5 is arranged on the side of the inspection roller 1 for monitoring the real-time position of the slab 2. The metal detector 5 is not limited to being set up with only one, and the operator can set up multiple metal detectors 5 according to actual needs. In this embodiment, the metal detector used is a thermal metal detection device, which uses infrared rays or thermistors to detect the heat of the slab 2, and the real-time position of the slab 2 can be determined by the received thermal signal.

[0026] In addition, the metal detector is installed about 5 to 10 meters behind the high-pressure water descaling device 9 in order to avoid the area of ​​large amount of water vapor formed after the descaling water hits the surface of the slab 2 to prevent the water vapor from affecting the sensitivity of the metal detector.

[0027] During the actual inspection, when the slab 2 reaches the front end of the metal detector 5, the metal detector 5 detects the head of the slab 2, and the roller 101 stops rotating. At this time, the slab 2 is synchronously paused, and the staff confirms whether the slab 2 can enter the inspection process. If it is confirmed to enter the inspection process, the staff starts the operation, and the slab 2 moves slowly along the rolling direction; when the tail of the slab 2 passes the metal detector 5, the slab 2 immediately moves in the opposite direction of the rolling direction, and when the head of the slab 2 passes the metal detector 5 again, the slab 2 has completed a video inspection.

[0028] See also Figure 2 The inspection roller 1 is provided with a plurality of roller shafts 101 , and a certain distance is provided between two adjacent roller shafts 101 , so as to provide sufficient observation space for the camera 3 arranged under the inspection roller 1 .

[0029] See also Figure 3A slag flushing groove 6 is dug under the inspection roller 1 in the utility model, and the depth of the slag flushing groove 6 can be arranged according to the actual inspection needs. The camera 3 is arranged in the groove body of the slag flushing groove 6, which is conducive to the camera 3 to form a full viewing angle relative to the lower surface of the slab 2, so that the lower surface of the slab 2 can be fully observed. At the same time, the camera 3 adopts a high-definition low-latency series, which can realize real-time transmission of images, provide clearer images on the basis of reducing delays, and improve the accuracy of judging the descaling effect of the lower surface of the slab 2. The camera 3 is signal-connected to a display screen 4 arranged near the inspection roller 1, and is used to display the real-time video captured by the camera 3.

[0030] For how to set the camera 3 in the slag flushing ditch 6, refer to Figure 4 In this embodiment, a slide rail 601 is arranged on the side wall of the slag flushing ditch 6. The slide rail 601 goes deep into the slag flushing ditch 6. The length of the slide rail is kept above 3 meters, and there is a certain distance relative to the bottom of the slag flushing ditch 6. A slider 602 is slidably sleeved on the slide rail 601. One end of the slider 602 is connected to a pull rope (not shown in the figure), and the other end of the slider 602 is connected to a bracket 7, and the camera 3 is fixedly installed on the bracket 7. The slider 602 is pulled up and down on the slide rail 601 by the pull rope, and then the upper and lower heights of the camera 3 are adjusted, so that the camera 3 can be pulled out of the slag flushing ditch 6 for inspection and maintenance, thereby extending the service life of the camera 3, and the shooting angle of the camera 3 can also be adjusted. In addition, the operator can also increase the number of tracks of the slide rail 601 according to actual needs to stably support the bracket 7.

[0031] The slag flushing groove 6 also contains slag flushing water, which is used to receive water and iron oxide sheets falling from the slab 2 into the slag flushing groove 6 to prevent water or iron oxide sheets from falling onto the lens of the camera 3 and affecting monitoring; at the same time, the upper surface of the water is lower than the bottom of the slide rail 601 to prevent the water from submerging the camera 3.

[0032] In addition, a wind knife 8 is also provided on the left side of the camera 3. This is because the camera 3 is operated under poor working conditions for a long time and is affected by the working environment of heat radiation, severe water vapor, and severe iron oxide dust for a long time. Therefore, a wind knife 8 is provided in this embodiment, which can effectively prevent the water vapor formed by the oxidized iron sheet or the cooling water on the inspection roller 1 from falling onto the lens of the camera 3 and affecting the shooting effect.

[0033] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A slab bottom surface descaling inspection device, characterized in that: include: An inspection roller conveyor (1), wherein a plurality of roller shafts (101) are arranged on the inspection roller conveyor (1) for conveying the slab (2); A camera (3), the camera (3) being installed below the inspection roller (1), the camera (3) being used to observe the descaling state of the lower surface of the slab (2); A display screen (4), wherein the display screen (4) and the camera (3) are signal-connected.

2. A slab bottom surface descaling inspection device according to claim 1, characterized in that: There is a certain distance between two adjacent roller shafts (101) to form an observation window on the lower surface of the slab (2).

3. A slab bottom surface descaling inspection device according to claim 1, characterized in that: A metal detector (5) is installed on the side of the inspection roller (1), and the metal detector (5) is used to detect the position of the slab (2).

4. A slab bottom surface descaling inspection device according to claim 1, characterized in that: A slag flushing groove (6) is provided below the inspection roller conveyor (1), and the camera (3) is arranged in the slag flushing groove (6) to increase the observation distance between the camera (3) and the slab (2).

5. A slab bottom surface descaling inspection device according to claim 4, characterized in that: The side wall of the slag flushing groove (6) is provided with a slide rail (601), and a slider (602) is provided on the slide rail (601). One end of the slider (602) is connected to a pull rope, and the other end of the slider (602) is connected to the camera (3). By pulling the pull rope, the slider (602) is adjusted to rise and fall on the slide rail (601), thereby adjusting the upper and lower heights of the camera (3).

6. A slab bottom surface descaling inspection device according to claim 5, characterized in that: A bracket (7) is provided between the slider (602) and the camera (3), and the camera (3) is fixedly mounted on the bracket (7).

7. The slab bottom surface descaling inspection device according to claim 1, characterized in that: A wind knife (8) is provided on the left side of the camera (3), and the wind knife (8) is used to protect the camera (3).

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