Polishing scrap collecting device and pickling and rolling line

Abstract

The utility model discloses a grinding scrap collecting device and an acid rolling line, and the grinding scrap collecting device comprises a frame provided with a through space for strip steel to pass through; the slag receiving tank is located on one side of the strip steel, and the bottom of the slag receiving tank is rotationally connected to the frame through a rotating shaft so as to be switched between a collecting position and a waiting position; the slag receiving groove comprises a groove body and a protective lip, the protective lip comprises a first lip piece and a second lip piece which are connected to the same groove wall of the groove body, the lower ends of the first lip piece and the second lip piece are connected to the inner wall and the outer wall of the groove body respectively, and the upper ends of the first lip piece and the second lip piece incline towards the strip steel. The first lip piece and the second lip piece are respectively provided with an attaching surface attached to the surface of strip steel, and the attaching surface of the first lip piece is higher than the attaching surface of the second lip piece; wherein under the condition that the slag receiving groove is located at the collecting position, the binding face of the first lip piece and the binding face of the second lip piece are both attached to the strip steel, so that chippings fall into the slag receiving groove; and when the slag receiving groove is located at the waiting position, a gap is formed between the slag receiving groove and the strip steel.

Description

Technical Field

[0001] This application belongs to the field of pickling technology, specifically relating to a grinding debris collection device and a pickling line. Background Technology

[0002] Pickling and rolling lines have extremely high product quality requirements. Surface inspection of the strip steel is frequently required in the pickling section's quality control room. If defects are found, they need to be ground to prevent quality issues such as strip breakage and dents during subsequent cold rolling. To facilitate surface inspection, the strip steel runs vertically in the inspection and grinding section, but horizontally in the subsequent cold rolling section. Therefore, a guide roller needs to be installed between the grinding and cold rolling sections to change the strip steel's vertical movement to horizontal. The debris generated after grinding the strip steel in the grinding section moves downwards and falls onto the guide roller. Since the guide roller is a rubber roller, the debris on the guide roller adheres to the rubber roller after being squeezed by the strip steel, causing secondary damage to the strip steel.

[0003] In related technologies, a sealing plate is installed above the steering roller. However, the sealing plate has holes for the strip steel to pass through, but there are gaps in the hole walls between the strip steel and the sealing plate. Debris caused by grinding can still fall onto the steering roller through the gaps. Summary of the Invention

[0004] To address the technical problem of grinding debris falling onto the guide rollers and affecting the quality of strip steel, this application provides a grinding debris collection device and a pickling line.

[0005] In a first aspect of this application, a grinding debris collection device is provided for collecting debris generated during the grinding of a vertically arranged strip of steel. The collection device includes:

[0006] The frame has a through space for the strip steel to pass through;

[0007] A slag receiving trough is located on one side of the strip steel, and its bottom is rotatably connected to the frame via a pivot to switch between a collection position and a waiting position. The slag receiving trough includes a trough body and a protective lip. The protective lip includes a first lip and a second lip, both connected to the same wall of the trough body. The lower ends of the first lip and the second lip are respectively connected to the inner wall and the outer wall of the trough body. The upper ends of the first lip and the second lip are both inclined towards the strip steel and are both provided with a contact surface for contacting the surface of the strip steel. The contact surface of the first lip is higher than the contact surface of the second lip.

[0008] When the slag receiving trough is located in the collection position, the contact surfaces of the first lip and the second lip are both in contact with the strip steel so that the debris falls into the slag receiving trough; when the slag receiving trough is located in the waiting position, there is a gap between the slag receiving trough and the strip steel.

[0009] In some embodiments, the protective lip further includes a connecting piece, to which both the first lip piece and the second lip piece are connected, and the first lip piece, the second lip piece, and the connecting piece together form a connecting groove into which the wall of the slag receiving groove extends.

[0010] In some embodiments, the first lip is 8-15 mm higher than the second lip; the size of the protective lip is larger than the size of the strip along the width direction of the strip.

[0011] In some embodiments, there is a gap between the first lip and the second lip.

[0012] In some embodiments, the groove includes a first groove plate, a second groove plate, a third groove plate, a fourth groove plate, and a bottom plate. The first groove plate and the third groove plate are disposed opposite to each other, and the second groove plate and the fourth groove plate are disposed opposite to each other. The second groove plate is connected to the first groove plate and the third groove plate, and the fourth groove plate is connected to the first groove plate and the third groove plate. The bottom plate is connected to the first groove plate, the second groove plate, the third groove plate, and the fourth groove plate. The protective lip is connected to the first groove plate. The second groove plate and the fourth groove plate are connected to the rotating shaft.

[0013] The upper end of the first groove plate extends out of the third groove plate.

[0014] In some embodiments, the upper end of the second groove plate extends beyond the fourth groove plate along the height direction, and the portion of the upper end of the second groove plate extending beyond the fourth groove plate is provided with an operating handle.

[0015] In some embodiments, the collecting device includes a locking member that is slidably disposed along the width direction of the strip, the locking member having a slot for receiving the operating handle.

[0016] In some embodiments, the slag receiving trough is further provided with a slag discharge structure and a door, the third trough plate is provided with a slag discharge port, the slag discharge structure is connected to the trough body through the slag discharge port, and the door body is operably used to cover the slag discharge port.

[0017] In some embodiments, the frame is provided with a proximity switch, and the slag receiving trough includes a contact located on the trough body, wherein when the slag receiving trough is in the waiting position, the contact is close to the proximity switch.

[0018] In a second aspect of this application, an acid rolling line is provided, including the grinding debris collection device of the first aspect.

[0019] The grinding debris collection device provided according to the embodiments of this application includes a frame and a slag receiving groove. The slag receiving groove is located on one side of the strip steel, and its bottom is rotatably connected to the frame via a rotating shaft to switch between a collection position and a waiting position. When the slag receiving groove is in the collection position, the contact surfaces of the first lip and the second lip are both in contact with the surface of the stationary strip steel, thus sealing the strip steel with the protective lip and facilitating the falling of grinding debris into the slag receiving groove. When the slag receiving groove is in the waiting position, there is a gap between the slag receiving groove and the strip steel, thus not affecting the normal operation of the strip steel. Attached Figure Description

[0020] Figure 1 A schematic diagram of the collection device of this application in the waiting position is shown.

[0021] Figure 2 It shows Figure 1 Another structural diagram from another angle.

[0022] Figure 3 It shows Figure 1 Another structural diagram from another angle.

[0023] Figure 4 It shows Figure 1 The main view.

[0024] Figure 5 It shows Figure 4 AA sectional view.

[0025] Figure 6 It shows Figure 5 A magnified view of a portion of the image.

[0026] Figure 7 It shows Figure 1 A magnified view of a portion of the image.

[0027] Figure 8 A schematic diagram of the structure of the collecting device and the guide roller is shown.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1000 - Collection device;

[0030] 100-Frame, 110-Proximity switch, 120-Locking component, 130-Limit block, 200-Slag receiving trough, 210-Trough body, 211-First trough plate, 212-Second trough plate, 213-Third trough plate, 2131-Slag outlet, 214-Fourth trough plate, 215-Bottom plate, 216-Operating handle, 217-Door body, 220-Protective lip, 221-First lip, 222-Second lip, 223-Connecting piece, 230-Slag discharge structure, 231-Slag discharge channel, 240-Contact component, 250-Rotating shaft; 300-Strip steel; 401-Directional roller. Detailed Implementation

[0031] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] The first aspect of this application provides a grinding debris collection device that can collect the debris generated during the grinding of vertically arranged strip steel, thus solving the technical problem of debris falling onto the guide roller and affecting the surface quality of the strip steel.

[0033] This application is described below with reference to the accompanying drawings and specific embodiments:

[0034] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The collection device 1000 provided in this application includes a frame 100 and a slag receiving trough 200. The frame 100 is the mounting base for the slag receiving trough 200, and the frame 100 has a through space for the strip steel 300 to pass through, so that the strip steel 300 does not interfere with the frame 100 during normal operation. The slag receiving trough 200 is located on one side of the strip steel 300, and its bottom is rotatably connected to the frame 100 via a pivot 250 to switch between a collection position and a waiting position; the slag receiving trough 200 includes a trough body 210 and a protective lip 220. Please refer to [link to relevant documentation]. Figure 6 The protective lip 220 includes a first lip 221 and a second lip 222, both connected to the same wall of the groove 210. The lower end of the first lip 221 is connected to the inner wall of the groove 210, and the lower end of the second lip 222 is connected to the outer wall of the groove 210. The upper ends of the first lip 221 and the second lip 222 are inclined toward the strip 300 and are both provided with a contact surface for contacting the surface of the strip 300. The contact surface of the first lip 221 is higher than the contact surface of the second lip 222. Both the first lip 221 and the second lip 222 are rubber lip pieces.

[0035] The bottom of the slag receiving trough 200 is hinged to the frame 100. In specific implementation, the rotating shaft 250 is parallel to the width direction of the strip 300, and the slag receiving trough 200 is located above the steering roller 401. The slag receiving trough 200 is hinged to the frame 100, so its upper part can rotate around the rotating shaft 250, thereby moving closer to the strip 300 in the collection position or away from the strip 300 in the waiting position. The upper ends of the first lip 221 and the second lip 222 of the protective lip 220 are both inclined towards the strip steel 300. The lower end of the first lip 221 is connected to the inner wall of the tank 210, and the upper end of the contact surface is in contact with the strip steel 300, which has good sealing performance. Debris will be collected along the first lip 221 into the tank 210. The lower end of the second lip 222 is connected to the outer wall of the tank 210, and the upper end of the contact surface is in contact with the strip steel 300. The second lip 222 is a rubber lip, which will not scratch the strip steel 300 and can prevent the tank 210 from directly contacting the strip steel 300 and scratching the strip steel 300.

[0036] During the operation of strip steel 300, operators inspect the surface of the vertically positioned grinding section. If defects such as scale are found, strip steel 300 stops operating, and the defects are ground. Since the slag receiving trough 200 is located above the guide roller 401, when it is in the collection position, the contact surfaces of the first lip 221 and the second lip 222 are in contact with strip steel 300 without gaps, allowing the debris generated during grinding to fall into the slag receiving trough 200. After grinding, the slag receiving trough 200 switches to the waiting position. Because there is a gap between the slag receiving trough 200 and strip steel 300 when it is in the waiting position, the continued operation of strip steel 300 will not interfere with the slag receiving trough 200, ensuring the normal operation of pickling.

[0037] In some implementations, please refer to Figure 5 as well as Figure 6 The protective lip 220 also includes a connecting piece 223. The first lip piece 221 and the second lip piece 222 are both connected to the connecting piece 223. The first lip piece 221, the second lip piece 222, and the connecting piece 223 together form a connecting groove into which the wall of the slag receiving tank 200 extends. The connecting piece 223 can be a rubber sheet with a certain degree of elasticity. When the protective lip 220 is connected to the slag receiving tank 200, the first lip piece 221, the second lip piece 222, and the connecting piece 223 can be in a stretched state. The first lip piece 221 and the second lip piece 222 are connected through the connecting piece 223, and the protective lip 220 is connected to the slag receiving tank 200 by fitting the connecting groove into the wall of the slag receiving tank 200. The connection method is simple and easy to disassemble and replace. The first lip piece 221, the second lip piece 222, and the connecting piece 223 can be an integral structure, providing good connection strength and simplifying processing.

[0038] In other embodiments, the first lip 221 and the second lip 222 can also be connected to the slag receiving tank 200 by adhesive bonding, still achieving protection of the strip steel 300 and collection of debris. In some embodiments, the first lip 221 can be 8-15 mm higher than the second lip 222, for example, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm or 14 mm.

[0039] In some embodiments, the size of the protective lip 220 is larger than the size of the strip 300 along the width direction of the strip 300. That is, the protective lip 220 extends out of the strip 300 on both sides along the width direction of the strip 300, so as to collect the debris generated by grinding along the entire width direction of the strip 300.

[0040] In other embodiments, along the width direction of the strip 300, one side of the protective lip 220 is flush with the strip 300, and the other side extends out of the strip 300, which can also collect the debris generated by grinding along the entire width direction of the strip 300. However, in this case, the protective lip 220 is preferably close to the grinding position to reduce the risk of debris scattering everywhere.

[0041] In some embodiments, the first lip 221 and the second lip 222 are spaced apart and do not interfere with each other. In other embodiments, the first lip 221 and the second lip 222 may also be fitted together.

[0042] The trough body 210 of the slag receiving trough 200 is the main structure. In some embodiments, please refer to [reference needed]. Figure 2 as well as Figure 3 The trough 210 includes a first trough plate 211, a second trough plate 212, a third trough plate 213, a fourth trough plate 214, and a bottom plate 215. The first trough plate 211 and the third trough plate 213 are arranged opposite to each other, and the second trough plate 212 and the fourth trough plate 214 are arranged opposite to each other. The second trough plate 212 is connected to the first trough plate 211 and the third trough plate 213, and the fourth trough plate 214 is connected to the first trough plate 211 and the third trough plate 213. The bottom plate 215 is connected to the first trough plate 211, the second trough plate 212, the third trough plate 213, and the fourth trough plate 214. The protective lip 220 is connected to the first trough plate 211. The second trough plate 212 and the fourth trough plate 214 are connected to the rotating shaft 250.

[0043] The trough 210, with its opening at the top, is formed by four grooved plates and a base plate 215, making it easy to process and match with strip steel 300. The first grooved plate 211, the second grooved plate 212, the third grooved plate 213, the fourth grooved plate 214, and the base plate 215 can be connected by welding or by integral stamping. Of course, in other embodiments, the trough 210 can also be set as a semi-cylindrical shape, which can also achieve the collection of debris.

[0044] In some embodiments, please refer to Figure 2 Along the height direction, the first groove plate 211 extends upward beyond the third groove plate 213, meaning the groove plate closer to the strip 300 is higher than the groove plate farther from the strip 300. This facilitates observation of debris collection and also saves materials and reduces costs. In other embodiments, the tops of the first groove plate 211 and the second groove plate 212 can also be flush, still achieving debris collection.

[0045] In some embodiments, the second groove plate 212 extends upwards along the height direction, that is, the upper end of the second groove plate 212 extends beyond the fourth groove plate 214. This facilitates the provision of an operating handle 216 on the portion of the second groove plate 212 extending upwards beyond the fourth groove plate 214. In other embodiments, the upper end of the second groove plate 212 is flush with the upper end of the fourth groove plate 214, and the operating handle 216 is mounted on the second groove plate 212 via a bracket, which also achieves the provision of the operating handle 216.

[0046] In some embodiments, the slag receiving trough 200 further includes a slag discharge structure 230 and a door 217. The third trough plate 213 has a slag discharge port 2131. The slag discharge structure 230 communicates with the trough body 210 through the slag discharge port 2131, and the door 217 operably covers the slag discharge port 2131. The slag discharge structure 230 facilitates the discharge of slag collected in the trough body 210. In some embodiments, the slag discharge structure 230 may have a slag discharge channel 231, which communicates with the trough body 210 through the slag discharge port 2131, thereby achieving slag discharge. The slag discharge structure 230 may have a slag discharge trough, which constitutes the slag discharge channel 231. The door 217 and the third trough plate 213 may be connected by a plug-in connection or by a hinge.

[0047] In some embodiments, please refer to Figure 1 as well as Figure 4 The collecting device 1000 includes a locking member 120 slidably disposed along the width direction of the strip 300. The locking member 120 has a slot 121 for accommodating an operating handle 216. When the slag receiving trough 200 is in the waiting position, the operating handle 216 is located in the slot 121, so that the slag receiving trough 200 is stably maintained in the waiting position. In some embodiments, the frame 100 is provided with a locking hole, and the operating handle 216 is also provided with a locking hole. When the slag receiving trough 200 is in the waiting position, the locking pin is inserted into the locking holes of the frame 100 and the operating handle 216, which can also achieve the stable maintenance of the slag receiving trough 200 in the waiting position.

[0048] In some embodiments, please refer to Figure 4 as well as Figure 7The frame 100 is equipped with a proximity switch 110, and the slag receiving trough 200 includes a contact element 240 located on the trough body 210. When the slag receiving trough 200 is in the waiting position, the contact element 240 is close to the proximity switch 110, at which time the strip 300 can switch from a static state to a running state. In some embodiments, the frame 100 is equipped with a limiting block 130, and the proximity switch 110 and the limiting block 130 are arranged sequentially along the width direction of the strip 300. When the slag receiving trough 200 is in the waiting position, the side of the contact element 240 is close to the proximity switch 110, and the bottom surface of the contact element 240 cooperates with the top surface of the limiting block 130.

[0049] The through space of frame 100, along the width direction of strip 300, must be larger than the width of the pickling line. In practice, the width of this space along the width direction of strip 300 can be 150-250mm larger than the width of the pickling line, for example, 160mm, 170mm, 180mm, 200mm, 210mm, or 230mm. For instance, if the width of the pickling line is 2150mm, the through space along the width direction of strip 300 can be 2350mm. This design prevents strip 300 from shifting and causing frame 100 to be unable to cover it.

[0050] Based on the same technical concept as the first aspect, the second aspect of this application provides an acid rolling line.

[0051] The pickling line provided in this application includes a grinding debris collection device 1000 according to any embodiment of the first aspect.

[0052] The pickling and rolling line includes a pickling section, an inspection section, and a cold rolling section arranged sequentially along the process. The pickling section mainly cleans the iron oxide scale on the surface of the strip 300 with acid. The inspection section mainly checks for defects on the surface of the strip 300. The cold rolling section mainly thins the strip 300. The collecting device 1000 is located in the inspection section and is positioned above the guide roller 401 of the inspection section.

[0053] The proximity switch 110 is electrically connected to the control module of the pickling line. When the signal from the proximity switch 110 disappears, the production line cannot start, ensuring the safety of using the collection device 1000 during grinding and preventing personal injury accidents caused by misoperation during grinding. When installing the collection device 1000, the center of the through-space can coincide with the center of the inspection section.

[0054] The grinding debris collection device 1000 and pickling line provided in this application have at least the following advantages:

[0055] (1) When defects are detected on the surface of the strip steel 300 that require grinding, the strip steel 300 stops running, and the slag collection trough 200 switches to the collection position. The staggered lips of the first lip 221 and the second lip 222 made of rubber contact the strip steel 300, ensuring that the slag is collected in close contact with the strip steel 300 without scraping, thus preventing secondary contamination by the slag. After grinding, the slag collection trough 200 is swung to the waiting position and locked by the locking part 120, so that the slag collection trough 200 does not affect the production line.

[0056] (2) When the slag receiving trough 200 swings to the waiting position, the door 217 can be opened, and the slag can be discharged and cleaned through the slag outlet 2131 and the slag discharge structure 230 to prevent the slag from accumulating and overflowing in the slag receiving trough 200.

[0057] (3) The collection device 1000 is easy to operate and clean, and the installation area is reliable. It solves the technical problem that the debris generated by the grinding of the strip steel 300 falls onto the lower guide roller 401, and after being squeezed by the strip steel 300 and the roller surface, the debris will stick to the surface of the rubber roller, causing secondary damage to the strip steel 300.

[0058] (3) When the slag receiving trough 200 is in the waiting position, it is locked by the locking part 120, which improves the safety of the device.

[0059] (4) The proximity switch 110 is interlocked with the start-up conditions of the production line. If the signal of the proximity switch 110 disappears, the production line cannot be started, ensuring the safety of the collection device 1000 during grinding and preventing personal injury accidents caused by misoperation during grinding.

[0060] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0062] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0064] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A grinding debris collection device for collecting debris generated during the grinding of vertically arranged steel strips, characterized in that, The collection device includes: The frame has a through space for the strip steel to pass through; A slag receiving trough is located on one side of the strip steel, and its bottom is rotatably connected to the frame via a pivot to switch between a collection position and a waiting position. The slag receiving trough includes a trough body and a protective lip. The protective lip includes a first lip and a second lip, both connected to the same wall of the trough body. The lower ends of the first lip and the second lip are respectively connected to the inner wall and the outer wall of the trough body. The upper ends of the first lip and the second lip are both inclined towards the strip steel and are both provided with a contact surface for contacting the surface of the strip steel. The contact surface of the first lip is higher than the contact surface of the second lip. When the slag receiving trough is located in the collection position, the contact surfaces of the first lip and the second lip are both in contact with the strip steel so that the debris falls into the slag receiving trough; when the slag receiving trough is located in the waiting position, there is a gap between the slag receiving trough and the strip steel.

2. The grinding debris collection device according to claim 1, characterized in that, The protective lip also includes a connecting piece, to which both the first lip piece and the second lip piece are connected. The first lip piece, the second lip piece, and the connecting piece together form a connecting groove into which the wall of the slag receiving groove extends.

3. The grinding debris collection device according to claim 2, characterized in that, The first lip is 8-15 mm higher than the second lip; along the width direction of the strip, the size of the protective lip is larger than the size of the strip.

4. The grinding debris collection device according to claim 2, characterized in that, There is a gap between the first lip piece and the second lip piece.

5. The grinding debris collection device according to any one of claims 1-4, characterized in that, The groove includes a first groove plate, a second groove plate, a third groove plate, a fourth groove plate, and a bottom plate. The first groove plate and the third groove plate are arranged opposite to each other, and the second groove plate and the fourth groove plate are arranged opposite to each other. The second groove plate is connected to the first groove plate and the third groove plate, and the fourth groove plate is connected to the first groove plate and the third groove plate. The bottom plate is connected to the first groove plate, the second groove plate, the third groove plate, and the fourth groove plate. The protective lip is connected to the first groove plate. The second groove plate and the fourth groove plate are connected to the rotating shaft. The upper end of the first groove plate extends out of the third groove plate.

6. The grinding debris collection device according to claim 5, characterized in that, Along the height direction, the upper end of the second groove plate extends out of the fourth groove plate, and the portion of the upper end of the second groove plate extending out of the fourth groove plate is provided with an operating handle.

7. The grinding debris collection device according to claim 6, characterized in that, The collecting device includes a locking member that is slidably disposed along the width direction of the strip, and the locking member is provided with a slot for accommodating the operating handle.

8. The grinding debris collection device according to claim 5, characterized in that, The slag receiving trough is also provided with a slag discharge structure and a door. The third trough plate is provided with a slag discharge port. The slag discharge structure is connected to the trough body through the slag discharge port. The door body can operably cover the slag discharge port.

9. The grinding debris collection device according to any one of claims 1-4, characterized in that, The frame is equipped with a proximity switch, and the slag receiving tank includes a contact member located on the tank body. When the slag receiving tank is in the waiting position, the contact member is close to the proximity switch.

10. A pickling and rolling line, characterized in that, The grinding debris collection device includes any one of claims 1-9.

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