Cooling device

Abstract

The invention provides a cooling device which comprises a first collecting pipe and a second collecting pipe, a plurality of nozzles are arranged on the first collecting pipe at intervals, a first water nozzle is arranged in the middle of the first collecting pipe, the caliber size of the first water nozzle is larger than that of the nozzles, and the nozzles and the first water nozzle are used for spraying cooling liquid to a pinch roll; a plurality of nozzles are arranged on the second collecting pipe at intervals, a second water nozzle is arranged in the middle of the second collecting pipe, the caliber size of the second water nozzle is smaller than that of the nozzles, and the nozzles and the second water nozzle are used for spraying cooling liquid to the pinch roll; the wear detection part is used for detecting the wear condition of the middle part of the pinch roll; and the controller is used for controlling the first collecting pipe or the second collecting pipe to spray cooling liquid to the pinch roll according to the wear condition detected by the wear detection part. By means of the arrangement, the pinch roll is axially partitioned to achieve cooling at different temperatures, convex roll shapes formed in the middle of the pinch roll are slowed down, the adverse effect of concave roll shapes can be counteracted, roll shape control over the pinch roll is achieved, and it is guaranteed that strip steel is stably conveyed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cooling devices for winding pinch rollers, and in particular to a cooling device. Background Art

[0002] The coiling pinch roller is a device that is arranged in front of the coiler and uses roller pressure to convey the strip. When the head of the strip reaches the pinch roller of the coiler, the strip head is pre-bent to make it easier for the strip to enter the coiler. When the strip is stably coiled on the coiler, the pinch roller and the reel keep the speed synchronized, and the tension is reasonably distributed between the finishing mill and the coiler to ensure the coil shape. After the tail of the strip leaves the finishing mill, the pinch roller operates at a certain hysteresis rate, which has a certain dragging effect on the tail of the strip. In the entire coiling process, the pinch roller is fully involved in the conveying, and the roller gap shape of the pinch roller plays a vital role in the stability of the strip transmission.

[0003] Due to the long service life of the pinch rollers and the high operating temperature, the flat roller type will form a convex roller type in the early stage of the pinch roller service life due to the contact between the middle part and the strip. If the strip does not enter the coiler in a centered state, the convex roller type will aggravate the deviation of the strip, resulting in loss of coil control or unilateral edge breakage defects of the strip. When the pinch rollers are used for a long time and wear a lot, the thermal convexity of the pinch rollers themselves is not enough to compensate for the wear of the roller gap, resulting in the formation of a concave roller type, which reduces the effect of the pinch rollers or even makes them ineffective, causing the strip side guide and the coiler to form an arch sleeve, resulting in quality edge breakage, folding defects, and even accidents.

[0004] Therefore, it is necessary to provide a cooling device to at least partially solve the problems existing in the prior art. Summary of the invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0006] To this end, the present disclosure provides a cooling device;

[0007] In view of this, according to an embodiment of the present disclosure, a cooling device is proposed, comprising:

[0008] A first header, wherein a plurality of nozzles are arranged at intervals on the first header, and a first water nozzle is arranged in the middle of the first header, wherein the caliber of the first water nozzle is larger than the caliber of the nozzle, wherein the nozzle and the first water nozzle are used to spray cooling liquid to the pinch roller;

[0009] A second header, wherein a plurality of nozzles are arranged at intervals on the second header, and a second water nozzle is arranged in the middle of the second header, wherein the caliber of the second water nozzle is smaller than the caliber of the nozzle, wherein the nozzle and the second water nozzle are used to spray cooling liquid to the pinch roller;

[0010] A wear detection unit is used to detect the wear condition of the middle part of the pinch roller;

[0011] The controller is used for controlling the first header or the second header to spray cooling liquid to the pinch roller according to the wear condition detected by the wear detection unit.

[0012] In a feasible implementation manner, the caliber of the first water nozzle is 8 mm to 10 mm;

[0013] The nozzle has a diameter of 6 mm to 7 mm.

[0014] In a feasible implementation, the diameter of the second water nozzle is 4 mm to 6 mm.

[0015] In a feasible implementation manner, the wear detection unit includes:

[0016] A distance detection member is used to detect the effective rotation distance value of the pinch roller;

[0017] Wear detection part, used to detect the wear of the middle part of the pinch roller;

[0018] A definition unit is used to divide the wear degree interval and determine the wear degree interval in which the rotation distance value and the wear amount are located;

[0019] Wherein, when both the effective rotation distance value and the wear amount are within the first wear degree range, the controller controls the first header to spray the cooling liquid to the pinch roller;

[0020] When at least one of the effective rotation distance value and the wear amount exceeds the first wear degree range and is within the second wear degree range, the controller controls the second header to spray coolant to the pinch roller;

[0021] The wear degree range includes the effective rotation distance range and the wear amount range.

[0022] In a feasible implementation, it also includes:

[0023] The alarm device sends out a warning that the pinch roller is scrapped when at least one of the rotation distance value and the wear amount exceeds a second wear degree range.

[0024] In a feasible implementation, it also includes:

[0025] A three-way structure, the three-way structure includes a first channel, a second channel and a third channel;

[0026] Wherein, the first channel is used to be connected to a cooling liquid source;

[0027] The second channel is connected to the first water nozzle and the nozzle of the first header;

[0028] The third channel is connected to the second water nozzle and the nozzle of the second header;

[0029] The regulating member is used to adjust the connectivity of the three channels of the three-way structure.

[0030] In a feasible implementation manner, the regulating member is a valve plug and a driving member, wherein, when the first header is used to spray coolant, the driving member drives the valve plug to block the third channel, and the first channel and the second channel are connected;

[0031] When the second manifold is used to spray coolant, the driving member drives the valve plug to block the second channel, and the first channel is connected to the third channel.

[0032] In a feasible implementation, it also includes:

[0033] A fixed frame is used to fix the cooling device on the fixed beam of the pinch roller.

[0034] In a feasible implementation, it also includes:

[0035] An adjusting structure, the first header and the second header are respectively connected to the adjusting structure, and the angle and position of the first header and the second header relative to the pinch roller are respectively adjusted by the adjusting structure;

[0036] Wherein, when both the effective rotation distance value and the wear amount are within the first wear degree range, the controller controls the adjustment structure to adjust the first header to correspond to the pinch roller;

[0037] When at least one of the effective rotation distance value and the wear amount exceeds the first wear degree range and is located in the second wear degree range, the controller controls the adjustment structure to adjust the second header to correspond to the pinch roller.

[0038] In a feasible implementation manner, two cooling devices are provided, one of which is used to correspond to the upper pinch roller, and the other is used to correspond to the lower pinch roller.

[0039] Compared with the prior art, the present disclosure at least includes the following beneficial effects: The cooling device provided by the embodiment of the present disclosure is used for winding the pinch roller. The cooling device is provided with a first header, a second header, a wear detection unit and a controller. Among them, a plurality of nozzles are arranged at intervals on the first header, and a first water nozzle is arranged at the middle part of the first header for contacting the strip steel, the caliber size of the first water nozzle is larger than the caliber size of the nozzle, the first header can spray cooling liquid to the pinch roller through the nozzle and the first water nozzle, and the cooling efficiency at the first water nozzle is greater than the cooling efficiency of the nozzle. A plurality of nozzles are arranged at intervals on the second header, and a second water nozzle is arranged at the middle part of the second header for contacting the strip steel, the caliber size of the second water nozzle is smaller than the caliber size of the nozzle, the second header can spray cooling liquid to the pinch roller through the nozzle and the second water nozzle, and the cooling efficiency at the second water nozzle is less than the cooling efficiency of the nozzle. The wear detection unit can be used to detect the degree of wear of the middle part of the pinch roller corresponding to the strip steel, and the controller can control the first header and the second header to spray cooling liquid to the pinch roller according to the wear condition of the middle part of the pinch roller detected by the wear detection unit. Specifically, when the middle part of the pinch roller is less worn, the controller controls the first header to spray coolant to the pinch roller to improve the cooling effect on the middle part of the pinch roller, thereby slowing down the formation of a convex roller shape in the middle part of the pinch roller, reducing the wear of the middle part of the pinch roller, and ensuring the stable transmission of the strip. When the middle part of the pinch roller is more worn, and the thermal convexity of the pinch roller itself is not enough to compensate for the wear of the roller gap, resulting in the formation of a concave roller shape, the controller controls the second header to spray coolant to the pinch roller, thereby appropriately reducing the cooling effect on the middle part of the pinch roller, which is conducive to the formation of thermal convexity, compensates for the concave roller shape formed by wear, ensures the stable transmission of the strip, and improves reliability. In this way, the axial division of the pinch roller can be cooled at different temperatures, the roller shape of the pinch roller can be controlled, and the formation of a convex roller shape in the middle part of the pinch roller can be slowed down, avoiding the deviation of the strip, the loss of control of the strip coil shape, and the edge breakage of the strip. It can also offset the adverse effects caused by the formation of a concave roller shape in the middle part of the pinch roller, avoiding the failure of the pinch roller function, the arch sleeve at the tail of the strip, the edge breakage of the strip, and the folding defect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0041] Figure 1 A schematic structural diagram of a cooling device according to an embodiment of the present disclosure;

[0042] Figure 2 A schematic assembly diagram of a cooling device and a pinch roller according to an embodiment of the present disclosure.

[0043] in, Figure 1 and Figure 2 The corresponding relationship between the reference numerals and the component names is as follows:

[0044] 100 cooling device, 110 first header, 111 nozzle, 112 first water nozzle, 120 second header, 121 second water nozzle, 130 three-way structure, 131 first channel, 132 second channel, 133 third channel, 134 valve plug, 200 pinch roller, 210 strip steel. DETAILED DESCRIPTION

[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0046] like Figure 1 and Figure 2 As shown, according to an embodiment of the present disclosure, a cooling device is proposed, including: a first manifold, a plurality of nozzles are arranged at intervals on the first manifold, and a first water nozzle is arranged in the middle of the first manifold, the caliber of the first water nozzle is larger than the caliber of the nozzle, wherein the nozzle and the first water nozzle are used to spray cooling liquid onto the pinch roller; a second manifold, a plurality of nozzles are arranged at intervals on the second manifold, and a second water nozzle is arranged in the middle of the second manifold, the caliber of the second water nozzle is smaller than the caliber of the nozzle, wherein the nozzle and the second water nozzle are used to spray cooling liquid onto the pinch roller; a wear detection unit, used to detect the wear condition of the middle part of the pinch roller; a controller, used to control the first manifold or the second manifold to spray cooling liquid onto the pinch roller according to the wear condition detected by the wear detection unit.

[0047] It can be understood that the cooling device provided in the embodiment of the present disclosure is used for winding the pinch roller. The cooling device is provided with a first header, a second header, a wear detection unit and a controller. Among them, a plurality of nozzles are arranged at intervals on the first header, and a first water nozzle is arranged at the middle part of the first header for contacting the strip steel, the caliber size of the first water nozzle is larger than the caliber size of the nozzle, the first header can spray cooling liquid to the pinch roller through the nozzle and the first water nozzle, and the cooling efficiency at the first water nozzle is greater than the cooling efficiency of the nozzle. A plurality of nozzles are arranged at intervals on the second header, and a second water nozzle is arranged at the middle part of the second header for contacting the strip steel, the caliber size of the second water nozzle is smaller than the caliber size of the nozzle, the second header can spray cooling liquid to the pinch roller through the nozzle and the second water nozzle, and the cooling efficiency at the second water nozzle is less than the cooling efficiency of the nozzle. The wear detection unit can be used to detect the degree of wear of the middle part of the pinch roller corresponding to the strip steel, and the controller can control the first header and the second header to spray cooling liquid to the pinch roller according to the wear condition of the middle part of the pinch roller detected by the wear detection unit. Specifically, when the middle part of the pinch roller is less worn, the controller controls the first header to spray coolant to the pinch roller to improve the cooling effect on the middle part of the pinch roller, thereby slowing down the formation of a convex roller shape in the middle part of the pinch roller, reducing the wear of the middle part of the pinch roller, and ensuring the stable transmission of the strip. When the middle part of the pinch roller is more worn, and the thermal convexity of the pinch roller itself is not enough to compensate for the wear of the roller gap, resulting in the formation of a concave roller shape, the controller controls the second header to spray coolant to the pinch roller, thereby appropriately reducing the cooling effect on the middle part of the pinch roller, which is conducive to the formation of thermal convexity, compensates for the concave roller shape formed by wear, ensures the stable transmission of the strip, and improves reliability. In this way, the axial division of the pinch roller can be cooled at different temperatures, the roller shape of the pinch roller can be controlled, and the formation of a convex roller shape in the middle part of the pinch roller can be slowed down, avoiding the deviation of the strip, the loss of control of the strip coil shape, and the edge breakage of the strip. It can also offset the adverse effects caused by the formation of a concave roller shape in the middle part of the pinch roller, avoiding the failure of the pinch roller function, the arch sleeve at the tail of the strip, the edge breakage of the strip, and the folding defect.

[0048] Exemplarily, the first header is provided with four nozzles and three first water nozzles, and the spacing between adjacent nozzles is equal, the spacing between adjacent first water nozzles is equal, and the four nozzles are symmetrically distributed on both sides of the three first water nozzles. The second header is provided with four nozzles and three second water nozzles, and the spacing between adjacent nozzles is equal, the spacing between adjacent second water nozzles is equal, and the four nozzles are symmetrically distributed on both sides of the three second water nozzles.

[0049] In some examples, the diameter of the first water nozzle is 8 mm to 10 mm; the diameter of the nozzle is 6 mm to 7 mm.

[0050] It can be understood that the caliber size of the first water nozzle can be set to 8mm to 10mm, and the caliber size of the nozzle is 6mm to 7mm, so as to ensure that the caliber of the first water nozzle is appropriate and larger than the caliber of the nozzle, so that the cooling effect of the first water nozzle is greater than the cooling effect of the nozzle, effectively slowing down the formation of hot bulges and avoiding defects such as strip deviation, strip coiling out of control, and strip edge breakage.

[0051] In some examples, the diameter of the second water nozzle is 4 mm to 6 mm.

[0052] It is understandable that the caliber size of the second water nozzle is 4mm to 6mm, and the caliber size of the nozzle is 6mm to 7mm, so as to ensure that the caliber of the second water nozzle is appropriate and smaller than the caliber of the nozzle, so that the cooling effect of the first water nozzle is smaller than the cooling effect of the nozzle, thereby appropriately reducing the cooling effect on the middle of the pinch roller, which is conducive to the formation of thermal convexity, compensating for the concave roller shape formed by wear, so as to offset the adverse effects caused by the concave roller shape formed in the middle of the pinch roller, and avoid the failure of the pinch roller function, the arch sleeve at the tail of the strip, the edge defect of the strip and the folding defect. Ensure the stability of the strip transmission and improve the reliability.

[0053] In some examples, the wear detection unit includes: a distance detection member for detecting the rotation distance value of the pinch roller; a wear amount detection member for detecting the wear amount in the middle of the pinch roller; a definition unit for dividing the wear degree interval and determining the wear degree interval in which the rotation distance value and the wear amount are located; wherein, when both the rotation distance value and the wear amount are within a first wear degree interval, the controller controls the first manifold to spray coolant to the pinch roller; when at least one of the rotation distance value and the wear amount exceeds the first wear degree interval and is within a second wear degree interval, the controller controls the second manifold to spray coolant to the pinch roller; the wear degree interval includes a rotation distance interval and a wear amount interval.

[0054] It can be understood that the wear detection unit is provided with a distance detection member, a wear amount detection member and a delimiting unit. Among them, the effective rotation distance value of the pinch roller, that is, the actual effective distance value of the contact between the pinch roller and the strip steel, can be detected by the distance detection member. The wear amount detection member can detect the outer diameter size of the middle part of the pinch roller when it is not working, so as to determine the wear amount of the middle part of the pinch roller. The delimiting unit can divide the first wear degree interval and the second wear degree interval, and the first wear degree interval includes the first effective rotation distance interval and the first wear amount interval; the second wear degree interval includes the second effective rotation distance interval and the second wear amount interval. The delimiting unit can determine the wear degree interval in which the current wear degree of the pinch roller is located according to the effective rotation distance interval in which the detected effective rotation distance value falls and the wear amount interval in which the wear amount falls. The delimiting unit is electrically connected to the controller. When the effective rotation distance value and the wear amount are both within the first wear degree range, that is, the effective rotation distance value is within the first rotation distance range and the wear amount is within the first wear amount range, the controller controls the first manifold to spray coolant to the pinch roller to effectively slow down the formation of thermal bulges, thereby avoiding strip deviation, strip coil loss of control, and strip edge breakage defects.

[0055] When at least one of the effective rotation distance value and the wear amount exceeds the first wear degree interval and is in the second wear degree interval, that is, the effective rotation distance value is in the first rotation distance interval and the wear amount is in the second wear amount interval; or the effective rotation distance value is in the second rotation distance interval and the wear amount is in the first wear amount interval; or the effective rotation distance value is in the second rotation distance interval and the wear amount is in the second wear amount interval. The controller controls the second manifold to spray coolant to the pinch roller, thereby appropriately reducing the cooling effect on the middle of the pinch roller, facilitating the formation of hot convexity, compensating for the concave roller shape formed by wear, so as to offset the adverse effects caused by the concave roller shape formed in the middle of the pinch roller, and avoiding the failure of the pinch roller action, the arch sleeve at the tail of the strip, the broken edge defect of the strip and the folding defect. Ensure the stable transmission of the strip and improve reliability.

[0056] In some examples, the method further includes: an alarm, wherein when at least one of the rotation distance value and the wear amount exceeds a second wear degree interval, the alarm issues a warning that the pinch roller is scrapped.

[0057] It is understandable that the cooling device is also provided with an alarm. Specifically, when at least one of the effective rotation distance value and the wear amount exceeds the second wear degree interval, that is, the effective rotation distance value is in the second rotation distance interval, and the wear amount exceeds the second wear amount interval; or the effective rotation distance value exceeds the second rotation distance interval, and the wear amount is in the second wear amount interval; or the effective rotation distance value exceeds the second rotation distance interval, and the wear amount exceeds the second wear amount interval. It indicates that the degree of wear of the pinch roller is too large to meet the working requirements, and the pinch roller needs to be replaced. The controller controls the alarm to emit an audible and visual alarm to remind the staff to replace the pinch roller as soon as possible. Ensure the stability of subsequent strip transmission and improve reliability.

[0058] In some examples, such as Figure 1 and Figure 2 As shown, it also includes: a three-way structure, the three-way structure includes a first channel, a second channel and a third channel; wherein the first channel is used to connect to a coolant source through a pump body; the second channel is connected to a first water nozzle and a nozzle of a first manifold; the third channel is connected to a second water nozzle and a nozzle of a second manifold; and an adjusting member is used to adjust the connection state of the three channels of the three-way structure.

[0059] It is understandable that the cooling device is also provided with a three-way structure and an adjusting member. Specifically, the three-way structure is provided with a first channel, a second channel and a third channel. The first channel can be connected to the cooling liquid source through a pump body. The second channel is connected to the first water nozzle and the nozzle of the first manifold, and the third channel is connected to the second water nozzle and the nozzle of the second manifold. In this way, when the adjusting member adjusts the third channel to be closed and the first channel and the second channel are connected, the cooling liquid at the cooling liquid source is pumped to the first water nozzle and the nozzle of the first manifold through the pump body, thereby spraying the cooling liquid to the pinch roller through the first manifold. When the adjusting member adjusts the second channel to be closed and the first channel and the third channel are connected, the cooling liquid at the cooling liquid source is pumped to the second water nozzle and the nozzle of the second manifold through the pump body, thereby spraying the cooling liquid to the pinch roller through the second manifold.

[0060] In some examples, such as Figure 1 and Figure 2 As shown, the regulating member is a valve plug and a driving member, wherein, when the first manifold is used to spray coolant, the driving member drives the valve plug to seal the third channel, and the first channel and the second channel are connected; when the second manifold is used to spray coolant, the driving member drives the valve plug to seal the second channel, and the first channel and the third channel are connected.

[0061] It is understandable that the regulating member may be a valve plug and a driving member. When the first header is used to spray coolant, the driving member drives the valve plug to move between the first channel and the third channel to block the third channel and connect the first channel with the second channel. When the second header is used to spray coolant, the driving member drives the valve plug to move between the first channel and the second channel to block the second channel and connect the first channel with the third channel.

[0062] In some examples, the method further includes: a fixed frame, through which the cooling device is fixed to the fixed beam of the pinch roller.

[0063] It is understandable that the cooling device is also provided with a fixed frame. The cooling device can be fixed to the fixed beam of the pinch roller through the fixed frame, thereby ensuring that the cooling device cools the pinch roller stably and improving reliability.

[0064] In some examples, it also includes: an adjustment structure, the first manifold and the second manifold are respectively connected to the adjustment structure, and the angle and position of the first manifold and the second manifold relative to the pinch roller are respectively adjusted through the adjustment structure; wherein, when the effective rotation distance value and the wear amount are both within the first wear degree range, the controller controls the adjustment structure to adjust the first manifold to correspond to the pinch roller; when at least one of the effective rotation distance value and the wear amount exceeds the first wear degree range and is within the second wear degree range, the controller controls the adjustment structure to adjust the second manifold to correspond to the pinch roller.

[0065] It can be understood that the cooling device is further provided with an adjustment structure, the first header and the second header are respectively connected to the adjustment structure, and the adjustment result is electrically connected to the controller, and the controller can control the adjustment structure to adjust the angle and position of the first header or the second header relative to the pinch roller. Specifically, when the effective rotation distance value and the wear amount are both within the first wear degree range, the controller controls the adjustment structure to adjust the first header to the working position so that the first header corresponds to the pinch roller. When at least one of the effective rotation distance value and the wear amount exceeds the first wear degree range and is within the second wear degree range, the controller controls the adjustment structure to adjust the second header to the working position so that the second header corresponds to the pinch roller.

[0066] In some examples, such as Figure 2 As shown, two cooling devices are provided, one of which is used to correspond to the upper pinch roller, and the other is used to correspond to the lower pinch roller.

[0067] It is understandable that two cooling devices may be provided to cool the upper pinch roller and the lower pinch roller respectively to ensure the cooling effect.

[0068] It should be understood that the terms first, second, etc. are only used to distinguish descriptions and should not be understood as indicating or suggesting relative importance. Although the terms first, second, etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another unit. For example, the first unit may be referred to as the second unit, and similarly, the second unit may be referred to as the first unit without departing from the scope of the exemplary embodiments of the present invention.

[0069] It should be understood that the term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" in this article describes another relationship between associated objects, indicating that two relationships may exist. For example, A / and B can represent two situations: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the previous and next associated objects are in an "or" relationship.

[0070] It should be understood that in the description of the present invention, the terms "upper", "vertical", "inside", "outside" and the like indicate orientations or positional relationships that are customarily placed when the disclosed product is used, or are orientations or positional relationships that are customarily understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0071] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] The terms used herein are only used to describe specific embodiments and are not intended to limit the exemplary embodiments of the present invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates the opposite meaning. It should also be understood that the terms "include", "comprising", "including", and / or "comprising" when used herein specify the existence of the claimed features, integers, steps, operations, units, and / or components, and do not exclude the existence or increase of one or more other features, quantities, steps, operations, units, components, and / or their combinations.

[0073] Specific details are provided in the following description to facilitate a complete understanding of the exemplary embodiments. However, it should be understood by those of ordinary skill in the art that the exemplary embodiments may be implemented without these specific details. In other embodiments, well-known processes, structures, and techniques may not be shown in unnecessary detail to avoid making the exemplary embodiments unclear.

[0074] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

[0075] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field.

Claims

1. A cooling device, characterized in that: include: a first header, wherein a plurality of nozzles are arranged at intervals on the first header, and a first water nozzle is arranged in the middle of the first header, wherein the caliber of the first water nozzle is larger than the caliber of the nozzle, wherein the nozzle and the first water nozzle are used to spray cooling liquid to the pinch roller; a second header, on which a plurality of the nozzles are arranged at intervals, and a second water nozzle is arranged in the middle of the second header, the aperture size of the second water nozzle is smaller than the aperture size of the nozzle, wherein the nozzle and the second water nozzle are used to spray coolant to the pinch roller; A wear detection unit, used to detect the wear condition of the middle part of the pinch roller; The controller is used to control the first header or the second header to spray cooling liquid to the pinch roller according to the wear condition detected by the wear detection unit.

2. The cooling device according to claim 1, characterized in that: The diameter of the first water nozzle is 8mm to 10mm; The nozzle has a diameter of 6 mm to 7 mm.

3. The cooling device according to claim 2, characterized in that: The diameter of the second water nozzle is 4 mm to 6 mm.

4. The cooling device according to claim 1, characterized in that: The wear detection unit comprises: A distance detection member, used for detecting the effective rotation distance value of the pinch roller; A wear detection member, used for detecting the wear of the middle portion of the pinch roller; A definition unit, used for dividing the wear degree interval and determining the wear degree interval in which the effective rotation distance value and the wear amount are located; Wherein, when the effective rotation distance value and the wear amount are both within a first wear degree range, the controller controls the first header to spray cooling liquid to the pinch roller; When at least one of the effective rotation distance value and the wear amount exceeds the first wear degree range and is within the second wear degree range, the controller controls the second header to spray coolant to the pinch roller; The wear degree interval includes the effective rotation distance interval and the wear amount interval.

5. The cooling device according to claim 4, characterized in that: Also includes: An alarm is provided, wherein when at least one of the rotation distance value and the wear amount exceeds the second wear degree range, the alarm issues a warning that the pinch roller is scrapped.

6. The cooling device according to claim 1, characterized in that: Also includes: A three-way structure, the three-way structure comprising a first channel, a second channel and a third channel; Wherein, the first channel is used to be connected to a cooling liquid source; The second channel is connected to the first water nozzle and the nozzle of the first header; The third channel is connected to the second water nozzle and the nozzle of the second header; The adjusting member is used to adjust the connection state of the three channels of the three-way structure.

7. The cooling device according to claim 6, characterized in that: The regulating member is a valve plug and a driving member, wherein, when the first header is used to spray coolant, the driving member drives the valve plug to block the third channel, and the first channel is connected to the second channel; When the second manifold is used to spray coolant, the driving member drives the valve plug to block the second channel, and the first channel is connected to the third channel.

8. The cooling device according to any one of claims 1 to 7, characterized in that: Also includes: A fixed frame is used to fix the cooling device on the fixed crossbeam of the pinch roller.

9. The cooling device according to any one of claims 1 to 7, characterized in that: Also includes: an adjusting structure, wherein the first header and the second header are respectively connected to the adjusting structure, and the angle and position of the first header and the second header relative to the pinch roller are respectively adjusted by the adjusting structure; Wherein, when the effective rotation distance value and the wear amount are both within a first wear degree range, the controller controls the adjustment structure to adjust the first header to correspond to the pinch roller; When at least one of the effective rotation distance value and the wear amount exceeds the first wear degree range and is located in the second wear degree range, the controller controls the adjustment structure to adjust the second header to correspond to the pinch roller.

10. The cooling device according to any one of claims 1 to 7, characterized in that The cooling devices are provided with two, one of which is used to correspond to the upper pinch roller, and the other is used to correspond to the lower pinch roller.

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