Temperature monitoring device, temperature monitoring system and method for a mill

Abstract

The application provides a temperature monitoring device, a temperature monitoring system and a method for a flour mill. The temperature monitoring device is used for monitoring the temperature of a grinding roller of the flour mill, and comprises a shell configured to extend along a first direction, a plurality of temperature sensors arranged at intervals in the shell along the first direction, and a mounting member connected to an end of the shell along the first direction to fix the shell to the flour mill, wherein, in a state of being mounted to the flour mill, the first direction is consistent with the axial direction of the grinding roller, the shell is arranged at intervals with the surface of the grinding roller, and the plurality of temperature sensors are configured to respectively acquire temperature signals of a plurality of axial positions of the grinding roller. The temperature monitoring device according to the application can realize non-contact multi-point temperature monitoring of the grinding roller along the axial direction, and facilitate timely discovery of abnormal conditions such as local temperature rise or uneven temperature distribution of the grinding roller.

Description

Technical Field

[0001] This invention relates to the field of grinding mills, and more particularly to the field of temperature monitoring for grinding mills. More specifically, this invention relates to a temperature monitoring device, a temperature monitoring system, a temperature monitoring method, an electronic device for implementing the temperature monitoring method, a computer-readable storage medium storing instructions for executing the temperature monitoring method, and a computer program product for implementing the temperature monitoring method. Background Technology

[0002] In the wheat milling process, the roller mill is a core piece of equipment affecting grinding efficiency, product quality, and yield. A roller mill typically consists of two grinding rollers that rotate relative to each other at different speeds. Through appropriate roller pitch and the toothed or smooth surfaces of the rollers, the material is crushed, scraped, or ground. The operating condition of the grinding rollers directly affects the ash content, particle size, bran inclusions, color, flour yield, and energy consumption of the flour.

[0003] In actual production, grinding mills may experience dry grinding, localized overheating, or uneven grinding due to factors such as insufficient feeding, uneven material distribution, improper roller spacing adjustment, abnormal airflow, roller wear, poor roller surface condition, or changes in operating parameters. For example, in dry grinding, the rollers may rub directly against each other due to a lack of material buffer, causing the roller surface temperature to rise. Overheating of the rollers can not only lead to over-grinding of materials, increased starch damage, increased flour temperature, or unstable product quality, but also increase roller wear, production energy consumption, maintenance costs, and pose equipment safety risks. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the prior art and to provide a temperature monitoring device, temperature monitoring system and corresponding temperature monitoring method for a grinding mill, so as to realize real-time monitoring of the temperature status of the grinding roller and facilitate timely detection of abnormal temperature conditions of the grinding roller.

[0005] Therefore, according to a first aspect of the present invention, a temperature monitoring device for a grinding mill is provided for monitoring the temperature of the grinding roller of the grinding mill, wherein the temperature monitoring device includes: a housing configured to extend along a first direction; a plurality of temperature sensors spaced apart within the housing along the first direction; and a mounting member connected to an end of the housing along the first direction to be adapted to fix the housing to the grinding mill, wherein the temperature monitoring device is configured such that, when mounted to the grinding mill, the first direction coincides with the axial direction of the grinding roller, the housing is spaced apart from the surface of the grinding roller, and the plurality of temperature sensors are configured to acquire temperature signals at a plurality of axial positions of the grinding roller.

[0006] Based on the above-described technical concept, the present invention may further include any one or more of the following optional forms.

[0007] In some alternative forms, the housing has a sidewall with a plurality of detection sections corresponding to the plurality of temperature sensors, the plurality of temperature sensors being configured to receive thermal radiation emitted by the surface of the grinding roller at a plurality of axial positions through the corresponding detection sections.

[0008] In some alternative configurations, when installed in the grinding mill, the sidewall of the housing is positioned opposite the surface of the grinding roller, and the minimum distance between the sidewall and the surface of the grinding roller is in the range of 2 mm to 15 mm.

[0009] In some alternative forms, the housing has an elongated configuration extending along the first direction and defines a sealed cavity inside the housing, in which a plurality of the temperature sensors are housed.

[0010] According to a second aspect of the present invention, a temperature monitoring system for a grinding mill is provided, the grinding mill including at least two grinding rollers arranged side by side, wherein the temperature monitoring system includes: at least one temperature monitoring device, the temperature monitoring device including at least one set of temperature sensors corresponding to at least one of the grinding rollers, wherein the temperature monitoring device is spaced apart from the surface of the corresponding grinding roller, the at least one set of temperature sensors including a plurality of temperature sensors spaced apart along the axial direction of the corresponding grinding roller, and configured to acquire temperature signals at a plurality of axial positions of the corresponding grinding roller; and a control device, the control device being communicatively connected to the temperature monitoring device, and configured to determine whether the corresponding grinding roller is in an abnormal state based on the temperature signals acquired by the plurality of temperature sensors, and to output a warning signal in response to determining that the corresponding grinding roller is in an abnormal state.

[0011] In some alternative forms, the control device is further configured to: determine temperature data corresponding to multiple axial positions of the corresponding grinding rollers based on a plurality of the temperature signals; and determine that the corresponding grinding roller is in the abnormal state when at least one of the following conditions is met: at least one of the temperature data exceeds a corresponding temperature threshold; or the temperature difference between at least two of the temperature data exceeds a temperature difference threshold.

[0012] In some optional forms, the warning signal includes at least a warning signal and an alarm signal, the abnormal state includes at least a first abnormality level and a second abnormality level with a risk level higher than the first abnormality level, and the temperature threshold includes at least a first temperature threshold and a second temperature threshold greater than the first temperature threshold, and / or the temperature difference threshold includes at least a first temperature difference threshold and a second temperature difference threshold greater than the first temperature difference threshold, wherein the control device is further configured to: determine that the corresponding grinding roller is in the first abnormality level and output a warning signal when at least one of the temperature data exceeds the first temperature threshold, and / or the temperature difference between at least two of the temperature data exceeds the first temperature difference threshold; or determine that the corresponding grinding roller is in the second abnormality level and output an alarm signal when at least one of the temperature data exceeds the second temperature threshold, and / or the temperature difference between at least two of the temperature data exceeds the second temperature difference threshold.

[0013] In some alternative forms, the control device is further configured to: output a first control signal for adjusting the grinding parameters of the mill in response to determining that the corresponding grinding roller is in the first abnormal level; or output a second control signal for controlling the mill to stop operating in response to determining that the corresponding grinding roller is in the second abnormal level.

[0014] In some alternative configurations, the control device is further configured to: acquire current production condition information; determine target historical operating data that matches the current production condition information based on pre-stored historical operating data; determine, based on the target historical operating data, reference temperatures corresponding to multiple axial positions of the grinding roller and / or reference temperature differences between at least two of the axial positions; and determine, based on the determined reference temperatures and / or reference temperature differences, the temperature threshold and / or the temperature difference threshold.

[0015] In some alternative forms, the current production condition information includes at least one of the following: product formulation, grinding roller type, grinding stage, ambient temperature, suction status, and production load.

[0016] According to a third aspect of the present invention, a temperature monitoring method for a grinding mill is provided, the grinding mill including at least two grinding rollers arranged side by side, wherein the temperature monitoring method includes: acquiring temperature signals at multiple axial positions of the grinding rollers corresponding to at least one set of temperature sensors included in at least one temperature monitoring device, wherein the temperature monitoring device is spaced apart from the surface of the corresponding grinding roller, and the at least one set of temperature sensors includes multiple temperature sensors spaced apart along the axial direction of the corresponding grinding roller; determining whether the corresponding grinding roller is in an abnormal state based on the multiple temperature signals; and outputting a warning signal in response to determining that the corresponding grinding roller is in the abnormal state.

[0017] In some alternative forms, the temperature monitoring method further includes: determining temperature data corresponding to multiple axial positions of the corresponding grinding roller based on multiple temperature signals; determining that the corresponding grinding roller is in the abnormal state when at least one of the following conditions is met: at least one of the temperature data exceeds a corresponding temperature threshold; the temperature difference between at least two of the temperature data exceeds a temperature difference threshold.

[0018] In some optional forms, the warning signal includes at least a pre-warning signal and an alarm signal, the abnormal state includes at least a first abnormality level and a second abnormality level with a risk level higher than the first abnormality level, and the temperature threshold includes at least a first temperature threshold and a second temperature threshold greater than the first temperature threshold, and / or the temperature difference threshold includes at least a first temperature difference threshold and a second temperature difference threshold greater than the first temperature difference threshold. The temperature monitoring method further includes: determining that the corresponding grinding roller is in the first abnormality level and outputting a pre-warning signal when at least one temperature data point exceeds the first temperature threshold, and / or the temperature difference between at least two temperature data points exceeds the first temperature difference threshold; or determining that the corresponding grinding roller is in the second abnormality level and outputting an alarm signal when at least one temperature data point exceeds the second temperature threshold, and / or the temperature difference between at least two temperature data points exceeds the second temperature difference threshold.

[0019] In some alternative forms, the temperature monitoring method further includes: in response to determining that the corresponding grinding roller is at the first abnormal level, outputting a first control signal for adjusting the grinding parameters of the mill; or in response to determining that the corresponding grinding roller is at the second abnormal level, outputting a second control signal for controlling the mill to stop operating.

[0020] In some alternative forms, the method further includes: acquiring current production condition information; determining target historical operating data that matches the current production condition information based on pre-stored historical operating data; determining, based on the target historical operating data, a reference temperature corresponding to a plurality of axial positions of the grinding roller and / or a reference temperature difference between at least two of the axial positions; and determining, based on the determined reference temperature and / or the reference temperature difference, a temperature threshold and / or a temperature difference threshold.

[0021] According to a fourth aspect of the present invention, an electronic device is provided, wherein the electronic device includes a memory, a processor, and instructions stored in the memory and executable by the processor, wherein the processor, when executing the instructions, implements the temperature monitoring method for a grinding mill according to a third aspect of the present invention.

[0022] According to a fifth aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium has computer-executable instructions stored thereon for performing the temperature monitoring method for a grinding mill according to a third aspect of the present invention.

[0023] According to a sixth aspect of the present invention, a computer program product is provided, comprising computer-executable instructions, wherein the computer-executable instructions, when executed by at least one processor, implement the temperature monitoring method for a grinding mill according to a third aspect of the present invention.

[0024] According to the temperature monitoring device of the present invention, the mounting component can stably hold the housing on the outer side of the grinding roller surface and maintain a gap between the housing and the surface of the grinding roller. Multiple temperature sensors spaced apart along the first direction of the housing or the axial direction of the grinding roller can respectively acquire temperature signals at multiple axial positions of the grinding roller, and realize non-contact multi-point temperature monitoring of the grinding roller along the axial direction, facilitating timely detection of abnormal conditions such as localized temperature rise or uneven temperature distribution of the grinding roller. Attached Figure Description

[0025] Other features and advantages of the invention will be better understood through the following detailed description of optional embodiments in conjunction with the accompanying drawings, in which the same reference numerals identify the same or similar parts, wherein: Figure 1 A schematic diagram of a grinding mill according to one embodiment of the present invention is shown; Figure 2 It shows Figure 1 A schematic diagram of the grinding rollers in a grinding mill; Figure 3 A schematic diagram of a temperature monitoring device according to an embodiment of the present invention is shown; Figure 4A schematic diagram showing the temperature monitoring device installed in the grinding mill is shown. Figure 5 It shows Figure 4 Partial cross-sectional view; Figure 6 A schematic diagram of a temperature monitoring system according to an embodiment of the present invention is shown; Figure 7 A schematic flowchart of a temperature monitoring method according to an embodiment of the present invention is shown; Figure 8 It shows Figure 7 A schematic flowchart of the sub-steps of step S20 in the process; Figure 9 A schematic flowchart of a temperature monitoring method according to another embodiment of the present invention is shown; and Figure 10 A schematic diagram of an electronic device according to one embodiment of the present invention is shown. Detailed Implementation

[0026] The implementation and use of the embodiments are discussed in detail below. While the exemplary methods and systems described below include software and / or firmware executed on hardware within other components, it should be noted that these examples are merely illustrative and should not be considered limiting. Therefore, although exemplary methods and systems have been described below, those skilled in the art will readily understand that the specific embodiments discussed are merely exemplary of particular ways of implementing and using the invention, and not intended to limit the scope of the invention.

[0027] Furthermore, the flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and systems according to various embodiments of the present invention. It should be noted that the functions indicated in the blocks may occur in a different order than that shown in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, or they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the flowcharts and / or block diagrams, and combinations of blocks in the flowcharts and / or block diagrams, may be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0028] In this document, the expressions "including" or similar synonyms such as "having" are open-ended and do not exclude additional unlisted elements, steps, or components. In this document, "multiple" means two or more, unless otherwise explicitly specified. In this document, terms such as "first," "second," and similar expressions are used for descriptive purposes only and are not used to determine the order of events, unless otherwise stated. Those skilled in the art will understand the specific meaning of the above terms in this document according to the specific circumstances.

[0029] In this article, "axial" refers to the direction along the central axis of the component, and "radial" refers to the direction perpendicular to the axial direction of the component.

[0030] In existing grinding mills, monitoring the mill's operating status mainly relies on the operator's experience and judgment. For example, operators can determine whether the grinding mill is in an abnormal operating state by observing the current of the mill's drive motor, distinguishing the mill's operating sound, checking the material flow rate, manually measuring the temperature using a handheld temperature measuring device, or conducting regular inspections.

[0031] However, the current of the drive motor, the operating noise of the mill, and the material flow rate mainly reflect the overall operating status of the mill. When the grinding rollers experience dry grinding or overheating only in a localized area, these parameters may not change significantly. Manual temperature measurement and periodic inspections can only obtain temperatures at specific times and locations, making it difficult to continuously monitor the temperature status of the grinding rollers. Furthermore, the judgment results are easily influenced by the operator's experience and the frequency of inspections. Moreover, when the material is unevenly distributed along the grinding roller axis, dry grinding or overheating may only occur in a localized area along the roller axis, and the location of the abnormal area may change with variations in feeding conditions, material distribution, and operating parameters. Therefore, single-point temperature measurement or manual inspection is insufficient to promptly detect localized temperature anomalies and is also difficult to promptly link with the mill's operating control system after an anomaly is detected.

[0032] In view of this, one embodiment of the present invention provides a temperature monitoring device for monitoring the temperature of the grinding rollers of a grinding mill. (In conjunction with...) Figure 1 and Figure 2As shown, the grinding mill 1 may include a body 10 and two grinding rollers 20 disposed on the body 10. The two grinding rollers 20 are arranged side by side, and their axial directions X are approximately parallel to each other. A grinding zone is formed between the two grinding rollers 20 for materials (e.g., wheat, barley, corn, etc.) to pass through, and the materials enter the grinding zone through the feed inlet 30. The surface of the grinding rollers 20 may be provided with toothed portions or may be formed with a smooth surface to crush, scrape, or grind the materials according to different grinding requirements. The grinding mill 1 may also include a drive mechanism for driving the two grinding rollers 20 to rotate, a feeding mechanism for conveying materials between the two grinding rollers 20, a gap adjustment mechanism for adjusting the gap between the two grinding rollers 20, and a suction mechanism for forming a suction airflow. The above mechanisms are corresponding mechanisms in existing grinding mills, and the present invention will not elaborate on them.

[0033] During normal grinding operation of the grinding mill 1, the two grinding rollers 20 rotate around their respective central axes, and the two grinding rollers 20 can have different rotational speeds. The axial position of the grinding rollers 20 relative to the machine body 10 remains essentially unchanged during rotation. After the material enters between the two grinding rollers 20, the grinding process is completed under the relative rotation of the two grinding rollers 20.

[0034] To monitor the temperature of the grinding roller 20, this embodiment provides a temperature monitoring device 100. (In conjunction with...) Figures 3 to 5 As shown, the temperature monitoring device 100 may include a housing 110, a plurality of temperature sensors 120, and a mounting component 130. It should be understood that although this embodiment is described using a roller mill including two grinding rollers 20 as an example, the temperature monitoring device 100 can also be used to monitor the temperature of a roller mill having other numbers of grinding rollers, such as four or more grinding rollers.

[0035] The housing 110 is constructed to extend along a first direction D1. The first direction D1 can be understood as the length direction of the housing 110. Multiple temperature sensors 120 are disposed within the housing 110 and arranged at intervals along the first direction D1. The multiple temperature sensors 120 can be arranged at the same interval, or at different intervals depending on the temperature monitoring requirements at different locations on the grinding roller 20. The number of temperature sensors 120 and the distance between adjacent temperature sensors 120 can be determined based on factors such as the axial length of the grinding roller 20, the desired monitoring range, and the temperature monitoring accuracy, and are not limited here.

[0036] Mounting member 130 is connected to the end of housing 110 along the first direction D1 to facilitate securing housing 110 to mill 1. Mounting member 130 may be integrally formed with housing 110 or connected to housing 110 as a separate component. Mounting member 130 may be secured to the body 10 of mill 1, such as... Figure 4As shown, specifically, it is fixed to the inner wall of the machine body 10 near the grinding roller 20. The mounting component 130 can be fixed to the grinding mill 1 by screws, snap-fit ​​structures, clamping structures or other suitable connection structures. The mounting component 130 holds the housing 110 in a predetermined position relative to the grinding roller 20, thereby determining the distance between the housing 110 and the surface of the grinding roller 20. The fixed connection between the mounting component 130 and the grinding mill 1 can also reduce the displacement of the temperature monitoring device 100 relative to the grinding roller 20 during the operation of the grinding mill 1, so that the distance between the temperature monitoring device 100 and the surface of the grinding roller 20 remains substantially stable.

[0037] The temperature monitoring device 100 is configured such that, when installed in the grinding mill 1, the first direction D1 of the housing 110 coincides with the axial direction X of the corresponding grinding roller 20. That is, the first direction D1 is approximately parallel to and separate from the axial direction X of the grinding roller 20, rather than coinciding with it. Thus, multiple temperature sensors 120 correspond to multiple axial positions of the grinding roller 20. Each temperature sensor 120 can acquire the temperature signal at its corresponding axial position, thereby obtaining multi-point temperature information of the grinding roller 20 along its axial direction. The housing 110 is disposed on the outer side of the surface of the grinding roller 20 and spaced apart from the surface of the grinding roller 20 to avoid contact between the housing 110 and the rotating grinding roller 20.

[0038] In this way, the mounting component can stably hold the housing on the outer surface of the grinding roller and maintain a gap between the housing and the surface of the grinding roller. Multiple temperature sensors spaced apart along the first direction of the housing or the axial direction of the grinding roller can acquire temperature signals at multiple axial positions of the grinding roller, and realize non-contact multi-point temperature monitoring of the grinding roller along the axial direction, which facilitates timely detection of abnormal conditions such as local temperature rise or uneven temperature distribution of the grinding roller.

[0039] In the illustrated embodiment, the housing 110 may have an elongated configuration extending along a first direction D1, and a sealed cavity 111 may be defined within the housing 110. A plurality of temperature sensors 120 may be spaced apart within the sealed cavity 111 along the first direction D1. In other words, a plurality of temperature sensors 120 are accommodated within the sealed cavity 111 along the first direction D1. The housing 110 may be made of a hollow profile, such as a hollow aluminum profile, to form an accommodating space extending along the first direction D1 within the housing 110. It should be understood that the material of the housing 110 is not limited to this, and may also be made of other metallic materials, non-metallic materials, or composite materials.

[0040] In some examples, the mounting member 130 may be sealingly connected to the end of the housing 110 in the first direction D1. For example, the mounting member 130 may be sealingly connected to the corresponding end of the housing 110 via a sealing structure such as a sealing ring. A line 140 for transmitting temperature signals or supplying power to the temperature sensor 120 may be led out through the mounting member 130, and the line exit may be sealed by other sealing structures such as sealing joints. Thus, by housing multiple temperature sensors 120 within the sealed cavity 111, the possibility of dust generated during grinding entering the housing 110 and adhering to the temperature sensors 120 or internal wiring can be reduced, thereby improving the operational reliability of the temperature monitoring device 100 in dusty environments.

[0041] like Figure 5 As shown, the housing 110 has a sidewall 113 disposed opposite to the surface of the grinding roller 20. A sealing cavity 111 is located on the side of the sidewall 113 facing away from the grinding roller 20. The sidewall 113 may be provided with a plurality of detection portions 112 arranged at intervals along a first direction D1. The plurality of detection portions 112 may be correspondingly disposed with a plurality of temperature sensors 120, with the detection end of each temperature sensor 120 facing the corresponding detection portion 112. In this embodiment, the temperature sensors 120 are non-contact temperature sensors, such as infrared temperature sensors. Thermal radiation emitted from the surface of the grinding roller 20 at multiple axial positions can reach the corresponding temperature sensor 120 through the detection portions 112, allowing each temperature sensor 120 to obtain a temperature signal at the corresponding axial position. In some examples, the detection portions 112 may be made of a polymer material capable of transmitting infrared radiation. The size and shape of the detection portions 112 can be determined based on the size of the detection end of the temperature sensor 120 and the temperature monitoring range, etc., and are not limited here. Thus, each temperature sensor 120 can receive thermal radiation emitted from the grinding roller 20 at the corresponding axial position through the corresponding detection portion 112. Thus, while using the sealed cavity 111 to protect the temperature sensor 120 and the internal circuitry, an infrared detection path can be formed from the surface of the grinding roller 20 to each temperature sensor 120, enabling multi-point non-contact temperature monitoring of the grinding roller 20 along the axial direction.

[0042] exist Figure 5In the mill, with the temperature monitoring device installed, there is a minimum distance d between the side wall 113 of the housing and the surface of the grinding roller 20. This minimum distance d refers to the shortest straight-line distance between the outer surface of the side wall 113 and the surface of the grinding roller 20. In some examples, the minimum distance d can be in the range of 2mm to 15mm, for example, 2mm, 3mm, 5mm, 8mm, 10mm, 12mm, or 15mm. It should be understood that the value range of the minimum distance d is not limited to this and can be determined based on factors such as the size of the grinding roller 20, the degree of vibration during the operation of the mill 1, and the detection distance of the temperature sensor 120. In this way, an installation and operating clearance can be reserved between the rotating grinding roller 20 and the housing 110, reducing the possibility of contact between the housing 110 and the grinding roller 20 due to assembly errors, radial runout of the grinding roller 20, or vibration during the operation of the mill 1. In addition, the temperature sensor 120 can be placed as close as possible to the surface of the grinding roller 20, so that the detection range of each temperature sensor 120 is limited to the corresponding axial region of the grinding roller 20, which is beneficial to obtaining local temperature information of the grinding roller 20 along the axial direction.

[0043] Reference Figure 6 According to another embodiment of the present invention, a temperature monitoring system 2 for a grinding mill 1 is also provided. The temperature monitoring system 2 includes at least one temperature monitoring device 100 and a control device 200. The temperature monitoring device 100 may be the temperature monitoring device of any of the foregoing embodiments, and its specific structure and its installation relationship with the grinding roller 20 will not be described in detail here.

[0044] The temperature monitoring device 100 may include at least one set of temperature sensors 120, which are correspondingly arranged with at least one grinding roller 20. For example, in the case where the grinding mill 1 includes two grinding rollers (including a fast roller and a slow roller) arranged side by side, the temperature monitoring system 2 may include one temperature monitoring device 100, which may include a set of temperature sensors 120 corresponding to one of the two grinding rollers 20 to monitor the temperature of the corresponding grinding roller 20. Preferably, the set of temperature sensors 120 may be corresponding to the fast roller to monitor the temperature state of the grinding roller with a higher rotational speed. It should be understood that the temperature sensors 120 may also be corresponding to the slow roller. In the case where the temperature monitoring system 2 includes two temperature monitoring devices 100, each of the two temperature monitoring devices 100 may each include a set of temperature sensors 120 and be corresponding to the fast roller and the slow roller respectively to monitor the temperature state of the two grinding rollers 20 respectively. Alternatively, the temperature monitoring system 2 may include only one temperature monitoring device 100. The housing 110 of this device 100 may include two sets of temperature sensors 120, each corresponding to and spaced apart from the two grinding rollers 20. Different sidewalls of the housing 110, respectively opposite to the surfaces of the two grinding rollers 20, may each have a detection section 112 corresponding to the two sets of temperature sensors 120, allowing the two sets of temperature sensors 120 to acquire temperature signals at multiple axial positions of the two grinding rollers 20. If the grinding mill 1 includes more grinding rollers 20, the temperature monitoring device 100 may be installed at some or all of the grinding rollers 20, depending on monitoring requirements.

[0045] The control device 200 is communicatively connected to the temperature monitoring device 100 to receive temperature signals acquired by multiple temperature sensors 120. Specifically, the temperature monitoring device 100 can be connected to the control device 200 via signal lines, a communication bus (e.g., a CAN bus), or an industrial communication network. The temperature signals output by the temperature sensors 120 can be analog or digital signals. If the temperature signal is analog, the control device 200 may further include a signal conversion unit (not shown). The signal conversion unit can amplify, filter, and / or perform analog-to-digital conversion on the temperature signal to form a digital signal that can be processed by the control device 200. When the temperature signal output by the temperature sensors 120 is a digital signal, the digital signal can be directly transmitted to the control device 200.

[0046] The control device 200 can be implemented by a programmable logic controller, an embedded controller, an existing controller of the grinding mill 1, or a combination of the above devices, and is not limited thereto. The control device 200 can also store the correspondence between the temperature monitoring device 100, multiple temperature sensors 120, and multiple axial positions of the grinding roller 20. For example, each temperature sensor 120 can have a corresponding sensor identifier, and the control device 200 can determine the grinding roller 20 and its axial position corresponding to the received temperature signal based on the sensor identifier. When multiple temperature monitoring devices 100 are provided, each temperature monitoring device 100 can also have a corresponding device identifier to distinguish the grinding roller 20 corresponding to different temperature monitoring devices 100.

[0047] The control device 200 determines whether the corresponding grinding roller 20 is in an abnormal state based on temperature signals acquired by multiple temperature sensors 120. The abnormal state may include overall temperature abnormality, local temperature abnormality, and / or abnormal axial temperature distribution of the grinding roller 20. In response to determining that the corresponding grinding roller 20 is in an abnormal state, the control device 200 outputs a warning signal. The warning signal may be sent to the operation terminal of the grinding mill 1, an audible alarm, a visual alarm, and / or a remote monitoring device (e.g., the operator's mobile phone, tablet, etc.) to alert the operator of the abnormal temperature of the grinding roller 20 through text, graphics, sound, light, or a combination thereof. The warning signal may include the identifier of the abnormal grinding roller 20, the time of the abnormality, the type of abnormality, temperature information, and the location information of the corresponding temperature sensor 120.

[0048] In this way, the temperature monitoring system 2 can acquire temperature signals at multiple axial positions of the grinding roller 20 using multiple temperature sensors 120 spaced apart along the axial direction of the grinding roller 20. The control device 200 automatically determines whether the grinding roller 20 is in an abnormal state based on the multiple temperature signals, and outputs a warning signal when it determines that the grinding roller 20 is in an abnormal state, thereby reducing the reliance on manual inspection and operator experience, and facilitating the timely detection of temperature abnormalities in the grinding roller 20.

[0049] Furthermore, the control device 200 can determine temperature data corresponding to multiple axial positions of the corresponding grinding roller 20 based on temperature signals acquired by multiple temperature sensors 120. Then, the control device 200 can compare each temperature data with a corresponding temperature threshold. When at least one temperature data exceeds the corresponding temperature threshold, the control device 200 determines that the corresponding grinding roller 20 is in an abnormal state. In some examples, the temperature threshold can be in the range of 80°C to 150°C. Thus, it can be determined whether the grinding roller 20 experiences overall overheating or localized overheating at at least one axial position.

[0050] Alternatively or additionally, the control device 200 may also determine the temperature difference between at least two temperature data points and compare this temperature difference with a temperature difference threshold. In this embodiment, the temperature difference refers to the absolute value of the difference between two temperature data points, specifically the temperature difference between temperature data points corresponding to every two adjacent axial positions, the difference between the maximum and minimum temperature data points among multiple temperature data points, or the difference between temperature data points corresponding to any two axial positions. In some examples, the temperature difference threshold may be in the range of 15°C to 50°C.

[0051] In this way, by setting temperature threshold and temperature difference threshold, it is possible to identify excessively high overall or localized temperatures of the grinding roller 20, as well as abnormal temperature distribution along the axial direction of the grinding roller 20, thereby improving the ability to identify abnormalities such as localized dry grinding, localized overheating, or uneven grinding. It should be understood that the above-mentioned temperature threshold and temperature difference threshold are not limited to those described herein and can be modified as needed.

[0052] In some embodiments, the abnormal state of the grinding roller 20 may include at least a first abnormality level and a second abnormality level with a risk level higher than the first abnormality level. The warning signal output by the control device 200 may include at least a warning signal corresponding to the first abnormality level and an alarm signal corresponding to the second abnormality level. The temperature threshold may include at least a first temperature threshold and a second temperature threshold, with the second temperature threshold being greater than the first temperature threshold, and / or the temperature difference threshold may include at least a first temperature difference threshold and a second temperature difference threshold, with the second temperature difference threshold being greater than the first temperature difference threshold.

[0053] The control device 200 can determine whether the grinding roller 20 meets the first or second anomaly level. If at least one temperature data point exceeds a first temperature threshold, and / or the temperature difference between at least two temperature data points exceeds a first temperature difference threshold, the control device 200 determines that the grinding roller 20 is in the first anomaly level and outputs a warning signal. Alternatively, if at least one temperature data point exceeds a second temperature threshold, and / or the temperature difference between at least two temperature data points exceeds a second temperature difference threshold, the control device 200 determines that the grinding roller 20 is in the second anomaly level and outputs an alarm signal. Advantageously, the control device 200 prioritizes determining whether the grinding roller 20 meets the second anomaly level. If the grinding roller 20 does not meet the second anomaly level, the control device 200 further determines whether the grinding roller 20 meets the first anomaly level. That is, when the same set of temperature data simultaneously meets the criteria for both the first and second anomaly levels, the control device 200 processes it according to the second anomaly level, which has a higher risk level. This avoids the same grinding roller 20 being simultaneously determined to be in two different anomaly levels.

[0054] In some examples, the first temperature threshold can be in the range of 80℃ to 100℃, such as 85℃, 90℃, and 95℃; the second temperature threshold can be in the range of 100℃ to 150℃, such as 110℃, 120℃, and 130℃; the first temperature difference threshold can be in the range of 15℃ to 30℃, such as 15℃, 20℃, and 25℃; and the second temperature difference threshold can be in the range of 30℃ to 50℃, such as 35℃, 40℃, and 45℃. It should be understood that the above values ​​are merely examples, and specific thresholds can be changed as needed.

[0055] Warning signals can be used to alert operators that the grinding roller 20 has a low-risk temperature anomaly, requiring inspection or adjustment of the operating parameters of the grinding mill 1. Alarm signals can be used to alert operators that the temperature anomaly of the grinding roller 20 is high, requiring immediate shutdown or other safety measures. Warning and alarm signals can be distinguished by different text content, graphic symbols, sounds, light colors, or signal codes, etc., without specific limitations here.

[0056] Thus, by setting different abnormality levels, the control device 200 can output different warning signals according to the degree of abnormality of the temperature or axial temperature difference of the grinding roller 20, thereby making it easier for operators to distinguish the degree of abnormal risk and take corresponding measures.

[0057] In some embodiments, the control device 200 can output a corresponding control signal based on the abnormality level of the grinding roller 20. The control signal can be sent to the feeding control mechanism, the roller gap adjustment mechanism, and the suction control mechanism of the grinding mill 1, so that the corresponding mechanism performs the control operation corresponding to the abnormality level.

[0058] Specifically, in response to determining that the corresponding grinding roller 20 is in a first abnormality level, the control device 200 can output a first control signal for adjusting the grinding parameters of the grinding mill 1. The grinding parameters may include the feed rate, the distance between the two grinding rollers 20, the air intake, etc. The first control signal may include the grinding parameter to be adjusted, the adjustment direction, the adjustment amount, the target value after adjustment, etc. The control device 200 can select to adjust one or more of the above grinding parameters based on the current temperature data, temperature difference, production conditions, and the current operating parameters of the grinding mill 1; no limitation is made here.

[0059] In response to determining that the corresponding grinding roller 20 is in a second abnormality level, the control device 200 can output a second control signal to control the grinding mill 1 to stop operation. The second control signal can be sent to the grinding roller drive mechanism to stop the operation of at least the grinding mill 1 containing the corresponding grinding roller 20.

[0060] While outputting the first control signal or the second control signal, the control device 200 can output a warning signal or an alarm signal in the manner described above, so as to inform the operator of the abnormal level of the grinding roller 20 and the control measures that have been taken or need to be taken.

[0061] In this way, by taking different control measures for different levels of abnormality, when the level of abnormality risk is low, the grinding parameters can be automatically adjusted to eliminate or mitigate temperature abnormalities, thereby reducing unnecessary downtime. When the level of abnormality risk is high, the grinding mill 1 can be stopped in time to reduce the risk of equipment damage or safety accidents caused by the grinding roller 20 continuing to overheat.

[0062] Furthermore, the control device 200 can automatically determine the temperature threshold and / or temperature difference threshold based on the current production condition information and pre-stored historical operating data. The historical operating data can be pre-stored in the control device 200's memory, local database, or an external database communicatively connected to the control device 200. The historical operating data may include historical production condition information of the grinding mill 1 in multiple historical production tasks, as well as historical temperature data of multiple axial positions of the grinding roller 20 obtained by multiple temperature sensors 120 under corresponding production conditions. Here, the historical operating data can be historical normal operating data obtained when the grinding mill 1 is in a normal and stable operating state.

[0063] After the current production task begins, the control device 200 can acquire the current production status information. This information can be input by the operator of the mill 1 via an operating terminal, or automatically acquired by the control device 200 from, for example, a production task management system. The current production status information may include at least one of the following: product formula, grinding roller type, grinding stage, ambient temperature, suction status, and production load. The product formula may indicate the type, composition, and proportion of the material to be ground. The grinding roller type may indicate whether the grinding roller is a toothed roller or a smooth roller, and its corresponding specifications. The grinding stage may indicate the grinding stage the mill is in during the powder-making process. The ambient temperature can be acquired by an ambient temperature sensor located in the environment where the mill is located. This sensor can be located outside the temperature monitoring device 100, for example, on the body 10 of the mill 1 or in the surrounding environment. The suction status may be represented by the suction volume, fan operating status, or negative pressure value. The production load may be represented by the feed rate, throughput, drive motor current, or drive motor power.

[0064] The control device 200 can compare the current production condition information with the historical production condition information associated with the historical operating data, and determine the target historical operating data that matches the current production condition information from the historical operating data. When there is no historical operating data that is exactly the same as the current production condition information, the control device 200 can also calculate the similarity between the current production condition information and the historical production condition information, and determine the historical operating data with a similarity exceeding a predetermined similarity threshold (e.g., 80%) as the target historical operating data.

[0065] The target historical operating data may include temperature data from multiple historical sampling times. Assuming the temperature monitoring device 100 includes n temperature sensors 120 corresponding to n axial positions of the grinding roller 20, and the target historical operating data includes temperature data from m historical sampling times, then the i-th axial position may have m historical temperature data points. The control device 200 can determine a reference temperature for the i-th axial position based on the multiple historical temperature data points. For example, the control device 200 can determine the reference temperature as the average of the multiple historical temperature data points for the i-th axial position.

[0066] Alternatively or additionally, the control device 200 may also determine a reference temperature difference based on historical temperature data corresponding to at least two axial positions. For example, for the i-th axial position and the j-th axial position, the control device 200 may calculate the temperature difference between the two axial positions at each historical sampling time, and determine the average of the multiple historical temperature differences as the reference temperature difference. The two axial positions used to determine the reference temperature difference may be adjacent axial positions or any two axial positions.

[0067] The control device 200 can determine the temperature threshold corresponding to each axial position based on a reference temperature. Alternatively or additionally, the control device 200 can determine the corresponding temperature difference threshold based on a reference temperature difference. For example, the control device 200 can determine the temperature threshold as the sum of the reference temperature and the allowable temperature deviation, and / or can determine the temperature difference threshold as the sum of the reference temperature difference and the allowable temperature difference deviation.

[0068] In this way, by matching historical normal operation data with current production condition information and determining the corresponding temperature threshold and temperature difference threshold for different axial positions of the grinding roller, the temperature differences of different production tasks and different axial positions under normal conditions can be considered, thereby reducing the possibility of misjudgment or omission caused by using a uniform fixed threshold.

[0069] Reference Figure 7 The present invention also provides a temperature monitoring method for a grinding mill, which can be executed by the aforementioned temperature monitoring system 2.

[0070] Specifically, the temperature monitoring method includes steps S10 to S30.

[0071] Step S10: The temperature signals of multiple axial positions of the grinding roller 20 corresponding to the at least one set of temperature sensors 120 included in the at least one temperature monitoring device 100 are acquired respectively.

[0072] Step S20: Determine whether the corresponding grinding roller 20 is in an abnormal state based on multiple temperature signals.

[0073] Step S30: If the determination result of step S20 is "Y", that is, if the corresponding grinding roller 20 is in an abnormal state, a warning signal is output.

[0074] If the result of step S20 is "N", meaning that the corresponding grinding roller 20 is not in an abnormal state, return to step S10 and continue to monitor the temperature of the grinding roller.

[0075] Reference Figure 8 Step S20 includes: determining temperature data corresponding to multiple axial positions based on multiple temperature signals (sub-step S21); determining that the corresponding grinding roller is in the abnormal state when at least one of the following conditions is met (sub-step S22): at least one temperature data exceeds the corresponding temperature threshold; the temperature difference between at least two temperature data exceeds the temperature difference threshold.

[0076] In some embodiments, sub-step S22 includes: when at least one temperature data exceeds a first temperature threshold, and / or the temperature difference between at least two temperature data exceeds a first temperature difference threshold, determining that the corresponding grinding roller is in a first abnormal level and outputting a warning signal; and in response to determining that the corresponding grinding roller is in the first abnormal level, outputting a first control signal for adjusting the grinding parameters of the grinding mill; or when at least one temperature data exceeds a second temperature threshold, and / or the temperature difference between at least two temperature data exceeds the second temperature difference threshold, determining that the corresponding grinding roller is in a second abnormal level and outputting an alarm signal; and in response to determining that the corresponding grinding roller is in the second abnormal level, outputting a second control signal for controlling the grinding mill to stop operating.

[0077] Reference Figure 9Before step S10, the temperature monitoring method further includes the steps of determining a temperature threshold and a temperature difference threshold: acquiring current production condition information (step S41); determining target historical operating data that matches the current production condition information based on pre-stored historical operating data (step S42); determining reference temperatures and / or reference temperature differences between at least two axial positions corresponding to the grinding roller based on the target historical operating data (step S43); and determining temperature thresholds and / or temperature difference thresholds based on the determined reference temperatures and / or the reference temperature differences (step S44).

[0078] The specific processing methods for each of the above steps can be found in the corresponding descriptions of the aforementioned implementation method of the temperature monitoring system, and will not be repeated here.

[0079] Reference Figure 10 , Figure 10 This is a schematic diagram of an electronic device according to one embodiment of the present invention.

[0080] The present invention also provides an electronic device, such as Figure 10 As shown, the electronic device 300 may include a memory 310 and a processor 320. The memory 310 may store instructions 311, which may be executed by the processor 320. When the processor 320 executes the instructions 311, it implements the temperature monitoring method for a grinding mill according to the above embodiment.

[0081] The electronic device in this embodiment can be a laptop computer, a desktop computer, or a cloud server, etc. It is understood that the components included in the electronic device are not limited to the memory 310 and the processor 320, and can vary depending on different needs. Exemplarily, the electronic device may also include multiple components connected to its input / output interface (…). Figure 10 (Not shown in the image), including but not limited to: input units, such as keyboards and mice; output units, such as displays and speakers; storage units, such as semiconductor storage devices, magnetic surface storage devices, and optical storage devices; and communication units, such as network interface cards (NICs) and wireless transceivers. The communication unit allows the electronic device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0082] In some implementations, memory 310 may include, for example, random access memory (RAM) or read-only memory (ROM). Memory 310 may be used to store instructions, programs, code, and other programs and data required by the electronic device, but is not limited thereto. Additionally, processor 320 may be a central processing unit (CPU) or other general-purpose processors, such as digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), etc.

[0083] In an exemplary embodiment of the present invention, a computer-readable storage medium is also provided, which carries computer-readable program instructions for executing various embodiments of the present application. The computer-readable storage medium may be a tangible device capable of holding and storing instructions used by an instruction execution device. The computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital versatile optical disc (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or recessed protrusions storing instructions thereon, and any suitable combinations thereof. The computer-readable storage medium used herein is not to be interpreted as a transient signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., light pulses through fiber optic cables), or electrical signals transmitted through wires.

[0084] The present invention also proposes a computer program product tangibly stored on a computer-readable storage medium and comprising computer-executable instructions which, when executed by at least one processor, implement the temperature monitoring method for a grinding mill according to the above embodiments.

[0085] Generally, various embodiments of the present invention can be implemented in hardware, dedicated circuitry, software programs, firmware, logic circuitry, or any combination thereof, as needed. Specifically, some aspects may be implemented in hardware, while others may be implemented in firmware or software programs executable by a controller, microprocessor, or other computing device. When aspects of embodiments of the present invention are illustrated or described as block diagrams, flowcharts, or using some other graphical representation, it will be understood that the blocks, apparatuses, systems, techniques, or methods described herein can be implemented as non-limiting examples in hardware, software, firmware, dedicated circuitry, logic circuitry, general-purpose hardware, or controllers or other computing devices, or some combination thereof.

[0086] Computer-readable program instructions or computer program products for executing various embodiments of the present invention can also be stored in the cloud. When needed, users can access the computer-readable program instructions stored in the cloud for executing an embodiment of the present invention via mobile internet, fixed network or other networks, thereby implementing various embodiments of the present invention.

[0087] It should be understood that the embodiments shown in the figures only illustrate optional configurations, arrangements, or processes of the temperature monitoring device, temperature monitoring system, and temperature monitoring method according to the present invention; however, they are merely illustrative and not limiting, and other configurations may be adopted without departing from the spirit and scope of the present invention.

[0088] The technical content and features of the present invention have been disclosed above. However, it is understood that those skilled in the art can make various changes and improvements to the disclosed concepts under the inventive concept of the present invention, all of which fall within the protection scope of the present invention. The description of the above embodiments is illustrative rather than restrictive, and the protection scope of the present invention is determined by the claims.

Claims

1. A temperature monitoring device for a grinding mill, used to monitor the temperature of the grinding roller (20) of the grinding mill (1), characterized in that, The temperature monitoring device (100) includes: A housing (110) configured to extend along a first direction (D1); A plurality of temperature sensors (120) are disposed at intervals within the housing (110) along the first direction (D1); and Mounting member (130) is connected to the end of the housing (110) along a first direction (D1) to secure the housing (110) to the grinding mill (1). The temperature monitoring device (100) is configured such that, when installed on the grinding mill (1), the first direction (D1) is consistent with the axial direction (X) of the grinding roller (20), the housing (110) is spaced apart from the surface of the grinding roller (20), and the plurality of temperature sensors (120) are configured to acquire temperature signals at the plurality of axial positions of the grinding roller (20).

2. The temperature monitoring device according to claim 1, characterized in that, The housing (110) has a sidewall (113) with a plurality of detection sections (112) corresponding to the plurality of temperature sensors (120) respectively. The plurality of temperature sensors (120) are configured to receive thermal radiation emitted by the surface of the grinding roller (20) at a plurality of axial positions through the corresponding detection section (112).

3. The temperature monitoring device according to claim 2, characterized in that, When installed in the grinding mill (1), the side wall (113) of the housing (110) is positioned opposite to the surface of the grinding roller (20), and the minimum distance (d) between the side wall (113) and the surface of the grinding roller (20) is in the range of 2 mm to 15 mm.

4. The temperature monitoring device according to any one of claims 1 to 3, characterized in that, The housing (110) has an elongated configuration extending along the first direction (D1) and defines a sealed cavity (111) inside the housing (110), in which a plurality of temperature sensors (120) are housed.

5. A temperature monitoring system for a grinding mill (1), the grinding mill (1) comprising at least two grinding rollers (20) arranged side by side, characterized in that, The temperature monitoring system (2) includes: At least one temperature monitoring device (100) includes at least one set of temperature sensors (120) corresponding to at least one of the grinding rollers (20), wherein the temperature monitoring device (100) and the surface of the corresponding grinding roller (20) are spaced apart, and the at least one set of temperature sensors (120) includes a plurality of temperature sensors spaced apart along the axial direction (X) of the corresponding grinding roller (20) and configured to acquire temperature signals at a plurality of axial positions of the corresponding grinding roller (20); and A control device (200) is communicatively connected to the temperature monitoring device (100) and configured to determine whether the corresponding grinding roller (20) is in an abnormal state based on the temperature signals obtained by the multiple temperature sensors (120), and output a warning signal in response to determining that the corresponding grinding roller (20) is in an abnormal state.

6. The temperature monitoring system according to claim 5, characterized in that, The control device (200) is also configured to: Based on the multiple temperature signals, temperature data corresponding to multiple axial positions of the corresponding grinding roller (20) are determined; and The corresponding grinding roller (20) is determined to be in the abnormal state when at least one of the following conditions is met: At least one of the temperature data exceeds the corresponding temperature threshold; The temperature difference between at least two of the stated temperature data exceeds the temperature difference threshold.

7. The temperature monitoring system according to claim 6, characterized in that, The warning signal includes at least a pre-warning signal and an alarm signal; the abnormal state includes at least a first abnormality level and a second abnormality level with a risk level higher than the first abnormality level; and the temperature threshold includes at least a first temperature threshold and a second temperature threshold greater than the first temperature threshold; and / or the temperature difference threshold includes at least a first temperature difference threshold and a second temperature difference threshold greater than the first temperature difference threshold. The control device (200) is further configured to: When at least one of the temperature data exceeds the first temperature threshold, and / or the temperature difference between at least two of the temperature data exceeds the first temperature difference threshold, the corresponding grinding roller (20) is determined to be in the first abnormal level and a warning signal is output; or When at least one of the temperature data exceeds the second temperature threshold, and / or the temperature difference between at least two of the temperature data exceeds the second temperature difference threshold, the corresponding grinding roller (20) is determined to be in the second abnormal level and an alarm signal is output.

8. The temperature monitoring system according to claim 7, characterized in that, The control device (200) is also configured to: In response to determining that the corresponding grinding roller (20) is in the first abnormality level, a first control signal is output for adjusting the grinding parameters of the mill (1); or In response to determining that the corresponding grinding roller (20) is in the second abnormal level, a second control signal is output to control the grinding mill (1) to stop operating.

9. The temperature monitoring system according to claim 6, characterized in that, The control device is also configured to: Obtain current production status information; Based on pre-stored historical operating data, target historical operating data that matches the current production condition information is determined; Based on the target historical operating data, a reference temperature corresponding to multiple axial positions of the grinding roller and / or a reference temperature difference between at least two of the axial positions are determined respectively; as well as Based on the determined reference temperature and / or reference temperature difference, the temperature threshold and / or temperature difference threshold are determined respectively.

10. The temperature monitoring system according to claim 9, characterized in that, The current production condition information includes at least one of the following: product formula, grinding roller type, grinding stage, ambient temperature, suction status, and production load.

11. A method for temperature monitoring in a grinding mill, the grinding mill comprising at least two grinding rollers arranged side by side, characterized in that, The temperature monitoring method includes: Temperature signals at multiple axial positions of the grinding roller corresponding to the at least one set of temperature sensors are acquired by at least one temperature monitoring device (S10), wherein the temperature monitoring device is spaced apart from the surface of the corresponding grinding roller, and the at least one set of temperature sensors includes multiple temperature sensors spaced apart along the axial direction of the corresponding grinding roller. Based on the multiple temperature signals, determine whether the corresponding grinding roller is in an abnormal state (S20); and In response to determining that the corresponding grinding roller is in the abnormal state, a warning signal is output (S30).

12. The temperature monitoring method according to claim 11, characterized in that, The temperature monitoring method further includes: Based on the multiple temperature signals, temperature data corresponding to the multiple axial positions of the corresponding grinding rollers are determined (S21). The corresponding grinding roller is determined to be in the abnormal state (S22) when at least one of the following conditions is met: At least one of the temperature data exceeds the corresponding temperature threshold; The temperature difference between at least two of the stated temperature data exceeds the temperature difference threshold.

13. The temperature monitoring method according to claim 12, characterized in that, The warning signal includes at least a pre-warning signal and an alarm signal; the abnormal state includes at least a first abnormality level and a second abnormality level with a risk level higher than the first abnormality level; and the temperature threshold includes at least a first temperature threshold and a second temperature threshold greater than the first temperature threshold; and / or the temperature difference threshold includes at least a first temperature difference threshold and a second temperature difference threshold greater than the first temperature difference threshold. The temperature monitoring method further includes: When at least one of the temperature data exceeds the first temperature threshold, and / or the temperature difference between at least two of the temperature data exceeds the first temperature difference threshold, the corresponding grinding roller is determined to be in the first abnormal level and a warning signal is output; or When at least one of the temperature data exceeds the second temperature threshold, and / or the temperature difference between at least two of the temperature data exceeds the second temperature difference threshold, the corresponding grinding roller is determined to be in the second abnormal level and an alarm signal is output.

14. The temperature monitoring method according to claim 13, characterized in that, The temperature monitoring method further includes: In response to determining that the corresponding grinding roller is in the first abnormality level, a first control signal is output for adjusting the grinding parameters of the grinding mill; or In response to determining that the corresponding grinding roller is in the second abnormal level, a second control signal is output to control the grinding mill to stop operating.

15. The temperature monitoring method according to claim 12, characterized in that, The temperature monitoring method further includes: Obtain current production status information (S41); Based on the pre-stored historical operating data, determine the target historical operating data that matches the current production condition information (S42). Based on the target historical operating data, a reference temperature corresponding to multiple axial positions of the grinding roller and / or a reference temperature difference between at least two of the axial positions are determined (S43); and Based on the determined reference temperature and / or reference temperature difference, the temperature threshold and / or temperature difference threshold are determined respectively (S44).

16. An electronic device, characterized in that, The electronic device (300) includes a memory (310), a processor (320), and instructions (311) stored in the memory (310) and executable by the processor (320), wherein the processor (320) implements the temperature monitoring method for a grinding mill according to any one of claims 11 to 15 when executing the instructions (311).

17. A computer-readable storage medium, characterized in that, The computer-readable storage medium has computer-executable instructions stored thereon for performing the temperature monitoring method for a grinding mill according to any one of claims 11 to 15.

18. A computer program product comprising computer-executable instructions, characterized in that, When the computer-executable instructions are executed by at least one processor, they implement the temperature monitoring method for a grinding mill according to any one of claims 11 to 15.

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