Abnormality detection device and method for a liner plate

Abstract

The application relates to an abnormality detection device and method of a liner plate. The abnormality detection device of the liner plate comprises a collecting mechanism and a screening mechanism. The collecting mechanism is connected to a discharge end of an abrasive equipment and is used for collecting abrasive media discharged from the discharge end. The screening mechanism is arranged downstream of the collecting mechanism and can screen abrasive media with a size greater than a preset screening size from the abrasive media. The device can perform real-time monitoring during equipment operation of the abrasive equipment. When the liner plate is abnormally impacted or abnormally worn, the collecting mechanism can collect the abrasive media discharged from the discharge end, separate the abrasive media from materials, screen the abrasive media in size through the screening mechanism, obtain the abrasive media with a size greater than the preset screening size, and indirectly draw a conclusion that the liner plate is abnormal, thereby reducing unnecessary equipment shutdown of the abrasive equipment, reducing the safety risk of personnel entering the equipment, avoiding human errors, and reducing the requirement for personnel skills.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of abrasive equipment, in particular to an abnormality detection device and method for a liner plate. BACKGROUND

[0002] The semi-autogenous mill is the most important rotating equipment in mine machinery. The semi-autogenous mill is driven by a motor through a transmission component to rotate a cylinder. When the cylinder rotates, the abrasive medium and the material loaded in the cylinder are lifted to a certain height under the action of friction and centrifugal force, and then are thrown down at a certain linear velocity. The internal ore is continuously impacted by the falling abrasive medium and ore, and is crushed under the combined crushing and grinding action of the abrasive medium, the large ore and the liner plate in the mill. The qualified material is sent out of the cylinder with the help of the water impact.

[0003] The liner plate of the semi-autogenous mill is divided into a feed end liner plate, a cylinder liner plate and a discharge end liner plate according to the installation position. During the operation of the equipment, the thickness of the liner plate will gradually decrease under the continuous impact and wear of the ore and the abrasive medium. In particular, according to the design of the semi-autogenous mill and the influence of the feeding speed, the material gradually moves from the feed end to the discharge end after entering the semi-autogenous mill, so that the impact force on the discharge end liner plate is more obvious. Moreover, since the material needs to be quickly discharged in the semi-autogenous mill, the discharge end liner plate needs to be designed as a lattice plate structure. The impact resistance of the lattice plate is weak. When the material and the abrasive medium pass through the lattice holes, wear will occur, causing the size of the lattice holes to gradually increase, the size of the ribs at the lattice holes of the liner plate to gradually decrease, and the impact resistance to decrease. When the size of the lattice hole is large, it needs to be replaced in time. Moreover, due to improper operation of the operator during the operation of the equipment, abnormal events of speed control of the semi-autogenous mill often occur. The over-high parabolic trajectory of the material and the abrasive medium caused by the over-fast running speed will directly impact the lattice plate, so that the lattice plate is often damaged, resulting in a large amount of material and abrasive medium exceeding the standard size being discharged to the subsequent working equipment, causing the subsequent working equipment and the semi-autogenous mill to be abnormally stopped, and seriously affecting the overall production.

[0004] When detecting the wear state of the lattice hole, personnel need to enter the interior of the semi-autogenous mill for inspection after regular shutdown. Since the interior of the semi-autogenous mill is a restricted space after shutdown, a long time is needed for exhaust operation until the oxygen content is qualified before entering. Moreover, a large amount of ore pulp exists in the interior of the semi-autogenous mill during operation in order to discharge the material, so that the abrasive medium and the ore and the ore pulp may adhere to the top of the interior of the semi-autogenous mill. When personnel enter, there is a risk of falling objects causing personnel injury. Regular shutdown inspection reduces the actual operation rate of the semi-autogenous mill and reduces the overall grinding capacity, which has a greater impact on production. In addition, human errors may occur, such as insufficient skills or negligence of personnel, resulting in inaccurate measurement and misjudgment, so that the liner plate with defects is not discovered in time and is still operated. SUMMARY

[0005] Therefore, it is necessary to provide an abnormality detection device and method for a lining plate to solve the problem that the discharge end of the lining plate is easily damaged and personnel need to enter the device to detect the abnormality after the device is stopped.

[0006] The abnormality detection device for a lining plate provided by the embodiment of the first aspect of the present application comprises:

[0007] A collection mechanism connected to a discharge end of the abrasive equipment and used for collecting abrasive media discharged from the discharge end;

[0008] A screening mechanism arranged downstream of the collection mechanism and capable of screening abrasive media with a size greater than a preset screening size from the abrasive media.

[0009] In one embodiment, the screening mechanism comprises:

[0010] A frame connected to the collection mechanism;

[0011] A screening plate installed on the frame, the screening plate being provided with a plurality of material falling channels;

[0012] The preset screening size is configured as the size of the material falling channels, when the size of the abrasive media is greater than the size of the material falling channels, the abrasive media are screened onto the screening plate, and when the size of the abrasive media is equal to or smaller than the size of the material falling channels, the abrasive media are output into the material falling channels.

[0013] In one embodiment, the collection mechanism comprises a hopper installed on the frame, the hopper having a feeding port and a discharge port connected in communication, the feeding port being used for inputting the abrasive media, and the discharge port being arranged towards the screening plate.

[0014] In one embodiment, the hopper is arranged at one side of the screening plate, and the discharge port is arranged in a side wall of the hopper close to the screening plate.

[0015] A guide plate is arranged in the hopper close to the discharge port, the guide plate gradually decreasing in height in a direction towards the discharge port and being arranged in a downward inclination, and used for guiding the abrasive media in the hopper to the discharge port.

[0016] In one embodiment, the screening plate gradually decreases in height in a direction of discharge of the screening plate.

[0017] In one embodiment, the screening plate comprises a plurality of rod members arranged side by side, each of the rod members being arranged in the direction of discharge of the screening plate, the rod members being connected to the frame, and the adjacent rod members having a spacing to form the material falling channels.

[0018] In one embodiment, the screening mechanism further comprises:

[0019] a first bearing disc, which is in communication with the feeding channel, and is used to collect the abrasive medium with a size less than or equal to the preset screening size;

[0020] a second bearing disc, which is arranged on the side of the screening plate away from the discharging port, and is used to collect the abrasive medium with a size greater than the preset screening size.

[0021] In one embodiment, the collecting mechanism comprises a separating mechanism, which is arranged at the discharging end of the abrasive equipment, and separates the abrasive medium from the material, and the abrasive medium is output to the screening mechanism.

[0022] Embodiments of the second aspect of the present application provide an abnormality detection method of a liner plate, which comprises:

[0023] collecting the abrasive medium discharged from the discharging end of the abrasive equipment, and separating the abrasive medium from the material;

[0024] performing size screening on the abrasive medium;

[0025] when the size of the abrasive medium is greater than the preset screening size, determining that the liner plate is abnormal.

[0026] In one embodiment, the abnormality detection method further comprises:

[0027] recycling the abrasive medium with a size greater than the preset screening size into the abrasive equipment.

[0028] The abnormality detection device of the lining plate can monitor in real time during operation of the abrasive equipment. When the lining plate is normal and does not need to be replaced, the abrasive medium with a size greater than the preset screening size can be normally polished in the abrasive equipment. When the lining plate is abnormally impacted or abnormally worn, the aperture of the lining plate becomes large, the abrasive medium with a size greater than the preset screening size is discharged from the discharge end of the abrasive equipment, the collecting mechanism can collect the abrasive medium discharged from the discharge end, separate the abrasive medium from the material, and screen the abrasive medium through the screening mechanism. When the abrasive medium with a size greater than the preset screening size is obtained through the size screening, it can be indirectly concluded that the lining plate is abnormal. The state of the lining plate can be known in advance, the preparation for stopping and replacing the lining plate can be made, unnecessary equipment downtime of the abrasive equipment is reduced, the availability and actual availability of the abrasive equipment are ensured, the maintenance time and cost increased after temporary accidental downtime are reduced, the safety risk of personnel entering the inside of the equipment is reduced, personnel errors can be avoided, and the requirement for personnel skills is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The position of the abnormality detection device of the lining plate of the embodiment of the application and the abrasive equipment is shown.

[0030] Figure 2 The principle of the abnormality detection device of the lining plate of the embodiment of the application is shown.

[0031] Figure 3 The position of the screening mechanism and the collecting mechanism of the embodiment of the application is shown.

[0032] Figure 4 The internal structure of the hopper of the embodiment of the application is shown.

[0033] Figure 5 The structure of the screening mechanism of the embodiment of the application is shown.

[0034] Figure 6 The abnormality detection method of the lining plate of the embodiment of the application is shown.

[0035] In the drawings:

[0036] 1, collecting mechanism; 11, hopper; 111, feeding port; 112, discharge port; 113, guide plate; 12, separation mechanism;

[0037] 2, screening mechanism; 21, frame body; 22, screening plate; 221, rod; 23, material falling channel; 24, first bearing disc; 25, second bearing disc;

[0038] 3, abrasive medium;

[0039] 4, abrasive equipment;

[0040] 5. Pulverizing apparatus. DETAILED DESCRIPTION

[0041] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application can be practiced without using some or all of these specific details, and that the present application is not limited to the specific embodiments disclosed below.

[0042] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is merely intended to facilitate the description of the present application and simplify the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0043] In addition, if these terms "first", "second" appear, these terms are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0044] In the present application, unless otherwise specifically defined and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the present application, unless specifically stated and limited otherwise, if there is a description of a first feature "on" or "under" a second feature, etc., it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "on", "above" and "over" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there can be an intervening element. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used herein, if present, are used for illustrative purposes only and are not intended to be the only implementation.

[0047] The ore processing process is mainly to produce qualified products by using conventional stirring or acid leaching process. The main process includes ore crushing, grinding, stirring leaching, solid-liquid separation, ion exchange, solvent extraction, product precipitation / calcination / packaging, and the main dynamic equipment includes crushers, belts, mills, slurry pumps, vibrating screens, stirring paddles, etc. The semi-autogenous mill is the most important rotating equipment in the mine machinery. The design unit hour processing ore quantity of the semi-autogenous mill is 1875t / h, and the design adding grinding medium rate is 0.4kg / t. The size of the grinding medium is 1.5 times-2 times of the allowable discharge size of the liner. When the material and the grinding medium are smaller than the allowable discharge size of the liner, the material and the grinding medium will be discharged through the liner. The material and the grinding medium larger than the allowable discharge size of the liner will continue to be ground inside the semi-autogenous mill. Although the semi-autogenous mill can polish the material, the material is not easy to be crushed in the semi-autogenous mill. Therefore, the material needs to be further crushed after being output from the semi-autogenous mill. If the liner is often subjected to excessive impact or excessive wear and tear, it will be damaged, which will cause a large amount of material and grinding medium exceeding the standard size to be discharged to the crushing equipment, causing the crushing equipment and the semi-autogenous mill to be abnormally stopped, which seriously affects the whole production. Therefore, a regular shutdown and liner replacement strategy needs to be developed according to the service life of the liner.

[0048] Based on the above considerations, in order to solve the problem that the discharge end of the lining plate is easily damaged and needs to be detected by personnel after shutdown, the inventors have designed an abnormality detection device and method for the lining plate, which collects and size-sifts the grinding medium discharged from the discharge end of the semi-autogenous mill, and determines that the lining plate is abnormal when the size of the grinding medium is greater than the preset size, so that the lining plate can be replaced, real-time monitoring can be performed during equipment operation, unnecessary equipment shutdown of the semi-autogenous mill is reduced, the safety risk of personnel entering the equipment is reduced, human errors can be avoided, and the requirement for personnel skills is reduced.

[0049] Referring to Figures 1-2 The abnormality detection device for the lining plate provided by the embodiments of the present application includes a collecting mechanism 1 and a size-sifting mechanism 2. The collecting mechanism 1 is connected to the discharge end of the grinding equipment 4 and is used to collect the grinding medium 3 discharged from the discharge end, so as to uniformly convey the grinding medium 3 to the size-sifting mechanism 2 for size-sifting. The size-sifting mechanism 2 is arranged downstream of the collecting mechanism 1 and can size-sift the grinding medium 3 with a size greater than a preset size from the grinding medium 3. In this way, the abnormality detection device of the present embodiment can perform real-time monitoring during equipment operation of the grinding equipment 4. When the lining plate is normal and does not need to be replaced, the grinding medium 3 with a size greater than the preset size will be normally ground in the grinding equipment 4. If the lining plate is abnormally impacted or abnormally worn, the pore size of the lining plate will be increased, and the grinding medium 3 with a size greater than the preset size will be discharged from the discharge end of the grinding equipment 4. The collecting mechanism 1 collects the grinding medium 3 discharged from the discharge end and then conveys the grinding medium 3 to the size-sifting mechanism 2. When the size-sifting mechanism 2 size-sifts the grinding medium 3 with a size greater than the preset size, it is determined that the lining plate is abnormal, and it is indirectly concluded that the lining plate is abnormal. The lining plate state can be known in advance, the preparation for stopping and replacing the lining plate can be made, unnecessary equipment shutdown of the grinding equipment 4 is reduced, the maintenance time and cost increased after temporary accidental shutdown are reduced, the safety risk of personnel entering the equipment is reduced, human errors can be avoided, and the requirement for personnel skills is reduced.

[0050] Referring to Figures 2-3 In some embodiments, the size-sifting mechanism 2 includes a frame 21 and a size-sifting plate 22. The frame 21 is connected to the collecting mechanism 1, so as to accurately convey the grinding medium 3 and make the grinding medium 3 smoothly fall on the size-sifting plate 22. The size-sifting plate 22 is installed on the frame 21 and is provided with a plurality of falling channels 23. The preset size is configured as the size of the falling channels 23, that is, the preset size can be adjusted by adjusting the inner hole size of the falling channels 23, so as to adjust the replacement standard of the lining plate.

[0051] When the size of the abrasive medium 3 is greater than the size of the material falling channel 23, the abrasive medium 3 is screened on the screening plate 22, that is, when the screening plate 22 identifies that there is abrasive medium 3 greater than the size of the material falling channel 23, it can be determined that the liner plate state is abnormal, the operation is simple, and the observation is more intuitive. When the size of the abrasive medium 3 is equal to or less than the size of the material falling channel 23, the abrasive medium 3 enters the material falling channel 23 to output, so as to separate the abrasive medium 3 with a size equal to or less than the preset screening size from the abrasive medium 3 with a size greater than the preset screening size, which is beneficial to recycling the abrasive medium 3 with a size greater than the preset screening size after replacing the liner plate and feeding it into the abrasive equipment 4 for reuse, thereby reducing the equipment operation cost.

[0052] In the embodiment, the frame body 21 can be arranged below the collecting mechanism 1, the discharging position of the collecting mechanism 1 can be arranged at the side or the lower part of the collecting mechanism 1, the screening plate 22 is arranged close to the discharging position of the collecting mechanism 1, and the plurality of material falling channels 23 are all communicated with the discharging position of the collecting mechanism 1. The shape of the material falling channel 23 can be selected according to the screening requirement, and the material falling channel 23 can be but is not limited to a round hole or a polygonal hole.

[0053] Referring to Figures 2-3 In some embodiments, the collecting mechanism 1 comprises a hopper 11, the hopper 11 is installed on the frame body 21, the hopper 11 has a feeding port 111 and a discharging port 112 communicated with each other, the feeding port 111 is used for inputting the abrasive medium 3, and the discharging port 112 is arranged towards the screening plate 22. In this way, the abrasive medium 3 can enter the hopper 11 for collection through the feeding port 111 and then be output to the screening plate 22 through the discharging port 112, so that the impact of the abrasive medium 3 falling on the screening plate 22 can be reduced, the screening operation error can be reduced, and the hopper 11 can also play a transition and blocking role in the conveying of the abrasive medium 3, so that the abrasive medium 3 can be prevented from scattering and falling off.

[0054] In the embodiment, the hopper 11 can be designed as an open structure with outwardly expanding feeding, and the size of the feeding port 111 is greater than the size of the discharging port 112, so as to facilitate the input of the abrasive medium 3.

[0055] Referring to Figures 1-2 In some embodiments, the collecting mechanism 1 further comprises a separation mechanism 12, the separation mechanism 12 is arranged at the discharging end of the abrasive equipment 4, the separation mechanism 12 separates the abrasive medium 3 from the material, so that the abrasive medium 3 is output to the screening mechanism 2, and the material is conveyed to the crushing equipment 5 for further crushing operation or is conveyed to a storage space for storage. In this way, after the abrasive medium 3 is discharged from the discharging end of the abrasive equipment 4 together with the material, the abrasive medium 3 can be separated from the material in the separation mechanism 12, so that the interference of the material on the screening operation of the abrasive medium 3 can be avoided, and the size screening accuracy of the abrasive medium 3 can be improved.

[0056] In the present embodiment, the separating mechanism 12 can be, but is not limited to, a tramp iron remover or a magnetic separator.

[0057] Referring to Figures 3-4 In some embodiments, the hopper 11 is arranged at one side of the screening plate 22, and the discharge opening 112 is arranged on the side wall of the hopper 11 close to the screening plate 22, so that the abrasive medium 3 can be output from the discharge opening 112 on the side wall of the hopper 11 to the screening plate 22 after falling into the hopper 11, which can reduce the impact of the abrasive medium 3 falling on the screening plate 22. The hopper 11 is provided with a guide plate 113 arranged close to the discharge opening 112. The height of the guide plate 113 gradually decreases in the direction towards the discharge opening 112, and the guide plate 113 is arranged in a downward inclination, so that the guide plate 113 can apply a pushing force to the abrasive medium 3 to move close to the discharge opening 112, i.e. the height of the guide plate 113 gradually decreases from one end away from the discharge opening 112 to one end close to the discharge opening 112, forming an inclined plate structure gradually moving close to the discharge opening 112, which can guide the abrasive medium 3 in the hopper 11 to the discharge opening 112. In this way, the guide plate 113 can more smoothly guide the abrasive medium 3 in the hopper 11 to the screening plate 22, reduce the detection error caused by the residence of the abrasive medium 3 in the hopper 11, and improve the accuracy of the abnormality detection and judgment.

[0058] In some embodiments, the height of the screening plate 22 gradually decreases in the direction of its discharge, so that the screening plate 22 can apply a pushing force to the abrasive medium 3 to move away from the discharge opening 112 after the abrasive medium 3 is output from the discharge opening 112 to the screening plate 22, for example, the screening plate 22 can be arranged in a downward inclination away from the hopper 11. In this way, the screening plate 22 can guide and transport the abrasive medium 3 output from the discharge opening 112, reduce the residence of the abrasive medium 3 close to the discharge opening 112, and make the abrasive medium 3 move a certain distance under the guidance of the screening plate 22 after being transported to the screening plate 22, so that the abrasive medium 3 can be more dispersed on the screening plate 22, and the accumulation of the abrasive medium 3 can be reduced.

[0059] In the present embodiment, the angle between the screening plate 22 and the horizontal direction and the angle between the guide plate 13 and the horizontal direction can be equal, or the angle between the screening plate 22 and the horizontal direction can be smaller than the angle between the guide plate 13 and the horizontal direction. The angle between the screening plate 22 and the horizontal direction can be set according to the screening requirement, which can ensure that the abrasive medium 3 has enough time to be screened before reaching the end of the screening plate 22 away from the discharge opening 112.

[0060] In other optional embodiments, the screening plate 22 can also be arranged horizontally.

[0061] Referring to Figures 4-5In some embodiments, the screening plate 22 comprises a plurality of parallel arranged rods 221, each rod 221 is arranged along the discharging direction of the screening plate 22, the rods 221 are connected with the frame 21, the frame 21 can support each rod 221, and the adjacent rods 221 have a spacing to form a discharging channel 23. In this way, after the abrasive medium 3 is discharged from the discharge port 112, it can be located between the adjacent rods 221. The abrasive medium 3 with a size greater than the preset screening size can be smoothly rolled and conveyed along the length direction of the rod 221. The abrasive medium 3 with a size less than or equal to the preset screening size can be smoothly discharged into the discharging channel 23 between the adjacent rods 221 after being discharged from the discharge port 112, reducing the blockage in the discharging direction of the abrasive medium 3, making the conveying and discharging more smooth, reducing the residence of the abrasive medium 3 with a size less than or equal to the preset screening size on the screening plate 22, and making the screening operation more smooth and accurate.

[0062] Referring to Figures 2-3 In some embodiments, the screening mechanism 2 further comprises a first bearing disc 24, which is connected with the discharging channel 23 and used to collect the abrasive medium 3 with a size less than or equal to the preset screening size, so as to facilitate centralized processing of the abrasive medium 3 and avoid scattering. For example, the first bearing disc 24 can be located below the screening plate 22, and the abrasive medium 3 can fall onto the first bearing disc 24 after passing through the discharging channel 23. The first bearing disc 24 can be connected with the screening plate 22 at one end and with the frame 21 at the other end to form a triangular structure, i.e., the first bearing disc 24, the screening plate 22 and the frame 21 can support each other, and the structure is stable. The first bearing disc 24 can be arranged in a horizontal direction to facilitate placement on the ground.

[0063] Referring to Figures 2-3 In some embodiments, the screening mechanism 2 further comprises a second bearing disc 25, which is arranged downstream of the discharging direction of the screening plate 22, i.e., the second bearing disc 25 is located on the side of the screening plate 22 away from the hopper 11, and is used to collect the abrasive medium 3 with a size greater than the preset screening size, so as to facilitate centralized storage of the abrasive medium 3 and reduce scattering and facilitate recycling.

[0064] The second bearing disc 25 can be independently arranged on the side of the screening plate 22 away from the hopper 11, and can be input by the abrasive medium 3 on the screening plate 22. Alternatively, the second bearing disc 25 can be detachably connected with the screening plate 22 or the frame 21, i.e., it is convenient to fix and reduce displacement, and can also be disassembled and assembled as needed.

[0065] In some embodiments, the abnormality detection device of the lining plate can further comprise an alarm mechanism, which can be connected with the screening mechanism 2. For example, the alarm mechanism can be arranged at one end of the screening plate 22 away from the hopper 11. Specifically, the alarm mechanism can comprise an alarm and a trigger in communication. When the screening mechanism 2 screens out abrasive media 3 with a size greater than the preset screening size, the trigger generates an alarm signal to the alarm, and the alarm alarms, which can improve the warning effect. The trigger can be, but is not limited to, an infrared sensor, a travel switch, or a radar, or the trigger can be configured as a visual detection system, which can identify the abrasive media 3 when the screening mechanism 2 screens out abrasive media 3 with a size greater than the preset screening size. The alarm of the alarm can be, but is not limited to, an audible and visual alarm.

[0066] In the present embodiment, the trigger can also be in communication with the control system of the abrasive equipment 4. When the trigger generates an alarm signal, the alarm signal can also be transmitted to the control system of the abrasive equipment 4. The control system of the abrasive equipment 4 can adjust the abrasive equipment 4 to stop or reduce the operating speed, which is more automated.

[0067] Referring to Figure 1 and Figure 6 An embodiment of the present application provides an abnormality detection method of a lining plate, comprising the following steps:

[0068] S200, collecting the abrasive media 3 discharged from the discharge end of the abrasive equipment 4, and separating the abrasive media 3 from the material to avoid the mixing of the material and the abrasive media 3, which can interfere with the screening operation of the abrasive media 3, improve the size screening accuracy of the abrasive media 3, and reduce the misjudgment of the abnormal state of the lining plate.

[0069] S300, size screening of the abrasive media 3;

[0070] S400, when the size of the abrasive media 3 is greater than the preset screening size, it is determined that the lining plate is in an abnormal state, wherein the preset screening size is the screening standard of the abrasive media 3. The abrasive media 3 with a size greater than the preset screening size is screened out for special identification, and the abrasive media 3 with a size less than or equal to the preset screening size is not screened out.

[0071] In this way, the embodiment can be monitored in real time during the operation of the abrasive device 4. When the liner is normal and does not need to be replaced, the abrasive medium 3 with a size greater than the preset screening size will be normally polished in the abrasive device 4. When the liner is abnormally impacted or abnormally worn, the aperture of the liner becomes larger, and the abrasive medium 3 with a size greater than the preset screening size will be discharged from the discharge end of the abrasive device 4. By screening the abrasive medium 3 by size, when the abrasive medium 3 with a size greater than the preset screening size is obtained by size screening, it can be indirectly concluded that the liner state is abnormal. The liner state can be known in advance, and the liner can be replaced in advance to reduce unnecessary downtime of the abrasive device 4, ensure the availability and actual availability of the abrasive device 4, reduce the maintenance time and cost increased after temporary unexpected downtime, and reduce the safety risk of personnel entering the inside of the device. It can also avoid human errors and reduce the requirement for personnel skills, and solve the problem that the discharge end of the liner is easily damaged and needs to be detected by personnel after downtime.

[0072] In the embodiment, the abrasive device 4 can be but is not limited to a semi-autogenous mill. The screening method for screening the abrasive medium 3 by size can be but is not limited to physical filtration by a screening plate 22 or shooting recognition by a visual detection system. Of course, the abrasive medium 3 can also be screened and recognized by multiple screening methods such as the screening plate 22 and the visual detection system to improve the accuracy of the abnormality determination structure. It should be noted that the abrasive medium 3 is an implementation body of crushing force, and the abrasive medium 3 is mostly a cast or forged piece with similar shapes and wear resistance. If the liner is normal, the probability of the abrasive medium 3 with a size greater than the preset screening size being discharged from the discharge end is low. Compared with collecting materials, the abrasive medium 3 is mainly collected and screened in the embodiment, which can improve the accuracy of abnormal detection of the liner.

[0073] The separation method of the material and the abrasive medium 3 can be selected according to the material or mass difference between the abrasive medium 3 and the material. The separation method can be but is not limited to magnetic separation. For example, the material of the abrasive medium 3 can be a magnetic material, and the abrasive medium 3 can be separated from the material by magnetic separation to facilitate the collection of the abrasive medium 3.

[0074] In some embodiments, the preset screening size is greater than or equal to the preset discharge size of the liner. The preset discharge size is the size of the material or abrasive medium 3 allowed to be discharged when the liner is in a normal state. The preset screening size needs to be greater than or equal to the preset discharge size to reduce the interference of the abrasive medium 3 discharged in the normal state on the size screening operation and reduce the error in the judgment of the abnormal state of the liner.

[0075] In some embodiments, the ratio of the preset screening size to the preset discharge size is in the range of 1.2-1.4, that is, when the abrasive medium 3 is discharged and the liner is slightly worn within a certain range, the abrasive medium 3 will not be screened out for special identification, allowing the liner to be used in a slightly worn state, reducing unnecessary replacement of the liner, and saving use costs.

[0076] For example, taking the preset discharge size of the liner as 70 mm as an example, the preset screening size can be selected as 90 mm. When the abrasive medium 3 with a size greater than 90 mm is identified by size screening, it is determined that the liner state is abnormal. When the discharge size of the liner is within 70 mm-90 mm, the liner can be used, which can meet the grinding requirements of the material, and can also reduce the downtime replacement of the liner, saving use costs.

[0077] In some embodiments, the abnormality detection method further comprises recycling the abrasive medium 3 with a size greater than the preset screening size into the abrasive equipment 4 after replacing the liner, that is, the screened abrasive medium 3 can prompt the liner state to be abnormal, and after the liner is replaced, the screened abrasive medium 3 can also be put back into the abrasive equipment 4 to continue grinding the material, so that the abrasive medium 3 can be reused, reducing the equipment operation cost.

[0078] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0079] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. An anomaly detection device for a liner plate, characterized in that, include: A collection mechanism (1) is used to collect the abrasive medium (3) discharged from the discharge end of the abrasive equipment. The collection mechanism (1) includes a hopper (11) and a separation mechanism (12). The separation mechanism (12) is located at the discharge end and separates the abrasive medium (3) from the material. The hopper (11) has a connected inlet (111) and outlet (112). The inlet (111) is used to input the abrasive medium (3). A screening mechanism (2), located downstream of the collecting mechanism (1), is used to screen abrasive media (3) whose size is larger than a preset screening size. The screening mechanism (2) includes a frame (21), a screening plate (22), a first bearing plate (24), and a second bearing plate (25). The frame (21) is connected to the collecting mechanism (1). The screening plate (22) is mounted on the frame (21) and has multiple material discharge channels (23). The preset screening size is configured as follows: The dimensions of the discharge channel (23); the first bearing plate (24) is connected to the discharge channel (23) and is used to collect the abrasive media (3) with a size less than or equal to the preset screening size; the second bearing plate (25) is located downstream of the discharge direction of the screening plate (22) and is used to collect the abrasive media (3) with a size greater than the preset screening size; the hopper (11) is installed on the frame (21) and the discharge port (112) is set towards the screening plate (22); The alarm mechanism includes an alarm and a trigger connected by communication. When the screening mechanism (2) screens out abrasive media (3) with a size larger than the preset screening size, the trigger generates an alarm signal, and the alarm can receive the alarm signal and trigger an alarm.

2. The anomaly detection device for the liner plate according to claim 1, characterized in that, The size of the feed inlet (111) of the hopper (11) is larger than the size of the discharge outlet (112).

3. The anomaly detection device for the liner plate according to claim 1, characterized in that, The material feeding channel (23) is a round hole or a polygonal hole.

4. The anomaly detection device for the liner plate according to claim 1, characterized in that, The hopper (11) is disposed on one side of the screening plate (22), and the discharge port (112) is opened on the side wall of the hopper (11) near the screening plate (22); A guide plate (113) is provided inside the hopper (11) near the discharge port (112). The guide plate (113) gradually decreases in height in the direction toward the discharge port (112) and is inclined downwards to guide the abrasive medium (3) in the hopper (11) to the discharge port (112).

5. The anomaly detection device for the liner plate according to claim 1, characterized in that, The height of the screening plate (22) gradually decreases along its own discharge direction.

6. The anomaly detection device for the liner plate according to claim 1, characterized in that, The screening plate (22) includes a plurality of parallel rods (221), each rod (221) is arranged along the discharge direction of the screening plate (22), the rod (221) is connected to the frame (21), and there is a gap between adjacent rods (221) to form the discharge channel (23).

7. The anomaly detection device for the liner plate according to claim 1, characterized in that, The screening plate (22) is set horizontally.

8. The anomaly detection device for the liner plate according to any one of claims 1 to 7, characterized in that, The separation mechanism is an iron remover or a magnetic separator.

9. A method for detecting anomalies in a liner, characterized in that, Based on the anomaly detection device for the liner as described in claim 8, the anomaly detection method includes: The abrasive media (3) discharged from the outlet of the abrasive equipment is collected, and the abrasive media (3) is separated from the material by magnetic separation; The abrasive media (3) is sized and screened. When the size of the abrasive medium (3) is larger than the preset screening size, the alarm mechanism will sound an alarm, and the condition of the liner plate will be determined to be abnormal.

10. The method for detecting anomalies in a liner according to claim 9, characterized in that, The anomaly detection method further includes: After replacing the liner, the abrasive media (3) with a size larger than the preset screening size is recycled back into the abrasive equipment.

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