Large ball mill with easy detection of the liner

Abstract

The present application relates to the technical field of ball mill, in particular to a large ball mill convenient for detecting lining plate, the inner circumferential wall of front and rear cylinder bodies of the cylinder body is fixed with lining plate, the middle disc body includes outer ring body fixed between the front and rear cylinder bodies, inner ring body and support rod fixed between the inner and outer ring bodies, a plurality of fan-shaped sieve plates fixed to the front wall of the support rod are spliced into annular sieve surface, the bottom of the balance body rotatably sleeved in the inner ring body is solid and the top is provided with a placement cavity, the support member includes a circular plate fixed to the front and rear ends of the balance body and a strip-shaped shell fixed to the bottom of the circular plate, the surface detection module is uniformly nested in the top of the support cylinder in the axial direction, the electric push rod telescopic rod sleeved in the inner cavity of one end of the support cylinder is fixed to the top end of the strip-shaped shell, and the control system in the control assembly in the placement cavity is used for detecting, storing the data of the balance body swing angle, the support cylinder axial stroke, the surface detection module and power supply. It is convenient to efficiently check the lining plate in the large ball mill.

Description

Technical Field

[0001] This invention relates to the field of ball mill technology, specifically to a large ball mill that facilitates the inspection of liners. Background Technology

[0002] Ball mills are key equipment for pulverizing materials after pre-crushing. They are widely used in the production of cement, silicate products, new building materials, refractory materials, fertilizers, ferrous and non-ferrous metal ore beneficiation, and glass ceramics. They are used for dry or wet grinding of various ores and other grindable materials. Ball mills are suitable for grinding various ores and other materials and are widely used in mineral processing, building materials and chemical industries.

[0003] A ball mill consists of a horizontal cylinder, hollow inlet and outlet shafts, liners fixed to the inner wall of the cylinder, and several grinding media. The grinding media are generally steel spheres, loaded into the cylinder in different diameters and proportions. Steel segments can also be used, selected according to the particle size of the material being ground. During operation, the material is fed evenly into the cylinder through the inlet hollow shaft via the feeding device. As the cylinder rotates, the grinding media, due to inertia, centrifugal force, and friction, adhere to the cylinder liners and are carried away by the cylinder. When carried to a certain height, they are thrown back down due to their own gravity, and the falling grinding media, like projectiles, crush the material inside the cylinder.

[0004] Due to the prolonged operation of ball mills, the material and grinding media continuously impact the liners, easily causing damage and deformation to the liner surface. To ensure the performance of the ball mill, it is necessary to regularly inspect the liners and promptly replace severely damaged or deformed liners. However, for large ball mills, this liner inspection work generally requires personnel to enter the mill, which is difficult and inefficient. Summary of the Invention

[0005] The purpose of this invention is to provide a large ball mill that facilitates the inspection of the liner plates, thereby solving the problem of the difficulty in efficiently inspecting the inner liner plates of large ball mills in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large ball mill for easy inspection of liners, wherein the cylinder includes a front cylinder and a rear cylinder, and multiple sets of liners are fixed axially on the inner peripheral walls of the front and rear cylinders, with each set of liners arranged circumferentially; the intermediate disc includes an outer ring fixed between the front and rear cylinders, an inner ring concentrically disposed within the outer ring, and multiple support rods radially fixed between the inner and outer rings; multiple fan-shaped screen plates fixed to the front walls of the support rods are spliced ​​to form an annular screen surface; a balance body is rotatably fitted within the inner ring; the bottom of the balance body is solid, and the top of the balance body has a mounting cavity; the support member includes a circular support fixed to the front and rear ends of the balance body. The system includes a plate and a strip-shaped shell with its bottom end fixed to the circular plate and extending upward. The support cylinder extends axially along the cylinder body. Multiple surface detection modules are evenly nested axially at the top of the support cylinder, and the spacing between the surface detection modules is equal to the axial length of the liner plate. An electric push rod is fitted into the inner cavity at one end of the support cylinder. The telescopic end of the electric push rod is vertically fixed to the top of the strip-shaped shell. The maximum stroke of the electric push rod during periodic extension and retraction is equal to the axial length of the liner plate. The control component is located in the mounting cavity. The control system integrated in the control component is used to detect and store the swing angle data of the balance body, detect and store the axial stroke data of the support cylinder, store the detection data of the surface detection modules, and provide power.

[0007] Preferably, the outer edges of the front and rear ends of the outer ring are respectively stitched to the rear end of the front cylinder and the front end of the rear cylinder by axially extending bolts. The middle part of the outer peripheral wall of the inner ring is provided with an annular protrusion, and the inner end of the support rod is uniformly fixed to the outer peripheral wall of the annular protrusion along the circumferential direction.

[0008] Preferably, it also includes a fixing component, which includes a strip fixed to the front wall of the support rod and a plurality of locking blocks provided on both sides of the center of the front wall of the strip. The rear wall of the fan-shaped screen plate is provided with locking grooves that match the locking blocks near the two side edges. The fan-shaped screen plate is made of polyurethane.

[0009] Preferably, a plurality of screws are vertically fixed to the center of the rear wall of the slat, and the screws are threaded through the rear wall of the support rod and fitted with a clamping nut.

[0010] Preferably, the balancing body includes a column rotatably fitted inside the inner ring body and slewing bearings fitted at both ends of the column. The outer ring of the slewing bearing is fixed to the outer edge of the front and rear ends of the inner ring body. The circular plate is fixed to the inner ring of the slewing bearing. The bottom of the column is solid. The mounting cavity is located at the top of the column.

[0011] Preferably, the top of the support cylinder is provided with a plurality of sleeves evenly distributed along the axial direction, and the surface detection module is fixedly fitted inside the sleeves.

[0012] Preferably, the control component integrates a tilt detection module for detecting the deflection angle of the top surface of the solid part.

[0013] Preferably, the support cylinder is equipped with an axial travel measurement module for detecting the extension and retraction stroke of the electric push rod.

[0014] Preferably, the control component integrates a central control module, which is electrically connected to a data storage module and a power supply module. The output of the central control module is electrically connected to a telescopic control module, which is used to control the start and stop of the electric push rod. The outputs of the tilt detection module and the axial forming measurement module are electrically connected to the input of the central control module.

[0015] Preferably, the column is made of stainless steel, and the strip-shaped shell and the support cylinder are made of carbon fiber composite material.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The present invention relates to a large ball mill for easy inspection of liners. Because the bottom of the balance body is solid, it does not rotate with the cylinder. This allows the support member to hold the support cylinder at the top of the cylinder's inner cavity, facilitating the surface inspection module's inspection of the liner surface as it rotates with the cylinder. Simultaneously with liner surface inspection, the control system acquires the overall swing angle of the balance body, support member, and support cylinder, as well as the axial travel of the support cylinder. This facilitates precise positioning of detected damaged liners, significantly improving the efficiency of liner inspection. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the entire invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the intermediate disk body of the present invention;

[0020] Figure 3 This is a three-dimensional structural diagram of the fan-shaped sieve plate of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the fastener of the present invention;

[0022] Figure 5 This is a three-dimensional structural diagram of the balance body of the present invention;

[0023] Figure 6 This is a three-dimensional structural diagram of the support member of the present invention;

[0024] Figure 7 This is a three-dimensional structural diagram of the support cylinder of the present invention;

[0025] Figure 8 For the present invention Figure 1 Enlarged structural diagram at point A;

[0026] Figure 9 This is a schematic diagram of the control system of the present invention.

[0027] In the diagram: 1-Cylinder body; 1.1-Front cylinder body; 1.2-Rear cylinder body;

[0028] 2-Intermediate disc; 2.1-Outer ring; 2.2-Inner ring; 2.3-Annular protrusion; 2.4-Support rod;

[0029] 3-Fan-shaped sieve plate; 3.1-Slot;

[0030] 4-Factor; 4.1-Strip; 4.2-Clamping block; 4.3-Screw; 4.4-Pressure nut;

[0031] 5-Balancing body; 5.1-Column; 5.1.1-Solid part; 5.1.2-Housing cavity; 5.2-Slewing bearing;

[0032] 6-Supporting component; 6.1-Circular plate; 6.2-Strip-shaped shell;

[0033] 7-Electric linear actuator;

[0034] 8-Support cylinder; 8.1-Sleeve;

[0035] 9-Surface inspection module;

[0036] 10-Control components; 10.1-Central control module; 10.2-Axial travel measurement module; 10.3-Tilt angle detection module; 10.4-Data storage module; 10.5-Telescopic control module; 10.6-Power supply module. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Please see Figure 1-9The present invention provides a technical solution for a large ball mill that facilitates the inspection of liners. The cylinder 1 includes a front cylinder 1.1 and a rear cylinder 1.2. The inner circumferential walls of the front cylinder 1.1 and the rear cylinder 1.2 are respectively fixed with multiple sets of liners along the axial direction, and the liners in each set are arranged circumferentially.

[0039] The intermediate disc 2 includes an outer ring 2.1 fixed between the front cylinder 1.1 and the rear cylinder 1.2, an inner ring 2.2 concentrically located within the outer ring 2.1, an annular protrusion 2.3 located in the middle of the outer peripheral wall of the inner ring 2.2, and multiple support rods 2.4 radially fixed between the annular protrusion 2.3 and the outer ring 2.1. The outer edges of the front and rear ends of the outer ring 2.1 are respectively sewn to the rear end of the front cylinder 1.1 and the front end of the rear cylinder 1.2 by axially extending bolts. The inner ends of the support rods 2.4 are uniformly fixed circumferentially to the outer peripheral wall of the annular protrusion 2.3. When the overall diameter of the cylinder 1 is too large, multiple annular connecting rods are added between the inner ring 2.2 and the outer ring 2.1 to reinforce the support rods 2.4, thereby enhancing their support strength.

[0040] Multiple fan-shaped screen plates 3 fixed to the front wall of the support rod 2.4 are spliced ​​together to form an annular screen surface surrounding the inner ring body 2.2.

[0041] The fastener 4 includes a strip 4.1 fixed to the front wall of the support rod 2.4 and multiple locking blocks 4.2 located on both sides of the center of the front wall of the strip 4.1. The rear wall of the fan-shaped screen plate 3 has locking grooves 3.1 near the two side edges that engage with the locking blocks 4.2. The fan-shaped screen plate 3 is made of polyurethane. Multiple screws 4.3 are vertically fixed to the center of the rear wall of the fastener 4.1. The screws 4.3 penetrate the rear wall of the support rod 2.4 and are threaded with compression nuts 4.4.

[0042] The balancing body 5 includes a column 5.1 rotatably fitted inside the inner ring body 2.2 and slewing bearings 5.2 fitted at both ends of the column 5.1. The outer ring of the slewing bearing 5.2 is fixed to the outer edge of the front and rear ends of the inner ring body 2.2. The bottom of the column 5.1 is a solid part 5.1.1, and the mounting cavity 5.1.2 is located at the top of the column 5.1.

[0043] The support member 6 includes a circular plate 6.1 and a strip-shaped shell 6.2 whose bottom end is fixed to the circular plate 6.1 and extends upward. The circular plate 6.1 is fixed to the inner ring of the slewing bearing 5.2. That is, when the intermediate disk 2 rotates with the cylinder 1, since the weight of the bottom of the balance body 5 is much greater than the weight of its upper part, the balance body 5 will not rotate with the intermediate disk 2, thus ensuring that the strip-shaped shell 6.2 is always in an upright state or a slightly deflected state. Furthermore, the column 5.1 can be made of stainless steel, and the strip-shaped shell 6.2 and the support cylinder 8 can be made of carbon fiber composite material.

[0044] The support cylinder 8 extends axially along the cylinder body 1, and multiple sleeves 8.1 are evenly provided on the top of the support cylinder 8 along the axial direction. The surface detection module 9 is fixedly fitted inside the sleeve 8.1. The spacing between the surface detection modules 9 is equal to the axial length of the liner plate.

[0045] An electric push rod 7 is fitted into the inner cavity of one end of the support cylinder 8. The telescopic end of the electric push rod 7 is vertically fixed to the top of the strip-shaped housing 6.2. The maximum stroke of the electric push rod 7 during periodic extension and retraction is equal to the axial length of the liner. Under the axial extension and retraction of the electric push rod 7, the support cylinder 8 drives multiple surface detection modules 9 to reciprocate along the axial direction. The axial movement range of the surface detection modules 9 corresponds precisely to each group of liners arranged circumferentially and fixed to the inner wall of the cylinder 1. That is, each surface detection module 9 is used to detect the surface damage of the corresponding group of liners. Among them, the surface detection module 9 adopts a photoelectric distance sensing mode. The distance at the detection point will generate a curve, which is used to represent the change of detection distance over time. When a broken area appears, the corresponding detection distance will fluctuate.

[0046] The control component 10 is located within the mounting cavity 5.1.2. The integrated control system within the control component 10 is used to detect and store the swing angle data of the balance body 5, detect and store the axial travel data of the support cylinder 8, store the detection data of the surface detection module 9, and provide power. Specifically, the control component 10 integrates a tilt angle detection module 10.3 for detecting the deflection angle of the top surface of the solid part 5.1.1. The support cylinder 8 is equipped with an axial travel measurement module 10.2 for detecting the extension and retraction travel of the electric push rod 7. The data detected by the travel measurement module 10.2 generates a curve showing the axial position change of the support cylinder 8 over time. The data detected by the tilt angle detection module 10.3 generates a curve showing the swing angle change of the balance body 5 over time.

[0047] The control component 10 integrates a central control module 10.1. The central control module 10.1 is electrically connected to a data storage module 10.4 and a power supply module 10.6. The output of the central control module 10.1 is electrically connected to a telescopic control module 10.5. The telescopic control module 10.5 is used to control the start and stop of the electric push rod 7. The outputs of the tilt angle detection module 10.3 and the axial formation measurement module 10.2 are electrically connected to the input of the central control module 10.1.

[0048] In summary, during the operation of cylinder 1, the support cylinder 8 will always remain near the top of the inner cavity of cylinder 1. The grinding media and materials, as they are lifted and thrown down with the liners, will not reach the height of the support cylinder 8, thus preventing damage to the surface detection module 9 on the support cylinder 8. The surface detection module 9 only detects the liners that have rotated to the top. That is, the surface detection module 9, which reciprocates axially under the extension and retraction of the electric push rod 7, detects the corresponding set of liners. During the initial trial operation after equipment assembly, a set of detection data from the surface detection module 9 is collected as target data to generate a standard curve model. Subsequently, during later operation, the collected data is compared with the target data. When a significant shift occurs, it is marked as a fault point, and the fault time is recorded. In the detection data of the axial stroke measurement module 10.2, the axial movement position of the support cylinder 8 corresponding to the fault time point is locked, thus determining the axial position of the corresponding set of liners. At this time, the locked fault point is a ring-shaped area, meaning that it is determined that the corresponding point of all liners in the group may be a fault point.

[0049] Then, by locking the rotation position of the cylinder 1 according to the time point, the fault time point can be locked and rotated to the position corresponding to the surface detection module 9, thereby achieving the purpose of locating the fault point.

[0050] However, during the actual operation of the cylinder 1, the balance body 5 may oscillate slightly, that is, the surface detection module 9 will move in the circumferential direction. At this time, it is necessary to refer to the oscillation angle of the balance body 5 corresponding to the fault time point. This oscillation angle is used to correct the location of the fault point, thereby achieving the effect of accurately locating the fault point.

[0051] The data storage module 10.4 is a removable storage device, meaning it can be periodically removed and connected to a computer for data reading and data analysis, curve generation, and other operations using a client. The power module 10.6 is a rechargeable battery that can be periodically removed for recharging.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A large ball mill with ease of detection of the liner characterized in that, It includes: The barrel (1) includes a front barrel (1.1) and a rear barrel (1.2), and the inner circumferential walls of the front barrel (1.1) and the rear barrel (1.2) are respectively fixed with a plurality of groups of lining plates along the axial direction, and the lining plates in each group are arranged along the circumferential direction respectively; The intermediate disc body (2) includes an outer ring body (2.1) fixed between the front barrel (1.1) and the rear barrel (1.2), an inner ring body (2.2) concentrically arranged in the outer ring body (2.1), and a plurality of support rods (2.4) fixed between the inner ring body (2.2) and the outer ring body (2.1) along the radial direction; A plurality of fan-shaped sieve plates (3) are fixed to the front wall of the support rod (2.4) to form a ring-shaped sieve surface; The balance body (5) is rotatably sleeved in the inner ring body (2.2), the bottom of the balance body (5) is a solid part (5.1.1), and the top of the balance body (5) is provided with a mounting cavity (5.1.2); The support member (6) includes a circular plate (6.1) fixed to the front and rear ends of the balance body (5) and a strip-shaped shell (6.2) fixed to the bottom end of the circular plate (6.1) and extending upward; The support barrel (8) extends along the axial direction of the barrel (1); A plurality of surface detection modules (9) are uniformly nested on the top of the support barrel (8) along the axial direction, and the spacing of the surface detection modules (9) is equal to the axial length of the lining plate; The electric push rod (7) is sleeved in the inner cavity of one end of the support barrel (8), the end of the telescopic rod of the electric push rod (7) is fixed vertically to the top end of the strip-shaped shell (6.2), and the maximum stroke of the periodic extension and contraction of the electric push rod (7) is equal to the axial length of the lining plate; The control assembly (10) is arranged in the mounting cavity (5.1.2), and the control system integrated in the control assembly (10) is used for detecting and storing the swing angle data of the balance body (5), detecting and storing the axial stroke data of the support barrel (8), storing the detection data of the surface detection module (9), and supplying power. The outer edges of the front and rear ends of the outer ring body (2.1) are respectively connected with the rear end of the front barrel (1.1) and the front end of the rear barrel (1.2) by axially extending bolts, the middle part of the outer circumferential wall of the inner ring body (2.2) is provided with an annular protrusion (2.3), and the inner ends of the support rods (2.4) are fixed uniformly on the outer circumferential wall of the annular protrusion (2.3) along the circumferential direction.

2. The large scale ball mill with ease of detection of the liner as claimed in claim 1 wherein: It also includes a fixing member (4) which includes a batten (4.1) fixed to the front wall of the support rod (2.4) and a plurality of clamping blocks (4.2) arranged on both sides of the center of the front wall of the batten (4.1), the rear wall of the fan-shaped sieve plate (3) is provided with a clamping groove (3.1) matched with the clamping block (4.2) near the two side edges, and the fan-shaped sieve plate (3) is made of polyurethane material.

3. The large scale ball mill with ease of detection of the liner as claimed in claim 1 wherein: ​ 4. The large ball mill with ease of detection of the liner plate as claimed in claim 3 wherein: A plurality of screw rods (4.3) are vertically fixed at the center of the rear wall of the batten (4.1), and the screw rods (4.3) are screwed with compression nuts (4.4) at the rear wall of the support rod (2.4).

5. The large scale ball mill with ease of detection of the liner as claimed in claim 1 wherein: The balance body (5) comprises a column (5.1) rotatably sleeved in the inner ring body (2.2) and a rotary support (5.2) sleeved at both ends of the column (5.1), the rotary support (5.2) is fixed to the outer edge of the front and rear ends of the inner ring body (2.2), the circular plate (6.1) is fixed to the inner ring of the rotary support (5.2), the bottom of the column (5.1) is a solid part (5.1.1), and the accommodation cavity (5.1.2) is arranged at the top of the column (5.1). The support cylinder (8) is uniformly provided with a plurality of sleeves (8.1) at the top in the axial direction, and the surface detection module (9) is fixedly sleeved in the sleeve (8.1).

6. The large scale ball mill with ease of detection of the liner as claimed in claim 1 wherein: The control assembly (10) is integrated with an inclination detection module (10.3) for detecting the deflection angle of the top surface of the solid part (5.1.1).

7. The large scale ball mill with ease of detection of the liner as claimed in claim 1 wherein: The support cylinder (8) is provided with an axial stroke measurement module (10.2) for detecting the telescopic stroke of the telescopic rod of the electric push rod (7).

8. The large scale ball mill with ease of detection of the liner plate as claimed in claim 7 wherein: The control assembly (10) is integrated with a central control module (10.1), the central control module (10.1) is electrically connected with a data storage module (10.4) and a power module (10.6), the output end of the central control module (10.1) is electrically connected with a telescopic control module (10.5), the telescopic control module (10.5) is used for controlling the start and stop of the electric push rod (7), and the output ends of the inclination detection module (10.3) and the axial stroke measurement module (10.2) are electrically connected with the input end of the central control module (10.1).

9. The large scale ball mill with ease of detection of the liner as claimed in claim 8 wherein: The column (5.1) is made of stainless steel, and the strip-shaped shell (6.2) and the support cylinder (8) are made of carbon fiber composite material.

10. The large scale ball mill with ease of detection of the liner as claimed in claim 5 wherein: ​

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