Electromagnetic ball mill

Abstract

The application discloses an electromagnetic ball mill, which comprises a barrel and a magnetic control system; the barrel comprises a barrel body, a front end cover, a rear end cover and magnetic ball stones, wherein the barrel body is internally provided with a cavity, and the two ends of the barrel body are open and detachably connected with the front end cover and the rear end cover respectively; the magnetic ball stones are arranged in the cavity; the magnetic control system comprises an inner magnetic coil substrate, an inner magnetic coil, an outer magnetic coil substrate, an outer magnetic coil, a magnetic coil shell layer and a magnetic field controller, wherein the inner magnetic coil substrate, the inner magnetic coil, the outer magnetic coil substrate, the outer magnetic coil and the magnetic coil shell layer are sequentially coated on the outer wall of the barrel body; the magnetic field controller is connected with the inner magnetic coil and the outer magnetic coil respectively, and is used for controlling the inner magnetic coil and the outer magnetic coil. The electromagnetic ball mill of the embodiment has the advantages of simple structure, stable operation, low failure rate and the like, and can construct a complex magnetic ball stone stress environment through double magnetic fields, so that the grinding efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ball mill equipment, in particular to an electromagnetic ball mill. BACKGROUND

[0002] Ball mill is a key equipment for grinding after crushing. Ball mill is used for grinding various ores and other materials by loading a certain amount of steel balls as grinding medium in its cylinder. It is widely used in the industries of mineral processing, building materials and chemical industry.

[0003] The traditional ball mill mainly drives the barrel to rotate through the mechanical transmission mechanism such as motor and speed changer, and the rotation of the barrel drives the rotation of the internal ball stone to realize the grinding of the material. The traditional ball mill is limited by its own mechanical structure, and has the problems of heavy structure, complex mechanical structure, low speed, high noise, high energy consumption, easy to malfunction, and can only rotate in one fixed direction during work. SUMMARY

[0004] The present application aims to solve one of the above technical problems at least to some extent.

[0005] Therefore, one purpose of the present application is to provide an electromagnetic ball mill which is simple in structure, stable in operation, low in failure rate, and can build a complex magnetic ball stone stress environment through double magnetic field, greatly improving the grinding efficiency.

[0006] To achieve the above purpose, the first embodiment of the present application provides an electromagnetic ball mill, comprising: a barrel and a magnetic control system; the barrel comprises: a cylinder, a front end cover, a rear end cover and a magnetic ball stone, wherein the cylinder is internally provided with a cavity, and the two ends of the cylinder are open, and the two ends of the cylinder are detachably connected with the front end cover and the rear end cover respectively; the magnetic ball stone is arranged in the cavity; the magnetic control system comprises: an inner magnetic coil substrate, an inner magnetic coil, an outer magnetic coil substrate, an outer magnetic coil, a magnetic coil shell layer and a magnetic field controller, wherein the inner magnetic coil substrate, the inner magnetic coil, the outer magnetic coil substrate, the outer magnetic coil and the magnetic coil shell layer are sequentially wrapped on the outer wall of the cylinder; the magnetic field controller is connected with the inner magnetic coil and the outer magnetic coil respectively, and the magnetic field controller is used for controlling the inner magnetic coil and the outer magnetic coil.

[0007] The electromagnetic ball mill of the present application is simple in structure, stable in operation, low in failure rate, and can build a complex magnetic ball stone stress environment through double magnetic field, greatly improving the grinding efficiency.

[0008] In addition, the electromagnetic ball mill according to the above embodiments of the present application can also have the following additional technical features:

[0009] In one embodiment of the present application, the magnetic field controller is configured to control the inner magnetic coil to generate a first magnetic field and control the outer magnetic coil to generate a second magnetic field.

[0010] In one embodiment of the present application, the front end cover is provided with an inlet hole, and the rear end cover is provided with an outlet hole.

[0011] In one embodiment of the present application, the inlet hole and the outlet hole are both provided with a cover plate for preventing powder splashing.

[0012] In one embodiment of the present application, the magnetic spherulite comprises an inner magnetic spherule and an outer wrapping layer, and the outer wrapping layer wraps the inner magnetic spherule.

[0013] In one embodiment of the present application, the magnetic field controller is provided with a frequency converter and a timing module.

[0014] In one embodiment of the present application, the inner magnetic coil substrate, the inner magnetic coil, the outer magnetic coil substrate, the outer magnetic coil, and the magnetic coil shell layer are consistent with the length of the barrel.

[0015] In one embodiment of the present application, the front end cover and the rear end cover are respectively connected with vertically arranged support frames, and the bottoms of the two support frames are connected by a crossbar for supporting the barrel.

[0016] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the accompanying drawings, wherein:

[0018] Figure 1 is a schematic view of an internal structure of an electromagnetic ball mill according to one embodiment of the present application;

[0019] Figure 2 is a schematic view of an internal structure of an electromagnetic ball mill according to another embodiment of the present application; and

[0020] Figure 3 is a schematic view of a structure of a magnetic spherulite according to one embodiment of the present application;

[0021] As shown in the drawings:

[0022] 11, barrel; 12, front end cover; 121, feeding hole; 13, rear end cover; 131, discharging hole; 14, magnetic ball; 141, inner magnetic ball core; 142, outer wrapping layer; 21, inner magnetic coil substrate; 22, inner magnetic coil; 23, outer secondary coil substrate; 24, outer magnetic coil; 25, magnetic coil shell layer; 26, magnetic field controller. DETAILED DESCRIPTION

[0023] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] The electromagnetic ball mill of the embodiments of the present application is described below in combination with the drawings.

[0025] As shown in Figure 1 and Figure 2 , the electromagnetic ball mill of the embodiments of the present application can include a barrel 1 (not specifically marked in the figure) and a magnetic control system 2 (not specifically marked in the figure).

[0026] As shown in Figure 1 , the barrel 1 can include a barrel body 11, a front end cover 12, a rear end cover 13 and a magnetic ball 14.

[0027] Specifically, the barrel body 11 is internally provided with a cavity, and the barrel body is open at both ends, the two ends of the barrel body 11 are respectively detachably connected with the front end cover 12 and the rear end cover 13, and the magnetic ball 14 is arranged in the cavity for grinding materials.

[0028] It should be noted that the front end cover 12 is provided with a feeding hole 121 for feeding grinding materials, and the rear end cover 13 is provided with a discharging hole 131 for discharging ground materials.

[0029] As shown in Figure 2 , the magnetic control system 2 can include an inner magnetic coil substrate 21, an inner magnetic coil 22, an outer magnetic coil substrate 23, an outer magnetic coil 24, a magnetic coil shell layer 25 and a magnetic field controller 26.

[0030] Among them, the inner magnetic coil substrate 21, the inner magnetic coil 22, the outer magnetic coil substrate 23, the outer magnetic coil 24 and the magnetic coil shell layer 25 are sequentially wrapped on the outer wall of the barrel body 11, the magnetic field controller is connected with the inner magnetic coil 22 and the outer magnetic coil 24 respectively, and the magnetic field controller 26 is used for controlling the inner magnetic coil 22 and the outer magnetic coil 24.

[0031] Specifically, the magnetic field controller 26 is specifically configured to control the inner magnetic coil 22 to generate the first magnetic field and control the outer magnetic coil 24 to generate the second magnetic field, and the first magnetic field and the second magnetic field jointly control the magnetic ballstone 14, so that the magnetic ballstone 14 can grind the material.

[0032] It should be noted that the inner magnetic coil substrate 21, the inner magnetic coil 22, the outer magnetic coil substrate 23, the outer magnetic coil 24 and the magnetic coil shell layer 25 are consistent with the length of the cylinder body 11, so that the magnetic ballstone 14 in the entire cylinder body 11 can be controlled by the inner magnetic coil 22 and the outer magnetic coil 24 when the material is ground.

[0033] In the embodiment of the present application, the material is put into the cylinder body 11 through the feeding hole 121 for grinding, the magnetic field controller 26 controls the inner magnetic coil 22 to generate the first magnetic field, the first magnetic field drives the magnetic ballstone 14 to run along the inner wall of the cylinder body 11, the magnetic ballstone 14 is brought to a certain height by the first magnetic field and then falls to the bottom of the cylinder body 11, and then is brought to a high place again by the first magnetic field and falls, and the magnetic ballstone 14 falling from the high place impacts the material to achieve the grinding effect. After the material is ground, the material can be taken out through the discharging hole 131, and the falling of the magnetic ballstone 14 directly impacts the material in the cylinder body 11 and the impact of the magnetic ballstone 14 on the material in different directions after the impact of the magnetic ballstone 14 on the material, so that the impact direction of the material is diversified and the grinding effect of the material is better.

[0034] Specifically, the first magnetic field strength of the inner magnetic coil 22 is adjusted by the magnetic field controller 26, so that the magnetic force received by the magnetic ballstone 14 can be changed, the falling height of the magnetic ballstone 14 can be adjusted, and the impact force of the magnetic ballstone 14 on the material during grinding can be adjusted; the speed of rotation of the first magnetic field of the inner magnetic coil 22 is adjusted by the magnetic field controller 26, so that the movement speed of the magnetic ballstone 14 can be adjusted; the rotation direction of the first magnetic field of the inner magnetic coil 22 is adjusted in counterclockwise or clockwise, so that the movement direction of the magnetic ballstone 14 can be changed. Compared with the ball mill which grinds in a single direction, the material is more fully ground and the grinding efficiency is higher when the material is ground.

[0035] In order to enhance the magnetic field strength, increase the falling height of the magnetic ballstone 14 and accelerate the crushing and grinding of the material, the working state of the outer magnetic coil 24 can be controlled by the magnetic field controller 26, so that the rotation direction of the second magnetic field generated by the outer magnetic coil 24 is synchronized with the rotation direction of the first magnetic field generated by the inner magnetic coil 22, and the magnetic field strength is enhanced.

[0036] In order to create a complex stress environment of the magnetic spherules 14, increase the impact force between the magnetic spherules 14 and the frequency of the impact between the magnetic spherules 14, so as to achieve multi-directional grinding of the material, the working state of the outer magnetic coil 24 can be controlled by the magnetic field controller 26, the outer magnetic coil 24 periodically generates a second magnetic field with a direction change at a certain time interval, the impact force and the impact frequency of the magnetic spherules 14 on the material change, the magnetic spherules 14 are affected by different magnetic fields generated by the inner magnetic coil 22 and the outer magnetic coil 24, the impact force and the frequency between the magnetic spherules 14 are increased, the impact direction of the material changes, the material is more fully ground, and the grinding efficiency of the material is improved.

[0037] In an embodiment of the present application, a cover plate is arranged at the feeding hole 121 and the discharging hole 131 to prevent powder from splashing out.

[0038] Specifically, when the material needs to be put into the barrel 11 for grinding, the cover plate at the feeding hole 121 is opened, after the material is put in, the cover plate at the feeding hole 121 is closed, the material is ground, after the grinding of the material is completed, the cover plate at the discharging hole 131 is opened, the ground material in the barrel 11 is discharged from the barrel 11, and then the cover plate at the discharging hole 131 is closed.

[0039] It should be noted that when the material is ground in the barrel 11, the cover plates at the feeding hole 121 and the discharging hole 131 are in a closed state, so as to prevent dust generated by the ground material from splashing out and polluting the air.

[0040] In another embodiment of the present application, a feeding device is arranged at the feeding hole 121, and a cover plate is arranged at the discharging hole 131.

[0041] The feeding device can include a feeding hopper, a feeding barrel, a motor, and a spiral transmission blade, the feeding barrel is arranged obliquely, the higher end of the feeding barrel is communicated with the feeding hole 121, the motor is arranged at the lower end of the feeding barrel, the spiral transmission blade is connected with the motor and extends into the feeding barrel to the feeding hole 121, and the feeding hopper is arranged on the feeding barrel for feeding.

[0042] Specifically, when feeding, the material is poured into the feeding hopper, the motor is turned on, the motor drives the spiral transmission blade to transmit the material from the feeding hopper along the feeding barrel to the barrel 11, after the material is ground, the cover plate at the discharging hole 131 is opened, the ground material is taken out from the barrel 11, the feeding device is more convenient than manual feeding from the feeding hole, and the material can be fed at a lower point, thereby reducing the danger of the operator feeding from a high place, and making the feeding safer.

[0043] In an embodiment of the present application, as shown in FIG. 6, the barrel 11 is arranged in the outer magnetic coil 24, and the inner magnetic coil 22 is arranged in the barrel 11. Figure 3As shown, the magnetic spherule 14 comprises an inner magnetic core 142 and an outer coating layer 141, and the outer coating layer 141 wraps the inner magnetic core 142.

[0044] It should be noted that the inner magnetic core 142 is made of permanent magnetic material to ensure that the magnetic spherule 14 can always be controlled by the magnetic field, and the outer coating layer 141 is made of impact-resistant and wear-resistant material to improve the service life of the magnetic spherule 14.

[0045] In an embodiment of the present application, a frequency converter is arranged in the magnetic field controller 26 to adjust the power frequency and the current size.

[0046] Specifically, the formula for calculating the magnetic field strength is H=N×I / Le, where H is the magnetic field strength, N is the number of turns of the coil, I is the current, and Le is the effective magnetic circuit length. It can be seen that under the premise of not adjusting the coil structure, the size of the magnetic field strength is controlled by the current size, so by adjusting the current size through the frequency converter in the magnetic field controller 26, the magnetic field strength can be changed, and in turn the lifting height of the magnetic core 14 can be changed. In addition, the magnetic field rotation speed is proportional to the power frequency, and by adjusting the power frequency through the frequency converter in the magnetic field controller 26, the electromagnetic rotation speed can be changed, and in turn the movement speed of the magnetic spherule 14 can be changed. Similarly, by changing the current direction through the frequency converter in the magnetic field controller 26, the movement direction of the magnetic spherule 14 can be changed. By adjusting the working state of the inner magnetic coil 22 through the magnetic field controller 26, the movement state of the magnetic spherule 14 can be changed, and in combination with the use of the outer magnetic coil 24, the stress state of the magnetic spherule 14 is more complex, which is no longer a single fixed height unidirectional impact material, and in turn the efficiency of material grinding is improved.

[0047] In an embodiment of the present application, a timing module is arranged in the magnetic field controller 26.

[0048] It should be noted that when creating a multiple stress environment for the magnetic spherule, the outer magnetic coil 24 needs to periodically generate magnetic fields of different directions at certain time intervals, and in turn cooperate with the inner magnetic coil 22 to jointly affect the stress of the magnetic spherule 14. Therefore, when the outer magnetic coil 24 generates the second magnetic field at an interval time, the timing module in the magnetic field controller 26 can be used.

[0049] In an embodiment of the present application, the front end cover 12 and the rear end cover 13 are respectively connected with vertically arranged support frames, and the bottoms of the two support frames are connected through a cross bar for supporting the cylinder.

[0050] Specifically, the two support frames can be connected with the front end cover 12 and the rear end cover 13 through connecting pieces, and the two ends of the cross bar can be connected with the bottoms of the two support frames through welding. The bottoms of the two support frames can be provided with universal wheels with locking function, which facilitates the movement and stopping of the cylinder.

[0051] As a possible case, the bottom of the two supporting frames is provided with a mounting plate, and mounting holes are formed in the mounting plate, so that the whole device can be fixed to the vehicle body of a vehicle, facilitating mobile use.

[0052] In summary, compared with the traditional ball mill which is limited by its mechanical structure, is heavy and has a more complex mechanical structure, the application utilizes the rotating electromagnetic field to drive the internal magnetic ball stone to rotate without a mechanical transmission mechanism, and the structure is simple and light, and the double magnetic field provides a more complex stress environment for the magnetic ball stone, and the grinding efficiency of the material is higher.

[0053] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0054] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0055] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. 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.

[0056] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "over", "above" and "on top of" 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 than the second feature in horizontal height. The first feature "under", "below" and "underneath" 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 than the second feature in horizontal height.

[0057] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0058] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and cannot be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. An electromagnetic ball mill, characterized in that, The application relates to a magnetic control system and a barrel. The barrel comprises a barrel body (11), a front end cover (12), a rear end cover (13) and a magnetic ball stone (14), wherein, The barrel body (11) is internally provided with a cavity, and the two ends of the barrel body are open, and the two ends of the barrel body (11) are detachably connected with the front end cover (12) and the rear end cover (13) respectively; The magnetic ball stone (14) is arranged in the cavity; The magnetic control system comprises an inner magnetic coil substrate (21), an inner magnetic coil (22), an outer magnetic coil substrate (23), an outer magnetic coil (24), a magnetic coil shell layer (25) and a magnetic field controller (26), wherein, The inner magnetic coil substrate (21), the inner magnetic coil (22), the outer magnetic coil substrate (23), the outer magnetic coil (24) and the magnetic coil shell layer (25) are sequentially wrapped on the outer wall of the barrel body (11); The magnetic field controller (26) is connected with the inner magnetic coil (22) and the outer magnetic coil (24) respectively, and the magnetic field controller (26) is used for controlling the inner magnetic coil (22) and the outer magnetic coil (24), controlling the inner magnetic coil (22) to generate a first magnetic field, and controlling the outer magnetic coil (24) to generate a second magnetic field. The front end cover (12) is provided with a feeding hole (121), and the rear end cover (13) is provided with a discharging hole (131).

2. The electromagnetic ball mill according to claim 1, characterized in that Cover plates for preventing powder from splashing are arranged at the feeding hole (121) and the discharging hole (131).

3. The electromagnetic ball mill according to claim 2, characterized in that The magnetic ball stone (14) comprises an inner magnetic ball core (142) and an outer wrapping layer (141), and the outer wrapping layer (141) wraps the inner magnetic ball core (142).

4. The electromagnetic ball mill as claimed in claim 1, wherein, A frequency converter and a timing module are arranged in the magnetic field controller (26).

5. The electromagnetic ball mill as claimed in claim 1, wherein, The inner magnetic coil substrate (21), the inner magnetic coil (22), the outer magnetic coil substrate (23), the outer magnetic coil (24) and the magnetic coil shell layer (25) are consistent with the length of the barrel body (11).

6. The electromagnetic ball mill as claimed in claim 1, wherein, The front end cover (12) and the rear end cover (13) are respectively connected with vertically arranged support frames, the bottoms of the two support frames are connected through a cross rod, and the support frames are used for supporting the barrel body (11).

7. The electromagnetic ball mill as claimed in claim 1, wherein, ​

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