A high-energy dry powder ball milling equipment

Abstract

The invention discloses a high-energy dry powder ball milling equipment, including a ball mill and a vibration device, the ball mill is fixed on the vibration device, the ball mill includes a ball mill body, an electrode rod and a valve group; the ball mill body includes a ball mill side wall, a first cover plate and a second cover plate; the electrode rod is arranged in the ball mill body, and the two ends are respectively fixed to the first cover plate and the second cover plate; the electrode rod includes an embryo; the embryo is hollow inside to form a cavity, and its surface is coated with a wear-resistant insulating layer; the vibration device includes a mounting platform, a vibration base, an adjustable vibration motor and an elastic component; the output shaft of the adjustable vibration motor is provided with a swing arm, and an adjustable counterweight is provided on the swing arm. The hollow electrode rod can reduce the concentrated discharge of the high-voltage electrode, and the surface coated with wear-resistant insulation can reduce the electrode loss caused by wear and extend the service life of the electrode.

Description

Technical Field

[0001] The invention relates to high-energy ball milling equipment, in particular to high-energy dry powder ball milling equipment. Background Art

[0002] Ball milling is a process of crushing and mixing materials by using the impact of the grinding body and the grinding effect between the grinding body and the inner wall of the ball mill. When the ball mill reactor rotates, due to the friction between the grinding body and the inner wall of the ball mill, the grinding body is carried up and then falls down in the direction of rotation, and the materials are continuously crushed under the action of impact force and shear force.

[0003] High-energy ball milling is a method of using the high-speed rotation or vibration of the ball mill to make the hard balls strongly impact, grind and stir the raw materials, and crush the powder into nano-sized particles. There is currently a high-energy ball milling equipment that uses electrode discharge and conductive grinding balls to form an electric field in the tank, and uses the electric field to break through the powder and cooperate with the ball mill to perform high-energy crushing.

[0004] The existing high-energy ball milling equipment has the following shortcomings: the electrodes work in a long-term discharge state, the working voltage is high, concentrated discharge is easy to occur, the loss is fast, and the service life is short. Summary of the invention

[0005] In view of the above-mentioned deficiencies of the current high-energy ball mill, the present invention provides a high-energy dry powder ball milling device, which can achieve the effect of extending the service life of the electrode.

[0006] To achieve the above object, the embodiments of the present invention adopt the following technical solutions:

[0007] A high-energy dry powder ball milling equipment comprises a ball mill and a vibrating device, wherein the ball mill is fixed on the vibrating device, and the ball mill comprises a ball mill body, an electrode rod and a valve group; the ball mill body comprises a ball mill side wall, a first cover plate and a second cover plate; the two ends of the ball mill side wall are respectively fixedly connected to the first cover plate and the second cover plate; the electrode rod is arranged in the ball mill body, and the two ends of the electrode rod are respectively connected to the first cover plate and the second cover plate; the electrode rod comprises a wear-resistant insulating layer and an embryo from the outside to the inside; the embryo is hollow inside to form a cavity; the valve group is arranged on the ball mill body and is connected to the inside of the ball mill body; the vibrating device comprises a mounting platform, a vibration base and an adjustable vibration motor; the adjustable vibration motor is fixedly connected to the mounting platform; the ball mill body is fixed on the mounting platform.

[0008] According to one aspect of the present invention, the mounting platform and the vibration base are connected via a plurality of elastic components, and the elastic components include a plurality of parallel balancing springs.

[0009] According to one aspect of the present invention, the adjustable vibration motor comprises a swing arm; the rotation axis of the swing arm is perpendicular to the mounting platform.

[0010] According to one aspect of the present invention, the adjustable vibration motor is a dual-output shaft motor, and swing arms are provided at both ends of the output shaft; and a counterweight is provided on the swing arm.

[0011] According to one aspect of the present invention, the cavity is a cylindrical cavity.

[0012] According to one aspect of the present invention, the installation platform includes a connecting plate and a structural member; the cross-section of the structural member is in the shape of an inverted "J", including a groove and a mounting component located at the edge of the groove.

[0013] According to one aspect of the present invention, the adjustable vibration motor is disposed in the groove; and the mounting component is fixedly connected to the elastic component.

[0014] According to one aspect of the present invention, the valve group is arranged on the first cover plate or the second cover plate, and includes a feed valve, a discharge valve and a vacuum valve.

[0015] According to one aspect of the present invention, the feed valve and the discharge valve are respectively located at two ends of the side wall of the ball mill, wherein the feed valve is located higher than the discharge valve.

[0016] According to one aspect of the present invention, the ball mill body is fixedly connected to the connecting plate via a fixing bracket; the fixing bracket is electrically connected to the ball mill body; the fixing bracket is connected to the power supply via a wire; and one end of the embryo is connected to the power supply via a wire.

[0017] Advantages of the present invention:

[0018] The electrode rod embryo is hollow inside and covered with a wear-resistant insulating layer on the outside, which increases the discharge area and reduces the distance between the electrode and the discharge area on the inner wall of the ball mill, which can reduce the working voltage and effectively reduce the electrode loss caused by concentrated discharge and wear of the high-voltage electrode, thereby extending the service life of the electrode rod; the output shaft of the adjustable vibration motor is provided with a double swing arm, and the swing arm is provided with a counterweight. By adjusting the number of counterweights and the installation angle, the amplitude and vibration mode of the equipment can be adjusted, so as to adjust to the vibration working condition suitable for the equipment, so that the materials in the ball mill can be mixed more evenly and the reaction is more sufficient, which effectively improves the working efficiency of the high-energy ball mill equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic structural diagram of a high-energy dry powder ball milling device according to the present invention;

[0021] Figure 2 It is a structural schematic diagram of a ball mill jar part of the present invention;

[0022] Figure 3 The figure is a schematic structural diagram of a vibration-generating device according to the present invention.

[0023] Illustrations: 1. Ball mill body; 11. Ball mill side wall; 12. First cover plate; 13. Second cover plate; 14. Fixed bracket; 2. Electrode rod; 21. Embryo; 22. Wear-resistant insulating layer; 31. Feed valve; 32. Discharge valve; 33. Vacuum valve; 4. Mounting platform; 41. Connecting plate; 42. Structural parts; 5. Vibration base; 6. Adjustable vibration motor; 61. Swing arm; 7. Elastic component; 8. Wire. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] Embodiment 1

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, a high-energy dry powder ball milling device includes a ball mill and a vibrating device, the ball mill is fixed on the vibrating device, the ball mill includes a ball mill body 1, an electrode rod 2 and a valve group; the ball mill body 1 includes a ball mill side wall 11, a first cover plate 12 and a second cover plate 13; the two ends of the ball mill side wall 11 are respectively fixed to the first cover plate 12 and the second cover plate 13; the electrode rod 2 is arranged in the ball mill body 1, and its two ends are respectively connected to the first cover plate 12 and the second cover plate 13; the electrode rod 2 includes a wear-resistant insulating layer 22 and an embryo 21 from the outside to the inside; the embryo 21 is hollow inside to form a cavity; the valve group is arranged on the ball mill body 1, and is connected to the inside of the ball mill body 1;

[0027] The vibration device includes a mounting platform 4, a vibration base 5, an adjustable vibration motor 6 and an elastic component 7; the mounting platform 4 and the vibration base 5 are connected via a plurality of elastic components 7; the adjustable vibration motor 6 is fixedly connected to the mounting platform 4; and the ball mill body 1 is fixed on the mounting platform 4.

[0028] In this embodiment, the elastic component 7 is composed of a plurality of parallel balancing springs. In practical applications, the overall performance parameters of the elastic component 7 can be adjusted by adjusting the number of balancing springs or replacing balancing springs of different specifications, thereby adjusting the working state of the ball mill.

[0029] The valve group is arranged on the first cover plate 12 or the second cover plate 13, and includes a feed valve 31, a discharge valve 32 and a vacuum valve 33; wherein the feed valve 31 and the discharge valve 32 are respectively located at the two ends of the side wall 11 of the ball mill, and the position of the feed valve 31 is higher than that of the discharge valve 32; the vacuum valve 33 is located on the opposite side of the feed valve 31.

[0030] In this embodiment, grooves are provided inside the first cover plate 12 and the second cover plate 13 at both ends of the side wall 11 of the ball mill, and the electrode rod 2 is fixedly connected to the cover plates at both ends by being embedded in the above grooves, and the fixing method is simple and reliable;

[0031] The ball mill body 1 is fixedly connected to the connecting plate 41 through a fixing bracket 14; the fixing bracket 14 is electrically connected to the ball mill body 1; the fixing bracket 14 is connected to the high-voltage power supply through a wire 8; one end of the electrode rod 2 embryo 21 is connected to the high-voltage power supply through the wire 8; in this way, when power is turned on, an electric field will be formed between the outer surface of the electrode rod 2 and the inner wall of the ball mill body;

[0032] Since the embryo 21 of the electrode rod 2 is hollow, the discharge area of ​​the electrode can be increased without significantly increasing the installation weight of the electrode rod 2, and the distance between the electrode rod 2 and the discharge area of ​​the inner wall of the ball mill tank can be reduced. Combined with adjusting the air pressure in the tank, a lower working voltage can be obtained, thereby effectively reducing the concentrated discharge of the high-voltage electrode. The outside of the electrode rod 2 is coated with a wear-resistant insulating layer 22 to reduce the electrode loss caused by wear, which can effectively increase the service life of the electrode rod 2.

[0033] When the equipment is actually running, a protective cover is set outside (such as Figure 1 (as shown in the middle mark A).

[0034] Embodiment 2

[0035] like Figure 1 , Figure 2 and Figure 3As shown, a high-energy dry powder ball milling device includes a ball mill and a vibrating device, the ball mill is fixed on the vibrating device, the ball mill includes a ball mill body 1, an electrode rod 2 and a valve group; the ball mill body 1 includes a ball mill side wall 11, a first cover plate 12 and a second cover plate 13; the two ends of the ball mill side wall 11 are respectively fixed to the first cover plate 12 and the second cover plate 13; the electrode rod 2 is arranged in the ball mill body 1, and its two ends are respectively connected to the first cover plate 12 and the second cover plate 13; the electrode rod 2 includes a wear-resistant insulating layer 22 and an embryo 21 from the outside to the inside; the embryo 21 is hollow inside to form a cavity; the valve group is arranged on the ball mill body 1, and is connected to the inside of the ball mill body 1;

[0036] The vibration device includes a mounting platform 4, a vibration base 5, an adjustable vibration motor 6 and an elastic component 7; the mounting platform 4 and the vibration base 5 are connected via a plurality of elastic components 7; the adjustable vibration motor 6 is fixedly connected to the mounting platform 4; and the ball mill body 1 is fixed on the mounting platform 4.

[0037] In this embodiment, the elastic component 7 is composed of a plurality of parallel balancing springs. In practical applications, the overall performance parameters of the elastic component 7 can be adjusted by adjusting the number of balancing springs or replacing balancing springs of different specifications, thereby adjusting the working state of the ball mill.

[0038] A swing arm 61 is arranged on the output shaft of the adjustable vibration motor 6, and the motor drives the swing arm 61 to rotate and cause vibration; wherein the rotation axis of the swing arm 61 is perpendicular to the mounting platform 4; the adjustable vibration motor 6 is a dual-output shaft motor, and swing arms 61 are arranged at both ends of its output shaft; in actual application, the installation angle of the swing arm 61 is adjustable, and in a normal state, the swing arm 61 is perpendicular to the output shaft of the adjustable vibration motor 6, and a detachable counterweight is also arranged on the swing arm 61;

[0039] In addition to directly adjusting the output power and movement mode of the adjustable vibration motor 6, the amplitude of the platform can be adjusted by increasing or decreasing the counterweight, and the vibration mode of the platform can be adjusted by adjusting the angle of the counterweights at both ends of the motor. A variety of methods are combined to adjust the entire machine to a suitable vibration operating condition, so that the materials in the ball mill can be mixed more evenly and react more fully when the equipment is working, which can effectively improve work efficiency compared to traditional high-energy ball mills.

[0040] The valve group is arranged on the first cover plate 12 or the second cover plate 13, and includes a feed valve 31, a discharge valve 32 and a vacuum valve 33; wherein the feed valve 31 and the discharge valve 32 are respectively located at the two ends of the side wall 11 of the ball mill, and the position of the feed valve 31 is higher than that of the discharge valve 32; the vacuum valve 33 is located on the opposite side of the feed valve 31.

[0041] The ball mill body 1 is fixedly connected to the connecting plate 41 through a fixing bracket 14; the fixing bracket 14 is electrically connected to the ball mill body 1; the fixing bracket 14 is connected to the high-voltage power supply through a wire 8; one end of the electrode rod 2 embryo 21 is connected to the high-voltage power supply through the wire 8; in this way, when power is turned on, an electric field will be formed between the outer surface of the electrode rod 2 and the inner wall of the ball mill body.

[0042] Embodiment 3

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, a high-energy dry powder ball milling device includes a ball mill and a vibrating device, the ball mill is fixed on the vibrating device, the ball mill includes a ball mill body 1, an electrode rod 2 and a valve group; the ball mill body 1 includes a ball mill side wall 11, a first cover plate 12 and a second cover plate 13; the two ends of the ball mill side wall 11 are respectively fixed to the first cover plate 12 and the second cover plate 13; the electrode rod 2 is arranged in the ball mill body 1, and its two ends are respectively connected to the first cover plate 12 and the second cover plate 13; the electrode rod 2 includes a wear-resistant insulating layer 22 and an embryo 21 from the outside to the inside; the embryo 21 is hollow inside to form a cavity; the valve group is arranged on the ball mill body 1, and is connected to the inside of the ball mill body 1;

[0044] The vibration device includes a mounting platform 4, a vibration base 5, an adjustable vibration motor 6 and an elastic component 7; the mounting platform 4 and the vibration base 5 are connected via a plurality of elastic components 7; the adjustable vibration motor 6 is fixedly connected to the mounting platform 4; and the ball mill body 1 is fixed on the mounting platform 4.

[0045] In this embodiment, the elastic component 7 is composed of a plurality of parallel balancing springs. In practical applications, the overall performance parameters of the elastic component 7 can be adjusted by adjusting the number of balancing springs or replacing balancing springs of different specifications, thereby adjusting the working state of the ball mill.

[0046] A swing arm 61 is arranged on the output shaft of the adjustable vibration motor 6, and the motor drives the swing arm 61 to rotate and cause vibration; wherein the rotation axis of the swing arm 61 is perpendicular to the mounting platform 4; the adjustable vibration motor 6 is a dual-output shaft motor, and swing arms 61 are arranged at both ends of its output shaft; in actual application, the installation angle of the swing arm 61 is adjustable, and in a normal state, the swing arm 61 is perpendicular to the output shaft of the adjustable vibration motor 6, and a detachable counterweight is also arranged on the swing arm 61;

[0047] In addition to directly adjusting the output power and motion mode of the adjustable vibration motor 6, the amplitude of the platform can also be adjusted by increasing or decreasing the counterweight. The counterweight is an eccentric fan-shaped counterweight. The vibration mode of the platform is adjusted by adjusting the angle of the counterweights at both ends of the motor (adjusting the ratio of the circumferential amplitude to the upper and lower amplitudes). A variety of methods are combined to adjust the entire machine to a suitable vibration operating condition, so that the materials (powder and conductive grinding balls) in the ball mill can be mixed more evenly when the equipment is working, so that the electric field distribution is more uniform and it is easier to break down the powder, thereby reducing the discharge voltage and making the reaction more complete. Compared with traditional high-energy ball mills, it can effectively improve work efficiency.

[0048] The mounting platform 4 includes a connecting plate 41 and a structural member 42; wherein the connecting plate 41 is used to mount the ball mill tank body; the cross section of the structural member 42 is in the shape of an inverted "J", including a groove and a mounting component located at the edge of the groove.

[0049] The adjustable vibration motor 6 is arranged in the groove to leave enough space for the installation of the ball mill body; the installation component located at the edge is responsible for fixed connection with the elastic component 7; in this way, the adjustable vibration motor 6 is located in the center of the vibration device, and the elastic component 7 is distributed on the edge. When the motor is working, the ball mill body 1 can vibrate stably along with the installation platform 4.

[0050] The valve group is arranged on the first cover plate 12 or the second cover plate 13, and includes a feed valve 31, a discharge valve 32 and a vacuum valve 33; wherein the feed valve 31 and the discharge valve 32 are respectively located at the two ends of the side wall 11 of the ball mill, and the position of the feed valve 31 is higher than that of the discharge valve 32; the vacuum valve 33 is located on the opposite side of the feed valve 31.

[0051] In this embodiment, grooves are provided inside the first cover plate 12 and the second cover plate 13 at both ends of the side wall 11 of the ball mill, and the electrode rod 2 is fixedly connected to the cover plates at both ends by being embedded in the above grooves, and the fixing method is simple and reliable; further, a blind hole can be provided at one end of the electrode rod 2 to facilitate positioning when installing the electrode rod 2;

[0052] The ball mill body 1 is fixedly connected to the connecting plate 41 through a fixing bracket 14; the fixing bracket 14 is electrically connected to the ball mill body 1; the fixing bracket 14 is connected to the high-voltage power supply through a wire 8; one end of the electrode rod 2 embryo 21 is connected to the high-voltage power supply through the wire 8; in this way, when power is turned on, an electric field will be formed between the outer surface of the electrode rod 2 and the inner wall of the ball mill body;

[0053] Preferably, in this embodiment, the cavity inside the embryo 21 of the electrode rod 2 is cylindrical, which is easy to process and has better consistency. The wear-resistant insulating layer is attached to the surface of the embryo by hot melting. The hollow structure not only increases the diameter of the electrode rod, but also improves the structural strength of the electrode rod.

[0054] Since the embryo 21 of the electrode rod 2 is hollow, the discharge area of ​​the electrode can be increased without significantly increasing the installation weight of the electrode rod 2, thereby reducing the distance between the electrode rod 2 and the discharge area of ​​the inner wall of the ball mill tank, improving the uniformity of the electric field, and at the same time improving the discharge efficiency and increasing the discharge density. The increase in surface area can also effectively reduce the current density per unit area of ​​the electrode surface, thereby extending the service life of the electrode.

[0055] Combined with adjusting the air pressure in the tank, a lower working voltage can be obtained, thereby effectively reducing the concentrated discharge of the high-voltage electrode. The wear-resistant insulating layer 22 coated on the outside of the electrode rod 2 can reduce the electrode loss caused by wear and effectively increase the service life of the electrode rod 2.

[0056] Advantages of the present invention:

[0057] The electrode rod embryo is hollow inside and covered with a wear-resistant insulating layer on the outside, which increases the discharge area and reduces the distance between the electrode and the discharge area on the inner wall of the ball mill. It can reduce the working voltage and effectively reduce the electrode loss caused by concentrated discharge and wear of the high-voltage electrode, thereby extending the service life of the electrode rod. The amplitude and vibration mode of the equipment can be adjusted by adjusting the number of counterweights and the installation angle on the swing arm, so as to adjust to the vibration conditions suitable for the equipment, so that the materials in the ball mill can be mixed more evenly and the reaction is more complete, effectively improving the working efficiency of the high-energy ball mill equipment.

[0058] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the art within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A high-energy dry powder ball milling device, comprising a ball milling jar and a vibrating device, wherein the ball milling jar is fixed on the vibrating device, characterized in that: The ball mill includes a ball mill body, an electrode rod and a valve group; the ball mill body includes a ball mill side wall, a first cover plate and a second cover plate; the two ends of the ball mill side wall are fixedly connected to the first cover plate and the second cover plate respectively; the electrode rod is arranged in the ball mill body, and the two ends thereof are connected to the first cover plate and the second cover plate respectively; the electrode rod includes a wear-resistant insulating layer and an embryo from the outside to the inside; the embryo is hollow inside to form a cavity; the valve group is arranged on the ball mill body and communicated with the inside of the ball mill body; the vibration device includes a mounting platform, a vibration base and an adjustable vibration motor; the adjustable vibration motor is fixedly connected to the mounting platform; the ball mill body is fixed on the mounting platform; the mounting platform and the vibration base are connected by a plurality of elastic components, and the elastic components include a plurality of parallel balancing springs; the adjustable vibration motor includes a swing arm; the rotating axis of the swing arm is perpendicular to the mounting platform; the adjustable vibration motor is a double-output shaft motor, and swing arms are arranged at both ends of its output shaft; and a counterweight is arranged on the swing arm.

2. The high-energy dry powder ball milling equipment according to claim 1, characterized in that: The cavity is a cylindrical cavity.

3. The high-energy dry powder ball milling equipment according to claim 1, characterized in that: The installation platform includes a connecting plate and a structural member; the cross-section of the structural member is in the shape of an inverted "J", including a groove and a mounting component located at the edge of the groove.

4. The high-energy dry powder ball milling equipment according to claim 3, characterized in that: The adjustable vibration motor is arranged in the groove; and the mounting component is fixedly connected to the elastic component.

5. The high-energy dry powder ball milling equipment according to claim 1, characterized in that: The valve group is arranged on the first cover plate or the second cover plate, and comprises a feed valve, a discharge valve and a vacuum valve.

6. The high-energy dry powder ball milling equipment according to claim 5, characterized in that: The feed valve and the discharge valve are respectively located at two ends of the side wall of the ball mill, wherein the feed valve is located higher than the discharge valve.

7. The high-energy dry powder ball milling equipment according to claim 3, characterized in that: The ball mill body is fixedly connected to the connecting plate through a fixing bracket; the fixing bracket is electrically connected to the ball mill body; the fixing bracket is connected to the power supply through a wire; and one end of the embryo body is connected to the power supply through a wire.

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