Nanometer material grinding equipment

Abstract

The utility model relates to nanometer material grinding equipment which comprises an outer barrel, a grinding device, a grinding device, a grinding device body and a grinding device body, the outer barrel is provided with a feeding port and a discharging port, and the outer barrel is internally provided with a grinding medium; the inner cylinder body is arranged in the outer cylinder body and can be arranged in a self-rotation manner; a stirring piece for stirring the grinding medium to move is connected to the peripheral wall of the inner barrel; a material hole communicated with the interior of the inner barrel body is also formed in the peripheral wall of the inner barrel body; the screen drum body is arranged in the inner drum body, and the screen drum body is communicated with the discharging opening; the power part is arranged on the outer cylinder body, and the power output end of the power part extends into the outer cylinder body and is connected to the inner cylinder body. According to the grinding equipment, the power output end of the power part is directly connected to the inner cylinder, so that the power, efficiency and torque loss can be reduced, and the stability is enhanced.

Description

Technical Field

[0001] The present application relates to the technical field of nanomaterial processing, and in particular to a nanomaterial grinding device. Background Art

[0002] Nanoscale structural materials are referred to as nanomaterials for short. In a broad sense, they are a general term for ultrafine granular materials in which at least one dimension in three-dimensional space is in the nanoscale range. There are many types of nanomaterials and their application fields are very wide. Nanomaterials are mostly granular. In the production and processing of nanomaterials, grinding equipment is required to grind them.

[0003] Currently, most grinding equipment on the market uses couplings, belts, etc. to transmit power, which will result in efficiency and torque losses. Because the output end is too long, it is easy to cause unstable transmission, bearings, mechanical seals and other parts are often damaged, and the speed cannot be increased, resulting in low work efficiency. Utility Model Content

[0004] Based on this, a nanomaterial grinding device is provided, which can reduce power, efficiency, and torque losses and enhance stability.

[0005] On the one hand, a nanomaterial grinding device is provided, which includes: an outer cylinder, which is provided with a feed port and a discharge port, and the outer cylinder is filled with grinding media; an inner cylinder, which is arranged inside the outer cylinder and can rotate; a stirring member for stirring the grinding media is connected to the outer peripheral wall of the inner cylinder; a material hole connected to the inner peripheral wall of the inner cylinder; a sieve cylinder, which is arranged inside the inner cylinder, and the sieve cylinder and the discharge port are connected; a power part, which is arranged on the outer cylinder, and the power output end of the power part extends into the outer cylinder and is connected to the inner cylinder.

[0006] Optionally, the grinding equipment further includes a vibrating part, which is provided on the outer cylinder, and a vibrating end of the vibrating part extends into the interior of the sieve cylinder.

[0007] Optionally, the vibration part includes an ultrasonic generator.

[0008] Optionally, the outer cylinder is arranged horizontally, and the outer cylinder, the inner cylinder, the screen cylinder, the vibration part and the power part are arranged coaxially.

[0009] Optionally, a detachable movable end cover is provided at one end of the outer cylinder, the end of the screen cylinder is connected to the inner side of the movable end cover, the vibrating part is provided on the outer side of the movable end cover; and the power part is provided on the other end of the outer cylinder.

[0010] Optionally, the outer periphery of the outer cylinder is further provided with a jacket, and the jacket is provided with a coolant inlet and a coolant outlet connected to the interior thereof.

[0011] Optionally, a grading plate is further provided in the jacket, and the grading plate surrounds the outer circumference of the outer cylinder and extends spirally along the axial direction of the outer cylinder.

[0012] Optionally, the stirring member includes rod pins, which are arranged in a circle around the outer circumference of the outer cylinder and are distributed at intervals along the axial direction of the outer cylinder.

[0013] Optionally, the outer surface of the inner cylinder and the outer surface of the agitator are both provided with a polyurethane layer; and the inner surface of the outer cylinder is provided with a silicon carbide layer.

[0014] Optionally, the grinding equipment also includes a base, on which two first and second tracks arranged in parallel are provided, and a track frame is provided at the bottom of the outer cylinder; the outer cylinder is slidably set on the track frame through a first support frame, and the movable end cover is slidably set on the track frame through a second support frame.

[0015] Beneficial effects:

[0016] First, the nanomaterial grinding equipment uses a permanent magnet AC motor. The motor shaft of the permanent magnet AC motor directly drives the inner cylinder to perform work. There is no power loss from the belt, no instability factor from the coupling, no torque loss, and the sealing performance of the equipment is also very good, thus improving efficiency and stability.

[0017] Second, the ultrasonic generator is used to utilize the resonance principle to prevent the screen cylinder from being blocked and the discharge port from accumulating material.

[0018] Third, the track frame design can realize segmented maintenance. The movable end cover of the outer cylinder can be pulled out separately to repair the screen cylinder and clean the inside; the entire outer cylinder can also be pulled out together to repair the mechanical seal of the permanent magnet AC motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of a nanomaterial grinding device according to an embodiment;

[0020] Figure 2 A schematic cross-sectional view of a nanomaterial grinding device according to an embodiment;

[0021] Figure 3 Schematic diagram of the structure of the inner cylinder in one embodiment.

[0022] Figure numerals: 1. Outer cylinder; 11. Feed port; 12. Discharge port; 13. Movable end cover; 131. Cleaning port; 2. Inner cylinder; 21. Agitator; 211. Rod pin; 22. Material hole; 3. Screen cylinder; 4. Power unit; 41. Mechanical seal; 5. Vibration unit; 6. Jacket; 61. Coolant inlet; 62. Coolant outlet; 63. Classifying plate; 7. Polyurethane layer; 8. Silicon carbide layer; 9. Base; 91. Track frame; 92. First support frame; 93. Second support frame; 931. Roller; 101. Collection box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] It should be noted that the illustrations provided in this embodiment only illustrate the basic concept of the present application in a schematic manner. Therefore, the illustrations only show components related to the present application and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0025] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not intended to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modifications, changes in proportional relationships, or adjustments in size, without affecting the efficacy and objectives that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0026] The directions or positional relationships indicated in this specification, such as "upper," "lower," "left," "right," "center," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential," are based on the directions or positional relationships shown in the accompanying drawings and are intended solely for the purpose of simplifying the description. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] An embodiment of the present application provides a nanomaterial grinding device, in which the power output end of the power unit directly acts on the inner cylinder, causing the inner cylinder to rotate within the outer cylinder. While achieving nanomaterial grinding, the power unit has no power loss from the belt, no instability factors from the coupling, no torque loss, and the sealing of the equipment is also very good, thereby improving both efficiency and stability.

[0028] The following is a detailed description of a nanomaterial grinding device provided in this embodiment. Figure 1 、 Figure 2 As shown, the grinding equipment includes: an outer cylinder 1, an inner cylinder 2, a screen cylinder 3 and a power unit 4. The outer cylinder 1 is provided with a feed port 11 and a discharge port 12. The outer cylinder 1 is filled with grinding media such as inorganic zirconium beads. The nanomaterial to be ground is added to the outer cylinder 1 through the feed port 11, the nanomaterial is ground by the grinding media, and the ground nanomaterial is discharged through the discharge port 12. The inner cylinder 2 is arranged inside the outer cylinder 1 and can be rotated. The outer peripheral wall of the inner cylinder 2 is connected to a stirring member 21 for stirring the grinding media. The outer peripheral wall of the inner cylinder 2 is also provided with a material hole 22 (such as Figure 3 The sieve cylinder 3 is arranged inside the inner cylinder 2, and the sieve cylinder 3 is connected to the discharge port 12; the power unit 4 is arranged on the outer cylinder 1, and the power output end of the power unit 4 extends into the outer cylinder 1 and is connected to the inner cylinder 2.

[0029] In this embodiment, before grinding, the nanomaterial is first added to a solvent such as ethanol and stirred to obtain a wet slurry for wet grinding; grinding media is added to the interior of the outer cylinder 1, and the inner cylinder 2 is driven to rotate by the power unit 4. During the rotation, the agitator 21 will stir the grinding media, causing the grinding media to move disorderly in the outer cylinder 1 and then grind the large particles of nanomaterial. During the grinding process, the large particles of nanomaterial will not fall off due to the large centrifugal force. When they are ground into small particles, the centrifugal force they receive is small, and they will fall off and fall off. The nanomaterials are screened through the material hole 22 and then enter the sieve cylinder 3, and the ground nanomaterials are screened through the sieve cylinder 3. The screened nanomaterials can be discharged from the discharge port 12, and the nanomaterials remaining on the sieve cylinder 3 will fall back into the outer cylinder 1 to continue grinding; since the power output end of the power unit 4 is directly connected to the inner cylinder 2, that is, the power unit 4 directly drives the inner cylinder 2 to do work, there is no power loss of the belt, no instability factor of the coupling, no torque loss, and the sealing of the equipment is also very good, and the efficiency and stability are improved.

[0030] Please continue to refer to Figure 1 、 Figure 2 As shown, in this embodiment, it should be noted that the grinding equipment further includes a vibration part 5 , which is provided on the outer cylinder 1 , and a vibration end of the vibration part 5 extends into the interior of the sieve cylinder 3 .

[0031] In some embodiments, the flow rate of the nanomaterial entering the outer cylinder 1 is unstable and the particle size is uneven, often resulting in blockage at the sieve cylinder 3. At the same time, the material often agglomerates into lumps at the discharge port 12, blocking the discharge port 12. Therefore, in this embodiment, by introducing the vibration unit 5, the particles on the sieve cylinder 3 can be effectively bounced off, and the discharge port 12 is not easily agglomerated, which can extend the cleaning cycle by more than double. Preferably, the vibration unit 5 includes an ultrasonic generator. Using the ultrasonic generator, by utilizing the principle of resonance, it is possible to prevent the sieve cylinder 3 from being blocked and the discharge port 12 from accumulating material.

[0032] In this embodiment, it should also be noted that the outer cylinder 1 is arranged horizontally, and the outer cylinder 1, the inner cylinder 2, the screen cylinder 3, the vibration part 5 and the power part 4 are arranged coaxially.

[0033] In some embodiments, the outer cylinder 1 is set to be horizontal, that is, placed horizontally, to facilitate the subsequent pulling and pulling operation of the outer cylinder 1 in the horizontal direction. At the same time, the outer cylinder 1, the inner cylinder 2, the screen cylinder 3, the vibration part 5 and the power part 4 are coaxially arranged, which is more regular in installation operation and has a reasonable layout. At the same time, the coaxial arrangement between the power part 4 and the inner cylinder 2 facilitates driving the inner cylinder 2 to rotate.

[0034] In other embodiments, a removable movable end cap 13 is provided at one end of the outer cylinder 1. The movable end cap 13 can be removably connected to the end of the outer cylinder 1 by means of bolts or the like. Thus, by removing the movable end cap 13, the interior of the outer cylinder 1 can be cleaned, and it is also convenient to install or remove various parts inside the outer cylinder 1. The end of the sieve cylinder 3 is connected to the inner side of the movable end cap 13, and the vibrating part 5 is provided on the outer side of the movable end cap 13. Therefore, by removing the movable end cap 13, the movable end cap 13 can be operated to pull the sieve cylinder 3 out from the interior of the inner cylinder 2, and then it is convenient to clean the sieve cylinder 3 from the outside. At the same time, the vibrating part 5 can also be pulled out simultaneously with the sieve cylinder 3.

[0035] Of course, the discharge port 12 is also provided on the movable end cover 13 to facilitate communication with the screen cylinder 3 .

[0036] The movable end cover 13 is also provided with a cleaning port 131, which is located near the bottom of the movable end cover 13. The cleaning port 131 allows operations such as cleaning and replacing the grinding media inside the outer cylinder 1. A collection box 101 is also provided at the bottom of the outer cylinder 1 to collect debris cleaned out from the cleaning port 131.

[0037] In other embodiments, the other end of the outer cylinder 1 is closed, and the power unit 4 is disposed on this closed end. Preferably, the power unit 4 is a permanent magnet AC motor, the motor shaft of which extends through this end of the outer cylinder 1 and into the interior, where it is connected to the inner cylinder 2. This allows the inner cylinder 2 to rotate directly driven by the motor shaft of the permanent magnet AC motor, eliminating power loss from the belt, instability from the coupling, and torque loss. More preferably, a mechanical seal 41 is provided at the connection between the motor shaft of the permanent magnet AC motor and the outer cylinder 1.

[0038] Of course, the feed port 11 is provided on the closed end of the outer cylinder 1 , and the nanomaterial to be ground can be added into the inner part of the outer cylinder 1 through the feed port 11 .

[0039] Please refer to Figure 2 、 Figure 3 As shown, in this embodiment, it should be noted that the stirring member 21 includes rod pins 211, which are arranged in a circle around the outer circumference of the inner cylinder 2 and are spaced apart along the axis of the inner cylinder 2. By such an arrangement, the grinding medium can be stirred over a large area.

[0040] In some embodiments, the outer surface of the inner cylinder 2 and the outer surface of the agitator 21 are both provided with a polyurethane layer 7. The use of the polyurethane layer 7 can prevent the introduction of impurities during the grinding process of the nanomaterial. At the same time, the inner surface of the outer cylinder 1 is provided with a silicon carbide layer 8. The silicon carbide layer 8 is wear-resistant and has high strength, and does not introduce impurities. Since the grinding medium rotates within the outer cylinder 1 through the stirring action of the rod pin 211, it will then collide with the inner wall of the outer cylinder 1. The provision of the silicon carbide layer 8 can improve the strength of the outer cylinder 1 and also prevent the introduction of impurities during the grinding process.

[0041] Please refer to Figure 1 、 Figure 2 As shown, in this embodiment, it should also be noted that the grinding equipment will generate heat during the grinding process, so the grinding equipment needs to be cooled.

[0042] In some embodiments, a jacket 6 is provided around the outer periphery of the outer cylinder 1, and the jacket 6 is provided with a coolant inlet 61 and a coolant outlet 62 communicating with the interior thereof. Coolant is injected into the jacket 6 through the coolant inlet 61, and the coolant removes the heat generated by the outer cylinder 1 and flows out through the coolant outlet 62, thereby achieving heat dissipation for the outer cylinder 1. Preferably, the jacket 6 is further provided with a grading plate 63, which surrounds the outer periphery of the outer cylinder 1 and extends helically along the axis of the outer cylinder 1. The provision of the grading plate 63 lengthens the flow path of the coolant, prolongs the heat exchange time with the outer cylinder 1, and thereby improves the cooling effect.

[0043] Please continue to refer to Figure 1 、 Figure 2 As shown, in this embodiment, it should also be noted that the grinding equipment also includes a base 9, the outer cylinder 1 and the power unit 4 are both installed on the base 9, and a track frame 91 is provided on the base 9, and the track frame 91 extends along the axial direction of the outer cylinder 1.

[0044] The jacket 6 on the outside of the outer cylinder 1 is slidably set on the track frame 91 through the first support frame 92. The first support frame 92 can be positioned on the track frame 91 by bolts or the like. When the outer cylinder 1 and the power unit 4 need to be separated for maintenance operations, the positioning between the first support frame 92 and the track frame 91 is released, and the outer cylinder 1 and the jacket 6 can be slid along the track frame 91 as a whole, thereby achieving separation from the power unit 4, making it easier to maintain the mechanical seal 41 of the power unit 4.

[0045] Similarly, the movable end cover 13 is slidably set on the track frame 91 through the second support frame 93. Preferably, a roller 931 is provided at the bottom of the second support frame 93, and the second support frame 93 can also be positioned on the track frame 91 by bolts or the like. When it is necessary to inspect the screen cylinder 3 and the inner cylinder 2 separately, the positioning between the second support frame 93 and the track frame 91 can be released, and the movable end cover 13 at the left end of the outer cylinder 1 can be pulled out separately. When the movable end cover 13 is pulled, the screen cylinder 3 will be pulled out from the inner cylinder 2, which is convenient for cleaning the screen cylinder 3 and the interior of the inner cylinder 2 at the same time.

[0046] Through the cooperation of the first support frame 92 and the second support frame 93 with the track frame 91, segmented maintenance can be achieved, and the screen cylinder 3 and the inner cylinder 2, which are the most inspected, can be easily disassembled without the participation of large-scale lifting equipment, reducing the labor by more than half.

[0047] The implementation principle of this embodiment is as follows: when the nanomaterial needs to be ground, the material is added into the outer cylinder 1 through the feed port 11, and then the power unit 4 is started, and the power output end of the power unit 4 directly drives the inner cylinder 2 to rotate in the outer cylinder 1. During the rotation, the agitator 21 will stir the grinding medium on the bottom of the outer cylinder 1, and the grinding medium will grind the nanomaterial during the stirring process. The small particles of nanomaterial after grinding are subjected to less centrifugal force and will then fall down and then fall into the screen cylinder 3 through the material hole 22. The fallen nanomaterial is screened by the screen cylinder 3, and the screened nanomaterial is discharged from the discharge port 12.

[0048] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A nano material grinding device, characterized in that: The grinding equipment comprises: An outer cylinder (1), wherein the outer cylinder (1) is provided with a feed inlet (11) and a discharge outlet (12), and the outer cylinder (1) is filled with grinding media; An inner cylinder (2), the inner cylinder (2) being arranged inside the outer cylinder (1) and being rotatable; a stirring member (21) for stirring the grinding medium is connected to the outer peripheral wall of the inner cylinder (2); a material hole (22) communicating with the interior of the inner cylinder (2) is also provided on the outer peripheral wall of the inner cylinder (2); A sieve cylinder body (3), wherein the sieve cylinder body (3) is arranged inside the inner cylinder body (2), and the sieve cylinder body (3) is connected to the discharge port (12); A power unit (4), wherein the power unit (4) is arranged on the outer cylinder (1), and a power output end of the power unit (4) extends into the outer cylinder (1) and is connected to the inner cylinder (2).

2. The nano material grinding device according to claim 1, characterized in that: The grinding device further comprises a vibrating part (5), wherein the vibrating part (5) is arranged on the outer cylinder (1), and a vibrating end of the vibrating part (5) extends into the interior of the screen cylinder (3).

3. The nano material grinding device according to claim 2, characterized in that: The vibration part (5) includes an ultrasonic generator.

4. The nano material grinding device according to claim 2, characterized in that: The outer cylinder (1) is arranged transversely, and the outer cylinder (1), the inner cylinder (2), the screen cylinder (3), the vibration part (5) and the power part (4) are arranged coaxially.

5. The nano material grinding device according to claim 4, characterized in that: A detachable movable end cover (13) is provided at one end of the outer cylinder (1), an end of the screen cylinder (3) is connected to the inner side of the movable end cover (13), and the vibrating part (5) is provided on the outer side of the movable end cover (13); The power unit (4) is arranged on the other end of the outer cylinder (1).

6. The nano material grinding device according to claim 5, characterized in that: The outer periphery of the outer cylinder (1) is also provided with a jacket (6), and the jacket (6) is provided with a cooling liquid inlet (61) and a cooling liquid outlet (62) which are connected to the interior thereof.

7. The nano material grinding device according to claim 6, characterized in that: A grading sheet (63) is also provided in the jacket (6), and the grading sheet (63) surrounds the outer circumference of the outer cylinder (1) and is spirally extended along the axial direction of the outer cylinder (1).

8. The nano material grinding device according to claim 1, characterized in that: The stirring member (21) comprises rod pins (211), which are arranged in a circle around the outer circumference of the outer cylinder (1) and are distributed at intervals along the axial direction of the outer cylinder (1).

9. The nano material grinding device according to claim 1, characterized in that: The outer surface of the inner cylinder (2) and the outer surface of the stirring member (21) are both provided with a polyurethane layer (7); and the inner surface of the outer cylinder (1) is provided with a silicon carbide layer (8).

10. The nano material grinding device according to claim 5, characterized in that: The grinding device further comprises a base (9), and a track frame (91) is arranged on the base (9); The outer cylinder (1) is slidably disposed on the track frame (91) via a first support frame (92), and the movable end cover (13) is slidably disposed on the track frame (91) via a second support frame (93).

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