Ball milling device based on superfine silver powder processing
By designing the feeding assembly and motor drive system of the ball mill device, the continuous preparation of silver powder is achieved, and the problem of fixed quality and inability to transfer quantitatively in the prior art is solved, ensuring the consistency of silver powder quality.
Patent Information
- Application Number
- CN202420890562.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-26
AI Technical Summary
In the existing silver powder processing technology, the silver source transfer method is one-time transfer, resulting in a fixed quality of a single entry silver source, which is unable to achieve quantitative transfer and continuous preparation.
A ball milling device based on ultrafine silver powder processing is designed, using feeding components and motor-driven system, to achieve uniform material distribution and quantitative transmission of block silver powder through the feeding box and the feeding leaf, combining the steel balls in the ball mill and The grinding action of the inner lining plate forms particulate silver powder, and the grinding and crushing process is completed through the discharge tube.
The continuous preparation of silver powder is achieved, ensuring the consistency and quantitative quality of silver powder preparation, and solving the problem of limited quality of single-time silver source preparation.
Smart Images
Figure CN222175941U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silver powder processing, in particular to a ball milling device based on ultrafine silver powder processing. Background Art
[0002] Granular silver powder is prepared by mechanical ball milling and chemical reduction. The mechanical ball milling method is usually to use AgNO3 or Ag2O as the silver source, and to reduce it into spherical silver particles of different particle sizes by using a chemical precipitation method and a reducing agent under the protection of an additive or a dispersant. Then, by controlling parameters such as the ball-to-material ratio, ball milling aid, solid-liquid ratio and ball milling time, the spherical silver particles are ball milled by mechanical ball milling to obtain granular silver powder. The ball milling process is actually a process in which the grinding balls move in the tank body and fall from the highest point of the tank body, exerting a "beating and smashing" effect on the block silver powder below the tank body, causing the block to deform into granular silver powder.
[0003] During the ball milling process, when the crushed silver source is transferred to the ball mill, it is mostly transferred once, resulting in a fixed mass of the silver source entering at a time and the inability to transfer quantitatively, that is, the mass of the silver powder prepared from the silver source at a time is limited, and the continuity of the silver powder preparation cannot be achieved;
[0004] In view of the above technical defects, a solution is now proposed. Utility Model Content
[0005] The utility model aims to provide a ball milling device based on ultrafine silver powder processing to solve the problem that the mass of the silver source entering at a single time is fixed and cannot be quantitatively transferred due to the one-time transfer method.
[0006] The purpose of the utility model can be achieved through the following technical solutions: a ball milling device based on ultrafine silver powder processing, comprising an immersion box, a ball milling jar is rotatably mounted on the immersion box, an opening is provided at one end of the ball milling jar, a discharge port is provided in the middle of the other end of the ball milling jar, a feed box connected to the ground is provided at one end of the ball milling jar, a feeding assembly is provided above the feed box, and the discharge end of the feeding assembly is connected to the opening at one end of the ball milling jar; the feeding assembly comprises a distribution box and a material stripping blade, the distribution box is provided at the top of the feed box, the material stripping blade is rotatably mounted in the distribution box, and the end of the material stripping blade is in contact with the inner wall of the distribution box.
[0007] Preferably, an inner guide ring is installed at the end of the ball mill near the feed box, and an outer guide ring is installed at the end of the feed box near the ball mill, and an annular bearing is installed between the outer guide ring and the inner guide ring. A plurality of mounting rods are installed on the inner side of the opening of the ball mill, and a plurality of spreading plates are connected between the inner sides of the mounting rods. Some of the spreading plates are umbrella-shaped and their ends extend into the feed box, and the ends of the spreading plates are in contact with the inner wall of the feed box.
[0008] Preferably, the inner wall of the ball mill is installed with a plurality of lining plates arranged in an arranged manner, an outer gear ring is installed on the outer side of one end of the ball mill away from the feed box, a support seat is installed in the middle of the outer end of the immersion box, and the ball mill rotates through the support seat and the annular bearing.
[0009] Preferably, a second motor is installed on one side of the outer end of the immersion box, the output end of the second motor is connected to a driving gear, the driving gear is meshed with an outer gear ring, and a discharge pipe is installed outside the ball mill corresponding to the discharge port.
[0010] Preferably, the feeding assembly also includes a motor 1, the output end of the motor 1 extends into the distribution box and is rotatably connected to the material dispensing blade, a feed port is provided at the upper end of the distribution box away from the side of the feed box, the feed port is tangent to the internal cavity of the distribution box, a connecting port is provided on the top of the feed box, and the distribution box is connected to the feed box through the connecting port.
[0011] Preferably, an observation window is embedded in the middle of one end of the distribution box away from the motor, and the observation window is a transparent glass window.
[0012] The beneficial effects of the utility model are as follows:
[0013] (1) In the utility model, the block silver powder is uniformly fed into the ball mill through the feeding assembly structure. The block silver powder entering the ball mill is subjected to the continuous rotation and rolling of the internal steel balls to form granular silver powder. The block silver powder and the steel balls in the ball mill adhere to the inner wall under the combined action of inertial friction and the inner lining plate, and are lifted up as the ball mill rotates continuously. When the ball mill is lifted to a certain height, the block silver powder and the steel balls are thrown down by gravity, and the block silver powder is crushed by the collision of the steel balls. The block silver powder and the steel balls will make a circular motion of rising and falling in the continuously rotating ball mill. At the same time, the block silver powder will collide with each other during the rising process, which has a grinding effect and finally forms all granular silver powder. The impact force generated when the material falls and the airflow in the ball mill will generate axial thrust, which will flow the fine granular silver powder to the discharge port and be discharged from the discharge pipe, thus completing the grinding and crushing process.
[0014] (2) Also, by starting the motor 1, the motor 1 drives the material-dispensing blade to rotate, so that the blocks above the material-dispensing box are evenly distributed by the material-dispensing blade and transferred to the connecting port, and then fall downward into the feed box through the connecting port; at the same time, the motor 2 drives the ball mill to rotate by means of the meshing of the main gear and the outer gear ring, and the ball mill can also drive the spreading plate to rotate, that is, the blocks falling downward through the connecting port are spread by the spreading plate and evenly spread into the ball mill, and the ball milling process is completed by feeding in a quantitative manner and evenly spreading the materials into the ball mill. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings;
[0016] Figure 1 It is a structural stereogram of the entire utility model;
[0017] Figure 2 It is a rear view structural schematic diagram of the utility model;
[0018] Figure 3 It is a schematic diagram of the disassembly of the main structure of the utility model;
[0019] Figure 4 It is a cutaway schematic diagram of a part of the structure of the utility model;
[0020] Figure 5 It is a schematic diagram of the structural disassembly of the quantitative feeding component of the utility model;
[0021] Figure 6 It is a cross-sectional schematic diagram of the utility model.
[0022] Legend: 1. Immersion box; 2. Ball mill; 3. Feed box; 4. Distribution box; 5. Feed port; 6. Observation window; 7. Connecting port; 8. Outer guide ring; 9. Annular bearing; 10. Inner guide ring; 11. Outer gear ring; 12. Discharge port; 13. Motor 1; 14. Mounting rod; 15. Spreading plate; 16. Inner lining plate; 17. Discharge pipe; 18. Motor 2; 19. Dispensing blade; 20. Driving gear; 21. Support seat. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] Embodiment: This embodiment is used to solve the problem that the mass of the silver source entering at a time is fixed and cannot be quantitatively transferred due to the one-time transfer method.
[0025] See also Figure 1 - Figure 6As shown, this embodiment is a ball milling device based on ultrafine silver powder processing, including an immersion box 1, a ball mill 2 is rotatably mounted on the immersion box 1, one end of the ball mill 2 is provided with an opening, and the other end of the ball mill 2 is provided with a discharge port 12 in the middle, one end of the ball mill 2 is provided with a feed box 3 connected to the ground, and a feeding assembly is provided above the feed box 3, and the discharge end of the feeding assembly is connected to the opening at one end of the ball mill 2; the feeding assembly includes a distribution box 4 and a material paddle 19, the distribution box 4 is provided on the top of the feed box 3, the material paddle 19 is rotatably mounted in the distribution box 4, and the end of the material paddle 19 is in contact with the inner wall of the distribution box 4;
[0026] An inner guide ring 10 is installed at the end of the ball mill 2 near the feed box 3, and an outer guide ring 8 is installed at the end of the feed box 3 near the ball mill 2. An annular bearing 9 is installed between the outer guide ring 8 and the inner guide ring 10. A plurality of mounting rods 14 are installed on the inner side of the opening of the ball mill 2. A plurality of spreading plates 15 are connected between the inner sides of the mounting rods 14. The plurality of spreading plates 15 are umbrella-shaped and the ends extend into the feed box 3. The ends of the spreading plates 15 are in contact with the inner wall of the feed box 3. The provision of the spreading plates 15 is to obtain a uniform material-splitting effect when the block silver powder in the feed box 3 enters the ball mill 2, forming a splashing feeding effect so as to form a sufficient collision with the steel balls of different diameters in the ball mill 2.
[0027] The inner wall of the ball mill 2 is installed with a plurality of inner lining plates 16 arranged and distributed, an outer gear ring 11 is installed on the outer side of one end of the ball mill 2 away from the feed box 3, a support seat 21 is installed in the middle of the outer end of the immersion box 1, and the ball mill 2 is rotated by the support seat 21 and the annular bearing 9. The ball mill 2 is supported by the annular bearing 9 and the support seat 21 and forms a stable rotation;
[0028] See also Figure 1 - Figure 3 As shown, the basic principle is that the bulk silver powder is uniformly fed into the ball mill 2 through the feeding assembly structure, and the bulk silver powder entering the ball mill 2 is subjected to the continuous rotation and rolling of the internal steel balls (grinding media) to form granular silver powder, wherein the bulk silver powder and the steel balls in the ball mill 2 adhere to the inner wall under the combined action of inertial friction and the inner lining plate 16, and are lifted up as the ball mill 2 rotates continuously. When the ball mill 2 is lifted to a certain height, the bulk silver powder and the steel balls are thrown down by gravity, and the bulk silver powder is crushed by the collision of the steel balls, and the bulk silver powder and the steel balls will make a circular motion of rising and falling in the continuously rotating ball mill 2, and the bulk silver powder will also collide with each other during the rising process, which has a grinding effect, and finally all of them are formed into granular silver powder; and the impact force generated when the material falls and the airflow in the ball mill 2 will generate axial thrust, so that the fine granular silver powder flows to the discharge port 12 and is discharged from the discharge pipe 17, so that the grinding and crushing process is completed.
[0029] A motor 2 18 is installed at one side of the outer end of the immersion box 1, and a driving gear 20 is connected to the output end of the motor 2 18, and the driving gear 20 is meshed with the outer gear ring 11. A discharge pipe 17 is installed outside the ball mill 2 corresponding to the discharge port 12;
[0030] The feeding assembly also includes a motor 13, the output end of the motor 13 extends into the material distribution box 4 and is rotatably connected to the material dispensing blade 19, the upper end of the material distribution box 4 away from the feeding box 3 is provided with a feeding port 5, the feeding port 5 is tangent to the internal cavity of the material distribution box 4, the top of the feeding box 3 is provided with a connecting port 7, the material distribution box 4 is connected to the feeding box 3 through the connecting port 7, and an observation window 6 is embedded in the middle of the end of the material distribution box 4 away from the motor 13, and the observation window 6 is a transparent glass window, through which the material dispensing observation of the material dispensing blade 19 in the material distribution box 4 is completed;
[0031] See also Figure 1 - Figure 6 As shown, in order to solve the problem that the mass of the silver source entering at a time is fixed and cannot be transferred quantitatively due to the one-time transfer method, the specific solution is as follows: the crushed blocks are put into the distribution box 4 through the feed port 5, and the motor 13 is started synchronously. The motor 13 drives the material-dispensing blade 19 to rotate, so that the blocks above the distribution box 4 are evenly distributed by the material-dispensing blade 19 and transferred to the connecting port 7, and fall downward into the feed box 3 through the connecting port 7; at the same time, the motor 2 18 drives the ball mill 2 to rotate through the meshing of the main gear 20 and the outer gear ring 11, and the ball mill 2 can also drive the spreading plate 15 to rotate, that is, the blocks falling downward through the connecting port 7 are spread by the spreading plate 15, and are evenly scattered in the ball mill 2, and the ball milling process is completed in a quantitative manner. The purpose is to solve the problem of limited mass of silver powder prepared from a single silver source and achieve continuity in the preparation of silver powder.
[0032] In summary: the ball mill device can not only produce granular silver powder by complete collision between grinding media and blocks, but also can form final granular silver powder by collision and grinding of initial granular silver powder with each other. In the process of grinding and crushing, uniform quantitative feeding can be completed to ensure the continuity of silver powder preparation, thus solving the problem of limited quality of silver powder prepared from a single silver source.
[0033] The above contents are merely examples and explanations of the structure of the present invention. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.
Claims
1. A ball milling device for processing ultrafine silver powder, comprising an immersion box (1), on which a ball milling jar (2) is rotatably mounted, one end of the ball milling jar (2) is provided with an opening, and the other end of the ball milling jar (2) is provided with a discharge port (12) in the middle, characterized in that: A feed box (3) connected to the ground is arranged at one end of the ball mill (2); a feeding assembly is arranged above the feed box (3); a discharge end of the feeding assembly is communicated with an opening at one end of the ball mill (2); the feeding assembly comprises a distribution box (4) and a material-discharging blade (19); the distribution box (4) is arranged at the top of the feed box (3); the material-discharging blade (19) is rotatably installed in the distribution box (4); and the end of the material-discharging blade (19) is in contact with the inner wall of the distribution box (4).
2. The ball milling device based on ultrafine silver powder processing according to claim 1 is characterized in that: An inner guide ring (10) is installed at the end of the ball mill (2) close to the feed box (3), and an outer guide ring (8) is installed at the end of the feed box (3) close to the ball mill (2). An annular bearing (9) is installed between the outer guide ring (8) and the inner guide ring (10). A plurality of mounting rods (14) are installed on the inner side of the opening of the ball mill (2), and a plurality of spreading plates (15) are connected between the inner sides of the mounting rods (14). The plurality of spreading plates (15) are umbrella-shaped and their ends extend into the feed box (3). The ends of the spreading plates (15) are in contact with the inner wall of the feed box (3).
3. The ball milling device based on ultrafine silver powder processing according to claim 2 is characterized in that: The inner wall of the ball mill (2) is provided with a plurality of inner lining plates (16) arranged in an arranged manner, an outer gear ring (11) is provided on the outer side of one end of the ball mill (2) away from the feed box (3), a support seat (21) is provided in the middle of the outer end of the immersion box (1), and the ball mill (2) is rotated via the support seat (21) and the annular bearing (9).
4. The ball milling device based on ultrafine silver powder processing according to claim 3 is characterized in that: A second motor (18) is installed on one side of the outer end of the immersion box (1), and the output end of the second motor (18) is connected to a driving gear (20), and the driving gear (20) is meshed with an outer gear ring (11). A discharge pipe (17) is installed outside the ball mill (2) corresponding to the discharge port (12).
5. The ball milling device based on ultrafine silver powder processing according to claim 1 is characterized in that: The feeding assembly also includes a motor 1 (13), the output end of the motor 1 (13) extends into the distribution box (4) and is rotatably connected to the material dispensing blade (19), the upper end of the distribution box (4) away from the feed box (3) is provided with a feed port (5), the feed port (5) is tangentially arranged with the internal cavity of the distribution box (4), the top of the feed box (3) is provided with a connecting port (7), and the distribution box (4) is connected to the feed box (3) through the connecting port (7).
6. The ball milling device based on ultrafine silver powder processing according to claim 5 is characterized in that: An observation window (6) is embedded and installed in the middle of one end of the material distribution box (4) away from the motor (13), and the observation window (6) is a transparent glass window.