A new type of aluminum silver paste ball mill outlet cover filter screen device

Abstract

The utility model discloses a novel aluminum silver paste ball mill outlet cover filter screen device in the technical field of chemical equipment, include: outlet cover body is fixed in the ball mill discharge port, detachably fixed in the inside of outlet cover body, the steel frame is detachably fixed in the material side of filter steel screen, wherein, the steel frame includes the outer periphery ring body, the center tube and a plurality of connecting rods, and the outer periphery ring body is coaxially arranged with the center tube, and a plurality of connecting rods are radially fixed between the outer periphery ring body and the center tube, still include: first airflow subassembly, be located in the material side of filter steel screen, be used to the material side from the edge to the center of filter steel screen and blow, second airflow subassembly, be located in the back material side of filter steel screen, be used for the back material side vertical blow of filter steel screen. The device replaces the traditional outlet machine piece through filter steel screen and steel frame, improves the material pass rate, and adopts the combination mode of airflow subassembly and material scraping subassembly to solve the material blockage problem.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a novel aluminum silver paste ball mill cover filter device. Background Technology

[0002] Ball mills are widely used for the fine grinding of materials in the production of high-value-added materials such as aluminum silver paste, conductive inks, coatings, and lithium battery pastes. After grinding, the slurry needs to be discharged from the ball mill, while the grinding media (such as zirconia beads, glass beads, etc.) are retained in the grinding chamber to achieve solid-liquid separation and protect downstream equipment.

[0003] Traditional discharge methods typically employ a discharge plate structure with slits on the discharge cover. This structure utilizes the principle that the slit width is smaller than the diameter of the grinding beads to intercept the medium. However, the number of slits on the discharge plate is limited, resulting in a small effective filtration area and a slow discharge speed. This is especially problematic when processing high-viscosity aluminum silver paste, where the material tends to accumulate in the slits, forming a filter cake that causes localized blockages, further reducing discharge efficiency and even leading to problems such as incomplete discharge and severe residue.

[0004] To address these issues, a novel aluminum silver paste ball mill cover filter device is provided. Utility Model Content

[0005] The purpose of this invention is to provide a novel aluminum silver paste ball mill outlet cover filter device, which solves the problems of easy clogging of the filter screen, poor flowability, and poor material discharge of existing outlet cover devices when high-viscosity materials are discharged from the ball mill.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A novel aluminum silver paste ball mill cover filter device includes:

[0008] The main body of the outlet cover is fixedly installed at the discharge port of the ball mill;

[0009] A steel frame is detachably and fixedly installed on the inner side of the outlet cover body;

[0010] The filter mesh is detachably and fixedly installed on the material-facing side of the steel frame;

[0011] The steel frame includes an outer circumferential body, a central cylinder, and multiple connecting rods. The outer circumferential body and the central cylinder are coaxially arranged, and the multiple connecting rods are radially fixed between the outer circumferential body and the central cylinder.

[0012] Also includes:

[0013] The first airflow assembly is located on the material-facing side of the filter steel mesh and is used to blow air from the edge to the center of the material-facing side of the filter steel mesh.

[0014] The second airflow assembly is located on the back side of the filter steel mesh and is used to vertically blow air onto the back side of the filter steel mesh.

[0015] As a further optimization of this utility model, the steel frame is provided with a stepped platform structure for positioning and installing the filter steel mesh on the material receiving side, and a pressure plate for pressing the filter steel mesh, with a sealing ring between the pressure plate and the filter steel mesh; the mesh size of the filter steel mesh is smaller than the minimum diameter of the grinding media in the ball mill.

[0016] As a further optimization of this utility model, the first airflow assembly includes a first annular pipe and a plurality of first air outlet pipes evenly arranged circumferentially on the first annular pipe; the first annular pipe is disposed in an annular groove opened on the outer circumference and is connected to an external air source.

[0017] As a further optimization of this utility model, the air outlet direction of the first air outlet pipe is towards the material-facing surface of the filter steel mesh, and the angle between its axis and the plane where the filter steel mesh is located is 30°-45°.

[0018] As a further optimization of this utility model, the second airflow assembly includes a second annular pipe and a plurality of air supply pipes arranged radially inside the second annular pipe; the second annular pipe is disposed in an annular groove opened on the outer circumference and is connected to an external air source, and each of the air supply pipes is correspondingly embedded in an axial groove opened on the connecting rod, and each of the air supply pipes is provided with a plurality of second air outlet pipes evenly distributed along its length direction.

[0019] As a further optimization of this utility model, it also includes a scraping assembly, which includes a first scraping unit for cleaning the material-facing side of the filter steel mesh and sealing the first airflow assembly, a second scraping unit for cleaning the material-receiving side of the filter steel mesh and sealing the second airflow assembly, and a driving component for driving the first scraping unit and the second scraping unit to rotate synchronously; the driving component is disposed inside the central cylinder.

[0020] As a further optimization of this utility model, the first scraping unit includes a first elastic scraper and a closed ring body fixedly disposed at both ends of the first elastic scraper; the closed ring body is disposed on the inner side of the outer peripheral body and fits tightly therewith, and the closed ring body is provided with an air outlet hole that matches the first air outlet pipe so as to allow the airflow generated by the first airflow assembly to pass through.

[0021] As a further optimization of this utility model, the second scraping unit includes a plurality of second elastic scrapers corresponding one-to-one with the connecting rods; the second elastic scrapers are disposed between the filter steel mesh and the connecting rods and are tightly fitted to both; each second elastic scraper is embedded with a second magnetic block; a first magnetic block is embedded in the corresponding position on the connecting rod; the first magnetic block and the second magnetic block attract each other to position the scraping assembly.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. This utility model improves the material throughput by replacing the traditional discharge plates with a filter steel mesh and steel frame. The steel frame, as a supporting structure, can ensure the stability of the filter steel mesh when the ball mill is working, resist the impact of materials and the collision of grinding media, and solve the problems of small gaps and high customization costs of traditional discharge plates.

[0024] 2. This utility model uses a combination of airflow assembly and scraper assembly to solve the material blockage problem and improve discharge efficiency. The airflow assembly effectively loosens the highly viscous material attached to the mesh by blowing in both directions, significantly improving the material throughput efficiency. The scraper assembly performs physical peeling to remove stubborn filter cake or blockages. In addition, the scraper assembly also has a sealing function when not in operation. By rotating and misaligning, it achieves physical sealing of the first and second air outlet pipes, preventing highly viscous materials from entering the air circuit system. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model from the material receiving side;

[0026] Figure 2 This is a three-dimensional schematic diagram of the backing material side of the overall structure of this utility model;

[0027] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0028] Figure 4 Exploded view of the connection structure between the steel frame and the filter steel mesh of this utility model. Figure 1 ;

[0029] Figure 5 Exploded view of the connection structure between the steel frame and the filter steel mesh of this utility model. Figure 2 ;

[0030] Figure 6 This is a schematic diagram of the structure of the first airflow assembly and the second airflow assembly of this utility model;

[0031] Figure 7 This is a schematic diagram of the scraping assembly structure of this utility model.

[0032] In the picture:

[0033] 1. Machine cover body; 2. Steel frame; 201. Outer circumference; 202. Central cylinder; 203. Connecting rod; 204. First magnetic block; 205. Pressure plate; 3. Filter steel mesh; 4. First airflow assembly; 401. First annular pipe; 402. First air outlet pipe; 5. Second airflow assembly; 501. Second annular pipe; 502. Air supply pipe; 503. Second air outlet pipe; 6. Scraping assembly; 601. First scraping unit; 601a. ​​First elastic scraper; 601b. Closed ring; 601c. Air outlet; 602. Second scraping unit; 602a. Second elastic scraper; 602b. Second magnetic block; 603. Driving component. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] Example 1

[0036] To address the issues of filter clogging, poor flowability, and uneven discharge caused by high-viscosity materials during ball mill discharge from existing outlet cover devices, please refer to [link to relevant documentation]. Figures 1-5 This utility model provides a novel aluminum silver paste ball mill cover filter device, comprising:

[0037] The main body of the outlet cover 1 is fixedly installed at the outlet of the ball mill;

[0038] The steel frame 2 is detachably and fixedly installed on the inside of the outlet cover body 1;

[0039] The filter steel mesh 3 is detachably and fixedly installed on the material-facing side of the steel frame 2;

[0040] The steel frame 2 includes an outer circumferential ring 201, a central cylinder 202, and multiple connecting rods 203. The outer circumferential ring 201 and the central cylinder 202 are coaxially arranged, and the multiple connecting rods 203 are radially fixed between the outer circumferential ring 201 and the central cylinder 202.

[0041] Also includes:

[0042] The first airflow assembly 4 is located on the material-facing side of the filter steel mesh 3 and is used to blow air from the edge to the center of the material-facing side of the filter steel mesh 3.

[0043] The second airflow assembly 5 is located on the back side of the filter steel mesh 3 and is used to vertically blow air onto the back side of the filter steel mesh 3.

[0044] The steel frame 2 has a stepped platform structure on the receiving side for positioning and installing the filter steel mesh 3, and a pressure plate 205 for pressing the filter steel mesh 3. A sealing ring is provided between the pressure plate 205 and the filter steel mesh 3. The filter steel mesh 3 is fixed by the pressure plate 205 and the sealing ring, which is convenient for replacement. The mesh size of the filter steel mesh 3 is smaller than the minimum diameter of the grinding media in the ball mill, so as to effectively intercept the grinding media and allow the slurry to pass through.

[0045] like Figure 6 As shown, the first airflow assembly 4 includes a first annular pipe 401 and a plurality of first air outlet pipes 402 evenly arranged circumferentially on the first annular pipe 401. The first annular pipe 401 is located in an annular groove on the outer peripheral body 201 and is connected to an external air source. The air outlet direction of the first air outlet pipe 402 is towards the material-facing surface of the filter steel mesh 3, and the angle between its axis and the plane where the filter steel mesh 3 is located is 30°-45°. This enhances the blowing effect on the edge area, reduces dead corner areas, and improves cleaning efficiency. Typically, one first air outlet pipe 402 is placed every 15°-30°.

[0046] Compressed air enters the first annular pipe 401 through the air supply pipeline and is ejected through multiple first air outlet pipes 402. Since the first air outlet pipes 402 are aligned with the material-facing surface of the filter steel mesh 3 at an angle of 30°-45°, the ejected airflow forms an oblique shearing air curtain along the surface of the filter steel mesh 3, effectively loosening and blowing away the high-viscosity aluminum silver paste material adhering to the surface of the filter steel mesh 3, preventing it from forming a filter cake or bridging structure. At the same time, since the first annular pipe 401 is embedded in the groove of the outer peripheral ring 201, the overall structure is compact and does not protrude outside the steel frame 2, avoiding material retention or interference with the grinding process inside the ball mill.

[0047] The second airflow assembly 5 includes a second annular pipe 501 and a plurality of air supply pipes 502 arranged radially inside the second annular pipe 501. The second annular pipe 501 is located in an annular groove on the outer peripheral body 201 and is connected to an external air source. Each air supply pipe 502 is correspondingly embedded in an axial groove on the connecting rod 203, and each air supply pipe 502 is provided with a plurality of second air outlet pipes 503 evenly distributed along its length direction.

[0048] Compressed air enters the second annular pipe 501 through the air supply pipeline, and then is distributed to each air delivery pipe 502 arranged axially along the connecting rod 203. The gas flows along the air delivery pipe 502 and is ejected through multiple second air outlet pipes 503. The airflow direction acts vertically or nearly vertically on the back material side mesh area of ​​the filter steel mesh 3, impacting the blockage from the back of the filter steel mesh 3, pushing it out of the mesh or breaking it, restoring the mesh's permeability. Since the air delivery pipes 502 correspond one-to-one with the connecting rod 203 and are distributed along the radial direction, the airflow covers the entire area of ​​the filter steel mesh 3. At the same time, the second annular pipe 501 and the air delivery pipes 502 are both embedded in the grooves of the steel frame 2, forming a hidden air passage system that does not protrude from the structural surface.

[0049] When the ball mill is working, the ground material (aluminum silver paste) enters the next process through the outlet cover body 1. The filter steel mesh 3 is responsible for intercepting the grinding media (such as grinding beads) to ensure that only the material can pass through smoothly. Through the rigid support of the outer peripheral ring 201, the central cylinder 202 and the connecting rod 203, the filter steel mesh 3 can resist the impact of the material and grinding media, ensuring structural stability. The first airflow component 4 is triggered at regular intervals or according to the differential pressure sensor signal (the differential pressure sensor detects the pressure difference before and after the filter element in real time, and triggers the blowing action when the pressure difference exceeds the preset threshold, which is the fluid). The automatic control technology widely used in filtration and separation equipment is a conventional technical means in this field. It blows from the edge to the center along the material-facing side of the filter steel mesh 3 to remove the aluminum silver paste adhering to the surface and prevent filter cake formation. The second airflow component 5 is activated synchronously or as needed to blow vertically on the material-returning side of the filter steel mesh 3. The airflow penetrates the mesh and impacts the blockages on the material-facing side in the opposite direction, opening the mesh holes blocked by fine particles. At the same time, it blows the material remaining on the surface of the material-returning side towards the discharge channel. By adjusting the working frequency and intensity of the airflow component, it can adapt to the processing requirements of materials with different viscosities.

[0050] Example 2

[0051] Based on Example 1, in order to solve the problem that airflow purging is insufficient to completely remove solidified viscous aluminum silver paste, such as... Figures 1-3 , Figure 7 As shown, it also includes a scraping assembly 6, which includes a first scraping unit 601 for cleaning the material-facing side of the filter steel mesh 3 and sealing the first airflow assembly 4, a second scraping unit 602 for cleaning the material-receiving side of the filter steel mesh 3 and sealing the second airflow assembly 5, and a driving member 603 for driving the first scraping unit 601 and the second scraping unit 602 to rotate synchronously; the driving member 603 is disposed inside the central cylinder 202.

[0052] The first scraping unit 601 includes a first elastic scraper 601a and a closed ring 601b fixed at both ends of the first elastic scraper 601a. ​​The closed ring 601b is located inside the outer peripheral ring 201 and fits tightly therewith. The closed ring 601b is provided with an air outlet 601c that matches the first air outlet pipe 402 to allow the airflow generated by the first airflow assembly 4 to pass through.

[0053] The second scraping unit 602 includes multiple second elastic scrapers 602a corresponding one-to-one with the connecting rods 203. The second elastic scrapers 602a are positioned between the filter steel mesh 3 and the connecting rods 203 and are tightly fitted to both. Each second elastic scraper 602a has a second magnetic block 602b embedded in it, and a corresponding first magnetic block 204 is embedded in the connecting rod 203. The first magnetic block 204 and the second magnetic block 602b attract each other to position the scraping assembly 6. To ensure that the scraping assembly 6 can perform its rotational action normally, the output torque of the drive unit 603 is greater than the magnetic holding torque between the first magnetic block 204 and the second magnetic block 602b.

[0054] The drive unit 603 drives the first scraping unit 601 and the second scraping unit 602 to rotate synchronously via mechanical transmission or motor. The first elastic scraper 601a rotates and scrapes along the material-facing side surface of the filter steel mesh 3 to remove the adhering material. Multiple second elastic scrapers 602a rotate and scrape along the material-removing side surface of the filter steel mesh 3. The scraping operation can be carried out alternately or simultaneously with airflow purging to achieve the best unclogging effect.

[0055] When the scraper assembly 6 is not in operation, the second elastic scraper 602a can be accurately positioned at the connecting rod 203 by relying on the magnetic attraction between the first magnetic block 204 and the second magnetic block 602b, thereby sealing the second air outlet pipe 503 and preventing material from entering and causing airway blockage. At this time, the air outlet 601c on the sealing ring 601b is misaligned with the first air outlet pipe 402, thereby sealing the first air outlet pipe 402 and preventing material from entering and causing airway blockage.

[0056] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A novel aluminum silver paste ball mill cover filter device, characterized in that, include: The main body of the outlet cover (1) is fixedly installed at the outlet of the ball mill; A steel frame (2) is detachably and fixedly installed on the inner side of the outlet cover body (1); The filter steel mesh (3) is detachably and fixedly installed on the material-facing side of the steel frame (2); The steel frame (2) includes an outer circumferential ring (201), a central cylinder (202), and a plurality of connecting rods (203). The outer circumferential ring (201) and the central cylinder (202) are coaxially arranged, and the plurality of connecting rods (203) are radially fixed between the outer circumferential ring (201) and the central cylinder (202). Also includes: The first airflow assembly (4) is located on the material-facing side of the filter steel mesh (3) and is used to blow air from the edge to the center on the material-facing side of the filter steel mesh (3). The second airflow assembly (5) is located on the back side of the filter steel mesh (3) and is used to vertically blow air onto the back side of the filter steel mesh (3).

2. The novel aluminum silver paste ball mill cover filter device according to claim 1, characterized in that, The steel frame (2) has a stepped platform structure on the material receiving side for positioning and installing the filter steel mesh (3), and a pressure plate (205) for pressing the filter steel mesh (3). A sealing ring is provided between the pressure plate (205) and the filter steel mesh (3). The mesh size of the filter steel mesh (3) is smaller than the minimum diameter of the grinding media inside the ball mill.

3. The novel aluminum silver paste ball mill cover filter device according to claim 1, characterized in that, The first airflow assembly (4) includes a first annular pipe (401) and a plurality of first air outlet pipes (402) uniformly arranged circumferentially on the first annular pipe (401). The first annular tube (401) is located in an annular groove on the outer peripheral body (201) and is connected to an external air source.

4. The novel aluminum silver paste ball mill cover filter device according to claim 3, characterized in that, The first vent pipe (402) vents towards the material-facing surface of the filter steel mesh (3), and the angle between its axis and the plane containing the filter steel mesh (3) is 30°-45°.

5. A novel aluminum silver paste ball mill cover filter device according to claim 3, characterized in that, The second airflow assembly (5) includes a second annular pipe (501) and a plurality of air supply pipes (502) arranged radially inside the second annular pipe (501). The second annular tube (501) is located in the annular groove on the outer circumferential body (201) and is connected to the external air source. Each of the air supply pipes (502) is embedded in the axial groove on the connecting rod (203) in a corresponding manner, and each of the air supply pipes (502) is provided with a plurality of second air outlet pipes (503) distributed at equal intervals along its length direction.

6. A novel aluminum silver paste ball mill cover filter device according to claim 5, characterized in that, It also includes a scraping assembly (6), which includes a first scraping unit (601) for cleaning the material-facing side of the filter steel mesh (3) and closing the first airflow assembly (4), a second scraping unit (602) for cleaning the material-receiving side of the filter steel mesh (3) and closing the second airflow assembly (5), and a drive unit (603) for driving the first scraping unit (601) and the second scraping unit (602) to rotate synchronously. The driving component (603) is located inside the central cylinder (202).

7. A novel aluminum silver paste ball mill cover filter device according to claim 6, characterized in that, The first scraping unit (601) includes a first elastic scraper (601a) and a closed ring (601b) fixed at both ends of the first elastic scraper (601a). The closed ring (601b) is located inside the outer peripheral ring (201) and fits tightly therewith. The closed ring (601b) is provided with an air outlet (601c) that matches the first air outlet pipe (402) so as to allow the airflow generated by the first airflow assembly (4) to pass through.

8. A novel aluminum silver paste ball mill cover filter device according to claim 7, characterized in that, The second scraping unit (602) includes a plurality of second elastic scrapers (602a) that correspond one-to-one with the connecting rod (203); The second elastic scraper (602a) is disposed between the filter steel mesh (3) and the connecting rod (203) and fits tightly against the two. A second magnetic block (602b) is embedded in each of the second elastic scrapers (602a), and a first magnetic block (204) is embedded in the corresponding position on the connecting rod (203). The first magnetic block (204) and the second magnetic block (602b) attract each other to position the scraping assembly (6).

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