Roller ball milling equipment

Abstract

The utility model discloses roller ball-milling equipment which comprises a roller ball mill, the roller ball mill comprises a roller and a driving mechanism used for driving the roller to rotate, ball-milling beads are arranged in the roller, the side face of the roller is provided with an opening, and the roller ball-milling equipment further comprises a sealing cover and a U-shaped net basket. The sealing cover and the U-shaped net basket are used for being detachably matched with an opening in the side surface of the roller and are respectively mounted at the opening in the side surface of the roller before ball milling and blanking; after the U-shaped net basket is mounted, an arc-shaped convex part at the lower end of the U-shaped net basket is positioned in an inner cavity of the roller; the inner side face, facing the roller inner cavity, of the sealing cover is in an arc shape consistent with the roller side face opening position in curvature. After the sealing cover covers the opening of the side face of the roller, the inner side face, facing the inner cavity of the roller, of the sealing cover is matched with the wall of the inner cavity of the roller to form a non-concave-convex smooth roller wall.

Description

Technical Field

[0001] The utility model relates to the field of ball milling, and particularly relates to a drum ball milling device. Background Art

[0002] The ball milling process and ball mills have become common means and equipment in modern production. Generally speaking, a drum ball mill usually includes a drum and a driving mechanism for driving the drum to rotate. The side of the drum is open and is equipped with a detachable lid. The drum is filled with grinding beads. During ball milling, the material is added into the drum, and the lid is covered to start grinding. After ball milling, the lid is removed, and the side opening of the drum is turned downward to discharge the ground material. For example, the patent specification with the publication number CN215783804U discloses a drum ball mill, which includes a box body, a motor, and a drum; the box body is symmetrically provided with collar rings, the outer wall of the drum is provided with an opening, a cover plate is arranged in the opening, the drum is provided with a transmission shaft, a first belt pulley is installed on the transmission shaft, the motor is installed on the ground, a second belt pulley is installed at the output end of the motor, and the second belt pulley is connected with the first belt pulley through a belt. The box body is provided with a through hole, the box body is provided with an installation groove, the box body is provided with a discharge port, a filter box is arranged in the installation groove, the filter box is provided with a through port, a first filter screen is installed in the through port, the filter box is provided with a sliding groove, a mounting plate is slidably connected in the sliding groove, the mounting plate is provided with a through groove, and a second filter screen is installed in the through groove.

[0003] Flux usually contains corrosive halides. During the production process of flux, a drum ball mill is required to dry grind the flux raw materials. During grinding, it is usually desired to minimize the wear of the grinding beads, reduce the mixing of the residues from the worn grinding beads and the flux powder, and avoid affecting the quality of the flux.

[0004] In addition, during the ball milling and discharging processes, some flux raw materials are prone to moisture absorption. During discharging, ordinary discharge hoppers and sieves are prone to blockage, which is not conducive to controlling the moisture content of the powder. And subsequently, the ground powder semi-finished product needs to be weighed and then a solvent is added for the next process. Therefore, this is not conducive to controlling the weight of the powder.

[0005] In the prior art, the bottom surface of the common lid of the ball mill is flat, and the matching degree with the circular structure of the drum ball mill is not high enough, and the material is different from that of the beads, which is likely to cause wear of the beads; for ordinary discharge hoppers, due to the moisture absorption of the flux powder, during the discharging process, not only the speed is slow, but also it is easy to adsorb and adhere to the discharge hopper, and the sieve is also prone to blockage and non-discharging, resulting in caking and adhesion during long-term contact with air, leading to product scrapping.

[0006] Based on the above actual situations, it is necessary to design a new lid, discharge hopper and sieve structure for the drum ball mill to reduce the wear of the grinding beads, discharge quickly, reduce the contact with air, and avoid powder moisture absorption and caking. Summary of the Invention

[0007] In view of the above technical problems and deficiencies in the art, the present utility model provides a drum ball milling device, which has smoother grinding, can reduce the loss of ball milling beads during grinding, increase the powder discharge space, speed up the discharge speed, reduce the contact time with air, and reduce the probability of moisture absorption.

[0008] A drum ball milling device includes a drum ball mill, the drum ball mill includes a drum and a driving mechanism for driving the drum to rotate, the drum is filled with ball milling beads, the drum has an opening on the side, and the drum ball milling device further includes a sealing cover and a U-shaped wire basket.

[0009] The sealing cover and the U-shaped wire basket are used for detachably cooperating with the opening on the side of the drum and are respectively installed at the opening on the side of the drum before ball milling and discharging.

[0010] After installing the U-shaped wire basket, the lower arc-shaped protruding part of the U-shaped wire basket is located in the inner cavity of the drum. When discharging is required, the opening on the side of the drum can be first turned upwards, and then the U-shaped wire basket is fixedly installed at the opening on the side of the drum, so that the lower arc-shaped protruding part of the U-shaped wire basket is located in the inner cavity of the drum. Then the drum is rotated to make the opening on the side of the drum face downwards. Under the screening action of the U-shaped wire basket, the ball milling beads in the inner cavity of the drum will not pass through the U-shaped wire basket, while the ground material can pass through the U-shaped wire basket and fall to be collected. Such a design increases the screening contact area of the ground material powder, expands the discharge space, speeds up the discharge speed, and the screening process is located in the inner cavity of the drum, reducing the contact with air and greatly reducing the occurrence of caking of the ground material powder.

[0011] The inner side of the sealing cover facing the inner cavity of the drum is an arc with the same curvature as the position of the opening on the side of the drum; after the sealing cover covers the opening on the side of the drum, the inner side of the sealing cover facing the inner cavity of the drum and the inner cavity wall of the drum cooperate to form a smooth barrel wall without concavities and convexities. During ball milling, the arc-shaped inner side of the sealing cover matches the inner cavity wall of the drum, which can reduce unnecessary collision and friction losses of the ball milling beads during grinding, reduce the impurity content in the ground material powder, and ensure product quality.

[0012] In one embodiment, for the drum ball milling equipment described above, the ball milling beads are alumina ball milling beads, the sealing cover is made of titanium alloy, and the inner side of the sealing cover facing the inner cavity of the drum is lined with an alumina layer. Such a design is particularly suitable for ball milling corrosive materials (such as soldering fluxes, etc.). Moreover, the arc-shaped inner side of the sealing cover is lined with an alumina layer made of the same material as the ball milling beads, which can greatly reduce the loss of ball milling beads during grinding. For example, when the material to be ball milled is a soldering flux, the soldering flux usually contains corrosive substances such as halides. These corrosive substances are difficult to completely remove after being embedded in the structural gaps, and over time, they will cause strong corrosion to materials such as stainless steel. Based on this, the present utility model designs the material of the sealing cover to be titanium alloy, which can resist the corrosion of the soldering flux.

[0013] In one embodiment, for the drum ball milling equipment described above, the U-shaped wire basket includes four sides and a downwardly convex arc-shaped bottom surface. The four sides and the arc-shaped bottom surface of the U-shaped wire basket can all be screening surfaces, which play a role in screening the grinding materials and ball milling beads. Further, two of the opposite sides can be U-shaped surfaces, and the other two opposite sides can be rectangular surfaces.

[0014] In one embodiment, for the drum ball milling equipment described above, reinforcing ribs are provided on the rectangular surface and / or the arc-shaped bottom surface to improve the stability of the U-shaped wire basket so that it can withstand the impact of the grinding materials and ball milling beads.

[0015] In one embodiment, for the drum ball milling equipment described above, the upper edge of the U-shaped wire basket turns outwards to form a flange, which is used for bolted fixed connection with the edge of the opening on the side of the drum.

[0016] In one embodiment, the drum ball milling equipment further includes a discharge hopper, which is used for butt-joint installation with the open end of the U-shaped wire basket before discharging. When discharging is required, after the U-shaped wire basket is installed, the discharge hopper can be further butt-joint fixed. Further, the discharge hopper can be a conical structure, and its feed inlet for butt-joint with the open end of the U-shaped wire basket is larger than the discharge outlet, which is convenient for discharging and collecting.

[0017] In one embodiment, for the drum ball milling equipment described above, the discharge hopper is equipped with a vibrator. After the vibrator is installed on the discharge hopper, under the action of the vibrator, the amount of material powder accumulated at the discharge hopper opening can be reduced, and the discharging speed of the material powder flowing out of the U-shaped wire basket in the hopper can be accelerated.

[0018] Compared with the prior art, the present utility model has the following beneficial effects:

[0019] For the drum ball milling equipment of the present utility model, the grinding is smoother during ball milling, the wear of the ball milling beads is smaller, the discharging speed can be accelerated during discharging, the contact time with air can be reduced, and the probability of moisture absorption can be lowered. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a schematic structural diagram of a drum ball mill in the specific implementation manner;

[0021] Figure 2 It is a front view structural schematic diagram of the sealing cover in the specific implementation manner;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the sealing cover in the specific implementation manner;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the U-shaped wire basket in the specific implementation manner;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the discharge hopper in the specific implementation manner;

[0025] Figure 6 It is a structural schematic diagram of the butt joint assembly of the U-shaped wire basket and the discharge hopper when the drum ball milling equipment discharges materials in the specific implementation manner. Specific implementation manner

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention.

[0027] See Figures 1 to 6 , a drum ball milling equipment, including a drum ball mill 1, a sealing cover 10, a U-shaped wire basket 5 and a discharge hopper 6, which can be used for dry ball milling of brazing fluxes.

[0028] As Figure 1 shown, the drum ball mill 1 includes a drum 2 with a cylindrical inner cavity and a driving mechanism 4 for driving the drum 2 to rotate. Alumina ball milling beads are installed in the drum 2, and there is an opening 3 on the side of the drum 2. The material to be ground can be added into the inner cavity of the drum 2 through the opening 3.

[0029] The sealing cover 10 is used for detachably cooperating with the opening 3 on the side of the drum 2 and can be fixedly installed at the opening 3 on the side of the drum 2 before ball milling. As Figure 2 , Figure 3 shown, the inner side of the sealing cover 10 facing the inner cavity of the drum 2 is an arc with the same curvature as the position of the opening 3 on the side of the drum 2 and is lined with an alumina layer 11. After the sealing cover 10 covers the opening 3 on the side of the drum 2, the inner side of the sealing cover 10 facing the inner cavity of the drum 2 and the inner cavity wall of the drum 2 cooperate to form a smooth barrel wall without concavities and convexities. During ball milling, the arc-shaped inner side of the sealing cover 10 matches the inner cavity wall of the drum 2, which can reduce the unnecessary collision and friction loss of the ball milling beads during grinding, reduce the impurity content in the ground material powder, and ensure the product quality. In addition, the arc-shaped inner side of the sealing cover 10 is lined with an alumina layer 11 made of the same material as the ball milling beads, which can also greatly reduce the loss of the ball milling beads. The material of the sealing cover 10 is titanium alloy, which can resist the corrosion of brazing fluxes.

[0030] The U-shaped wire basket 5 is used for detachably cooperating with the side opening 3 of the drum 2 and can be fixedly installed at the side opening 3 of the drum 2 after the ball milling is completed and before the feeding. As Figure 4 shown, the U-shaped wire basket 5 includes four sides and a downwardly convex arc-shaped bottom surface. Two of the opposite sides are U-shaped surfaces, and the other two opposite sides are rectangular surfaces. Reinforcing ribs 9 are provided on both the rectangular surface and the arc-shaped bottom surface to improve the stability of the U-shaped wire basket 5 so that it can withstand the impact of the grinding material and the ball milling beads. The four sides and the arc-shaped bottom surface of the U-shaped wire basket 5 are all screening surfaces, which play a role in screening the grinding material and the ball milling beads. The upper edge of the U-shaped wire basket 5 is turned outwards to form a flanging 8 for bolted fixed connection with the edge of the side opening 3 of the drum 2.

[0031] As Figure 5 shown, the discharge hopper 6 is equipped with a vibrator 7. The discharge hopper 6 is used for butt-joint installation with the open end of the U-shaped wire basket 5 before feeding. The discharge hopper 6 is of a conical structure, and its feed inlet for butt-joint with the open end of the U-shaped wire basket 5 is larger than the discharge outlet, which is convenient for feeding and collection.

[0032] After the U-shaped wire basket 5 is fixedly installed at the side opening 3 of the drum 2, the lower arc-shaped protruding part of the U-shaped wire basket 5 is located in the inner cavity of the drum 2. When feeding is required, the side opening 3 of the drum 2 can be turned upwards first, and then the U-shaped wire basket 5 is fixedly installed at the side opening 3 of the drum 2 so that the lower arc-shaped protruding part of the U-shaped wire basket 5 is located in the inner cavity of the drum 2. After the U-shaped wire basket 5 is installed, the discharge hopper 6 (the discharge hopper 6 is inverted at this time) can be further butt-joint fixedly installed, and then the drum 2 is rotated so that the side opening 3 of the drum 2 faces downwards. At this time, the butt-joint assembly structure of the U-shaped wire basket 5 and the discharge hopper 6 is as Figure 6 shown. The four sides and the arc-shaped bottom surface of the U-shaped wire basket 5 are all located in the inner cavity of the drum 2. Under the screening action of the U-shaped wire basket 5, the ball milling beads in the inner cavity of the drum 2 will not pass through the U-shaped wire basket 5, while the ground material can pass through the U-shaped wire basket 5 and fall to be collected through the discharge hopper 6. Such a design increases the screening contact area of the ground material powder, expands the discharge space, speeds up the discharge flow rate, and the screening process is located in the inner cavity of the drum 2, reducing the contact with the air and greatly reducing the occurrence of caking of the ground material powder. In addition, after the vibrator 7 is installed on the discharge hopper 6, under the action of the vibrator 7, the amount of material powder accumulated at the mouth of the discharge hopper 6 can be reduced, and the discharge speed of the material powder flowing out of the U-shaped wire basket 5 in the hopper can be accelerated.

[0033] The above-mentioned roller ball mill equipment can be used for grinding the semi-finished product of the brazing flux, which is divided into two stages. During grinding, the arc-shaped sealing cover 10 of the roller ball mill 1 is fixed with screws and then ground. Since the inner lining is made of alumina, the same material as the roller ball mill 1, after installation, it forms a unified cylindrical structure with the inside of the roller ball mill 1, making the grinding smoother. During discharging, the discharging hopper 6 and the U-shaped wire basket 5 structure are installed on the roller ball mill 1 with screws. The arc-shaped bottom surface of the U-shaped wire basket 5 extends deep into the roller ball mill 1, increasing the contact area between the sieve and the material. By turning on the vibrator 7, the material can be collected under the discharging hopper 6.

[0034] During grinding, air is likely to flow into the traditional roller ball mill. The present utility model adopts lid-mounted grinding, which is simpler, more airtight and more stable than the previous sandwich structure, and can also reduce energy consumption. The material of the arc-shaped sealing cover is replaced with titanium alloy, avoiding the problem of easy rusting of the iron lid and preventing the contamination of the internal product caused by the mixing of rust.

[0035] During discharging, the structure of installing the U-shaped wire basket and adding a vibrator to the discharging hopper is adopted. The screening process occurs inside the roller, and the discharging flow rate is increased, reducing the contact with air and avoiding the caking of the moisture-absorbing powder.

[0036] In addition, it should be understood that after reading the above description of the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A roller ball milling device, comprising a roller ball mill, the roller ball mill including a roller and a driving mechanism for driving the roller to rotate, the roller being filled with ball milling beads, and the side surface of the roller being open, characterized in that, The drum ball milling equipment further includes a sealing cover and a U-shaped wire basket; The sealing cover and the U-shaped wire basket are used for detachably cooperating with the side opening of the drum and are respectively installed at the side opening of the drum before ball milling and blanking; after installing the U-shaped wire basket, the lower arc-shaped protruding part of the U-shaped wire basket is located in the inner cavity of the drum; The inner side surface of the sealing cover facing the inner cavity of the drum is an arc with the same curvature as the position of the side opening of the drum; after the sealing cover covers the side opening of the drum, the inner side surface of the sealing cover facing the inner cavity of the drum and the inner cavity wall of the drum cooperate to form a smooth drum wall without unevenness.

2. The roller ball milling equipment according to claim 1, characterized in that The ball milling beads are alumina ball milling beads, the material of the sealing cover is titanium alloy, and the inner side surface of the sealing cover facing the inner cavity of the drum is lined with an alumina layer.

3. The roller ball milling equipment according to claim 1, characterized in that, The U-shaped wire basket includes four side surfaces and a downwardly convex arc-shaped bottom surface, wherein two opposite side surfaces are U-shaped surfaces, and the other two opposite side surfaces are rectangular surfaces; The four side surfaces and the arc-shaped bottom surface of the U-shaped wire basket are all screening surfaces.

4. The roller ball milling equipment according to claim 3, characterized in that, Reinforcing ribs are provided on the rectangular surface and / or the arc-shaped bottom surface.

5. The roller ball milling equipment according to claim 1, characterized in that, The upper edge of the U-shaped wire basket is turned outwards to form a flange for bolted fixed connection with the edge of the side opening of the drum.

6. The roller ball milling equipment according to claim 1, characterized in that, The drum ball milling equipment further includes a discharge hopper, which is used for butt-joint installation with the open end of the U-shaped wire basket before blanking.

7. The roller ball milling equipment according to claim 6, characterized in that, The discharge hopper is equipped with a vibrator.

8. The roller ball milling equipment according to claim 6, characterized in that The discharge hopper is of a conical structure, and its feed port for butt-joint with the open end of the U-shaped wire basket is larger than the discharge port.

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