A steel ball ratio adjustment device for a ball mill

Abstract

The invention discloses a steel ball ratio adjustment device for a ball mill, comprising: more than one adjustment port arranged on the cylinder body of the ball mill, an openable adjustment door installed on the adjustment port, the adjustment door comprising a porous slot plate arranged on the inner side of the cylinder body, and an electromagnetic plate unit stacked on the porous slot plate and arranged on the outer side of the cylinder body, the electromagnetic plate unit being used to adsorb the steel balls that can be magnetically attracted in and near the holes of the porous slot plate when powered. The invention can use the adjustment door and the porous slot plate to perform rough grinding with steel balls with larger particle sizes in the early stage of ball milling, and then take out the steel balls with larger diameters through the adjustment door composed of the electromagnetic plate unit and the porous slot plate, calculate the weight of the steel balls taken out, and adjust the steel ball diameter ratio in the ball mill; use steel balls with smaller particle sizes or increase the proportion of steel balls with smaller particle sizes for fine grinding in the later stage, and can accelerate the ball milling efficiency and improve the production speed in the process of preparing flaky zinc powder.

Description

Technical Field

[0001] The invention relates to the field of metal powder processing, in particular to a steel ball ratio regulating device for a ball mill. Background Art

[0002] Heavy-duty anti-corrosion coatings are a type of anti-corrosion coatings that can be used in relatively harsh corrosive environments and have a longer protection period than conventional anti-corrosion coatings. Compared with ordinary coatings, heavy-duty anti-corrosion coatings can achieve a higher film thickness in one spraying. They have high technical content and are difficult to apply. They not only rely on traditional experience and knowledge of coatings, but also require the intersection and integration of knowledge from multiple disciplines.

[0003] Due to the uniqueness of its flaky structure, flaky zinc powder forms a plane overlap between the surfaces in the coating, which greatly reduces the porosity of the coating and effectively blocks the penetration of corrosive media and water. At the same time, the coating formed by the flaky structure has better ductility during coating construction than the commonly used spherical zinc powder heavy anti-corrosion coating, so the amount of filler is only one-third of the amount of spherical zinc powder. In addition, considering that there will be certain pores after the flaky zinc powder is arranged layer by layer, these pores can be filled by spherical zinc powder. Therefore, when a certain proportion of mixed zinc powder composed of spherical zinc powder and flaky zinc powder is used as zinc powder filler for zinc-rich coating, the pores in the coating are filled, the airtightness of the coating is more prominent, and the anti-corrosion performance is better. Therefore, how to quickly process zinc powder into flaky zinc powder with a flaky structure is the main direction of research on flaky zinc powder.

[0004] At present, in the processing of flaky zinc powder, metal powder raw materials and ball milling aids are usually mixed in advance, and then put into a closed ball mill with steel balls in proportion for ball milling. During the entire ball milling process, the steel balls are always in the drum of the ball mill. As the processing of flaky zinc powder progresses, the slightly larger zinc powder has been basically ball milled into flakes in the later stage of processing. At this time, it is necessary to remove some or all of the large-diameter steel balls and use smaller-diameter steel balls or increase the proportion of small-diameter steel balls for ball milling, so as to improve the production efficiency of flaky zinc powder and ensure the processing effect of the scaly structure of small-particle flaky zinc powder. However, during the ball milling process, the steel balls cannot be taken in and out at any time, and the ratio of steel balls to materials cannot be adjusted, which prolongs the processing time of ball milling. Summary of the invention

[0005] The invention provides a steel ball ratio regulating device for a ball mill, which is used to solve the technical problem that the size and ratio of the steel balls cannot be adjusted during the processing of flaky zinc powder.

[0006] In order to solve the above technical problems, the technical solution proposed by the present invention is:

[0007] A steel ball ratio adjustment device for a ball mill comprises: one or more adjustment ports arranged on a cylinder body of the ball mill, an openable adjustment door is installed on the adjustment port, the adjustment door comprises a porous slot plate arranged on the inner side of the cylinder body, and an electromagnetic plate unit stacked on the porous slot plate and arranged on the outer side of the cylinder body, the electromagnetic plate unit is used to adsorb magnetically attracted steel balls in and near the holes of the porous slot plate when energized.

[0008] Preferably, circular holes are opened on the porous slot plate, and the circular holes are arranged in an array or in a star-shaped radial arrangement on the porous slot plate, so that when the electromagnetic plate unit is energized, the steel balls attracted by the magnetism form a steel ball stacking area with magnetic layer-by-layer transmission in the multiple circular holes of the porous slot plate and near the gaps between the multiple circular holes.

[0009] Preferably, there are two adjustment ports on the cylinder body, namely the first adjustment port and the second adjustment port, and the first adjustment port and the second adjustment port are respectively provided with the first adjustment door and the second adjustment door that can be opened, and the circular hole diameter of the porous slot plate of the first adjustment door is larger than the circular hole diameter of the porous slot plate of the second adjustment door.

[0010] Preferably, the multi-hole slot plate on the regulating door comprises a first hole slot area and a second hole slot area, and the diameter of the circular holes in the first hole slot area is larger than the diameter of the circular holes in the second hole slot area.

[0011] Preferably, the porous slot plate is detachably mounted on a slot plate bracket, the slot plate bracket is mounted on the cylinder body of the ball mill through a hinge, and the electromagnetic plate unit is movably mounted on the outer side of the slot plate bracket.

[0012] Preferably, the porous slot plate is made of magnetic insulating material.

[0013] Preferably, the porous slot plate is made of magnetic conductive material, and the diameter of the circular holes of the porous slot plate is slightly larger than the diameter of the steel balls to be adsorbed, and the depth of the circular holes of the porous slot plate is 1 to 5 diameters of the steel balls to be adsorbed.

[0014] Preferably, the porous slot plate is mounted on the cylinder body of the ball mill by a hinge, and the electromagnetic plate unit includes an electromagnet and a magnetic conductive plate tightly mounted with the electromagnet. The magnetic conductive plate is attached to the outer side of the porous slot plate and mounted on the cylinder body of the ball mill by a hinge to achieve opening simultaneously or differently with the porous slot plate.

[0015] The present invention has the following beneficial effects:

[0016] The steel ball ratio adjustment device of the ball mill of the present invention can use steel balls with larger particle sizes (large-diameter steel balls of magnetic conductor materials) for rough grinding in the early stage of ball milling through the adjustment door and the porous slot plate, and then take out the large-diameter steel balls through the adjustment door composed of the electromagnetic plate unit and the porous slot plate, calculate the weight of the taken out steel balls, and adjust the diameter ratio of the steel balls in the ball mill; in the later stage, use steel balls with smaller particle sizes or increase the proportion of steel balls with smaller particle sizes for fine grinding, which can accelerate the ball milling efficiency and improve the production speed in the process of preparing flaky zinc powder, and can ensure the processing effect of the flaky structure of small-particle flaky zinc powder. The quality of the finished product is better than that of the product that is ball milled with steel balls of a single steel ball diameter or a fixed steel ball diameter ratio, and the heavy-duty anti-corrosion paint coating made of the prepared flaky zinc powder has better shielding effect and better anti-corrosion performance.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 1 is a schematic structural diagram of a steel ball ratio adjustment device for a ball mill according to a preferred embodiment 1 of the present invention;

[0020] Figure 2 yes Figure 1 A schematic cross-sectional structure diagram along the AA direction;

[0021] Figure 3 1 is a schematic diagram of the front view of the porous slotted plate of the preferred embodiment 1 of the present invention;

[0022] Figure 4 1 is a schematic diagram of the cross-sectional structure of the porous slotted plate at BB of the preferred embodiment 1 of the present invention (side view);

[0023] Figure 5 2 is a schematic structural diagram of a steel ball ratio adjustment device for a ball mill according to a preferred embodiment 2 of the present invention;

[0024] Figure 6 Schematic diagram of the cross-sectional structure of the porous slotted plate of the preferred embodiment 2 of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the steel ball ratio adjustment device of the ball mill according to the preferred embodiment 3 of the present invention;

[0026] Figure 8 It is a schematic diagram of the structure of the porous slot plate of the preferred embodiment 3 of the present invention.

[0027] The symbols in the figure represent:

[0028] 1. Cylinder body of ball mill; 2. Adjustment port; 21. First adjustment port; 22. Second adjustment port; 3. Adjustment door; 31. First adjustment door; 32. Second adjustment door; 4. Multi-hole slot plate; 41. Round hole; 42. First hole slot area; 43. Second hole slot area; 5. Electromagnetic plate unit; 51. Electromagnet; 6. Slot plate bracket. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, but the present invention can be implemented in a variety of different ways as defined and covered by the claims. In addition, the technical features in the following embodiments can be combined with each other, and the embodiments are only examples and are not intended to limit the reasonable combination of technical features.

[0030] Embodiment 1:

[0031] See also Figure 1 The steel ball ratio adjustment device of the ball mill of this embodiment comprises: one or more adjustment ports 2 arranged on the cylinder body 1 of the ball mill, an openable adjustment door 3 is installed on the adjustment port 2, the adjustment door 3 comprises a porous slot plate 4 arranged on the inner side of the cylinder body, and an electromagnetic plate unit 5 stacked on the porous slot plate 4 and arranged on the outer side of the cylinder body, the electromagnetic plate unit 5 is used to adsorb the steel balls that can be attracted by magnetism in and near the holes of the porous slot plate 4 when energized. Through the adjustment door 3 and the porous slot plate 4, in the early stage of ball milling, steel balls with larger particle sizes (large diameter steel balls of magnetic conductor materials) can be used for rough grinding, and then the large diameter steel balls are partially taken out through the adjustment door 3 composed of the electromagnetic plate unit 5 and the porous slot plate 4 (preferably when the adjustment door 3 is rotated to the upper side of the cylinder body, so as to prevent a large amount of zinc powder from being taken out), and the weight of the taken out steel balls is calculated, so as to adjust the diameter ratio of the steel balls in the ball mill; it is convenient to use steel balls with smaller particle sizes or increase the proportion of steel balls with smaller particle sizes for fine grinding in the later stage.

[0032] In this embodiment, the porous slot plate 4 is provided with a circular hole 41, and the circular hole 41 on the porous slot plate 4 is preferably a through hole. Figure 2 , Figure 3 , Figure 4 The circular holes 41 are arranged in an array or in a star-shaped radial arrangement on the porous slot plate 4, so that when the electromagnetic plate unit 5 is energized, the steel balls attracted by the magnetism form a steel ball stacking area with magnetic layer-by-layer transmission in the multiple circular holes 41 of the porous slot plate 4 and near the gaps between the multiple circular holes 41, which is convenient for taking out the steel balls.

[0033] In this embodiment, the porous slot plate 4 is installed on the cylinder body 1 of the ball mill through a hinge seal and fixed by a locking device. Further, the electromagnetic plate unit 5 of this embodiment may include an electromagnet 51 and a magnetic conductive plate tightly installed with the electromagnet 51, and the magnetic conductive plate is attached to the outer side of the porous slot plate 4 and installed on the cylinder body 1 of the ball mill through bolts or hinges to achieve simultaneous or non-simultaneous opening with the porous slot plate 4.

[0034] By adopting the above structure, the ball milling efficiency can be accelerated and the production speed can be improved in the process of preparing the flaky zinc powder, and the processing effect of the flaky structure of the small particle flaky zinc powder can be ensured.

[0035] This embodiment is suitable for use in situations where product accuracy and grading requirements are not high.

[0036] Embodiment 2:

[0037] The structure of this embodiment is basically the same as that of embodiment 1, which will not be described in detail here. The only difference between the two is that:

[0038] See also Figure 5 , Figure 6 In this embodiment, there are two regulating ports 2 on the cylinder body, namely, the first regulating port 21 and the second regulating port 22. The first regulating port 21 and the second regulating port 22 are respectively provided with the first regulating door 31 and the second regulating door 32 which can be opened. The aperture of the circular hole 41 of the porous slot plate 4 of the first regulating door 31 is larger than the aperture of the circular hole 41 of the porous slot plate 4 of the second regulating door 32. The porous slot plate 4 is made of magnetic conductive material, and the aperture of the circular hole 41 of the porous slot plate 4 is slightly larger than the diameter of the steel ball to be adsorbed, and the hole depth of the circular hole 41 of the porous slot plate 4 is 1 to 5 diameters of the steel ball to be adsorbed. Through two porous slot plates 4 with different apertures, the screening of steel balls of three sizes can be achieved. For example, when the electromagnet 51 on the second adjusting door 32 is energized, the steel balls of the middle diameter are adsorbed into the circular hole 41, and the steel balls of the middle size can be taken out first, and then the steel balls of the largest diameter are taken out through the first adjusting door 31. The steel balls of the smallest diameter are made of magnetic insulating materials (such as stainless steel), so that the steel balls of the smallest diameter are always kept in the cylinder body 1 of the ball mill. When taking out the steel balls of the large diameter, small diameter steel balls or ball milling aids with a shorter reaction time can also be added through the adjusting door 3 to improve the quality of the flaky zinc powder.

[0039] In this embodiment, the porous slot plate 4 is detachably mounted on the slot plate bracket 6, the slot plate bracket 6 is mounted on the cylinder body 1 of the ball mill through bolts or hinges, and the electromagnetic plate unit 5 is movably mounted on the outer side of the slot plate bracket 6. The porous slot plate 4 can be replaced with a porous slot plate 4 with different apertures.

[0040] This embodiment is suitable for use in situations where high product accuracy and grading requirements are required.

[0041] Embodiment 3:

[0042] The structure of this embodiment is basically the same as that of embodiment 1, which will not be described in detail here. The only difference between the two is that:

[0043] In this embodiment, the porous slot plate 4 is made of magnetic insulating material. Figure 7 , Figure 8 The porous slot plate 4 on the regulating door 3 of this embodiment includes a first slot area 42 and a second slot area 43, and the aperture of the circular hole 41 of the first slot area 42 is larger than the aperture of the circular hole 41 of the second slot area 43. It is more convenient to process and can also achieve the screening of steel balls of three sizes. However, the screening effect is not as good as that of embodiment 2, and it can be used in occasions with medium product accuracy and classification requirements.

[0044] In summary, the present invention can use steel balls with larger particle sizes (large diameter steel balls of magnetic conductor materials) for coarse grinding in the early stage of ball milling by adjusting the door 3 and the porous slot plate 4; and use steel balls with smaller particle sizes or increase the proportion of steel balls with smaller particle sizes for fine grinding in the later stage. In the process of preparing flaky zinc powder, the ball milling efficiency can be accelerated, the production speed can be improved, and the processing effect of the flaky structure of small-particle flaky zinc powder can be ensured. The quality of the finished product is better than that of the product that is ball milled with steel balls of a single steel ball diameter or a fixed steel ball diameter ratio. The heavy-duty anti-corrosion coating made of the prepared flaky zinc powder has a better shielding effect and a better anti-corrosion performance.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steel ball ratio adjustment device for a ball mill, characterized in that: include: One or more adjustment ports (2) are provided on a cylinder body (1) of a ball mill, wherein the adjustment ports (2) are provided with an openable adjustment door (3), wherein the adjustment door (3) comprises a porous slot plate (4) provided on the inner side of the cylinder body, and an electromagnetic plate unit (5) stacked on the porous slot plate (4) and provided on the outer side of the cylinder body, wherein the electromagnetic plate unit (5) is used to adsorb magnetically attracted steel balls in and near the holes of the porous slot plate (4) when energized; The porous slot plate (4) is provided with circular holes (41), and the circular holes (41) are arranged in an array or in a star-shaped radial arrangement on the porous slot plate (4), so that when the electromagnetic plate unit (5) is energized, the steel balls attracted by the magnetism form a steel ball stacking area in which the magnetism is transmitted layer by layer in the plurality of circular holes (41) of the porous slot plate (4) and near the gaps between the plurality of circular holes (41); The number of the regulating ports (2) on the cylinder body is two, namely a first regulating port (21) and a second regulating port (22); the first regulating port (21) and the second regulating port (22) are respectively provided with an openable first regulating door (31) and a second regulating door (32); the aperture of the circular hole (41) of the porous slot plate (4) of the first regulating door (31) is larger than the aperture of the circular hole (41) of the porous slot plate (4) of the second regulating door (32); The porous slot plate (4) is mounted on the cylinder body (1) of the ball mill via a hinge, the electromagnetic plate unit (5) comprises an electromagnet (51) and a magnetic conductive plate tightly mounted on the electromagnet (51), the magnetic conductive plate being attached to the outer side of the porous slot plate (4) and mounted on the cylinder body (1) of the ball mill via a hinge so as to be opened simultaneously with or at different times from the porous slot plate (4).

2. The steel ball ratio adjustment device for a ball mill according to claim 1, characterized in that: The multi-hole slot plate (4) on the regulating door (3) comprises a first hole slot area (42) and a second hole slot area (43), and the diameter of the circular holes (41) in the first hole slot area (42) is larger than the diameter of the circular holes (41) in the second hole slot area (43).

3. The steel ball ratio adjustment device for a ball mill according to claim 1, characterized in that: The porous slot plate (4) is detachably mounted on a slot plate bracket (6); the slot plate bracket (6) is mounted on a cylinder body (1) of a ball mill via a hinge; and the electromagnetic plate unit (5) is movably mounted on the outer side of the slot plate bracket (6).

4. The steel ball ratio adjustment device for a ball mill according to claim 3, characterized in that: The porous slot plate (4) is made of magnetic insulating material.

5. The steel ball ratio adjustment device for a ball mill according to claim 3, characterized in that: The porous slot plate (4) is made of magnetically conductive material, and the diameter of the circular hole (41) of the porous slot plate (4) is slightly larger than the diameter of the steel ball to be adsorbed, and the depth of the circular hole (41) of the porous slot plate (4) is 1 to 5 diameters of the steel ball to be adsorbed.

Images