Magnetic iron oxide production ball mill

Abstract

The utility model discloses a ball mill for magnetic iron oxide production belongs to ball mill technical field, and this device includes support, two bearing seats, cylinder, feeding assembly and drive assembly, and cylinder is rotatoryly connected through hollow pipe and bearing seat, is equipped with the opening on the cylinder top wall, and the detachable connection of cylinder has the cover, is equipped with the discharge hopper on the support, is equipped with the dust cover on the support, is equipped with dust removal assembly and power fan on the support. The utility model sets up dust removal assembly and power fan, can collect the dust that scatters in dust cover when unloading, guarantees the workshop working environment, dust removal assembly includes cyclone dust collector and filter bag dust collector, and the dust removal effect is good, and the dust collector below is connected dust collection box, can collect magnetic iron oxide, sets up the fourth communication pipe that communicates with dust cover on power fan, can accelerate the airflow flow rate in dust cover when cylinder carries out the ball mill work, carries out the air cooling heat dissipation to the cylinder in working.

Description

Technical Field

[0001] This utility model belongs to the field of ball mill technology, specifically relating to a ball mill for producing magnetic iron oxide. Background Technology

[0002] Iron(III) oxide, also known as magnetic iron oxide, is a black crystal with magnetic properties. Its chemical formula is Fe3O4. Mechanical grinding (ball milling) is a common physical method for preparing micron-sized magnetic iron oxide. Generally, large-diameter magnetic iron oxide particles are ground into micron-sized magnetic iron oxide through the collision, compression, and shearing action of the grinding media (balls) in the ball mill. This method is suitable for mass production of micron-sized magnetic iron oxide. The applicant previously applied for a utility model patent related to a ball mill, publication number: CN223249441U, titled "A Ball Mill for Pigment Production". However, this ball mill still has some problems in use. Although a dust cover is installed next to the cylinder, dust still floats when the micron-sized magnetic iron oxide is unloaded, affecting the workshop working environment. Utility Model Content

[0003] The technical problem solved by this utility model is to provide a ball mill for producing magnetic iron oxide that can collect the scattered dust during unloading.

[0004] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A ball mill for producing magnetic iron oxide includes a support frame, two bearing seats symmetrically arranged on the support frame, a cylinder rotatably connected between the two bearing seats and used to accommodate working balls, a feeding assembly for feeding materials into the cylinder, and a driving assembly for driving the cylinder to rotate. The cylinder is rotatably connected to the bearing seats through a hollow tube. An opening is provided on the top wall of the cylinder, and a cover for sealing the opening is detachably connected to the cylinder. A discharge hopper is provided on the support frame at a position corresponding to the opening of the cylinder, and a dust cover is provided on the support frame at a position corresponding to the discharge hopper. A dust removal assembly connected to the dust cover and a power fan connected to the dust removal assembly are provided on the support frame.

[0006] Furthermore, the dust removal assembly includes a first dust collector and a second dust collector connected to the first dust collector. The first dust collector is connected to the dust cover through a first connecting pipe, the second dust collector is connected to the first dust collector through a second connecting pipe, and the power fan is connected to the second dust collector through a third connecting pipe.

[0007] Furthermore, the first connecting pipe is provided with a first on / off valve, the third connecting pipe is connected to the first connecting pipe through a fourth connecting pipe, the fourth connecting pipe is provided with a fourth on / off valve, and the third connecting pipe is provided with a third on / off valve.

[0008] Furthermore, the dust cover includes a first half-cover and a second half-cover, which are respectively disposed on both sides of the cylinder. Both the first half-cover and the second half-cover are provided with air inlets that communicate with the first connecting pipe.

[0009] Furthermore, the feeding assembly includes a feeding motor and a first reducer connected to the feeding motor, a feeding shell penetrating the hollow tube, and a spiral blade disposed inside the feeding shell and connected to the first reducer.

[0010] Furthermore, the drive assembly includes a drive motor, a second reducer connected to the drive motor, and a drive gear connected to the second reducer, and a gear ring corresponding to the drive gear is connected to the outer wall of the cylinder.

[0011] Furthermore, the cylinder includes a plurality of inner lining plates disposed on its inner wall.

[0012] Furthermore, the first dust collector is a cyclone dust collector, and the second dust collector is a bag filter dust collector.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0014] 1. Dust collection components and a power fan are installed to collect dust floating inside the dust cover during unloading, ensuring a safe working environment in the workshop;

[0015] 2. The dust removal components include a cyclone dust collector and a filter bag dust collector, which have good dust removal effect. The dust collector is connected to a dust collection box at the bottom, which can collect magnetic iron oxide.

[0016] 3. A fourth connecting pipe connected to the dust cover is installed on the power fan, which can accelerate the airflow speed inside the dust cover when the cylinder is ball milling, and provide air cooling for the working cylinder. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the feeding assembly and drive assembly structure in an embodiment;

[0019] Figure 3 This is a schematic diagram of the dust removal components and power fan structure in the embodiment;

[0020] Figure 4This is a schematic diagram of the cross-sectional structure of the dust cover in the embodiment;

[0021] Figure 5 This is a schematic diagram of the cross-sectional structure of the gear ring in the embodiment. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0023] like Figure 1 As shown, this utility model discloses a ball mill for producing magnetic iron oxide. The ball mill includes a support frame 1, bearing seats 2, a cylinder 3, a feeding assembly 4, a drive assembly 5, a dust removal assembly 8, and a power fan 9. The support frame 1 is generally rectangular, including four support legs 11 and a support plate 12. The support plate 12 is fixed at a certain height by the four support legs 11. A receiving container can be placed below the support plate 12. Two bearing seats 2 are provided, symmetrically arranged on the support plate 12. A first base is provided at the bottom of the bearing seat 2, and the bearing seat 2 is connected to the support plate 12 through the first base. The cylinder 3 rotates... The cylinder 3 is hollow and cylindrical, connected between two bearing seats 2. Hollow tubes 31 are connected to both ends of the cylinder 3. The two ends of the cylinder 3 are rotatably connected to the corresponding bearing seats 2 through the hollow tubes 31. Bearings are provided inside the bearing seats 2. The hollow tubes 31 are interference-fitted into the inner ring of the bearing in the bearing seat 2. Since the cylinder 3 is hollow, a working cavity is provided inside the cylinder 3 to accommodate working balls. In this embodiment, the working balls are zirconium beads. The feeding assembly 4 is located at one end of the cylinder 3. The feeding assembly 4 is used to transport the powder of magnetic iron oxide raw material into the cylinder 3. The driving assembly 5 is located on the side of the other end of the cylinder 3 and is used to drive the cylinder 3 to rotate.

[0024] like Figure 4 and Figure 5 As shown, the cylinder 3 includes multiple inner lining plates 32 disposed on its inner wall. The inner lining plates 32 are arc-shaped plates with two countersunk holes. They are detachably connected to the cylinder body 3 by countersunk bolts passing through the countersunk holes. The multiple inner lining plates 32 cover the inner wall of the cylinder 3. The inner lining plates 32 are made of existing wear-resistant steel liners, such as the high-chromium alloy steel ball mill liners of Jiangsu Shuangxing Special Steel Co., Ltd., which can not only resist the impact of hard particles such as zirconium beads, but also effectively prevent corrosion and wear inside the equipment, thereby extending the service life of the equipment.

[0025] like Figure 1 , Figure 2 and Figure 4As shown, an opening is provided in the middle of the top wall of the cylinder 3. A cover 7 for sealing the opening is detachably connected to the cylinder 3. A frame is provided around the opening, and the cover 7 is connected to the frame by bolts. A handle is provided on the cover 7 for easy lifting. An inner liner 32 is detachably connected inside the cover 7, thus forming a cylindrical working surface with the inner liner 32 on the inner wall of the cylinder 3. Before ball milling, the cover 7 is opened and the working balls are placed in, and then the cover 7 is closed. A discharge hopper 13 is provided on the support 1 at the position corresponding to the opening of the cylinder 3. A discharge port is provided on the support plate 12 of the support 1. The upper end of the discharge hopper 13 is connected to the discharge port. When the cylinder 3 is rotated so that the opening faces downward, the opening of the cylinder 3 is above the discharge port. When discharge is required, the cover 7 is opened and the cylinder 3 is rotated so that the opening faces downward. The micron-sized magnetic iron oxide and zirconium beads after ball milling are poured out from the opening, pass through the discharge hopper 13 and enter the receiving container, which awaits delivery to the next filtration stage. To reduce dust during unloading, a dust cover 14 is provided on the support 1. The dust cover 14 is positioned corresponding to the unloading hopper 13, and its lower end is connected to the unloading hopper 13. The dust cover 14 is located on both sides of the cylinder 3. When the cylinder 3 rotates, the opening of the cylinder 3 passes through the dust cover 14, and most of the rotation trajectory of the opening of the cylinder 3 is within the dust cover 14. There is a gap between the side wall of the dust cover 14 and the cylinder 3. A rubber plate can be installed at the gap of the dust cover 14 to seal the gap, which does not affect the rotation of the cylinder 3 and can block most of the dust. An arc-shaped baffle is provided in the front and rear direction below the cylinder 3. The upper end of the arc-shaped baffle is close to the outer wall of the cylinder 3 and is equipped with a rubber plate to reduce dust leakage. When unloading is required, the cover 7 is removed, the cylinder 3 is rotated, and the micron-sized magnetic iron oxide and working balls inside the cylinder 3 are poured out from the opening and enter the unloading hopper 13 under the guidance of the dust cover 14.

[0026] like Figure 1 , Figure 3 and Figure 4As shown, the support 1 is equipped with a dust removal component 8 and a power fan 9. The dust removal component 8 is connected to the dust cover 14, and the power fan 9 is connected to the dust removal component. The dust removal component 8 includes a first dust collector 81 and a second dust collector 82. In this embodiment, the first dust collector 81 adopts an existing cyclone dust collector. The air inlet on the side of the cylinder of the first dust collector 81 is connected to the dust cover 14 through the first connecting pipe 801. The airflow enters the cylinder of the first dust collector 81 from inside the dust cover 14 through the first connecting pipe 801. After cyclone dust removal, the airflow goes upward from the middle outlet of the cylinder. The lower end of the first dust collector 81 is detachably connected to a first dust collection box 811 by bolts. The particles that slide down after cyclone dust removal fall into the first dust collection box 811. The second dust collector 82 is connected to the first dust collector 81 through the second connecting pipe 802. The second dust collector 82 adopts an existing filter bag dust collector. The second dust collector 82 is equipped with multiple filter bags 820. The filter bags 820 are existing cylindrical polytetrafluoroethylene filter bags. The airflow discharged from the first dust collector 81 enters the second dust collector 82 through the second connecting pipe 802, is filtered by the filter bags 820, and is discharged from the third connecting pipe 803. The lower end of the second dust collector 82 is detachably connected to the second dust collection box 821 by bolts. The top cover of the second dust collector 82 can be opened. By tapping the filter bags 820, the dust particles on the outer wall of the filter bags 820 can be knocked off, and the sliding particles fall into the second dust collection box 821. The power fan 9 is connected to the second dust collector 82 through the third connecting pipe 803. The power fan 9 includes an existing power motor and a fan. The fan adopts an existing centrifugal fan. The air inlet end of the centrifugal fan is connected to the second dust collector 82 through the third connecting pipe 803. The air outlet end of the centrifugal fan is connected to the exhaust pipe 92. The exhaust pipe 92 extends upward, and the airflow after two filtrations is discharged from the exhaust pipe 92.

[0027] like Figure 1 , Figure 3 and Figure 4As shown, the dust cover 14 includes a first half-cover 141 and a second half-cover 142. The first half-cover 141 and the second half-cover 142 are symmetrically arranged on both sides of the cylinder 3. Both the first half-cover 141 and the second half-cover 142 are provided with air inlets 143. The air inlets 143 are located at the end of the dust cover 14 near the unloading hopper 13. The air inlet 143 on the first half-cover 141 is connected to the first connecting pipe 801, and the air inlet 143 on the second half-cover 142 is connected to the first connecting pipe 801 through the fifth connecting pipe 144. Thus, the air inlets 143 on the first half-cover 141 and the second half-cover 142 can generate negative pressure, which can absorb the upward-blown dust during unloading and reduce dust leakage. The third connecting pipe 803 is connected to the first connecting pipe 801 via the fourth connecting pipe 804. The first connecting pipe 801 is equipped with a first shut-off valve 85, which is an existing butterfly valve. The first shut-off valve 85 is positioned behind the airflow direction at the connection point between the fourth connecting pipe 804 and the first connecting pipe 801. The third connecting pipe 803 is equipped with a third shut-off valve 83, which is positioned in front of the airflow direction at the connection point between the fourth connecting pipe 804 and the third connecting pipe 803. The fourth connecting pipe 804 is equipped with a fourth shut-off valve 84. Both the third shut-off valve 83 and the fourth shut-off valve 84 are existing butterfly valves. When dust removal is required inside the dust cover 14, the fourth shut-off valve 84 is closed, and the first shut-off valve 85 and the third shut-off valve 83 are opened. The airflow entering through the inlet 143 passes through two filters and then through the exhaust pipe 92. When the cylinder 3 is working in the ball mill, the fourth shut-off valve 84 is opened, and the first shut-off valve 85 and the third shut-off valve 83 are closed. The airflow entering the inlet 143 directly enters the power fan 9 through the fourth connecting pipe 804 and is then directly discharged from the exhaust pipe 92. The accelerated airflow inside the dust cover 14 can form wind cooling for the working cylinder 3, reducing the temperature of the outer wall of the cylinder 3 and achieving a cooling effect.

[0028] like Figure 1 and Figure 2As shown, the feeding assembly 4 adopts an existing screw conveyor, including a feeding motor 41, a first reducer 42, a feeding shell 43, and a screw blade 44. The bottoms of the feeding motor 41, the first reducer 42, and the feeding shell 43 are all connected to a second base. The second base is connected to the first base at the bottom of the bearing seat 2. The feeding motor 41 is connected to the first reducer 42. The output shaft of the first reducer 42 is located inside the feeding shell 43. The screw blade 44 is located inside the feeding shell 43 and connected to the output shaft of the first reducer 42. The screw blade 44 is shaftless. The spiral blades and feed shell 43 penetrate the hollow tube 31. There is a gap between the outer wall of the feed shell 43 and the hollow tube 31, so that the hollow tube 31 will not hit the feed shell 43 when it rotates. The part of the feed shell 43 located outside the cylinder 3 is provided with a feed hopper. The discharge hopper of the feed shell 43 is located at the tail end of the feed shell 43 and communicates with the working chamber inside the cylinder 3. The magnetic iron oxide raw material to be ball-milled enters the feed shell 43 from the feed hopper. The spiral blades 44 rotate under the drive of the feed motor 41. The spiral blades 44 continuously drive the powder forward and thus enter the cylinder 3.

[0029] like Figure 1 , Figure 2 and Figure 5 As shown, the drive assembly 5 includes a drive motor 51, a second reducer 52, and a drive gear 53. The bottoms of both the drive motor 51 and the second reducer 52 are connected to the support plate 12. The drive motor 51 is connected to the second reducer 52. The second output shaft 521 of the second reducer 52 is connected to the drive gear 53. The drive gear 53 is located on the side of one end of the cylinder 3. A gear ring 54 is connected to the outer wall of the cylinder 3. The position of the gear ring 54 corresponds to the drive gear 53 and the gear ring 54 meshes with the drive gear 53. When the drive motor 51 works, it drives the drive gear 53 to rotate. The drive gear 53 drives the cylinder 3 to rotate by itself through the gear ring 54.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A ball mill for producing magnetic iron oxide, characterized in that, The device includes a support (1), two bearing seats (2) symmetrically arranged on the support (1), a cylinder (3) rotatably connected between the two bearing seats (2) and used to accommodate working balls, a feeding assembly (4) for feeding materials into the cylinder (3), and a driving assembly (5) for driving the cylinder (3) to rotate. The cylinder (3) is rotatably connected to the bearing seats (2) through a hollow tube (31). The top wall of the cylinder (3) is provided with an opening. A cover (7) for sealing the opening is detachably connected to the cylinder (3). A discharge hopper (13) is provided on the support (1) at a position corresponding to the opening of the cylinder (3). A dust cover (14) is provided on the support (1) at a position corresponding to the discharge hopper (13). A dust removal assembly (8) connected to the dust cover (14) and a power fan (9) connected to the dust removal assembly are provided on the support (1).

2. The ball mill for producing magnetic iron oxide according to claim 1, characterized in that, The dust removal assembly (8) includes a first dust collector (81) and a second dust collector (82) connected to the first dust collector (81). The first dust collector (81) is connected to the dust cover (14) through a first connecting pipe (801), and the second dust collector (82) is connected to the first dust collector (81) through a second connecting pipe (802). The power fan (9) is connected to the second dust collector (82) through a third connecting pipe (803).

3. The ball mill for producing magnetic iron oxide according to claim 2, characterized in that, The first connecting pipe (801) is provided with a first on / off valve (85), the third connecting pipe (803) is connected to the first connecting pipe (801) through a fourth connecting pipe (804), the fourth connecting pipe (804) is provided with a fourth on / off valve (84), and the third connecting pipe (803) is provided with a third on / off valve (83).

4. The ball mill for producing magnetic iron oxide according to claim 2, characterized in that, The dust cover (14) includes a first half cover (141) and a second half cover (142) respectively disposed on both sides of the cylinder (3). The first half cover (141) and the second half cover (142) are each provided with an air inlet (143) that communicates with the first connecting pipe (801).

5. The ball mill for producing magnetic iron oxide according to claim 1, characterized in that, The feeding assembly (4) includes a feeding motor (41) connected to a first reducer (42), a feeding shell (43) penetrating the hollow tube (31), and a spiral blade (44) disposed in the feeding shell (43) and connected to the first reducer (42).

6. The ball mill for producing magnetic iron oxide according to claim 1, characterized in that, The drive assembly (5) includes a drive motor (51), a second reducer (52) connected to the drive motor (51), and a drive gear (53) connected to the second reducer (52). The outer wall of the cylinder (3) is connected with a gear ring (54) corresponding to the drive gear (53).

7. The ball mill for producing magnetic iron oxide according to claim 1, characterized in that, The cylinder (3) includes a plurality of inner lining plates (32) disposed on its inner wall.

8. The ball mill for producing magnetic iron oxide according to claim 2, characterized in that, The first dust collector (81) is a cyclone dust collector, and the second dust collector (82) is a bag filter dust collector.

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