Grinding device for fine screening of magnetic powder

Abstract

The present application relates to the field of ore processing, especially to a kind of magnetic powder fine screening grinding device.The technical problem is to overcome the existing magnetic powder grinding device, it is difficult to separate fine magnetic powder and large particle magnetic ore in the process of grinding magnetic ore particles, so that fine magnetic powder is repeatedly ground, and the pressure of grinding head on magnetic ore particles is fixed in the process of grinding, so that the grinding efficiency is lower.A kind of magnetic powder fine screening grinding device, including shell;Two electric hydraulic cylinders are fixedly connected in the shell, two The telescopic rod of electric hydraulic cylinder is fixedly connected with grinding head, and the inside of grinding head is provided with cavity.Magnetic powder in grinding dish is extracted through adapter and grinding head cavity through powder extraction pipe, and the grinding dish is moved to the direction close to grinding head by the extrusion of ejector rod, so that fine magnetic powder and large particle magnetic ore can be separated conveniently and quickly, and the extrusion force of grinding head on magnetic ore can be increased, thereby improving the grinding efficiency of magnetic ore.

Description

Technical Field

[0001] This invention relates to the field of ore processing, and more particularly to a grinding device for magnetic particle fine screening. Background Technology

[0002] Magnetic powder is a type of hard magnetic single-domain particle. When combined with binders and solvents to form a magnetic paste, which is then coated onto the surface of a plastic or metal substrate (support), it can be used to create magnetic recording materials such as magnetic tapes, disks, and magnetic cards. In the preparation of magnetic materials, magnetic mineral particles are often ground into granular powder. Magnetic powder is the core component of magnetic coatings and a major factor determining the magnetic properties of magnetic recording media. However, existing magnetic powder grinding devices struggle to effectively separate finely ground magnetic powder from large magnetic mineral particles during the grinding process. This leads to repeated grinding of the fine powder, which can easily result in over-grinding. Furthermore, the fixed pressure exerted by the grinding head on the magnetic mineral particles during grinding results in low grinding efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned technical problems by providing a grinding device for fine screening of magnetic powder that can more conveniently and quickly separate finely ground magnetic powder from large magnetic ore particles through air extraction, and whose grinding dish reciprocates to increase the extrusion pressure of the grinding head on the magnetic ore, thereby improving the grinding efficiency of the magnetic ore.

[0004] Technical Solution: A grinding device for fine screening of magnetic powder includes a housing, within which two electric hydraulic cylinders are fixedly connected. A grinding head is fixedly connected between the telescopic rods of the two electric hydraulic cylinders. The grinding head has an internal cavity, and a powder extraction tube is fixedly connected to the grinding head, communicating with the internal cavity of the grinding head. A grinding dish is rotatably connected inside the housing. A motor is fixedly connected inside the housing, and its output shaft is slidably connected to the grinding dish. A powder suction control component is provided on the grinding head to control the communication between the grinding dish and the internal cavity of the grinding head. A grinding auxiliary component is provided inside the housing to increase the grinding pressure of the grinding head on the magnetic powder, thereby improving grinding efficiency.

[0005] Furthermore, particularly preferably, the powder suction control component includes an adapter, which comprises several rotating blocks and rotating rods. The top and bottom of each rotating block are flat, while the left and right sides are curved. The rotating blocks are interconnected by rotating rods, which are rotatably connected to the grinding head. Each rotating block has a bent hole, one end of which is located at the top or bottom flat surface of the rotating block, and the other end is located at the left or right curved surface of the rotating block. Through these bent holes, fine magnetic powder from the grinding dish can be drawn into the cavity of the grinding head. The rotating block rotates 180 degrees, which can connect or disconnect the grinding head cavity and the grinding dish. Two spur gears are fixedly connected to the end of the rotating rod away from the rotating block. The two spur gears are symmetrically arranged. Two sliding toothed rods are slidably connected to the grinding head. The lower part of the sliding toothed rod meshes with the spur gear. A return spring is connected between the two sliding toothed rods and the grinding head. Two spur gears are rotatably connected to the grinding head. The upper part of the sliding toothed rod meshes with the spur gear. Two fixed toothed rods are fixedly connected inside the outer shell. The fixed toothed rods mesh with the spur gear.

[0006] Furthermore, it is particularly preferred that the powder extraction tube is flexible.

[0007] Furthermore, it is particularly preferred that the grinding auxiliary component includes a top rod, two top rods are fixedly connected to the grinding dish, the two top rods are symmetrically arranged, a top ring is fixedly connected to the outer shell, and a tension spring is connected between the grinding dish and the outer shell.

[0008] Furthermore, it is particularly preferred that the outer shell is provided with a hammering component, which is used to hammer the grinding dish, thereby separating small and large magnetic powder particles in the grinding dish, so that the small magnetic powder particles can be better drawn away by the powder extraction tube, improving the grinding efficiency. The hammering component includes a mounting plate, and two mounting plates are fixedly connected inside the outer shell. Each mounting plate is rotatably connected to a pendulum. A torsion spring is connected between the pendulum and the mounting plate. An overrunning clutch is fixedly connected to the grinding dish, and a top plate is fixedly connected to the overrunning clutch.

[0009] Furthermore, it is particularly preferred that the grinding head is provided with a scraping component, which is used to scrape off the magnetic powder adsorbed on the inner wall of the grinding head cavity, so as to avoid the accumulation of magnetic powder in the grinding head cavity. The scraping component includes a scraping ring, which is rotatably connected to the grinding head. A spur gear three is fixedly connected to the scraping ring. A sliding toothed rod two is slidably connected to the grinding head. A limit groove is opened on the sliding toothed rod two. A pressure spring is connected between the sliding toothed rod two and the grinding head. A limit rod is slidably connected to the grinding head. The limit rod is fixedly connected to one of the sliding toothed rods one.

[0010] Furthermore, and particularly preferably, it also includes a feed hopper, which is fixedly connected to the grinding dish. The technical solution of the present invention is: Beneficial effects: 1. When the sliding gear moves, it meshes with the spur gear, causing the spur gear to rotate. The rotation of the spur gear causes the adapter to rotate 180 degrees, making the grinding head cavity connected to the grinding dish. The user can use the powder extraction tube to remove the magnetic powder from the grinding dish through the adapter and the grinding head cavity. During the rotation of the grinding dish, the top rod will contact the top ring, and the top ring will squeeze the top rod. The squeezed top rod will drive the grinding dish to move closer to the grinding head. In this way, finely ground magnetic powder can be quickly separated from large magnetic ore particles. Moreover, the reciprocating movement of the grinding dish increases the squeezing force of the grinding head on the magnetic ore, thereby improving the grinding efficiency of the magnetic ore.

[0011] 2. The rotation of the top plate will strike the pendulum, causing it to swing away from the grinding dish. The torsion spring is twisted, and after the top plate and the pendulum separate, the torsion spring returns to its original position, causing the pendulum to return to its original position. The pendulum will then strike the outer wall of the grinding dish, causing the magnetic mineral particles in the grinding dish to vibrate. During the vibration of the magnetic mineral particles, the finely ground magnetic powder will be better separated from the large magnetic mineral particles. In this way, the extraction efficiency of magnetic powder can be improved.

[0012] 3. The sliding rack two meshes with the spur gear three, causing the spur gear three to rotate. The rotation of the spur gear three will drive the scraper ring to rotate, and the rotation of the scraper ring will scrape the inner wall of the grinding head cavity, thereby scraping off the magnetic powder attached to the inner wall of the grinding head cavity. In this way, the magnetic powder adsorbed on the inner wall of the grinding head cavity can be scraped off, avoiding the accumulation of magnetic powder in the grinding head cavity and further improving the magnetic powder extraction efficiency. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a first cross-sectional perspective view of the outer casing of the present invention.

[0015] Figure 3This is a second cross-sectional perspective view of the outer casing of the present invention.

[0016] Figure 4 For the present invention Figure 3 Enlarged 3D structural diagram at point A.

[0017] Figure 5 This is a three-dimensional structural diagram of the grinding head, grinding dish, and powder extraction tube of the present invention.

[0018] Figure 6 This is a first cross-sectional three-dimensional structural diagram of the grinding head of the present invention.

[0019] Figure 7 This is a cross-sectional three-dimensional structural diagram of the adapter of the present invention.

[0020] Figure 8 This is a third cross-sectional perspective view of the outer casing of the present invention.

[0021] Figure 9 This is a second cross-sectional perspective view of the grinding head of the present invention.

[0022] Figure 10 This is a schematic diagram of the third cross-sectional three-dimensional structure of the grinding head of the present invention.

[0023] Figure 11 This is a schematic diagram of the fourth cross-sectional three-dimensional structure of the grinding head of the present invention.

[0024] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Electric hydraulic cylinder; 3. Grinding head; 4. Powder extraction pipe; 5. Grinding dish; 6. Motor; 71. Adapter; 72. First spur gear; 73. First sliding rack; 74. Return spring; 75. Second spur gear; 76. Fixed rack; 81. Top rod; 82. Top ring; 83. Tension spring; 91. Mounting plate; 92. Pendulum; 93. Torsion spring; 94. Overrunning clutch; 95. Top plate; 101. Scraper ring; 102. Third spur gear; 103. Second sliding rack; 104. Pressure spring; 105. Limiting rod; 11. Feed hopper. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1: A grinding device for magnetic powder fine screening, such as Figures 1-11As shown, the device includes an outer shell 1, inside which two electric hydraulic cylinders 2 are fixedly connected. A grinding head 3 is fixedly connected between the telescopic rods of the two electric hydraulic cylinders 2. The grinding head 3 is used to grind magnetic mineral particles. The grinding head 3 has an internal cavity. A powder extraction tube 4 is fixedly connected to the grinding head 3. The powder extraction tube 4 is used to extract fine magnetic powder and magnetic mineral particles. The powder extraction tube 4 is connected to the internal cavity of the grinding head 3. A grinding dish 5 is rotatably connected inside the outer shell 1. The grinding dish 5 is used to cooperate with the grinding head 3 to grind the magnetic mineral particles. A motor 6 is fixedly connected inside the outer shell 1. The output shaft of the motor 6 is slidably connected to the grinding dish 5. A powder suction control component is provided on the grinding head 3. The powder suction control component is used to control the communication between the grinding dish 5 and the internal cavity of the grinding head 3. A grinding auxiliary component is provided inside the outer shell 1. The grinding auxiliary component is used to increase the grinding pressure of the grinding head 3 on the magnetic powder and improve the grinding efficiency.

[0027] The powder suction control component includes an adapter 71, which comprises several rotating blocks and a rotating rod. The top and bottom of each rotating block are flat, while the left and right sides are curved. The rotating blocks are interconnected by the rotating rod, which is rotatably connected to the grinding head 3. Each rotating block has a bent hole, one end of which is located at the top or bottom flat surface of the rotating block, and the other end is located at the left or right curved surface of the rotating block. Through the bent holes on the rotating blocks, fine magnetic powder in the grinding dish 5 can be drawn into the cavity of the grinding head 3. By rotating the rotating block 180 degrees, the cavity of the grinding head 3 and the grinding dish 5 can be connected or disconnected. The rotating rod moves away from the rotating block. Two spur gears 72 are fixedly connected to one end of each moving block. The two spur gears 72 are symmetrically arranged. Two sliding toothed rods 73 are slidably connected to the grinding head 3. The lower part of the sliding toothed rods 73 meshes with the spur gears 72. A return spring 74 is connected between each of the two sliding toothed rods 73 and the grinding head 3. Two spur gears 75 are rotatably connected to the grinding head 3. The upper part of the sliding toothed rods 73 meshes with the spur gears 75. Two fixed toothed rods 76 are welded inside the outer shell 1. The fixed toothed rods 76 mesh with the spur gears 75. The rotation of the spur gears 72 will drive the adapter 71 to rotate, thereby switching the communication state between the cavity inside the grinding head 3 and the grinding dish 5.

[0028] The powder extraction tube 4 is telescopic, which can better adapt to the movement of the grinding head.

[0029] The grinding auxiliary component includes a top rod 81. Two top rods 81 are welded onto the grinding dish 5 and are arranged symmetrically. A top ring 82 is fixedly welded onto the outer shell 1 and is located below the top rods 81. A tension spring 83 connects the grinding dish 5 and the outer shell 1. When the top rods 81 are squeezed, they will drive the grinding dish 5 to move closer to the grinding head 3, increasing the squeezing force of the grinding head 3 on the magnetic ore, thereby improving the grinding efficiency.

[0030] Initially, the fixed rack 76 and the second spur gear 75 mesh, the return spring 74 is compressed, and the adapter 71 separates the cavity of the grinding head 3 from the grinding dish 5. During operation, the user activates the electric hydraulic cylinder 2, which shortens its extension rod, causing the grinding head 3 to move away from the grinding dish 5. This movement of the grinding head 3 moves the second spur gear 75, which meshes with the fixed rack 76, causing it to rotate. This rotation then meshes with the first sliding rack 73, causing it to extend beyond the grinding head 3. The movement of the first sliding rack 73 then meshes with the first spur gear 72, causing it to rotate. When wheel 72 rotates, the adapter rotates 180 degrees, connecting the cavity of grinding head 3 to the grinding dish 5. Return spring 74 returns to its original position, and the telescopic rod of electric hydraulic cylinder 2 stops shortening. At this point, grinding head 3 is not yet detached from the inner wall of grinding dish 5. The user can use the powder extraction pipe 4 to evacuate the magnetic powder from grinding dish 5 through adapter 71 and the cavity of grinding head 3. The telescopic rod of electric hydraulic cylinder 2 continues to shorten, disengaging the spur gear 75 from the fixed gear 76. Grinding head 3 continues to move away from grinding dish 5, detaching from it. After moving a certain distance, the telescopic rod of electric hydraulic cylinder 2 stops moving, and the user can feed the magnetic mineral particles to be ground through the feed hopper. 11. Pour into the grinding dish 5. Then, the user starts the motor 6 and extends and resets the telescopic rod of the electric hydraulic cylinder 2. The output shaft of the motor 6 rotates, which drives the grinding dish 5 to rotate. The extension and reset of the telescopic rod of the electric hydraulic cylinder 2 drives the grinding head 3 to reset. The reset of the grinding head 3 drives the second spur gear 75 to reset. The second spur gear 75 will re-engage with the fixed gear 76, causing the second spur gear 75 to reverse. The reverse rotation of the second spur gear 75 drives the first sliding gear 73 to reset. The reset of the first sliding gear 73 will engage with the first spur gear 72, causing the first spur gear 72 to reverse. The reverse rotation of the first spur gear 72 drives the adapter 71 to reverse 180 degrees, thereby isolating the cavity of the grinding head 3 from the grinding dish 5. At this time, the electric... When the extension rod of the hydraulic cylinder 2 stops extending, the magnetic mineral particles in the grinding dish 5 are squeezed and ground by the grinding head 3 during the rotation of the grinding dish 5. During the rotation of the grinding dish 5, the top rod 81 will contact the top ring 82, and the top ring 82 will squeeze the top rod 81. The compression of the top rod 81 will drive the grinding dish 5 to move closer to the grinding head 3. The tension spring is stretched. After the top ring 82 and the top rod 81 are separated, the tension spring 83 resets and drives the grinding dish 5 to reset. This reciprocating movement can conveniently and quickly separate the finely ground magnetic powder from the large magnetic mineral particles. Moreover, the reciprocating movement of the grinding dish 5 increases the squeezing force of the grinding head 3 on the magnetic mineral, thereby improving the grinding efficiency of the magnetic mineral.

[0031] Example 2: Based on Example 1, such as Figures 3-9As shown, the outer shell 1 is equipped with a hammering component, which is used to hammer the grinding dish 5, thereby separating small and large magnetic powder particles in the grinding dish 5. This allows the small magnetic powder particles to be better drawn away by the powder extraction tube 4, improving grinding efficiency. The hammering component includes a mounting plate 91. Two mounting plates 91 are welded inside the outer shell 1. Each mounting plate 91 is rotatably connected to a pendulum 92. A torsion spring 93 connects the pendulum 92 and the mounting plate 91. An overrunning clutch 94 is fixedly connected to the grinding dish 5. A top plate 95 is fixedly connected to the overrunning clutch 94. When the top plate 95 rotates, it will strike the pendulum 92. When the pendulum 92 is struck, it will swing away from the grinding dish 5. The torsion spring 93 is twisted. After the top plate 95 and the pendulum 92 are disengaged, the torsion spring 93 returns to its original position, causing the pendulum 92 to return to its original position. The pendulum 92 will then hammer the outer wall of the grinding dish 5.

[0032] The rotation of the grinding dish 5 drives the overrunning clutch 94 to rotate. The rotation of the overrunning clutch 94 restricts the top plate 95, which is held in place by the pendulum 92. Due to the unidirectional rotation of the overrunning clutch 94, it will idle. During the extraction of magnetic powder, the output shaft of the motor 6 reverses, causing the grinding dish 5 to reverse. The reverse rotation of the grinding dish 5 drives the overrunning clutch 94 to reverse, which in turn drives the top plate 95 to rotate. The rotation of the top plate 95 strikes the pendulum 92, causing it to swing away from the grinding dish 5. The torsion spring 93 is torsionped. After the top plate 95 and the pendulum 92 disengage, the torsion spring 93 resets, causing the pendulum 92 to reset as well. The pendulum 92 then strikes the outer wall of the grinding dish 5, causing the magnetic mineral particles in the grinding dish 5 to vibrate. During this vibration, the finely ground magnetic powder is better separated from the larger magnetic mineral particles, thus improving the extraction efficiency of the magnetic powder.

[0033] Example 3: Based on Example 2, such as Figures 9-11As shown, the grinding head 3 is equipped with a scraping component, which is used to scrape off the magnetic powder adsorbed on the inner wall of the cavity of the grinding head 3, so as to avoid the accumulation of magnetic powder in the cavity of the grinding head 3. The scraping component includes a scraping ring 101, which is rotatably connected to the grinding head 3. The scraping ring 101 is located in the cavity of the grinding head 3. A spur gear 102 is fixedly connected to the scraping ring 101. A sliding gear 103 is slidably connected to the grinding head 3. A limiting groove is opened on the sliding toothed rod 103. A pressure spring 104 is connected between the sliding toothed rod 103 and the grinding head 3. A limiting rod 105 is slidably connected inside the grinding head 3. The limiting rod 105 is located below the sliding toothed rod 103. The limiting rod 105 is fixedly connected to one of the sliding toothed rods 73. When the scraping ring 101 rotates, it scrapes the inner wall of the cavity of the grinding head 3, thereby scraping off the magnetic powder attached to the inner wall of the cavity of the grinding head 3.

[0034] It also includes a feed hopper 11, which is fixedly connected to the grinding dish 5.

[0035] As the sliding rack 1 73 extends out of the grinding head 3, it drives the limiting rod 105 to move closer to the sliding rack 2 103. The limiting rod 105 compresses the sliding rack 2 103, causing it to move closer to the spur gear 3 102. The pressure spring 104 is compressed, and the sliding rack 2 103 meshes with the spur gear 3 102, causing the spur gear 3 102 to rotate. The rotation of the spur gear 3 102 drives the scraper ring 101. When the scraper ring 101 rotates, it scrapes the inner wall of the cavity of the grinding head 3, thereby scraping off the magnetic powder adhering to the inner wall of the cavity of the grinding head 3. The sliding toothed rod 73 resets, causing the limiting rod 105 to reset. After the limiting rod 105 and the sliding toothed rod 103 disengage, the pressure spring 104 resets, causing the sliding toothed rod 103 to reset. In this way, the magnetic powder adsorbed on the inner wall of the cavity of the grinding head 3 can be scraped off, avoiding the accumulation of magnetic powder in the cavity of the grinding head 3 and further improving the magnetic powder extraction efficiency.

[0036] It should be understood that this embodiment is for illustrative purposes only and is not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

Claims

1. A grinding device for magnetic particle fine screening, characterized in that, The device includes an outer shell (1), inside which two electric hydraulic cylinders (2) are fixedly connected. A grinding head (3) is fixedly connected between the telescopic rods of the two electric hydraulic cylinders (2). The grinding head (3) has an internal cavity. A powder extraction tube (4) is fixedly connected to the grinding head (3). The powder extraction tube (4) communicates with the internal cavity of the grinding head (3). A grinding dish (5) is rotatably connected inside the outer shell (1). A motor (6) is fixedly connected inside the outer shell (1). The output shaft of the motor (6) is slidably connected to the grinding dish (5). A powder suction control component is provided on the grinding head (3). The powder suction control component is used to control the communication between the grinding dish (5) and the internal cavity of the grinding head (3). A grinding auxiliary component is provided inside the outer shell (1). The grinding auxiliary component is used to enhance the grinding pressure of the grinding head (3) on the magnetic powder and improve the grinding efficiency. The powder suction control component includes an adapter (71), which comprises several rotating blocks and a rotating rod. The top and bottom of the rotating blocks are flat, and the left and right sides are curved. The rotating blocks are interconnected by the rotating rod, which is rotatably connected to the grinding head (3). Each of the rotating blocks has a bent hole, one end of which is located at the top or bottom flat surface of the rotating block, and the other end of which is located at the left or right curved surface of the rotating block. Through the bent holes on the rotating blocks, fine magnetic powder in the grinding dish (5) can be drawn into the cavity of the grinding head (3). By rotating the rotating blocks 180 degrees, the cavity of the grinding head (3) and the grinding dish (5) can be connected. The two spur gears (72) are fixedly connected to the end of the rotating rod away from the rotating block, and the two spur gears (72) are symmetrically arranged. Two sliding toothed rods (73) are slidably connected to the grinding head (3). The lower part of the sliding toothed rod (73) meshes with the spur gear (72). A return spring (74) is connected between the two sliding toothed rods (73) and the grinding head (3). Two spur gears (75) are rotatably connected to the grinding head (3). The upper part of the sliding toothed rod (73) meshes with the spur gear (75). Two fixed toothed rods (76) are fixedly connected inside the outer shell (1). The fixed toothed rods (76) mesh with the spur gears (75). The grinding auxiliary component includes a top rod (81), two top rods (81) are fixedly connected to the grinding dish (5), the two top rods (81) are symmetrically arranged, a top ring (82) is fixedly connected to the outer shell (1), and a tension spring (83) is connected between the grinding dish (5) and the outer shell (1).

2. The grinding device for magnetic particle fine screening as described in claim 1, characterized in that, The powder extraction tube (4) is flexible.

3. The grinding device for magnetic particle fine screening as described in claim 2, characterized in that, The outer shell (1) is provided with a hammering component, which is used to hammer the grinding dish (5) to separate the small magnetic powder particles and large magnetic powder particles in the grinding dish (5), so that the small magnetic powder particles can be better drawn away by the powder extraction tube (4) and improve the grinding efficiency. The hammering component includes a mounting plate (91). Two mounting plates (91) are fixedly connected inside the outer shell (1). Each mounting plate (91) is rotatably connected with a pendulum (92). A torsion spring (93) is connected between the pendulum (92) and the mounting plate (91). An overrunning clutch (94) is fixedly connected to the grinding dish (5). A top plate (95) is fixedly connected to the overrunning clutch (94).

4. The grinding device for magnetic particle fine screening as described in claim 3, characterized in that, The grinding head (3) is provided with a scraping component, which is used to scrape off the magnetic powder adsorbed on the inner wall of the cavity of the grinding head (3) to avoid the accumulation of magnetic powder in the cavity of the grinding head (3). The scraping component includes a scraping ring (101), which is rotatably connected to the grinding head (3). A spur gear three (102) is fixedly connected to the scraping ring (101). A sliding toothed rod two (103) is slidably connected to the grinding head (3). A limit groove is opened on the sliding toothed rod two (103). A pressure spring (104) is connected between the sliding toothed rod two (103) and the grinding head (3). A limit rod (105) is slidably connected to the grinding head (3). The limit rod (105) is fixedly connected to one of the sliding toothed rods one (73).

5. The grinding apparatus for magnetic particle fine screening as described in claim 4, characterized in that, It also includes a feed hopper (11), which is fixedly connected to the grinding dish (5).

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