Coarse crushing device for soft magnet pre-sintering material

Abstract

A coarse crushing device for a soft magnet pre-sintering material belongs to the technical field of crushing equipment and comprises a base, an H-shaped support frame is mounted on the upper surface of the base, a fixed cylinder is fixedly mounted in the H-shaped support frame, a feed opening is formed in the lower surface of the fixed cylinder in a penetrating manner, an interlayer is arranged in the fixed cylinder, and a cooling pipe is fixedly mounted in the interlayer in a coiled manner; the water inlet end and the water drainage end of the cooling pipe are both arranged outside the fixed cylinder, the cooling pipe is connected with external cold water circulation supply equipment, a rotating cylinder with sieve holes is rotationally installed in the fixed cylinder, a plurality of steel balls are placed in the rotating cylinder, a hollow rotating connection shaft is fixedly installed at the left end of the rotating cylinder, and a solid rotating connection shaft is fixedly installed at the right end of the rotating cylinder. According to the pre-sintering material cooling device, heat generated during operation of steel balls in the rotary drum can be effectively cooled, it is ensured that the interior of the rotary drum is kept at a proper temperature, and the situation that the performance of pre-sintering materials is affected due to temperature rise during operation is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of crushing equipment, and in particular relates to a coarse crushing device for pre-sintered soft magnetic materials. Background Art

[0002] Soft magnetic pre-sintered material is an intermediate product used in the preparation of soft magnetic materials. It is typically obtained by pre-sintering various metal oxides or other related compounds. This pre-sintered material is subsequently processed into materials with specific soft magnetic properties, such as manganese-zinc ferrite and nickel-zinc ferrite. Before processing, the pre-sintered material is uniformly pulverized in a ball mill to enhance the material's sintering activity and ensure tighter particle bonding during sintering.

[0003] During operation, a ball mill finely grinds and pulverizes pre-calcined material through a continuous collision mechanism. During this process, the frequent collisions and friction between the grinding balls and the pre-calcined material particles generate significant heat, causing the temperature inside the rotating drum to gradually increase. As the temperature rises, the pre-calcined material undergoes thermal expansion. Notably, pre-calcined materials of varying chemical compositions have varying coefficients of thermal expansion. This characteristic is particularly pronounced during the pulverization process, where high temperatures can directly lead to unpredictable changes in particle size.

[0004] If the thermal expansion behavior of each particle in the pre-fired material is inconsistent, that is, if there is non-uniformity, it may induce stress concentration within the particles, and in extreme cases, even lead to the formation of microcracks. These microcracks, as potential defects, may have an adverse effect on the subsequent processing performance and final application of the pre-fired material.

[0005] In view of the above-mentioned problem of pre-sintered material performance caused by the temperature increase during the ball mill pulverization process, we have designed a coarse pulverization device for soft magnetic pre-sintered materials. Utility Model Content

[0006] In response to the problem of pre-sintered material performance being affected by temperature increases during the pulverization process in existing ball mills, the present invention provides a coarse pulverization device for soft magnetic pre-sintered material. This device can reduce the temperature within the fixed drum, and thereby the temperature of the rotating drum, through a cooling tube. It effectively cools the heat generated by the steel balls in the rotating drum during operation, ensuring that the interior of the drum maintains a suitable temperature and preventing the performance of the pre-sintered material from being affected by temperature increases during operation. This device effectively solves the problem of pre-sintered material performance degradation caused by temperature increases during the pulverization process in existing ball mills. The specific technical solution is as follows:

[0007] A coarse crushing device for pre-sintered soft magnetic materials comprises a base, an H-shaped support frame is fixedly installed on the upper surface of the base, a fixed cylinder is fixedly installed in the H-shaped support frame, a discharge port is penetrated through the lower surface of the fixed cylinder, and an interlayer is provided in the fixed cylinder, a cooling pipe is coiled and fixedly installed in the interlayer, the water inlet end and the drainage end of the cooling pipe are both arranged on the outside of the fixed cylinder, the cooling pipe is connected to an external cold water circulation supply equipment, a rotating drum with sieve holes is rotatably installed in the fixed cylinder, and a plurality of steel balls are placed in the rotating drum, a hollow transfer shaft is fixedly installed on the left end of the rotating drum, the hollow transfer shaft is connected to the rotating drum, a solid transfer shaft is fixedly installed on the right end of the rotating drum, the solid transfer shaft and the hollow transfer shaft are both rotatably connected to the H-shaped support frame, and a driving mechanism for driving the solid transfer shaft to rotate is installed on the upper surface of the base.

[0008] In the above technical solution, a lifting frame is fixedly installed on the left side of the H-shaped support frame, and a feed pipe is fixedly installed inside the lifting frame. The feed end of the feed pipe passes through the hollow adapter shaft and is located inside the rotating drum, and a one-centimeter gap is reserved between the outer surface of the feed pipe and the inner surface of the hollow adapter shaft;

[0009] In the above technical solution, a material removal gap of at least five centimeters is reserved between the outer surface of the rotating drum and the inner surface of the fixed drum, and a scraper is fixedly installed on the outer surface of the rotating drum, and the outer surface of the scraper is in contact with the inner surface of the fixed drum;

[0010] In the above technical solution, a material guide plate is rotatably installed in the H-shaped support frame, the material guide plate is located below the discharge port of the fixed cylinder, and at least two springs are fixedly installed between the material guide plate and the H-shaped support frame, and a vibration motor is fixedly installed on the lower surface of the front end of the material guide plate;

[0011] In the above technical solution, the driving mechanism includes a driving motor fixedly mounted on the upper surface of the base, the output shaft of the driving motor and the outer surface of the solid adapter shaft are both sleeved with sprockets, and a transmission chain is connected between the two sprockets.

[0012] Compared with the prior art, the coarse crushing device of the soft magnetic pre-sintered material of the utility model has the following beneficial effects:

[0013] This utility model uses a cooling tube to lower the temperature inside the fixed drum, thereby lowering the temperature of the rotating drum. It effectively cools the heat generated by the steel balls in the rotating drum during operation, ensuring that the interior of the drum maintains a suitable temperature and preventing the performance of the pre-sintered material from being affected by elevated temperatures during operation. This effectively solves the problem of deterioration in the performance of pre-sintered material caused by elevated temperatures during the pulverization process in conventional ball mills. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the fixed cylinder of the present utility model.

[0017] Figure 4 It is a schematic diagram of the bottom structure of the utility model.

[0018] Figure 5 This is a schematic diagram of the cooling pipe structure of the present utility model.

[0019] Figure 1-5 Among them: 1. base; 2. H-shaped support frame; 3. rotating drum; 31. solid adapter shaft; 32. hollow adapter shaft; 33. scraper; 4. fixed cylinder; 41. discharge port; 42. interlayer; 421. cooling pipe; 5. lifting frame; 6. feed pipe; 7. driving mechanism; 71. driving motor; 72. sprocket; 73. transmission chain; 8. guide plate; 81. spring; 82. vibration motor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In this embodiment, front, back, left, right, up and down are represented by Figure 1 Describes the datum. Figure 1-Figure 5 , the utility model provides a technical solution:

[0022] A coarse crushing device for soft magnetic pre-sintered material comprises a base 1, an H-shaped support frame 2 is fixedly installed on the upper surface of the base 1, a fixed cylinder 4 is fixedly installed in the H-shaped support frame 2, a discharge port 41 is penetrated on the lower surface of the fixed cylinder 4, and an interlayer 42 is provided in the fixed cylinder 4, a cooling pipe 421 is coiled and fixedly installed in the interlayer 42, the water inlet end and the drainage end of the cooling pipe 421 are both arranged on the outside of the fixed cylinder 4, the cooling pipe 421 is connected to an external cold water circulation supply device, a rotating cylinder 3 with sieve holes is rotatably installed in the fixed cylinder 4, and a plurality of steel balls are placed in the rotating cylinder 3, a hollow transfer shaft 32 is fixedly installed on the left end of the rotating cylinder 3, the hollow transfer shaft 32 is communicated with the rotating cylinder 3, a solid transfer shaft 31 is fixedly installed on the right end of the rotating cylinder 3, the solid transfer shaft 31 and the hollow transfer shaft 32 are both rotatably connected to the H-shaped support frame 2, and a driving mechanism 7 for driving the solid transfer shaft 31 to rotate is installed on the upper surface of the base 1;

[0023] Before use, an external cold water circulation supply device is used to circulate cold water into the cooling pipe 421 to reduce the temperature in the inner cavity of the fixed cylinder 4. After the cold air contacts the rotating cylinder 3, the temperature of the rotating cylinder 3 can be reduced. When in use, the soft magnet prefabricated material to be crushed is put into the rotating cylinder 3 through the cavity of the hollow adapter shaft 32. Thereafter, the driving mechanism 7 is used to drive the rotating cylinder 3 to rotate through the solid adapter shaft 31, driving the steel balls to impact the soft magnet prefabricated material in the rotating cylinder 3 to achieve crushing. The qualified soft magnet prefabricated material falls from the sieve holes of the rotating cylinder 3 into the fixed cylinder 4, and is finally discharged from the discharge port 41 of the fixed cylinder 4. Compared with the prior art, this device is equipped with a cooling pipe 421, which can cool the rotating cylinder 3 during the crushing process, thereby reducing the temperature of the soft magnet prefabricated material during crushing, and effectively avoiding the performance of the pre-sintered material being affected by the temperature increase during operation.

[0024] In addition, to facilitate loading, such as Figure 2 As shown, a lifting frame 5 is fixedly installed on the left side of the H-shaped support frame 2, and a feed pipe 6 is fixedly installed inside the lifting frame 5. The discharge end of the feed pipe 6 passes through the hollow adapter shaft 32 and is located inside the rotating drum 3, and a one-centimeter gap is reserved between the outer surface of the feed pipe 6 and the inner surface of the hollow adapter shaft 32, so that material can be loaded into the rotating drum 3 through the feed pipe 6.

[0025] In addition, in order to prevent the fine materials screened out from the sieve holes of the rotating drum 3 from adhering to the inner cavity side wall of the fixed drum 4 and causing blockage, Figure 3 As shown, a material discharge gap of at least five centimeters is reserved between the outer surface of the rotating drum 3 and the inner surface of the fixed drum 4, and a scraper 33 is fixedly installed on the outer surface of the rotating drum 3. The outer surface of the scraper 33 fits the inner surface of the fixed drum 4. When the rotating drum 3 rotates, the scraper 33 rotates on the inner wall of the fixed drum 4, effectively scraping off the fine material adhering to the side wall of the inner cavity, thereby preventing blockage.

[0026] In order to facilitate the collection of crushed soft magnet prefabricated materials, as shown in the figure Figure 2 and Figure 4 As shown, a guide plate 8 is rotatably installed in the H-shaped support frame 2, and the guide plate 8 is located below the discharge port 41 of the fixed cylinder 4, and at least two springs 81 are fixedly installed between the guide plate 8 and the H-shaped support frame 2. A vibration motor 82 is fixedly installed on the lower surface of the front end of the guide plate 8. The cooperation of the vibration motor 82 and the spring 81 can be used to drive the guide plate 8 to vibrate, so that the fallen soft magnet preforms can be quickly guided to the front of the device through the guide plate 8, which is convenient for collecting the crushed soft magnet preforms.

[0027] Finally, it should be noted that Figure 1As shown, the drive mechanism 7 includes a drive motor 71 fixedly mounted on the upper surface of the base 1. Sprockets 72 are mounted on the output shaft of the drive motor 71 and the outer surface of the solid adapter shaft 31. A transmission chain 73 is connected between the two sprockets 72. When the drive motor 71 is powered on, the sprocket 72 and transmission chain 73 work together to drive the solid adapter shaft 31 to rotate, thereby rotating the drum 3. During rotation, the drum 3 cooperates with the steel balls to perform the crushing operation.

Claims

1. A coarse crushing device for pre-sintered soft magnetic materials, comprising a base (1), characterized in that: An H-shaped support frame (2) is fixedly mounted on the upper surface of the base (1), a fixed cylinder (4) is fixedly mounted inside the H-shaped support frame (2), a feed opening (41) is provided through the lower surface of the fixed cylinder (4), and an interlayer (42) is provided inside the fixed cylinder (4), a cooling pipe (421) is fixedly mounted and coiled inside the interlayer (42), a water inlet end and a water outlet end of the cooling pipe (421) are both arranged outside the fixed cylinder (4), and the cooling pipe (421) is connected to an external cold water circulation supply device; A rotating drum (3) with sieve holes is rotatably mounted in the fixed drum (4), and a plurality of steel balls are placed in the rotating drum (3). A hollow transfer shaft (32) is fixedly mounted on the left end of the rotating drum (3), and the hollow transfer shaft (32) is connected to the rotating drum (3). A solid transfer shaft (31) is fixedly mounted on the right end of the rotating drum (3), and both the solid transfer shaft (31) and the hollow transfer shaft (32) are rotatably connected to the H-shaped support frame (2). A driving mechanism (7) for driving the solid adapter shaft (31) to rotate is installed on the upper surface of the base (1).

2. A coarse crushing device for pre-sintered soft magnetic material according to claim 1, characterized in that: A lifting frame (5) is fixedly installed on the left side of the H-shaped support frame (2), and a feeding pipe (6) is fixedly installed inside the lifting frame (5). The feeding end of the feeding pipe (6) passes through the hollow transfer shaft (32) and is located inside the rotating drum (3), and a one-centimeter gap is reserved between the outer surface of the feeding pipe (6) and the inner surface of the hollow transfer shaft (32).

3. The coarse crushing device for pre-sintered soft magnetic material according to claim 2, characterized in that: A material discharge gap of at least five centimeters is reserved between the outer surface of the rotating drum (3) and the inner surface of the fixed drum (4), and a scraper (33) is fixedly installed on the outer surface of the rotating drum (3), and the outer surface of the scraper (33) is in contact with the inner surface of the fixed drum (4).

4. The coarse crushing device for pre-sintered soft magnetic material according to claim 1, characterized in that: A material guide plate (8) is rotatably mounted in the H-shaped support frame (2). The material guide plate (8) is located below the material discharge port (41) of the fixed cylinder (4). At least two springs (81) are fixedly mounted between the material guide plate (8) and the H-shaped support frame (2). A vibration motor (82) is fixedly mounted on the lower surface of the front end of the material guide plate (8).

5. The coarse crushing device for pre-sintered soft magnetic material according to claim 1, characterized in that: The driving mechanism (7) comprises a driving motor (71) fixedly mounted on the upper surface of the base (1); the output shaft of the driving motor (71) and the outer surface of the solid adapter shaft (31) are both sleeved with sprockets (72); and a transmission chain (73) is connected between the two sprockets (72).

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