A strong mixing and ball milling device for permanent magnet ferrite pre-sintered material

Abstract

The present invention provides a strong mixing and ball milling device for permanent magnet ferrite pre-sintered materials, belonging to the technical field of powder mixing, and is used to solve the technical problems of low efficiency and high cost in the process of preparing permanent magnet ferrite, where the raw material crushing and stirring steps are carried out separately. The device includes a rotating cylinder, end covers, a conveyor belt, a number of stirring rods and an adjusting mechanism. The conveyor belt is installed inside the rotating cylinder, the power mechanism is located on one side of the conveyor belt, the adjusting mechanism is located on the other side of the conveyor belt, the stirring rods are connected to the adjusting mechanism, the end covers are provided with a feeding mechanism, a number of partition plates are fixed on the frame of the conveyor belt, and an auxiliary mixing mechanism is provided on the discharge pipe. The present invention crushes two kinds of materials at the same time, ensures that the output speeds of the two kinds of materials can be stabilized at a certain ratio, does not require subsequent stirring, can reduce costs and improve efficiency; can adjust the feeding distribution ratio according to different raw material ratios or different raw materials, is more flexible and changeable in use, and has a wider application range.

Description

Technical Field

[0001] The present invention belongs to the technical field of powder mixing, and relates to a ball milling device, in particular to a strong mixing ball milling device for permanent magnet ferrite pre-sintered materials. Background Art

[0002] Magnetic materials are basic functional materials in the electronics industry. As an important part of magnetic materials, permanent magnet materials play an important role in industries such as the electronics industry, information industry, motorcycle industry, power tool industry, and automotive industry. Permanent magnet ferrite materials are functional materials that generate magnetic fields;

[0003] Permanent magnet ferrite is made by mixing multiple raw materials. Among them, strontium oxide and iron(III) oxide account for a relatively large proportion in the raw materials. In addition, very small amounts of additives such as aluminum(III) oxide, silicon dioxide, and calcium oxide are also required to improve the quality of permanent magnet ferrite. During the manufacturing process, these raw materials need to go through steps such as ball milling and pulverization, mixing and stirring, sintering, and magnetization. Since the hardness and toughness of strontium oxide and iron(III) oxide are different, if strontium oxide and iron(III) oxide are simultaneously fed into the ball mill in a certain proportion, when pulverizing in a continuous ball mill, the relatively soft strontium oxide will be pulverized first, resulting in the harder iron(III) oxide remaining in the ball mill. Eventually, the mixed powder of strontium oxide and iron(III) oxide output from the discharge pipe of the continuous ball mill is not mixed according to the preset proportion. Therefore, the existing production process requires separate ball milling of strontium oxide and iron(III) oxide, and then mixing and stirring, which takes a long time and requires a separate mixing and stirring device, resulting in a high cost.

[0004] Based on this, we have designed a strong mixing ball milling device for permanent magnet ferrite pre-sintered materials. Summary of the Invention

[0005] The object of the present invention is to address the above problems existing in the prior art and propose a strong mixing ball milling device for permanent magnet ferrite pre-sintered materials. The technical problem to be solved by this device is: how to improve the pulverization and mixing efficiency of permanent magnet ferrite raw materials.

[0006] The object of the present invention can be achieved by the following technical solutions:

[0007] A strong mixing and ball milling device for permanent magnet ferrite pre-sintered materials, comprising a base, a rotating cylinder with steel balls inside, a conveyor belt, a power mechanism, a number of dial rods and an adjustment mechanism. End covers are respectively rotatably arranged at both ends of the rotating cylinder, and the end covers are connected to the rotating cylinder through bearings. An inlet pipe and an outlet pipe are respectively connected to the two end covers. Two support frames are fixed on the base, and the two support frames are respectively fixedly connected to the inlet pipe and the outlet pipe. The conveyor belt is installed inside the rotating cylinder. The power mechanism is located on one side of the conveyor belt and is used to drive the conveyor belt to run. The adjustment mechanism is located on the other side of the conveyor belt. The dial rod is connected to the adjustment mechanism and is located above the conveyor belt. An inlet port is opened on the end cover close to the inlet pipe, and a feeding mechanism is arranged at the inlet port. A number of partition plates are fixed on the frame of the conveyor belt. Through holes are opened on the partition plates, and the aperture of the through holes on the partition plates closer to the outlet pipe is smaller. The partition plates and the dial rods are distributed alternately. An auxiliary mixing mechanism for mixing small-dose additives is arranged on the outlet pipe. A large gear ring is fixed on the outside of the rotating cylinder, and a driving motor is arranged on the base. A speed reducer is connected to the output shaft of the driving motor, and a driving gear meshing with the large gear ring is connected to the speed reducer.

[0008] The working principle of the present invention is as follows: During use, the driving motor provides power to drive the rotating cylinder to rotate. The raw material iron oxide to be pulverized is input through the feed pipe, and strontium oxide is input into the rotating cylinder through the feeding mechanism. The iron oxide and strontium oxide are input into the interior of the rotating cylinder in a certain proportion. The discharge pipe is externally connected to a cyclone dust collector for pneumatic suction discharge. During operation, the steel balls collide with the materials for pulverization. The pulverized materials gradually pass through several partition plates and are finally mixed with additives in the auxiliary mixing mechanism and discharged from the discharge pipe. Moreover, the conveyor belt is located obliquely above the interior of the rotating cylinder, and the steel balls will not collide with the conveyor belt during movement. Strontium oxide enters the conveyor belt through the feeding mechanism and then moves forward along the conveyor belt. When passing through the dial rod, a part of it will be dialed down by the dial rod and enter between the two partition plates corresponding to the dial rod for pulverization. The angle of the dial rod can be adjusted through the adjustment mechanism, so that strontium oxide is distributed at different positions in the rotating cylinder in different proportions. When a large amount of strontium oxide is located at one end of the rotating cylinder close to the feed pipe, the speed of the steel balls crushing and grinding the relatively soft strontium oxide will be faster. This will result in the accumulation of iron oxide in the rotating cylinder, causing the proportion of strontium oxide in the mixed materials output from the discharge pipe to be too large. When a large amount of strontium oxide is located at one end of the rotating cylinder close to the feed pipe, at this time, the iron oxide has been fully ground before, with a small volume. Although its grinding speed is slow, its speed of reaching the specified particle size is faster. Therefore, the influence of strontium oxide on the grinding speed of iron oxide is small at this time. However, strontium oxide has not been fully ground before, with a large volume. Even if its grinding speed is fast, the time for it to reach the specified particle size will be long. At this time, the powder output speed of strontium oxide is small, resulting in a small proportion of strontium oxide in the mixed materials output from the discharge pipe. Moreover, the accumulation of a large amount of strontium oxide in the rotating cylinder will cause the rotating cylinder to be overloaded and damaged or jammed. Therefore, through the adjustment mechanism, strontium oxide is fed into the rotating cylinder in a certain proportion, so that the powder output speed of strontium oxide can be balanced with the powder output speed of iron oxide, making the proportion of the two raw materials in the continuously output mixed materials more reasonable, and eliminating the need for subsequent stirring, saving time and cost.

[0009] A number of reinforcing rings are fixed on the outer side of the rotating cylinder, and the reinforcing rings are evenly distributed. Two symmetrically distributed support seats are arranged on both sides of the base, and support rollers are rotatably arranged on the support seats. The support rollers are in contact with the reinforcing rings. Steel pipes are connected between the partition plates and between the partition plates and the end caps. A number of reinforcing ribs are fixed inside the rotating cylinder, and gaps are provided between the reinforcing ribs. The edges of the partition plates are located in the gaps at the corresponding positions.

[0010] With the above structure, the reinforcing ring and the reinforcing ribs can improve the strength of the rotating cylinder, prevent the deformation of the rotating cylinder, the supporting rollers can improve the load-bearing capacity of the rotating cylinder, increase the processing volume of the rotating cylinder, and also prevent the deformation of the rotating cylinder. The edge of the partition plate is resisted by the reinforcing ribs on both sides, which can prevent the partition plate from deforming when the steel balls hit the partition plate during the movement, improve the service life of the partition plate, and reduce the maintenance rate of the equipment.

[0011] The power mechanism includes a fixed cover, a power shaft and a transport motor. The fixed cover is fixed to the side end of the conveyor belt. The power shaft is rotatably arranged in the fixed cover. The transport motor is fixed to the end cover and is used to drive the power shaft to rotate. The power shaft and the driving roller of the conveyor belt are connected by a bevel gear pair.

[0012] With the above structure, the transport motor is located outside the rotating cylinder, which can prevent the dust inside the rotating cylinder from affecting the use of the transport motor, improve the service life of the transport motor, and also facilitate the maintenance and repair of the transport motor.

[0013] The adjusting mechanism includes a dust-proof cover, an adjusting shaft and an electric push rod. The dust-proof cover is fixed to the other side of the conveyor belt. The adjusting shaft is rotatably arranged inside the dust-proof cover. A number of first gears are fixed on the adjusting shaft. One end of the adjusting shaft penetrates through one of the end covers. The electric push rod is fixed to this end cover and is parallel to the adjusting shaft. A connecting plate is fixed to the output shaft of the electric push rod and is rotatably connected to the end of the adjusting shaft. An adjusting motor is fixed to the other end cover, and a first rotating plate is fixed to the output shaft of the adjusting motor. A number of circumferentially distributed sliding rods are fixed on the first rotating plate. A second rotating plate is fixed to the end of the adjusting shaft close to the first rotating plate. A number of circumferentially distributed sliding holes are formed on the second rotating plate, and the sliding rods penetrate through the corresponding sliding holes. A rotating shaft is fixed to the lever. A number of rotating holes are formed on the dust-proof cover, and the rotating shaft is rotatably arranged in the corresponding rotating holes. A second gear matching the first gear is fixed to the end of the rotating shaft located inside the dust-proof cover. One of the second gears meshes with the first gear, and the remaining second gears are offset from their corresponding first gears. A stabilizing component is provided on the rotating shaft.

[0014] With the above structure, the extension and contraction of the electric push rod can control the lateral movement of the adjusting shaft, drive different first gears to mesh with their corresponding second gears. Then, the adjusting motor rotates, driving the first rotating plate. The first rotating plate drives the adjusting shaft to rotate through the second rotating plate and a number of sliding rods, and then drives the corresponding lever to rotate through the first gear and the second gear to adjust the angle of the lever.

[0015] The stable component includes a spring, a moving ring and a limiting block. The moving ring is slidably sleeved on the rotating shaft, the spring is sleeved on the rotating shaft, a shoulder is fixed at the upper end of the rotating shaft, both ends of the spring abut against the shoulder and the upper surface of the moving ring respectively, the limiting block is fixed at the side end of the moving ring, a straight groove is formed at the side end of the lever near the rotating shaft, the limiting block is located inside the straight groove, and chamfers are arranged at the upper and lower ends of the straight groove. A plurality of convex teeth evenly distributed in a circumferential direction are fixed on the lower surface of the moving ring, a plurality of toothed rings are fixed on the upper surface of the dust cover, and the toothed rings are located directly below the moving rings at corresponding positions, and the upper surface of the toothed ring meshes with the plurality of convex teeth.

[0016] With the above structure, the moving ring is sleeved on the rotating shaft, and the limiting block is located inside the straight groove, so that the moving ring cannot rotate around the axis of the rotating shaft. Under the thrust of the spring, the moving ring abuts against the toothed ring. Under the action of the convex teeth, there is a large rotational resistance between the toothed ring and the moving ring, which can ensure that the moving ring and the lever are more stable and will not be pushed by the materials moving on the conveyor belt, resulting in the angle deviation of the lever, and finally resulting in strontium oxide not being conveyed to different positions of the rotating cylinder according to the set ratio.

[0017] The feeding mechanism includes a feeding hopper, a feeding motor and a rotating rod. The feeding hopper is fixed on the end cover, and the inner side of the feeding hopper is communicated with the feeding port. The rotating rod is rotatably arranged in the feeding hopper. The feeding motor is fixed at the side end of the feeding hopper. A plurality of support rods are fixed on the outer side of the rotating rod. A jack is formed at one end of the rotating rod near the feeding motor, and the output shaft of the feeding motor is slidably inserted into the jack. A fixed ring is fixed on one side of the feeding hopper away from the feeding motor. One end of the rotating rod away from the feeding motor is located inside the fixed ring, and a fixed block is fixed on the inner side of the fixed ring. A curved groove is formed on the rotating rod, and the curved groove is connected end to end. The fixed block is located in the curved groove.

[0018] With the above structure, the rotating rod rotates driven by the feeding motor, drives a plurality of support rods to stir the materials in the feeding hopper upward, prevents the materials from jamming, and spreads the materials flat on the conveyor belt. Moreover, during the rotation of the rotating rod, the interaction between the fixed block and the curved groove causes the rotating rod to reciprocate in the horizontal direction, making the effect of the support rods better and further preventing the materials from jamming.

[0019] The auxiliary mixing mechanism includes a necking hopper fixed inside the discharge pipe, and a cyclone guide plate is arranged inside the necking hopper. A plurality of cylinders are fixed on the inner side of the end cover, and the plurality of cylinders are evenly distributed in a circumferential direction outside the discharge pipe. An anti-collision plate is fixed at the end of the cylinder. A plurality of through grooves are formed on the anti-collision plate. A round hole is formed on the end cover close to the discharge pipe, and the round hole is communicated with the inner side of the steel pipe. A special-shaped pipe is fixed on the steel pipe, and the diameter of one end of the special-shaped pipe located inside the steel pipe is larger, and this end extends outward from the round hole. A plurality of adding pipes are detachably connected to this end, and one-way valves are connected to the adding pipes. The other end of the special-shaped pipe extends to the axis position of the discharge pipe, and a diffusion plate is connected to this end.

[0020] With the above structure, various additives to be added are transported into the special-shaped pipe through the pneumatic conveying device via the addition pipe, enter the opening of the discharge pipe from the diffusion plate, and then are discharged through the discharge pipe together with the crushed materials in the rotating cylinder. When the mixed materials move in the discharge pipe, the additives diffuse, and other powder materials are extruded towards the middle and rotate under the action of the cyclone guide plate, which can make the additives and other powder materials fully mixed, improve the mixing degree between the powder materials, and the one-way valve is located outside the rotating cylinder, which is convenient for disassembly and cleaning.

[0021] Compared with the prior art, the strong mixing and ball milling device for the permanent ferrite pre-sintered material has the following advantages:

[0022] 1. Through the rotating cylinder, the partition plate, the conveyor belt and the dial rod, the materials that are easy to crush are dispersed and input to different positions of the rotating cylinder according to a certain proportion, and two materials are crushed at the same time, ensuring that the output speeds of the two materials can be stabilized at a certain proportion, without subsequent stirring, which can reduce costs and improve efficiency.

[0023] 2. Through the adjusting mechanism, the angle of the dial rod is adjusted, and the feeding distribution ratio can be adjusted according to different raw material ratios or different raw materials, making it more flexible and changeable in use and having a wider application range.

[0024] 3. Through the feeding mechanism, the materials are laid flat on the conveyor belt, and the materials can be prevented from being stuck.

[0025] 4. Through the auxiliary mixing mechanism, the additives are added to the powder materials and the mixed powder materials are stirred, making the mixed powder materials more evenly mixed. Description of the Drawings

[0026] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0027] Figure 2 is the structure schematic diagram inside the rotating cylinder of the present invention;

[0028] Figure 3 is the cross-sectional structure schematic diagram of the rotating cylinder of the present invention;

[0029] Figure 4 is the partial structure schematic diagram of the present invention;

[0030] Figure 5 is the partial structure schematic diagram of the adjusting mechanism of the present invention;

[0031] Figure 6 is the structure schematic diagram of the stabilizing component of the present invention;

[0032] Figure 7 is the partial structure schematic diagram of the stabilizing component of the present invention;

[0033] Figure 8 It is a partial structural schematic diagram of the dust cover in the present invention;

[0034] Figure 9 It is a structural schematic diagram of the feeding mechanism in the present invention;

[0035] Figure 10 It is an internal structural schematic diagram of the feeding structure in the present invention;

[0036] Figure 11 It is a structural schematic diagram of the bending groove of the fixing ring in the present invention;

[0037] Figure 12 It is a structural schematic diagram of the auxiliary mixing mechanism in the present invention;

[0038] Figure 13 It is a structural schematic diagram of the special-shaped pipe in the present invention;

[0039] In the figure: 1, base; 2, rotating cylinder; 3, end cover; 4, feeding pipe; 5, discharging pipe; 6, support frame; 7, feeding port; 8, conveyor belt; 9, power mechanism; 901, fixed cover; 902, power shaft; 903, transport motor; 904, bevel gear pair; 10, lever; 11, adjusting mechanism; 1101, dust cover; 1102, adjusting shaft; 1103, adjusting motor; 1104, first rotating plate; 1105, sliding rod; 1106, second rotating plate; 1107, first gear; 1108, electric push rod; 1109, connecting plate; 1110, rotating shaft; 1111, moving ring; 1112, spring; 1113, limiting block; 1114, straight groove; 1115, convex teeth; 1116, rotating hole; 1117, toothed ring; 1118, second gear; 12, feeding mechanism; 1201, feeding hopper; 1202, rotating rod; 1203, support rod; 1204, feeding motor; 1205, jack; 1206, fixing ring; 1207, fixing block; 1208, bending groove; 13, auxiliary mixing mechanism; 1301, closing hopper; 1302, cyclone guide plate; 1303, special-shaped pipe; 1304, diffusion plate; 1305, adding pipe; 1306, one-way valve; 1307, anti-collision plate; 1308, cylinder; 14, large gear ring; 15, driving motor; 16, reinforcing ring; 17, support seat; 18, support roller; 19, steel pipe; 20, reinforcing rib; 21, gap; 22, partition plate. Specific embodiments

[0040] The technical solutions of this patent will be further described in detail below in conjunction with specific embodiments.

[0041] The embodiments of the present patent will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present patent and should not be construed as a limitation of the present patent.

[0042] In the description of the present patent, it should be understood that the orientation or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present patent.

[0043] In the description of the present patent, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present patent can be understood according to specific circumstances.

[0044] Please refer to Figures 1-13, this embodiment provides a strong mixing and ball milling device for permanent magnet ferrite pre-sintered materials, including a base 1, a rotating cylinder 2 with internal steel balls, a conveyor belt 8, a power mechanism 9, a number of stirring rods 10 and an adjusting mechanism 11. End covers 3 are rotatably arranged at both ends of the rotating cylinder 2, and the end covers 3 are connected to the rotating cylinder 2 through bearings. A feed pipe 4 and a discharge pipe 5 are respectively connected to the two end covers 3. Two support frames 6 are fixed on the base 1, and the two support frames 6 are respectively fixedly connected to the feed pipe 4 and the discharge pipe 5. The conveyor belt 8 is installed inside the rotating cylinder 2. The power mechanism 9 is located on one side of the conveyor belt 8 and is used to drive the conveyor belt 8 to operate. The adjusting mechanism 11 is located on the other side of the conveyor belt 8. The stirring rod 10 is connected to the adjusting mechanism 11, and the stirring rod 10 is located above the conveyor belt 8. A feed port 7 is opened on the end cover 3 close to the feed pipe 4, and a feeding mechanism 12 is provided at the feed port 7. A number of partition plates 22 are fixed on the frame of the conveyor belt 8. Through holes are opened on the partition plates 22, and the aperture of the through holes on the partition plates 22 closer to the discharge pipe 5 is smaller. The partition plates 22 and the stirring rods 10 are arranged alternately. An auxiliary mixing mechanism 13 for mixing small-dose additives is provided on the discharge pipe 5. A large gear ring 14 is fixed on the outside of the rotating cylinder 2, and a driving motor 15 is arranged on the base 1. A speed reducer is connected to the output shaft of the driving motor 15, and a driving gear meshing with the large gear ring 14 is connected to the speed reducer;During use, the driving motor 15 provides power to drive the rotating cylinder 2 to rotate. The raw material iron oxide to be pulverized is input through the feed pipe 4, and strontium oxide is input into the rotating cylinder 2 through the feeding mechanism 12. The iron oxide and strontium oxide are input into the inside of the rotating cylinder 2 in a certain proportion. The discharge pipe 5 is externally connected to a cyclone dust collector for pneumatic suction discharge. During operation, the steel balls collide with the materials for pulverization. The pulverized materials gradually pass through several partition plates 22 and are finally mixed with additives in the auxiliary mixing mechanism 13 and discharged from the discharge pipe 5. Moreover, the conveyor belt 8 is located obliquely above the inside of the rotating cylinder 2, and the steel balls will not collide with the conveyor belt 8 during movement. Strontium oxide enters the conveyor belt 8 through the feeding mechanism 12 and then moves forward along the conveyor belt 8. When passing by the dial rod 10, a part of it will be dialed down by the dial rod 10 and enter between the two partition plates 22 corresponding to the dial rod 10 for pulverization. The angle of the dial rod 10 can be adjusted through the adjustment mechanism 11, so that strontium oxide is distributed at different positions in the rotating cylinder 2 in different proportions. When a large amount of strontium oxide is located at one end of the rotating cylinder 2 close to the feed pipe 4, the speed of the steel balls smashing and grinding the relatively soft strontium oxide will be faster. This will result in the accumulation of iron oxide in the rotating cylinder 2, making the proportion of strontium oxide in the mixed materials output by the discharge pipe 5 too large. When a large amount of strontium oxide is located at one end of the rotating cylinder 2 close to the feed pipe 4, at this time, the iron oxide has been fully ground before, with a small volume. Although its grinding speed is slow, its speed of reaching the specified particle size is faster. Therefore, the influence of strontium oxide on the grinding speed of iron oxide is small at this time. And strontium oxide has not been fully ground before, with a large volume. Even if its grinding speed is fast, the time it takes to reach the specified particle size will be long. At this time, the powder output speed of strontium oxide is small, resulting in a small proportion of strontium oxide in the mixed materials output by the discharge pipe 5. Moreover, the accumulation of a large amount of strontium oxide in the rotating cylinder 2 will cause the rotating cylinder 2 to be overloaded and damaged or jammed. Therefore, through the adjustment mechanism 11, strontium oxide is placed into the rotating cylinder 2 in a certain proportion, so that the powder output speed of strontium oxide can be balanced with the powder output speed of iron oxide, making the proportion of the two raw materials in the continuously output mixed materials more reasonable, without the need for subsequent stirring, saving time and cost.

[0045] A number of reinforcing rings 16 are fixed to the outer side of the rotating cylinder 2, and the reinforcing rings 16 are evenly distributed. Two symmetrically distributed support seats 17 are arranged on both sides of the base 1, and a support roller 18 is rotatably arranged on the support seat 17. The support roller 18 abuts against the reinforcing ring 16. Steel pipes 19 are connected between the partition plates 22 and between the partition plates 22 and the end covers 3. A number of reinforcing ribs 20 are fixed inside the rotating cylinder 2, and a gap 21 is arranged between the reinforcing ribs 20. The edges of the partition plates 22 are located in the gaps 21 at the corresponding positions. The reinforcing rings 16 and the reinforcing ribs 20 can improve the strength of the rotating cylinder 2 and prevent the rotating cylinder 2 from deforming. The support roller 18 can improve the load-bearing capacity of the rotating cylinder 2, increase the processing amount of the rotating cylinder 2, and also prevent the rotating cylinder 2 from deforming. The edges of the partition plates 22 are resisted by the reinforcing ribs 20 on both sides, which can prevent the partition plates 22 from deforming when the steel balls hit the partition plates 22 during the movement of the steel balls, improve the service life of the partition plates 22, and reduce the maintenance rate of the equipment.

[0046] The power mechanism 9 includes a fixed cover 901, a power shaft 902 and a transport motor 903. The fixed cover 901 is fixed to the side end of the conveyor belt 8. The power shaft 902 is rotatably arranged in the fixed cover 901. The transport motor 903 is fixed on the end cover 3 and is used to drive the power shaft 902 to rotate. The power shaft 902 is connected to the driving roller of the conveyor belt 8 through a bevel gear pair 904. The transport motor 903 is located outside the rotating cylinder 2, which can prevent the dust inside the rotating cylinder 2 from affecting the use of the transport motor 903, improve the service life of the transport motor 903, and is also convenient for overhauling and maintaining the transport motor 903.

[0047] The adjusting mechanism 11 includes a dust cover 1101, an adjusting shaft 1102, and an electric push rod 1108. The dust cover 1101 is fixed on the other side of the conveyor belt 8. The adjusting shaft 1102 is rotatably arranged inside the dust cover 1101. A number of first gears 1107 are fixed on the adjusting shaft 1102. One end of the adjusting shaft 1102 penetrates through one of the end covers 3. The electric push rod 1108 is fixed on this end cover 3, and the electric push rod 1108 is parallel to the adjusting shaft 1102. A connecting plate 1109 is fixed on the output shaft of the electric push rod 1108, and the connecting plate 1109 is rotatably connected to the end of the adjusting shaft 1102. An adjusting motor 1103 is fixed on the other end cover 3, and a first rotating plate 1104 is fixed on the output shaft of the adjusting motor 1103. A number of sliding rods 1105 evenly distributed in the circumferential direction are fixed on the first rotating plate 1104. A second rotating plate 1106 is fixed at one end of the adjusting shaft 1102 close to the first rotating plate 1104. A number of sliding holes evenly distributed in the circumferential direction are formed on the second rotating plate 1106, and the sliding rods 1105 penetrate through the corresponding sliding holes. A rotating shaft 1110 is fixed on the lever 10. A number of rotating holes 1116 are formed on the dust cover 1101. The rotating shaft 1110 is rotatably arranged in the corresponding rotating holes 1116, and a second gear 1118 matching the first gear 1107 is fixed at one end of the rotating shaft 1110 located inside the dust cover 1101. One of the second gears 1118 meshes with the first gear 1107, and the remaining second gears 1118 are offset from their corresponding first gears 1107, and a stabilizing component is provided on the rotating shaft 1110; the extension and contraction of the electric push rod 1108 can control the lateral movement of the adjusting shaft 1102, driving different first gears 1107 to mesh with their corresponding second gears 1118. Then, the adjusting motor 1103 rotates, driving the first rotating plate 1104. The first rotating plate 1104 drives the adjusting shaft 1102 to rotate through the second rotating plate 1106 and a number of sliding rods 1105, and then drives the corresponding lever 10 to rotate through the first gear 1107 and the second gear 1118 to adjust the angle of the lever 10.

[0048] The stabilizing component includes a spring 1112, a moving ring 1111, and a limiting block 1113. The moving ring 1111 is slidably sleeved on the rotating shaft 1110, the spring 1112 is sleeved on the rotating shaft 1110, a shoulder is fixed at the upper end of the rotating shaft 1110, and both ends of the spring 1112 abut against the shoulder and the upper surface of the moving ring 1111 respectively. The limiting block 1113 is fixed at the side end of the moving ring 1111. A straight groove 1114 is formed at the side end of the lever 10 close to the rotating shaft 1110. The limiting block 1113 is located inside the straight groove 1114, and chamfers are provided at the upper and lower ends of the straight groove 1114. A plurality of circumferentially evenly distributed convex teeth 1115 are fixed on the lower surface of the moving ring 1111, and a plurality of toothed rings 1117 are fixed on the upper surface of the dust cover 1101, and the toothed rings 1117 are located directly below the moving ring 1111 at corresponding positions. The upper surface of the toothed ring 1117 meshes with the plurality of convex teeth 1115; the moving ring 1111 is sleeved on the rotating shaft 1110, and the limiting block 1113 is located inside the straight groove 1114, so that the moving ring 1111 cannot rotate around the axis of the rotating shaft 1110. Under the thrust of the spring 1112, the moving ring 1111 abuts against the toothed ring 1117. Under the action of the convex teeth 1115, there is a large rotational resistance between the toothed ring 1117 and the moving ring 1111, which can ensure that the moving ring 1111 and the lever 10 are more stable and will not be pushed by the moving materials on the conveyor belt 8, resulting in the angle deviation of the lever 10 and ultimately causing strontium oxide not to be conveyed to different positions of the rotating cylinder 2 according to the set ratio.

[0049] The feeding mechanism 12 includes a feeding hopper 1201, a feeding motor 1204, and a rotating rod 1202. The feeding hopper 1201 is fixed on the end cover 3, and the inner side of the feeding hopper 1201 is communicated with the feeding port 7. The rotating rod 1202 is rotatably arranged in the feeding hopper 1201. The feeding motor 1204 is fixed at the side end of the feeding hopper 1201. A plurality of support rods 1203 are fixed on the outer side of the rotating rod 1202. An insertion hole 1205 is formed at one end of the rotating rod 1202 close to the feeding motor 1204. The output shaft of the feeding motor 1204 is slidably inserted into the insertion hole 1205. A fixing ring 1206 is fixed on the side of the feeding hopper 1201 away from the feeding motor 1204. One end of the rotating rod 1202 away from the feeding motor 1204 is located inside the fixing ring 1206, and a fixing block 1207 is fixed on the inner side of the fixing ring 1206. A bending groove 1208 is formed on the rotating rod 1202, and the bending groove 1208 is connected end to end. The fixing block 1207 is located in the bending groove 1208; the rotating rod 1202 rotates driven by the feeding motor 1204, driving a plurality of support rods 1203 to stir the materials in the feeding hopper 1201 upward, preventing the materials from jamming, and spreading the materials flat on the conveyor belt 8. Moreover, during the rotation of the rotating rod 1202, due to the interaction between the fixing block 1207 and the bending groove 1208, the rotating rod 1202 reciprocates in the horizontal direction, making the effect of the support rods 1203 better and further preventing the materials from jamming.

[0050] The auxiliary mixing mechanism 13 includes a necking hopper 1301 fixed inside the discharge pipe 5, and a cyclone guide plate 1302 is arranged inside the necking hopper 1301. A number of cylinders 1308 are fixed inside the end cover 3, and the number of cylinders 1308 are circumferentially distributed around the outer circle of the discharge pipe 5. An anti-collision plate 1307 is fixed at the end of the cylinder 1308. A number of through slots are formed in the anti-collision plate 1307. A round hole is formed in the end cover 3 close to the discharge pipe 5, and the round hole communicates with the inside of the steel pipe 19. A special-shaped pipe 1303 is fixed on the steel pipe 19, and the diameter of one end of the special-shaped pipe 1303 located inside the steel pipe 19 is larger, and this end extends outward from the round hole. A number of adding pipes 1305 are detachably connected, and a one-way valve 1306 is connected to the adding pipe 1305. The other end of the special-shaped pipe 1303 extends to the axis position of the discharge pipe 5, and this end is connected with a diffusion plate 1304; A variety of additives to be added are transported into the special-shaped pipe 1303 from the adding pipe 1305 by a pneumatic conveying device, and enter the opening of the discharge pipe 5 from the diffusion plate 1304, and then are discharged through the discharge pipe 5 together with the crushed materials in the rotating cylinder 2. And when the mixed materials move in the discharge pipe 5, the additives diffuse, and other powders are squeezed towards the middle and rotate under the action of the cyclone guide plate 1302, which can make the additives and other powders fully mixed, improve the mixing degree between the powders, and moreover, the one-way valve 1306 is located outside the rotating cylinder 2, which is convenient for disassembly and cleaning.

[0051] The above fixing methods are the most commonly used fixed connection methods in the field, such as welding, bolt connection, etc.; The above electrical components, such as the drive motor 15, the transport motor 903, the electric push rod 1108, the adjustment motor 1103, and the feeding motor 1204, etc., are all products of the prior art and can be directly purchased and used in the market, and the specific principles will not be elaborated.

[0052] The working principle of the present invention:

[0053] The driving motor 15 provides power to drive the rotating cylinder 2 to rotate. The raw material iron oxide to be crushed is input through the feed pipe 4, and strontium oxide is input into the rotating cylinder 2 through the feeding mechanism 12. The iron oxide and strontium oxide are input into the interior of the rotating cylinder 2 in a certain proportion. The discharge pipe 5 is externally connected to a cyclone dust collector for pneumatic suction discharge. During operation, the steel balls collide with the materials for crushing. The crushed materials gradually pass through several partition plates 22. A variety of additives to be added are transported by a pneumatic conveying device from the addition pipe 1305 to the special-shaped pipe 1303 and enter the opening of the discharge pipe 5 from the diffusion plate 1304, and then are discharged through the discharge pipe 5 together with the crushed materials in the rotating cylinder 2. And when the mixed materials move in the discharge pipe 5, under the action of the cyclone guide plate 1302, they are mixed with each other to improve the mixing degree between the powder materials. Moreover, the conveyor belt 8 is located obliquely above the interior of the rotating cylinder 2, and the steel balls will not collide with the conveyor belt 8 during movement. Strontium oxide enters the conveyor belt 8 through the feed hopper 1201. And the rotating rod 1202 rotates driven by the feed motor 1204, driving a plurality of support rods 1203 to stir the materials in the feed hopper 1201 upward to prevent the materials from jamming. And during the rotation of the rotating rod 1202, due to the interaction between the fixed block 1207 and the bending groove 1208, the rotating rod 1202 moves reciprocally in the horizontal direction, making the effect of the support rods 1203 better and further preventing the materials from jamming. Then it moves forward along with the conveyor belt 8. When passing through the dial rod 10, a part of it will be dialed down by the dial rod 10 and enter between the two partition plates 22 corresponding to the dial rod 10 for crushing. Moreover, the moving ring 1111 is sleeved on the rotating shaft 1110, and the limiting block 1113 is located inside the straight groove 1114, so that the moving ring 1111 cannot rotate around the rotating shaft 1110. Under the thrust of the spring 1112, the moving ring 1111 abuts against the toothed ring 1117. Under the action of the convex teeth 1115, there is a large rotational resistance between the toothed ring 1117 and the moving ring 1111, which can ensure that the moving ring 1111 and the dial rod 10 are more stable and will not be pushed by the materials moving on the conveyor belt 8, resulting in the angle deviation of the dial rod 10. By the extension and contraction of the electric push rod 1108, the lateral movement of the adjustment shaft 1102 can be controlled to drive different first gears 1107 to mesh with their corresponding second gears 1118. Then, the adjustment motor 1103 rotates, driving the first rotating plate 1104. The first rotating plate 1104 drives the adjustment shaft 1102 to rotate through the second rotating plate 1106 and several sliding rods 1105, and then drives the corresponding dial rod 10 to rotate through the first gear 1107 and the second gear 1118 to adjust the angle of the dial rod 10, so that strontium oxide is distributed at different positions in the rotating cylinder 2 in different proportions. When a large amount of strontium oxide is located at one end of the rotating cylinder 2 close to the feed pipe 4, the speed at which the steel balls crush and grind the softer strontium oxide will be faster. This will cause the iron oxide to accumulate inside the rotating cylinder 2, resulting in an excessive proportion of strontium oxide in the mixed materials output from the discharge pipe 5.When a large amount of strontium oxide is located at one end of the rotating cylinder 2 close to the feed pipe 4, at this time, ferric oxide has been sufficiently ground before, with a small volume. Although its grinding speed is slow, its speed to reach the specified particle size is faster. Therefore, at this time, the grinding speed of strontium oxide on ferric oxide is less affected. However, strontium oxide has not been sufficiently ground before and has a large volume. Even if its grinding speed is fast, the time it takes to reach the specified particle size will be longer. At this time, the powder output speed of strontium oxide is small, resulting in a small proportion of strontium oxide in the mixed material output by the discharge pipe 5. Moreover, the accumulation of a large amount of strontium oxide in the rotating cylinder 2 will cause the rotating cylinder 2 to be overloaded and damaged or jammed. Therefore, through the adjustment mechanism 11, strontium oxide is placed into the rotating cylinder 2 in a certain proportion, which can balance the powder output speed of strontium oxide and that of ferric oxide, making the proportion of the two raw materials in the continuously output mixed material more reasonable, without the need for subsequent stirring, saving time and cost.

[0054] The above has described in detail the preferred embodiments of this patent. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can also be made without departing from the gist of this patent.

Claims

1. A strong mixing and ball milling device for permanent magnet ferrite pre-sintered material, comprising a base (1), a rotating cylinder (2) with steel balls inside, a conveyor belt (8), a power mechanism (9), a number of stirring rods (10) and an adjusting mechanism (11). Characterized in that End caps (3) are rotatably arranged at both ends of the rotating cylinder (2), and the end caps (3) are connected to the rotating cylinder (2) through bearings. A feed pipe (4) and a discharge pipe (5) are respectively connected to the two end caps (3). Two support frames (6) are fixed on the base (1), and the two support frames (6) are respectively fixedly connected to the feed pipe (4) and the discharge pipe (5). The conveyor belt (8) is installed inside the rotating cylinder (2). The power mechanism (9) is located on one side of the conveyor belt (8) and is used to drive the conveyor belt (8) to run. The adjusting mechanism (11) is located on the other side of the conveyor belt (8). The stirring rod (10) is connected to the adjusting mechanism (11), and the stirring rod (10) is located above the conveyor belt (8). A feed port (7) is opened on the end cap (3) close to the feed pipe (4), and a feeding mechanism (12) is provided at the feed port (7). A number of partition plates (22) are fixed on the frame of the conveyor belt (8). Through holes are opened on the partition plates (22), and the aperture of the through holes on the partition plates (22) closer to the discharge pipe (5) is smaller. The partition plates (22) and the stirring rods (10) are distributed alternately. An auxiliary mixing mechanism (13) for mixing small-dose additives is provided on the discharge pipe (5). A large gear ring (14) is fixed on the outside of the rotating cylinder (2), and a driving motor (15) is arranged on the base (1). A speed reducer is connected to the output shaft of the driving motor (15), and a driving gear meshing with the large gear ring (14) is connected to the speed reducer.

2. The strong mixing and ball milling device for permanent magnet ferrite pre-sintered material according to claim 1, Characterized in that A number of reinforcing rings (16) are fixed on the outside of the rotating cylinder (2), and the reinforcing rings (16) are equally spaced. Two symmetrically distributed support seats (17) are arranged on both sides of the base (1), and support rollers (18) are rotatably arranged on the support seats (17). The support rollers (18) are abutted against the reinforcing rings (16). Steel pipes (19) are connected between the partition plates (22) and between the partition plates (22) and the end caps (3). A number of reinforcing ribs (20) are fixed inside the rotating cylinder (2), and a gap (21) is arranged between the reinforcing ribs (20). The edge of the partition plate (22) is located in the corresponding gap (21).

3. The strong mixing and ball milling device for permanent magnet ferrite pre-sintered material according to claim 1 or 2, Characterized in that The power mechanism (9) includes a fixed cover (901), a power shaft (902) and a transport motor (903). The fixed cover (901) is fixed at the side end of the conveyor belt (8). The power shaft (902) is rotatably arranged in the fixed cover (901). The transport motor (903) is fixed on the end cap (3) and is used to drive the power shaft (902) to rotate. The power shaft (902) and the driving roller of the conveyor belt (8) are connected through a bevel gear pair (904).

4. A strong mixing and ball milling device for permanent magnet ferrite pre-sintered materials according to claim 1 or 2, characterized in that, the adjusting mechanism (11) includes a dust-proof cover (1101), an adjusting shaft (1102) and an electric push rod (1108). The dust-proof cover (1101) is fixed on the other side of the conveyor belt (8). The adjusting shaft (1102) is rotatably arranged inside the dust-proof cover (1101). A number of first gears (1107) are fixed on the adjusting shaft (1102). One end of the adjusting shaft (1102) penetrates through one of the end covers (3). The electric push rod (1108) is fixed on this end cover (3), and the electric push rod (1108) is parallel to the adjusting shaft (1102). A connecting plate (1109) is fixed on the output shaft of the electric push rod (1108), and the connecting plate (1109) is rotatably connected to the end of the adjusting shaft (1102). An adjusting motor (1103) is fixed on the other end cover (3), and a first rotating plate (1104) is fixed on the output shaft of the adjusting motor (1103). A number of sliding rods (1105) evenly distributed in a circle are fixed on the first rotating plate (1104). A second rotating plate (1106) is fixed at one end of the adjusting shaft (1102) close to the first rotating plate (1104). A number of sliding holes evenly distributed in a circle are formed in the second rotating plate (1106), and the sliding rods (1105) penetrate through the corresponding sliding holes. A rotating shaft (1110) is fixed on the dial rod (10). A number of rotating holes (1116) are formed in the dust-proof cover (1101). The rotating shaft (1110) is rotatably arranged in the corresponding rotating holes (1116), and a second gear (1118) matching the first gear (1107) is fixed at one end of the rotating shaft (1110) located inside the dust-proof cover (1101). One of the second gears (1118) meshes with the first gear (1107), and the rest of the second gears (1118) are offset from their corresponding first gears (1107), and a stabilizing component is provided on the rotating shaft (1110).

5. A strong mixing and ball milling device for permanent magnet ferrite pre-sintered materials according to claim 4, characterized in that, The stable component includes a spring (1112), a moving ring (1111) and a limiting block (1113). The moving ring (1111) is slidably sleeved on the rotating shaft (1110). The spring (1112) is sleeved on the rotating shaft (1110). A shoulder is fixed at the upper end of the rotating shaft (1110). The two ends of the spring (1112) are respectively abutted against the shoulder and the upper surface of the moving ring (1111). The limiting block (1113) is fixed at the side end of the moving ring (1111). A straight groove (1114) is formed at the side end of the lever (10) close to the rotating shaft (1110). The limiting block (1113) is located inside the straight groove (1114), and chamfers are arranged at the upper and lower ends of the straight groove (1114). A plurality of circumferentially evenly distributed convex teeth (1115) are fixed on the lower surface of the moving ring (1111). A plurality of toothed rings (1117) are fixed on the upper surface of the dust cover (1101), and the toothed rings (1117) are located directly below the moving ring (1111) at corresponding positions. The upper surface of the toothed ring (1117) is engaged with the plurality of convex teeth (1115).

6. The strong mixing and ball milling device for permanent magnet ferrite pre-sintered material according to claim 1 or 2, characterized in that, the feeding mechanism (12) includes a feeding hopper (1201), a feeding motor (1204) and a rotating rod (1202). The feeding hopper (1201) is fixed on the end cover (3), and the inner side of the feeding hopper (1201) is communicated with the feeding port (7). The rotating rod (1202) is rotatably arranged in the feeding hopper (1201). The feeding motor (1204) is fixed at the side end of the feeding hopper (1201). A plurality of support rods (1203) are fixed on the outer side of the rotating rod (1202). A jack (1205) is formed at one end of the rotating rod (1202) close to the feeding motor (1204). The output shaft of the feeding motor (1204) is slidably inserted into the jack (1205). A fixing ring (1206) is fixed on one side of the feeding hopper (1201) away from the feeding motor (1204). One end of the rotating rod (1202) away from the feeding motor (1204) is located inside the fixing ring (1206), and a fixing block (1207) is fixed on the inner side of the fixing ring (1206). A bending groove (1208) is formed on the rotating rod (1202), and the bending groove (1208) is connected end to end. The fixing block (1207) is located inside the bending groove (1208).

7. The strong mixing and ball milling device for permanent magnet ferrite pre-sintered material according to claim 2, characterized in that, The auxiliary mixing mechanism (13) includes a converging hopper (1301) fixed inside the discharge pipe (5), and a cyclone guide plate (1302) is arranged inside the converging hopper (1301). A number of cylinders (1308) are fixed inside the end cover (3), and the number of cylinders (1308) is circumferentially distributed around the outer circle of the discharge pipe (5). An anti-collision plate (1307) is fixed at the end of the cylinder (1308). A number of through slots are formed in the anti-collision plate (1307). A round hole is formed in the end cover (3) close to the discharge pipe (5), and the round hole is communicated with the inside of the steel pipe (19). A special-shaped pipe (1303) is fixed on the steel pipe (19). The diameter of one end of the special-shaped pipe (1303) located inside the steel pipe (19) is larger than that of the other end, and this end extends outwards from the round hole. A number of adding pipes (1305) are connected to the larger-diameter end of the special-shaped pipe (1303), and a one-way valve (1306) is connected to the adding pipe (1305). The other end of the special-shaped pipe (1303) extends to the axis position of the discharge pipe (5), and a diffusion plate (1304) is connected to this end.

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