阅读说明：本技术 一种钕铁硼磁粉块自动粉碎装置及其粉碎方法 (Automatic crushing device and crushing method for neodymium iron boron magnetic powder blocks ) 是由 唐睿 何进 陈益民 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种钕铁硼磁粉块自动粉碎装置及其粉碎方法,该装置包括振动分散机构、绞碎机构、鼓风回收机构、筛分收集机构、粉碎机构、检测机构以及控制器。本发明通过振动分散机构对钕铁硼磁粉块进行振动筛分,通过绞碎机构对振动筛分后的钕铁硼磁粉块绞碎,鼓风回收机构将磁粉吹至回收壳体中回收,而小粉团和部分磁粉则会下落至筛网二上进行筛分,小粉团会从筛网二滚落至粉碎壳体中,磁粉则直接落至收集桶中,小粉团会在辊轮组的辊压下进一步碎裂,同时一些较大的磁块也会被粉碎,磁粉会下落至传送组件上并传送至收集桶中。本发明可以提高粉碎和筛分效率,同时还能够将提高对磁性材料的利用率,提高钕铁硼磁粉块粉碎效果,实现全自动循环。(The invention discloses an automatic crushing device and a crushing method for neodymium iron boron magnetic powder blocks. The neodymium iron boron magnetic powder block is subjected to vibration screening through the vibration dispersion mechanism, the neodymium iron boron magnetic powder block subjected to vibration screening is ground through the grinding mechanism, the air blowing recovery mechanism blows the magnetic powder into the recovery shell for recovery, small powder groups and part of the magnetic powder can fall onto the second screen mesh for screening, the small powder groups can roll down from the second screen mesh into the grinding shell, the magnetic powder directly falls into the collection barrel, the small powder groups can be further broken under the rolling of the roller set, meanwhile, some larger magnetic blocks can be ground, and the magnetic powder can fall onto the conveying assembly and is conveyed into the collection barrel. The invention can improve the crushing and screening efficiency, can also improve the utilization rate of magnetic materials, improves the crushing effect of the neodymium iron boron magnetic powder blocks and realizes full-automatic circulation.)

1. The utility model provides an automatic reducing mechanism of neodymium iron boron magnetic powder piece which characterized in that, it includes:

the vibration dispersion mechanism comprises a dispersion cylinder (1), a screen I (2) and a vibration source (3); the screen I (2) is arranged in the dispersing cylinder (1) and is used for screening the neodymium iron boron magnetic powder block input from the outside; the vibration source (3) is arranged on the dispersing shell (1) and is used for vibrating the screen I (2);

the mincing mechanism comprises a mincing rod (4) and a rotating component; the twisting rod (4) is positioned below the dispersing cylinder (1) and is coaxially arranged with the dispersing cylinder (1); the rotating assembly is installed in the dispersing shell (1) and is used for driving the twisting rod (4) to rotate so as to rub the neodymium iron boron magnetic powder blocks falling from the screen I (2);

the air blowing recovery mechanism comprises an air blower (5), a screen drum (6) and a recovery shell (7); the screen cylinder (6) is arranged at the bottom end of the dispersing cylinder (1) and surrounds the twisting rod (4); the air blower (5) and the recovery shell (7) are positioned on two opposite sides of the screen drum (6), and a plurality of through holes are formed in two side walls, close to the air blower (5) and the recovery shell (7), of the screen drum (6); the blower (5) is used for blowing air to the inside of the screen drum (6) so that the magnetic powder in the screen drum (6) passes through the through holes and is collected in the recovery shell (7);

the screening and collecting mechanism comprises a collecting barrel (8) and at least one layer of second screen (9); the collecting barrel (8) is arranged at the bottom end of the screen drum (6) and is used for collecting neodymium iron boron magnetic powder blocks falling from the screen drum (6); a first perforation (10) and a second perforation (11) are formed on the side wall of the collecting barrel (8); the bottom end of the recovery shell (7) is communicated with the collecting barrel (8) through a first perforation (10); the second screen (9) is obliquely arranged in the collecting barrel (8), one end which is obliquely upward is positioned above the first through hole (10), and the other end which is obliquely downward passes through the second through hole (11);

the crushing mechanism comprises a crushing shell (12), a roller set (13), at least one layer of screen mesh III (14) and a conveying assembly; the crushing shell (12) is positioned on one side of the collecting barrel (8), at least one first outlet (15) corresponding to at least one layer of screen mesh three (14) is formed in the side wall far away from the second perforated hole (11), and a second outlet (16) is formed in the side wall close to the second perforated hole (11); one end of the second screen (9) which is inclined downwards is positioned in the crushing shell (12); the roller set (13) is arranged in the crushing shell (12) and is used for rolling the neodymium iron boron magnetic powder blocks rolled down from the second screen mesh (9); the third screen (14) is obliquely arranged on the crushing shell (12), and one end of the third screen, which is obliquely downward, is clamped in the corresponding first outlet (15); the conveying assembly is installed in the crushing shell (12) and is positioned below the third screen mesh (14) and used for conveying the magnetic powder falling from the third screen mesh (14) into the collecting barrel (8) from the second outlet (16); wherein the apertures of the screen III (14) and the screen II (9) are the same and smaller than the aperture of the screen I (2);

the detection mechanism is used for detecting the passing amount of the neodymium iron boron magnetic powder block passing through the second perforation (11) and the accumulation amount of the magnetic powder on the conveying assembly; and

the controller is used for adjusting the vibration power of the vibration source (3) according to the specific gravity of the blocky powder mass in the unit volume of the neodymium iron boron magnetic powder block and the data corresponding relation in a preset specific gravity-vibration power comparison table, and adjusting the rotating speed of the rotating assembly according to the data corresponding relation in the preset specific gravity-rotating speed comparison table; the proportion and the vibration power have a one-to-one corresponding data corresponding relation in the proportion-vibration power comparison table, and the proportion and the rotating speed have a one-to-one corresponding data corresponding relation in the proportion-rotating speed comparison table; the controller is also used for adjusting the rolling power of the roller set (13) according to the throughput and referring to a data corresponding relation of a preset throughput-rolling power comparison table, and adjusting the transmission power of the transmission assembly according to the accumulation and referring to a data corresponding relation of a preset accumulation-transmission power comparison table; the through quantity and the rolling power have a one-to-one corresponding data corresponding relation in the through quantity-rolling power comparison table, and the accumulation quantity and the transmission power have a one-to-one corresponding data corresponding relation in the accumulation quantity-transmission power comparison table.

2. The automatic neodymium iron boron magnetic powder block crushing device according to claim 1, wherein the air blowing recovery mechanism further comprises a plurality of electromagnets (17); the electromagnet (17) is arranged on the outer wall of the recovery shell (7); the controller is also used for starting the electromagnet (17) once every other preset time, so that the magnetic powder of the recovery shell (7) is adsorbed on the inner wall of the recovery shell (7) by the magnetism generated by the electromagnet (17), and the electromagnet (17) is closed when the working time of the electromagnet (17) reaches a preset time two.

3. The automatic neodymium iron boron magnetic powder block crushing device according to claim 1, wherein the detection mechanism comprises a distance measuring sensor (18) and a weighing sensor; the distance measuring sensor (18) is arranged in the second through hole (11) and is fixed on the collecting barrel (8); the distance measuring sensor (18) is used for detecting the thickness of the neodymium iron boron magnetic powder block on the second screen (9) and taking the thickness as the throughput transmitted to the controller; the weighing sensor is used for detecting the weight of magnetic powder on the conveying assembly and taking the weight as the accumulation amount transmitted to the controller.

4. The automatic pulverizing apparatus of neodymium iron boron magnetic powder block of claim 1, characterized in that the automatic pulverizing apparatus further comprises:

the conveying mechanism is used for conveying the neodymium iron boron magnetic powder blocks rolled out from the first outlet (15) to the first screen (2); and the controller drives the conveying mechanism to convey the neodymium iron boron magnetic powder blocks once every preset time.

5. The automatic neodymium iron boron magnetic powder block crushing device according to claim 4, wherein the conveying mechanism comprises a lifting barrel (19), a lifting assembly, an electromagnetic adsorption block (20), a material transferring assembly and a feeding assembly; the lifting barrel (19) is positioned at one side of the crushing shell (12) and receives the neodymium iron boron magnetic powder blocks rolled out from the first outlet (15); a discharge port (36) is formed in the side wall of the lifting barrel (19), and the height of the discharge port (36) is higher than that of the dispersion barrel (1); the lifting component is arranged on the lifting barrel (19) and is used for driving the electromagnetic adsorption block (20) to lift; the electromagnetic adsorption block (20) is positioned in the lifting barrel (19), slides up and down along a vertical chute arranged on the side wall of the lifting barrel (19), and adsorbs the neodymium iron boron magnetic powder block positioned in the lifting barrel (19) through produced magnetism; the material transferring component is arranged on the lifting barrel (19) and is used for transferring the neodymium iron boron magnetic powder blocks adsorbed by the electromagnetic adsorption blocks (20) to the feeding component through the discharge hole (36); the feeding assembly is used for conveying the received neodymium iron boron magnetic powder blocks to the first screen (2).

6. The automatic pulverizing device of neodymium iron boron magnetic powder block of claim 5, characterized in that the lifting component comprises a lifting motor (21), at least one positioning rod (22), a threaded rod (23) and a lifting platform (24); the lifting motor (21) is arranged outside the lifting barrel (19), and the rotating shaft is arranged in parallel with the rotating shaft of the twisting rod (4); the positioning rod (22) penetrates through the lifting platform (24), is fixed outside the lifting barrel (19), and is arranged in parallel with the threaded rod (23); the bottom end of the threaded rod (23) penetrates through the lifting platform (24) and is connected to an output shaft of the lifting motor (21); the electromagnetic adsorption block (20) penetrates through the sliding groove and is fixed on the lifting platform (24);

the material transferring component comprises a material transferring motor (25), a material transferring hopper (26) and a material transferring valve (27); the material transferring motor (25) is arranged on the lifting barrel (19), and an output shaft is positioned in the discharge hole (36); the material transferring hopper (26) is provided with an installation column (28) vertical to the discharging direction of the material transferring hopper, and the installation column (28) is installed on the output shaft of the material transferring motor (25); the material transferring hopper (26) is rotated to receive the neodymium iron boron magnetic powder blocks adsorbed on the electromagnetic adsorption blocks (20); the material transferring valve (27) is arranged on the material transferring hopper (26) and is used for adjusting the discharging amount of the material from the material transferring hopper (26) to the feeding assembly;

the feeding assembly comprises a sliding plate (29) with a smooth upper surface; the sliding plate (29) is obliquely arranged relative to the dispersing cylinder (1), one end of the sliding plate, which is obliquely downward, is positioned above the screen I (2), and the other end of the sliding plate, which is obliquely upward, is positioned below the material rotating hopper (26);

the controller is used for firstly starting the electromagnetic adsorption block (20), driving the lifting motor (21) to rotate, enabling the threaded rod (23) to rotate to enable the lifting platform (24) to ascend to a preset height, secondly driving the material transferring motor (25) to rotate, enabling the material transferring hopper (26) to rotate to be located below the electromagnetic adsorption block (20), then closing the electromagnetic adsorption block (20), enabling the neodymium iron boron magnetic powder blocks adsorbed on the electromagnetic adsorption block (20) to fall into the material transferring hopper (26), then driving the material transferring motor (25) to rotate, enabling the material transferring hopper (26) to rotate to be located above the sliding plate (29), and finally enabling the neodymium iron boron magnetic powder blocks located in the material transferring hopper (26) to fall onto the sliding plate (29) through the material transferring valve (27).

7. The automatic pulverizing apparatus of neodymium iron boron magnetic powder block according to claim 1, characterized in that the rotating assembly comprises a shield (30) and a rotating motor (31); the protective cover (30) is fixed in the dispersing cylinder (1); the rotating motor (31) is positioned in the protective cover (30), and the output shaft extends out of the protective cover (30);

the twisting rod (4) comprises a twisting shaft (32) and a plurality of twisting rods (33); the top end of the hinge shaft (32) is connected to an output shaft of the rotating motor (31); the plurality of twisting rods (33) are arranged on the twisting shaft (32) and are arranged in a staggered manner.

8. The automatic pulverizing apparatus of neodymium iron boron magnetic powder block according to claim 1, characterized in that the dispersing cylinder (1), the screen cylinder (6), the recovery casing (7), the collecting barrel (8) and the pulverizing casing (12) are formed integrally and made of the same non-magnetic material.

9. The automatic pulverizing apparatus of neodymium iron boron magnetic powder block according to claim 1, characterized in that the conveying assembly comprises a conveying belt (34) which is obliquely arranged; the end of the conveyor belt (34) which inclines upwards is close to the first outlet (15), and the end which inclines downwards passes through the second outlet (16) and is positioned in the collecting barrel (8).

10. An automatic crushing method of neodymium iron boron magnetic powder blocks, which is applied to the automatic crushing device of neodymium iron boron magnetic powder blocks as claimed in any one of claims 1 to 9, is characterized by comprising the following steps:

(a) vibrating and screening the neodymium iron boron magnetic powder block input from the outside;

according to the specific gravity of the blocky powder mass in the unit volume of the neodymium iron boron magnetic powder block, the vibration power of the vibration source (3) is adjusted according to a data corresponding relation in a preset specific gravity-vibration power comparison table, and meanwhile, the rotating speed of the rotating assembly is adjusted according to a data corresponding relation in a preset specific gravity-rotating speed comparison table; the proportion and the vibration power have a one-to-one corresponding data corresponding relation in the proportion-vibration power comparison table, and the proportion and the rotating speed have a one-to-one corresponding data corresponding relation in the proportion-rotating speed comparison table;

(b) mincing the neodymium iron boron magnetic powder blocks after the vibration screening, and simultaneously blowing air into the minced region to ensure that the magnetic powder in the screen cylinder (6) passes through the through holes and is collected in the recovery shell (7);

(c) further screening the neodymium iron boron magnetic powder blocks falling from the screen drum (6), and detecting the throughput of the neodymium iron boron magnetic powder blocks passing through the second perforation (11);

according to the throughput, adjusting the rolling power of the roller set (13) by referring to a data corresponding relation of a preset throughput-rolling power comparison table; the corresponding data relation between the throughput and the rolling power exists in a one-to-one correspondence in the comparison table of the throughput and the rolling power;

(d) sequentially crushing and screening the coarse magnetic powder blocks separated in the step (c), and detecting the accumulation amount of the magnetic powder on the conveying assembly;

according to the accumulation amount, the transmission power of the transmission assembly is adjusted by referring to a data corresponding relation of a preset accumulation amount-transmission power comparison table; the accumulation amount and the transmission power have a one-to-one corresponding data corresponding relation in the accumulation amount-transmission power comparison table;

(e) collecting the magnetic powder collected in the step (b), the finer magnetic powder separated in the step (c) and the finer magnetic powder screened in the step (d) in a collecting barrel (8) together;

(f) returning the coarse magnetic powder blocks sieved in the step (d) to the step (a).

Technical Field

The invention relates to an automatic crushing device in the technical field of crushing, in particular to an automatic crushing device for neodymium iron boron magnetic powder blocks, and further relates to an automatic crushing method for the neodymium iron boron magnetic powder blocks of the device.

Background

The neodymium-iron-boron magnet is a tetragonal crystal formed of neodymium, iron, and boron. This magnet is a permanent magnet that is second only to absolute zero holmium magnets in magnetism today and is also the most commonly used rare earth magnet. Neodymium iron boron magnets are widely used in electronic products such as hard disks, mobile phones, earphones, and battery powered tools. The neodymium iron boron is divided into sintered neodymium iron boron and bonded neodymium iron boron, and the bonded neodymium iron boron is magnetic in all directions and is corrosion-resistant; the sintered neodymium iron boron is easy to corrode, and the surface of the sintered neodymium iron boron needs to be plated with zinc, nickel, environment-friendly zinc, environment-friendly nickel, nickel copper nickel, environment-friendly nickel copper nickel and the like. The sintered neodymium iron boron is generally divided into axial magnetization and radial magnetization according to the required working surface.

In the production process of the neodymium-iron-boron permanent magnetic material, as the neodymium-iron-boron powder has the agglomeration characteristic, the neodymium-iron-boron powder can be agglomerated into neodymium-iron-boron magnetic powder blocks, and the screening efficiency can be greatly influenced when the neodymium-iron-boron magnetic powder is screened. Moreover, the great neodymium iron boron magnetic path of particle diameter often can exist among the neodymium iron boron magnetic powder piece, if directly sieve it, can cause a large amount of wastes, and then difficult realization is directly smashed to neodymium iron boron magnetic powder piece, owing to there being the magnetic, crushing efficiency is not high simultaneously. Therefore, the neodymium iron boron magnetic powder block needs to be screened and crushed.

Disclosure of Invention

The invention provides an automatic neodymium iron boron magnetic powder block crushing device and a crushing method thereof, and aims to solve the technical problem that the screening efficiency and the crushing efficiency of the existing neodymium iron boron magnetic powder block screening device or neodymium iron boron magnetic block crushing device are not high.

The invention is realized by adopting the following technical scheme: the utility model provides an automatic reducing mechanism of neodymium iron boron magnetic powder piece, it includes:

the vibration dispersing mechanism comprises a dispersing cylinder, a first screen and a vibration source; the first screen is arranged in the dispersing cylinder and is used for screening the neodymium iron boron magnetic powder blocks input from the outside; the vibration source is arranged on the dispersing shell and is used for vibrating the first screen;

the grinding mechanism comprises a grinding rod and a rotating assembly; the twisting rod is positioned below the dispersing cylinder and is coaxially arranged with the dispersing cylinder; the rotating assembly is arranged in the dispersing shell and is used for driving the hinge rod to rotate so as to rub the neodymium iron boron magnetic powder blocks falling from the first screen;

the air blowing recovery mechanism comprises an air blower, a screen drum and a recovery shell; the screen cylinder is arranged at the bottom end of the dispersing cylinder and surrounds the twisted rod; the air blower and the recovery shell are positioned at two opposite sides of the screen drum, and a plurality of through holes are formed in the two side walls of the screen drum, which are close to the air blower and the recovery shell; the blower is used for blowing air to the inside of the screen drum, so that the magnetic powder in the screen drum passes through the through holes and is collected in the recovery shell;

the screening and collecting mechanism comprises a collecting barrel and at least one layer of screen II; the collecting barrel is arranged at the bottom end of the screen cylinder and is used for collecting neodymium iron boron magnetic powder blocks falling from the screen cylinder; a first perforation and a second perforation are formed on the side wall of the collecting barrel; the bottom end of the recovery shell is communicated with the collecting barrel through a perforation; the screen II is obliquely arranged in the collecting barrel, one end of the screen II, which is obliquely upward, is positioned above the first through hole, and the other end of the screen II, which is obliquely downward, penetrates through the second through hole;

the crushing mechanism comprises a crushing shell, a roller set, at least one layer of screen mesh III and a conveying assembly; the crushing shell is positioned on one side of the collecting barrel, at least one first outlet corresponding to the at least one layer of screen mesh III is formed in the side wall far away from the second perforated hole, and a second outlet is formed in the side wall close to the second perforated hole; one end of the screen II, which faces downwards in an inclined mode, is positioned in the crushing shell; the roller set is arranged in the crushing shell and is used for rolling the neodymium iron boron magnetic powder blocks rolled down from the second screen mesh; the screen mesh III is obliquely arranged on the crushing shell, and one end of the screen mesh III which is obliquely downward is clamped in the corresponding outlet I; the conveying assembly is arranged in the crushing shell, is positioned below the third screen mesh and is used for conveying the magnetic powder falling from the third screen mesh into the collecting barrel from the second outlet; the apertures of the third screen and the second screen are the same and smaller than the aperture of the first screen;

the detection mechanism is used for detecting the throughput of the neodymium iron boron magnetic powder block passing through the second through hole and the accumulation amount of the magnetic powder on the conveying assembly; and

the controller is used for adjusting the vibration power of the vibration source according to the specific gravity of the blocky powder mass in the unit volume of the neodymium iron boron magnetic powder block and according to a data corresponding relation in a preset specific gravity-vibration power comparison table, and adjusting the rotating speed of the rotating assembly according to a data corresponding relation in a preset specific gravity-rotating speed comparison table; the proportion and the vibration power have a one-to-one corresponding data corresponding relation in the proportion-vibration power comparison table, and the proportion and the rotating speed have a one-to-one corresponding data corresponding relation in the proportion-rotating speed comparison table; the controller is also used for adjusting the rolling power of the roller set according to the throughput and the data corresponding relation of a preset throughput-rolling power comparison table, and adjusting the transmission power of the transmission assembly according to the accumulation and the data corresponding relation of a preset accumulation-transmission power comparison table; the through quantity and the rolling power have a one-to-one corresponding data corresponding relation in the through quantity-rolling power comparison table, and the accumulation quantity and the transmission power have a one-to-one corresponding data corresponding relation in the accumulation quantity-transmission power comparison table.

The invention carries out vibration screening on neodymium iron boron magnetic powder blocks through the vibration dispersion mechanism to realize pre-screening, rubs the neodymium iron boron magnetic powder blocks after the vibration screening through the rubbing mechanism, so that large powder lumps can be knocked away by a rubbing rod to form small powder lumps and magnetic powder, simultaneously, the air blowing recovery mechanism blows the magnetic powder to the recovery shell to recover, the small powder lumps and partial magnetic powder can fall onto the second screen mesh to carry out further screening, the small powder lumps can roll down into the crushing shell from the second screen mesh, the magnetic powder directly falls into the collection barrel, then, the small powder lumps can be further cracked under the rolling of the roller set, meanwhile, a plurality of larger magnetic blocks can be crushed, thus the formed magnetic powder can directly fall onto the conveying assembly from the third screen mesh and further conveyed into the collection barrel, and the powder lumps which fall onto the first outlet from the third screen mesh can be conveyed into the vibration dispersion mechanism again to be crushed, the technical problems that the screening efficiency and the crushing efficiency of an existing neodymium iron boron magnetic powder block screening device or an existing neodymium iron boron magnetic block crushing device are not high are solved, meanwhile, the detection mechanism can detect the number of neodymium iron boron magnetic powder blocks entering a crushing shell, and simultaneously detect the accumulation amount of generated magnetic powder, so that the controller adjusts rolling power and transmission power according to the information, adjusts the power of a vibration source, and achieves the technical effects of improving the screening efficiency and improving the energy utilization rate.

As a further improvement of the above scheme, the blast air recovery mechanism further comprises a plurality of electromagnets; the electromagnet is arranged on the outer wall of the recovery shell; the controller is also used for starting the electromagnet once every other preset time, so that the magnetic powder of the recovery shell is adsorbed on the inner wall of the recovery shell by the magnetism generated by the electromagnet, and the electromagnet is closed when the working time of the electromagnet reaches a preset time II.

As a further improvement of the above scheme, the detection mechanism comprises a distance measuring sensor and a weighing sensor; the distance measuring sensor is arranged in the second through hole and is fixed on the collecting barrel; the distance measuring sensor is used for detecting the thickness of the neodymium iron boron magnetic powder block on the second screen mesh and taking the thickness as the throughput transmitted to the controller; the weighing sensor is used for detecting the weight of magnetic powder on the conveying assembly and taking the weight as the accumulation amount transmitted to the controller.

As a further improvement of the above aspect, the automatic crushing apparatus further includes:

the conveying mechanism is used for conveying the neodymium iron boron magnetic powder blocks rolled out from the first outlet to the first screen; and the controller drives the conveying mechanism to convey the neodymium iron boron magnetic powder blocks once every preset time.

Furthermore, the conveying mechanism comprises a lifting barrel, a lifting assembly, an electromagnetic adsorption block, a material transferring assembly and a feeding assembly; the lifting barrel is positioned at one side of the crushing shell and receives the neodymium iron boron magnetic powder block rolled out from the first outlet; a discharge port is formed in the side wall of the lifting barrel, and the height of the discharge port is higher than that of the dispersing barrel; the lifting assembly is arranged on the lifting barrel and is used for driving the electromagnetic adsorption block to lift; the electromagnetic adsorption block is positioned in the lifting barrel, slides up and down along a vertical sliding groove formed in the side wall of the lifting barrel, and adsorbs the neodymium iron boron magnetic powder block positioned in the lifting barrel through produced magnetism; the material transferring assembly is arranged on the lifting barrel and is used for transferring the neodymium iron boron magnetic powder blocks adsorbed by the electromagnetic adsorption blocks to the feeding assembly through the discharge port; the feeding assembly is used for conveying the received neodymium iron boron magnetic powder blocks to the first screen.

Still further, the lifting assembly comprises a lifting motor, at least one positioning rod, a threaded rod and a lifting platform; the lifting motor is arranged outside the lifting barrel, and the rotating shaft is arranged in parallel with the rotating shaft of the twisting rod; the positioning rod penetrates through the lifting platform, is fixed outside the lifting barrel and is arranged in parallel with the threaded rod; the bottom end of the threaded rod penetrates through the lifting platform and is connected to an output shaft of the lifting motor; the electromagnetic adsorption block penetrates through the chute and is fixed on the lifting platform;

the material transferring component comprises a material transferring motor, a material transferring hopper and a material transferring valve; the material transferring motor is arranged on the lifting barrel, and the output shaft is positioned in the discharge hole; the material transferring hopper is provided with an installation column which is vertical to the discharging direction of the material transferring hopper, and the installation column is installed on an output shaft of the material transferring motor; the rotating hopper rotates to receive the neodymium iron boron magnetic powder blocks adsorbed on the electromagnetic adsorption blocks; the material transferring valve is arranged on the material transferring hopper and used for adjusting the discharging amount of the material from the material transferring hopper to the feeding assembly;

the feeding assembly comprises a sliding plate with a smooth upper surface; the sliding plate is obliquely arranged relative to the dispersing cylinder, one end of the sliding plate, which is obliquely downward, is positioned above the first screen mesh, and the other end of the sliding plate, which is obliquely upward, is positioned below the material transferring hopper;

wherein, the controller is used for at first starting the electromagnetic adsorption piece to drive elevator motor rotates, makes the threaded rod rotate and rises to one in order to make the elevating platform predetermine the height, and then the drive changes the material motor and rotates, makes the below of changeing the hopper rotation in order to be located the electromagnetic adsorption piece, then closes the electromagnetic adsorption piece, makes the last adsorbed neodymium iron boron magnetic powder piece of electromagnetic adsorption piece fall to changeing in the hopper, then the drive changes the material motor and rotates, makes the rotatory top to the slide of changeing the hopper, makes the neodymium iron boron magnetic powder piece that is located to change in the hopper fall to the slide through changeing the material valve at last.

As a further improvement of the above scheme, the rotating assembly comprises a protective cover and a rotating motor; the protective cover is fixed in the dispersing cylinder; the rotating motor is positioned in the protective cover, and the output shaft extends out of the protective cover;

the twisting rod comprises a twisting shaft and a plurality of twisting rods; the top end of the hinge shaft is connected to an output shaft of the rotating motor; the plurality of twisting rods are arranged on the twisting shaft and are arranged in a staggered manner.

As a further improvement of the scheme, the dispersing cylinder, the screen cylinder, the recovery shell, the collecting barrel and the crushing shell are all integrally formed and made of the same non-magnetic material.

As a further improvement of the above solution, the conveying assembly comprises an obliquely arranged conveyor belt; the end of the conveyor belt which inclines upwards is close to the first outlet, and the end which inclines downwards passes through the second outlet and is positioned in the collecting barrel.

The invention also provides an automatic crushing method of the neodymium iron boron magnetic powder block, which is applied to any automatic crushing device of the neodymium iron boron magnetic powder block and comprises the following steps:

(a) vibrating and screening the neodymium iron boron magnetic powder block input from the outside;

according to the specific gravity of the blocky powder mass in the unit volume of the neodymium iron boron magnetic powder block, adjusting the vibration power of a vibration source according to a data corresponding relation in a preset specific gravity-vibration power comparison table, and adjusting the rotating speed of the rotating assembly according to a data corresponding relation in a preset specific gravity-rotating speed comparison table; the proportion and the vibration power have a one-to-one corresponding data corresponding relation in the proportion-vibration power comparison table, and the proportion and the rotating speed have a one-to-one corresponding data corresponding relation in the proportion-rotating speed comparison table;

(b) mincing the neodymium iron boron magnetic powder block after the vibration screening, and simultaneously blowing air into the minced region to enable the magnetic powder in the screen cylinder to pass through the through hole and be collected in the recovery shell;

(c) further screening the neodymium iron boron magnetic powder blocks falling from the screen drum, and detecting the throughput of the neodymium iron boron magnetic powder blocks passing through the second perforation;

according to the throughput, adjusting the rolling power of the roller set by referring to a data corresponding relation of a preset throughput-rolling power comparison table; the corresponding data relation between the throughput and the rolling power exists in a one-to-one correspondence in the comparison table of the throughput and the rolling power;

(d) sequentially crushing and screening the coarse magnetic powder blocks separated in the step (c), and detecting the accumulation amount of the magnetic powder on the conveying assembly;

according to the accumulation amount, the transmission power of the transmission assembly is adjusted by referring to a data corresponding relation of a preset accumulation amount-transmission power comparison table; the accumulation amount and the transmission power have a one-to-one corresponding data corresponding relation in the accumulation amount-transmission power comparison table;

(e) collecting the magnetic powder collected in the step (b), the finer magnetic powder separated in the step (c) and the finer magnetic powder screened in the step (d) in a collecting barrel;

(f) returning the coarse magnetic powder blocks sieved in the step (d) to the step (a).

Compared with the existing neodymium iron boron magnetic powder block screening device or neodymium iron boron magnetic block crushing device, the neodymium iron boron magnetic powder block automatic crushing device and the crushing method thereof have the following beneficial effects:

1. this automatic reducing mechanism of neodymium iron boron magnetism powder piece, it carries out vibration screening to neodymium iron boron magnetism powder piece through vibration dispersion mechanism, realize pre-screening, can prevent very big impurity and powder group to get into and influence subsequent smashing on the one hand like this, on the other hand can shake very big powder group and smash, will form relatively big powder group like this, then rub the neodymium iron boron magnetism powder piece after the vibration screening through rubbing the mechanism, big powder group can be knocked off by the drift rod like this and rub with the magnetic, further become little powder group and magnetic. Meanwhile, the air blower of the air blowing recovery mechanism of the crushing device blows magnetic powder to the recovery shell for recovery, small powder lumps and partial magnetic powder can fall onto the second screen mesh for further screening, the small powder lumps can roll down to the crushing shell from the second screen mesh, the falling magnetic powder directly falls into the collecting barrel, and then the small powder lumps can further break under the rolling of the roller set, and meanwhile, some large magnetic blocks can also be crushed.

2. This automatic reducing mechanism of neodymium iron boron magnetism powder piece, its detection mechanism can detect the throughput of passing through the two neodymium iron boron magnetism powder pieces of perforation, and the controller adjusts the power of roller set according to the throughput like this, for example can suitably reduce the roll-in power when the throughput is less, and then increase the roll-in power when the throughput is great, then stop the roll-in when the throughput, can improve the energy utilization of roller set like this, can also prolong the life of roller set. This automatic reducing mechanism's detection mechanism can also detect the magnetic deposit volume that is located on the conveying subassembly, and the controller can adjust conveying efficiency according to the deposit volume like this, for example can reduce transmission power when the deposit volume is less, slows down the conveying promptly, then accelerates the conveying on the contrary, under the prerequisite of the timely conveying of guaranteeing the magnetic, improves the utilization ratio of the energy of conveying. The controller also adjusts the vibration power of the vibration source according to the specific gravity of the massive powder lumps, for example, the vibration power can be increased when the specific gravity is larger, so that the amplitude and the vibration frequency of the first screen mesh are increased, and the vibration power is reduced when the specific gravity is smaller, so that the waste of vibration energy is avoided.

3. This automatic reducing mechanism of neodymium iron boron magnetism powder piece, its blast air is retrieved the mechanism and still can be set up the electro-magnet, the electro-magnet can produce the magnetic field effect to the magnetic of retrieving in the casing, make the magnetic adsorb on the inner wall of retrieving the casing, the controller just can pass through the control electro-magnet like this, make these absorbent magnetic fall after reaching a certain amount, thereby accelerate to collect the magnetic, avoid partial magnetic to flow back to a dispersion section of thick bamboo in, and can also produce the appeal to the magnetic in the dispersion section of thick bamboo, accelerate the speed that the magnetic got into the recovery casing.

4. The automatic crushing device for the neodymium iron boron magnetic powder blocks is further provided with a conveying mechanism, a controller can start an electromagnetic adsorption block to adsorb the powder balls entering a lifting barrel firstly, drive a lifting motor to rotate, enable a threaded rod to rotate and enable a lifting platform to ascend to a preset height, drive a material rotating motor to rotate secondly, enable a material rotating hopper to rotate till the position below the electromagnetic adsorption block, then close the electromagnetic adsorption block, enable the adsorbed powder balls to fall into the material rotating hopper under the action of gravity, then drive the material rotating motor to rotate again, enable the material rotating hopper to rotate till the position above a sliding plate, finally open a material rotating valve, enable the powder balls in the material rotating hopper to fall onto the sliding plate and further slide onto a screen mesh to perform vibration screening again, thereby realizing repeated screening and crushing of the neodymium iron boron magnetic powder blocks, and the neodymium iron boron magnetic powder blocks can be crushed by multiple wheels, thereby becoming magnetic powder. The process is smashed in repeated screening like this, can improve neodymium iron boron magnetic powder piece crushing effect, improves the utilization ratio to magnetic material, can realize full automatic cycle moreover, need not manual operation, further improves crushing efficiency, alleviates artifical intensity of labour simultaneously, avoids the dust to cause the health hazard to the people.

5. The beneficial effects of the method for automatically crushing the neodymium iron boron magnetic powder block are the same as those of the device for automatically crushing the neodymium iron boron magnetic powder block, and the detailed description is omitted here.

Drawings

Fig. 1 is a schematic structural diagram of an automatic neodymium iron boron magnetic powder block crushing device in embodiment 1 of the invention;

fig. 2 is a schematic structural diagram of an automatic neodymium iron boron magnetic powder block crushing device in embodiment 2 of the invention;

fig. 3 is a schematic structural diagram of an automatic neodymium iron boron magnetic powder block crushing device in embodiment 3 of the invention when an electromagnetic adsorption block is not lifted;

FIG. 4 is an enlarged view of area A of FIG. 3;

FIG. 5 is an enlarged view of area B of FIG. 3;

fig. 6 is a schematic structural diagram of the automatic neodymium iron boron magnetic powder block crushing device according to embodiment 3 of the present invention when the electromagnetic adsorption block rises to a preset height;

FIG. 7 is an enlarged view of area C of FIG. 6;

fig. 8 is a flowchart of an automatic pulverizing method of neodymium iron boron magnetic powder blocks according to embodiment 4 of the present invention.

Description of the symbols:

1 dispersing cylinder 21 lifting motor

2 screen 22 locating rod

3 vibration source 23 threaded rod

4 24 elevating platforms of hank stick

5 air-blower 25 changes material motor

6 screen drum 26 rotating hopper

7 retrieve casing 27 commentaries on classics material valve

8 collecting barrel 28 mounting column

9 screen II 29 sliding plate

10-hole one 30-shield

11 two 31 rotating motor of perforation

12 crushing shell 32 hinge

13 roller set 33 hinge rod

14 mesh three 34 conveyor belt

15 outlet-35 damping ring

16 outlet two 36 discharge outlet

17 electromagnet 37 positioning plate

18 ranging sensor 38 baffle

19 lifting bucket 39 base

20 electromagnetic adsorption block 40 cover

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.