CN112024087A - A air current grinds device for neodymium iron boron production - Google Patents

A air current grinds device for neodymium iron boron production Download PDF

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Publication number
CN112024087A
CN112024087A CN202010780556.2A CN202010780556A CN112024087A CN 112024087 A CN112024087 A CN 112024087A CN 202010780556 A CN202010780556 A CN 202010780556A CN 112024087 A CN112024087 A CN 112024087A
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China
Prior art keywords
fixedly connected
grinding
filter
valve
iron boron
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CN202010780556.2A
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Chinese (zh)
Inventor
刘静
刘东平
刘颖
达顺奎
景永红
张霞
伊晶晶
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Baotou Yongzhen Jingping Magnetic Materials Technology Co ltd
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Baotou Yongzhen Jingping Magnetic Materials Technology Co ltd
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Priority to CN202010780556.2A priority Critical patent/CN112024087A/en
Publication of CN112024087A publication Critical patent/CN112024087A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/06—Jet mills
    • B02C19/068—Jet mills of the fluidised-bed type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/02—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/30—Passing gas through crushing or disintegrating zone the applied gas acting to effect material separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
    • B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
    • B02C23/24—Passing gas through crushing or disintegrating zone
    • B02C23/32—Passing gas through crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Abstract

The invention discloses an airflow mill device for neodymium iron boron production, which comprises a device main body, a hopper and a double-screw feeder. The top embedding of device main part is connected with the hopper, inside one side swing joint of device main part has double helix feeder, inside one side swing joint of double helix feeder has pneumatic strike hammer, double helix feeder's one end fixedly connected with converter, double helix feeder's opposite side overlap joint links to each other has the check weighing automatic feed valve, the bottom fixedly connected with integrated electric control cabinet of device main part, the fine wholeness that embodies the device of integrated electric control cabinet, the fine convenience of accomodating of embodying the device of groove is accomodate to the part, the fine grinding high efficiency that embodies the device of high-efficient grinding mechanism, the fine cyclicity that embodies the device of filtration circulation mechanism, grind the fine stability and the controllability that embodies the device of steady voltage cooling body, be applicable to neodymium iron boron production technical field's use, future extensive development prospect has.

Description

A air current grinds device for neodymium iron boron production
Technical Field
The invention belongs to the technical field of neodymium iron boron production, and particularly relates to an airflow mill device for neodymium iron boron production.
Background
The jet mill is mainly used for milling neodymium iron boron powder and other processes needing milling, and the prepared powder has good particle size distribution, and is one of important devices essential to the magnetic material industry.
The existing grinding device has the advantages that grinding particles are large, the design of secondary grinding is not realized, the grinding effect is poor, gas can be discharged after grinding, the gas can be wasted due to direct discharge, the existing device does not have a good recycling design, the granularity of ground powder can be stabilized due to the stable grinding pressure in the grinding machine, the existing device cannot control the air pressure stably, and the granularity of the powder is not stable enough.
Disclosure of Invention
The invention aims to: in order to solve the problems that the grinding effect is poor, the circular recovery design is not good, and the granularity of powder is not stable enough, which are provided in the background technology, an airflow grinding device for producing neodymium iron boron is provided.
The technical scheme adopted by the invention is as follows: an airflow mill device for neodymium iron boron production comprises a device main body, a hopper and a double-screw feeder, wherein the hopper is embedded and connected to the top of the device main body, and the double-screw feeder is movably connected to one side inside the device main body;
the device comprises a device body, a grinding layer, a separation layer, a separator and a charging barrel, wherein the bottom of one side of the device body is connected with a lapping layer in a lap joint manner, the bottom inside the grinding layer is fixedly connected with a nozzle, the top of the grinding layer is fixedly connected with the separation layer, one side inside the separation layer is movably connected with a separation wheel, one side of the bottom of the separation layer is fixedly connected with a secondary grinding port, one side of the separation layer is connected with the separator in a lap joint manner, and one side of the bottom of the separator is fixedly connected with;
the middle part of the bottom of the separator is fixedly connected with a filter, one side of the top inside the filter is fixedly connected with a pulse cleaning device, one side of the pulse cleaning device is connected with a micropore in a lap joint manner, one side of the bottom inside the filter is fixedly connected with an automatic oxygen exhaust valve, and the other side of the bottom inside the filter is fixedly connected with a mechanical oxygen exhaust valve;
the overlap joint of bottom one side of filter links to each other has the compressor, one side top overlap joint of compressor links to each other has the cold machine of doing, the inside one side fixedly connected with cooling water access & exit of cold machine of doing, the pneumatic film trip valve of top fixedly connected with of cold machine of doing, one side overlap joint of pneumatic film trip valve links to each other has little regulating valve, one side overlap joint of little regulating valve links to each other has big regulating valve, the bottom fixedly connected with low pressure jar of big regulating valve.
Preferably, one side of the interior of the double-screw feeder is movably connected with a pneumatic knocking hammer.
Preferably, one end of the double-screw feeder is fixedly connected with a frequency converter.
Preferably, the other side of the double-screw feeder is connected with a weight measuring automatic feeding valve in an overlapping manner.
Preferably, the integrated electric control cabinet is fixedly connected to the bottom end of the device main body.
Preferably, a part accommodating groove is fixedly connected to one side of the bottom of the device body.
Preferably, the grinding layer at the bottom of one side of the device body, the nozzle at the bottom of the inside of the grinding layer, the sorting layer at the top of the grinding layer, the sorting wheel at one side of the inside of the sorting layer, the secondary grinding port at one side of the bottom of the sorting layer, the separator at one side of the sorting layer and the charging barrel at one side of the bottom of the separator jointly form the high-efficiency grinding mechanism.
Preferably, the filter at the middle part of the bottom of the separator, the pulse cleaning device at one side of the top inside the filter, the micropores at one side of the pulse cleaning device, the automatic oxygen exhaust valve at one side of the bottom inside the filter and the mechanical oxygen exhaust valve at the other side of the bottom inside the filter jointly form a filtering circulation mechanism.
Preferably, the grinding, pressure stabilizing and cooling mechanism is composed of a compressor on one side of the bottom of the filter, a cold dryer on the top of one side of the compressor, a cooling water inlet and outlet on one side of the inside of the cold dryer, a pneumatic film cut-off valve on the top of the cold dryer, a small regulating valve on one side of the pneumatic film cut-off valve, a large regulating valve on one side of the small regulating valve and a low-pressure tank at the bottom of the large regulating valve.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, by arranging the high-efficiency grinding mechanism, materials enter a grinding layer through a feeding mechanism, high-pressure nitrogen provided by a compressor enters a grinding machine through a pressure adjusting mechanism and a cold dryer, the gas is accelerated by a nozzle, the high-pressure nitrogen is sprayed into the grinding machine at an ultrasonic speed, the materials are accelerated along with the gas to form a fluidized bed, the materials collide and become thin in the fluidized bed, the bottom of the fluidized bed is sprayed, crushed powder is blown to a separation layer, a motor drives a separation wheel to separate fine powder, the fine powder is discharged from a discharge barrel and enters a separator, coarse powder slides back to a secondary grinding port through a wall to be continuously ground until being separated, a mixture of air flow and the powder rotates in the separator to generate centrifugal force, the powder is thrown out and is loaded into a charging barrel through a discharge valve, therefore, the grinding of the materials is efficiently and automatically completed, and the grinding efficiency of the device is well embodied;
2. in the invention, through arranging the filtering circulation mechanism, the separated gas enters the filter through a pipeline, the pulse cleaning device in the filter generates pulse airflow, fine powder is discharged from micropores through back flushing, the airflow is kept smooth, the rear end of the filter is connected with the mechanical oxygen discharge valve and the automatic oxygen discharge valve, when the oxygen content is high, the system automatically discharges and supplements nitrogen, and the treated gas can directly enter the compressor for recycling, thereby well embodying the cyclicity of the device;
3. according to the invention, by arranging the grinding pressure-stabilizing cooling mechanism, the temperature of gas compressed by the compressor is very high and needs to be reduced, by arranging the refrigeration dryer, cooling water is injected into a cooling water inlet and outlet during cooling, the gas can be well cooled and dried through the refrigeration dryer, then a small regulating valve and a large regulating valve are arranged on a bypass pipeline, the large regulating valve is controlled by a low-pressure tank, when the compressor is just started, the pressure is low, at the moment, the large regulating valve is fully opened to carry out small circulation, in addition, the full opening of a gas supplementing valve door can supplement gas to the system to the maximum extent, the small regulating valve is used for regulating the grinding pressure, the grinding pressure is more stable, meanwhile, a pneumatic membrane cut-off valve is arranged between the outlet of the refrigeration dryer and a grinding machine, the gas to be removed from the grinding machine can be quickly cut off when the pressure is unstable, and the stability and controllability of the.
4. According to the invention, one side of the interior of the double-screw feeder is movably connected with the pneumatic knocking hammer, part of materials which are adhered with moisture are easy to adhere to the inner wall of the hopper and cannot fall down during discharging, so that blockage is easy to cause, the pneumatic knocking hammer is arranged in the hopper and can knock the inner wall of the hopper through air pump driving, so that the materials are well prevented from adhering to the inner wall of the hopper, one end of the double-screw feeder is fixedly connected with a frequency converter, the requirements on feeding speed are different under different conditions, most of the existing feeders are fixed in feeding speed and cannot be well adjusted, and the frequency converter is of a variable resistance structure and is used for changing the output power of the feeder by changing the resistance value of the feeder, so that the effect of changing the feeding speed is achieved.
5. According to the double-screw feeder, the other side of the double-screw feeder is connected with a weight measuring automatic feeding valve in a lap joint mode, whether the feeding is full or not needs to be judged manually by the conventional device, the weight measuring instrument measures the weight of materials in the grinder through a sensor, the materials in the grinder are kept in a certain range by utilizing a feeding system, manual participation is not needed, the automation of the device is well reflected, an integrated electric control cabinet is fixedly connected to the bottom end of a device main body, the control elements of the conventional device are dispersed everywhere and are not convenient for workers to control, the integrated electric control cabinet is an electric control center of the device, related electric elements such as a touch screen, an oxygen content analyzer and a weight measuring meter are arranged on a panel, the related elements can be controlled in a centralized and unified mode, and the integrity of the device is well reflected.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged schematic view of the invention at A;
FIG. 3 is an enlarged view of the invention at B;
the labels in the figure are: 1. the device comprises a device body, 2, a hopper, 3, a double-screw feeder, 4, a pneumatic knocking hammer, 5, a frequency converter, 6, a weight-measuring automatic feeding valve, 7, a grinding layer, 8, a nozzle, 9, a sorting layer, 10, a sorting wheel, 11, a secondary grinding port, 12, a separator, 13, a charging barrel, 14, a filter, 15, a pulse cleaning device, 16, micropores, 17, an automatic oxygen discharge valve, 18, a mechanical oxygen discharge valve, 19, a compressor, 20, a refrigeration dryer, 21, a cooling water inlet and outlet, 22, a pneumatic membrane cut-off valve, 23, a small regulating valve, 24, a large regulating valve, 25, a low-pressure tank, 26, an integrated electric control cabinet, 27 and a part accommodating groove.
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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-3, the present invention provides a technical solution: an airflow mill device for neodymium iron boron production comprises a device main body 1, a hopper 2 and a double-screw feeder 3, wherein the hopper 2 is embedded and connected to the top of the device main body 1, and the double-screw feeder 3 is movably connected to one side inside the device main body 1;
the device comprises a device main body 1, a grinding layer 7, a nozzle 8, a sorting layer 9, a sorting wheel 10, a secondary grinding port 11, a separator 12 and a charging barrel 13, wherein the grinding layer 7 is connected to the bottom of one side of the device main body 1 in an overlapping manner, the nozzle 8 is fixedly connected to the bottom inside the grinding layer 7, the sorting layer 9 is fixedly connected to the top of the grinding layer 7, the sorting wheel 10 is movably connected to one side inside the sorting layer 9, the secondary grinding port 11 is fixedly connected to one side of the bottom of the sorting layer 9, the separator 12;
a filter 14 is fixedly connected to the middle part of the bottom of the separator 12, a pulse cleaning device 15 is fixedly connected to one side of the top inside the filter 14, micropores 16 are connected to one side of the pulse cleaning device 15 in a lap joint manner, an automatic oxygen exhaust valve 17 is fixedly connected to one side of the bottom inside the filter 14, and a mechanical oxygen exhaust valve 18 is fixedly connected to the other side of the bottom inside the filter 14;
the filter 14 is connected with a compressor 19 in an overlapping mode on one side of the bottom of the filter, a cold dryer 20 is connected with the top of one side of the compressor 19 in an overlapping mode, a cooling water inlet and outlet 21 is fixedly connected to one side of the interior of the cold dryer 20, a pneumatic film cut-off valve 22 is fixedly connected to the top of the cold dryer 20, a small adjusting valve 23 is connected with one side of the pneumatic film cut-off valve 22 in an overlapping mode, a large adjusting valve 24 is connected with one side of the small adjusting valve 23 in an overlapping mode, and a low-pressure tank 25 is fixedly connected to the bottom of the.
Preferably, inside one side swing joint of double screw feeder 3 has pneumatic knocking hammer 4, because the part is stained with the material of moisture and glues easily and can't fall on the hopper inner wall when the unloading, causes the jam easily, strikes hammer 4 through setting up pneumatics, and pneumatic knocking hammer 4 sets up inside the hopper, through the air pump drive, can strike the inner wall of hopper to fine prevented that the material from gluing on the hopper inner wall.
Preferably, the one end fixedly connected with converter 5 of double helix feeder 3, because the requirement is different to the feed rate under the different situation, current batcher is fixed feed rate mostly, unable fine regulation, and through setting up converter 5, converter 5 is the varistor structure, and then changes the output of batcher through the resistance value that changes the batcher to reach the effect that changes feed rate.
Preferably, the opposite side overlap joint of double screw feeder 3 links to each other and has a check weighing automatic feed valve 6, and current device needs the manual work to judge whether reinforced filling, and is comparatively troublesome, through setting up check weighing automatic feed valve 6, the check weighing instrument passes through the material weight in the sensor measurement mill, utilizes charging system, makes the material in the mill keep in certain extent to need not artifical the participation, the fine automaticity that has embodied the device.
Preferably, the bottom end of the device main body 1 is fixedly connected with the integrated electric control cabinet 26, control elements of the existing device are scattered around and are not convenient for workers to control, and by arranging the integrated electric control cabinet 26, the integrated electric control cabinet 26 is an electric control center of the device, and related electric elements such as a touch screen, an oxygen content analyzer and a weight measuring meter are arranged on a panel, so that the related elements can be intensively and uniformly controlled, and the integrity of the device is well embodied.
Preferably, groove 9 is accomodate to bottom one side fixedly connected with part of device main part 1, is operating the device, needs to use relevant spare part and instrument, and the spare part instrument is placed everywhere and is taken place easily and pile and lose, accomodates groove 9 through setting up the part, and groove 9 is accomodate for the structure of accomodating with the device is integrative to the part, and the staff can pack relevant instrument into and store in the groove 9 is accomodate to the fine accomodating convenience that has embodied the device.
Preferably, the grinding layer 7 at the bottom of one side of the device body 1, the nozzle 8 at the bottom of the inside of the grinding layer 7, the sorting layer 9 at the top of the grinding layer 7, the sorting wheel 10 at one side of the inside of the sorting layer 9, the secondary grinding port 11 at one side of the bottom of the sorting layer 9, the separator 12 at one side of the sorting layer 9 and the charging barrel 13 at one side of the bottom of the separator 12 jointly form a high-efficiency grinding mechanism, the existing grinding device has large grinding particles, does not have a secondary grinding design and has poor grinding effect, through arranging the high-efficiency grinding mechanism, materials enter the grinding layer 7 through the feeding mechanism, high-pressure nitrogen provided by a compressor enters the grinding machine through a pressure regulating mechanism and a cold dryer, the nozzle 8 accelerates gas, the high-pressure nitrogen is sprayed into the grinding machine at an ultrasonic speed, the materials are accelerated to form a fluidized bed along with the gas, the materials collide in the fluidized bed to become thin, the bottom is sprayed, the motor drives the sorting wheel 10 to separate fine powder, the fine powder is discharged from the side of the discharging cylinder and enters the separator 12, coarse powder slides back to the secondary grinding port 11 from the wall to be continuously ground until being separated, the mixture of air flow and the fine powder rotates in the separator 12 to generate centrifugal force, the fine powder is thrown out and is loaded into the charging cylinder 13 through the discharging valve, and therefore the grinding of the material is efficiently and automatically completed, and the grinding efficiency of the device is well reflected.
Preferably, the filter 14 at the middle part of the bottom of the separator 12, the pulse cleaning device 15 at one side of the top inside the filter 14, the micropores 16 at one side of the pulse cleaning device 15, the automatic oxygen discharge valve 17 at one side of the bottom inside the filter 14 and the mechanical oxygen discharge valve 18 at the other side of the bottom inside the filter 14 jointly form a filtering circulation mechanism, gas is discharged after grinding, and is wasted because the gas is directly discharged, the existing device is not provided with a good circulation recovery design, the separated gas enters the filter 14 through a pipeline by arranging the filtering circulation mechanism, the pulse cleaning device 15 in the filter 14 generates pulse airflow, fine powder is discharged from the micropores 16 through back blowing, so that the airflow is kept smooth, the rear end of the filter 14 is connected with the mechanical oxygen discharge valve 18 and the automatic oxygen discharge valve 17, when the oxygen content is high, the system automatically discharges and supplements nitrogen, the treated gas can directly enter the compressor 19 for circulation use, thereby well reflecting the cyclicity of the device.
Preferably, a compressor 19 at one side of the bottom of the filter 14, a cooling and drying machine 20 at the top of the compressor 19, a cooling water inlet and outlet 21 at one side of the interior of the cooling and drying machine 20, a pneumatic film cut-off valve 22 at the top of the cooling and drying machine 20, a small regulating valve 23 at one side of the pneumatic film cut-off valve 22, a large regulating valve 24 at one side of the small regulating valve 23 and a low pressure tank 25 at the bottom of the large regulating valve 24 form a grinding and pressure stabilizing cooling mechanism, the granularity of the ground powder is stable only because the grinding pressure in the grinding machine is stable, the air pressure cannot be stably controlled by the conventional device, the granularity of the powder is not stable enough, the temperature of the gas compressed by the compressor is high by arranging the grinding and pressure stabilizing cooling mechanism, the cooling and drying machine 20 is required to be cooled, cooling water is injected into the cooling water inlet and outlet 21 during cooling, the gas passing through the cooling and drying machine 20 can be well cooled and dried, and then the small regulating valve 23 and the, the large regulating valve 24 is controlled by the low pressure tank 25, when the compressor 19 is just started, the pressure is low, the pressure 25 is very low, at the moment, the large regulating valve 24 is fully opened to carry out small circulation, the air supplementing valve is fully opened to supplement air to the system to the maximum extent, the small regulating valve 23 is used for regulating grinding pressure, so that the grinding pressure is more stable, meanwhile, the pneumatic film cut-off valve 22 is arranged between the outlet of the cold drying machine 20 and the grinding machine, the gas to be removed from the grinding machine can be quickly cut off when the pressure is unstable, and the stability and the controllability of the device are well reflected.
The working principle is as follows: firstly, by arranging the integrated electric control cabinet 26, wherein the integrated electric control cabinet 26 is an electric control center of the device, and related electric elements such as a touch screen, an oxygen content analyzer, a weight meter and the like are arranged on a panel, so that the related elements can be intensively and uniformly controlled, and the integrity of the device is well reflected;
then, by arranging the part accommodating groove 9, the part accommodating groove 9 is an accommodating structure integrated with the device, and a worker can put related tools into the part accommodating groove 9 for temporary storage, so that the accommodating convenience of the device is well embodied;
then, by arranging the high-efficiency grinding mechanism, the material enters the grinding layer 7 through the feeding mechanism, high-pressure nitrogen provided by the compressor enters the grinding machine through the pressure regulating mechanism and the cold dryer, the gas is accelerated by the nozzle 8, the high-pressure nitrogen is sprayed into the grinding machine at an ultrasonic speed, the material is accelerated along with the gas to form a fluidized bed, the material is collided and thinned in the fluidized bed, the material is sprayed at the bottom, the crushed powder is blown to the separation layer 9 by the nozzle 8, the fine powder is separated by the separation wheel 10 driven by the motor, the material is discharged from the side of the discharge cylinder and enters the separator 12, the coarse powder slides back to the secondary grinding port 11 on the wall to be continuously ground until being separated, the mixture of the airflow and the powder rotates in the separator 12 to generate centrifugal force, the powder is thrown out and is loaded into the, therefore, the grinding of the materials is efficiently and automatically completed, and the grinding efficiency of the device is well embodied;
next, by arranging a filtering circulation mechanism, the separated gas enters a filter 14 through a pipeline, a pulse cleaning device 15 in the filter 14 generates pulse airflow, fine powder is discharged from micropores 16 through back flushing, the airflow is kept smooth, the rear end of the filter 14 is connected with a mechanical oxygen discharge valve 18 and an automatic oxygen discharge valve 17, when the oxygen content is high, the system automatically discharges and supplements nitrogen, and the treated gas can directly enter a compressor 19 for recycling, so that the cyclicity of the device is well embodied;
finally, by arranging a grinding pressure-stabilizing cooling mechanism, the temperature of the gas compressed by a compressor is very high and needs to be reduced, by arranging a cooling and drying machine 20, cooling water is injected into a cooling water inlet/outlet 21 during cooling, the gas passing through the cooling and drying machine 20 can be well cooled and dried, then a small regulating valve 23 and a large regulating valve 24 are arranged on a bypass pipeline, the large regulating valve 24 is controlled by a low-pressure tank 25, the pressure of the low pressure and the pressure of the 25 are very low when the compressor 19 is just started, at the moment, the large regulating valve 24 is fully opened, a system is fully opened for small circulation, a gas supplementing valve is fully opened to supplement gas to the system to the maximum extent, the small regulating valve 23 is used for regulating the grinding pressure, so that the grinding pressure is more stable, meanwhile, a pneumatic membrane cut-off valve 22 is arranged between the outlet of the cooling and drying machine 20 and a grinding machine, the gas for removing the grinding machine can be quickly cut off, the working principle of the air flow grinding device for producing the neodymium iron boron is that.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (9)

1. The utility model provides an air current grinds device for neodymium iron boron production, includes device main part (1), hopper (2) and double helix feeder (3), its characterized in that: the top of the device main body (1) is embedded and connected with a hopper (2), and one side inside the device main body (1) is movably connected with a double-screw feeder (3);
the device comprises a device main body (1), a grinding layer (7) is connected to the bottom of one side of the device main body (1) in a lap joint mode, a nozzle (8) is fixedly connected to the bottom of the interior of the grinding layer (7), a separation layer (9) is fixedly connected to the top of the grinding layer (7), a separation wheel (10) is movably connected to one side of the interior of the separation layer (9), a secondary grinding port (11) is fixedly connected to one side of the bottom of the separation layer (9), a separator (12) is connected to one side of the separation layer (9) in a lap joint mode, and a charging barrel (13) is fixedly connected to one side of the bottom of the separator (12);
a filter (14) is fixedly connected to the middle part of the bottom of the separator (12), a pulse cleaning device (15) is fixedly connected to one side of the top inside the filter (14), micropores (16) are connected to one side of the pulse cleaning device (15) in a lap joint mode, an automatic oxygen exhaust valve (17) is fixedly connected to one side of the bottom inside the filter (14), and a mechanical oxygen exhaust valve (18) is fixedly connected to the other side of the bottom inside the filter (14);
the lapping of bottom one side of filter (14) has linked together compressor (19), one side top lapping of compressor (19) has linked together cold machine (20) of doing, the inside one side fixedly connected with cooling water access & exit (21) of cold machine (20) of doing, the pneumatic film trip valve of top fixedly connected with (22) of cold machine (20) of doing, one side lapping of pneumatic film trip valve (22) has linked together little regulating valve (23), one side lapping of little regulating valve (23) has linked together big regulating valve (24), the bottom fixedly connected with low pressure jar (25) of big regulating valve (24).
2. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: one side of the interior of the double-screw feeder (3) is movably connected with a pneumatic knocking hammer (4).
3. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: one end of the double-screw feeder (3) is fixedly connected with a frequency converter (5).
4. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: the other side of the double-screw feeder (3) is connected with an automatic weight-measuring feeding valve (6) in a lap joint manner.
5. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: the bottom end of the device main body (1) is fixedly connected with an integrated electric control cabinet (26).
6. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: a part accommodating groove (9) is fixedly connected to one side of the bottom of the device main body (1).
7. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: the device comprises a grinding layer (7) at the bottom of one side of a device body (1), a nozzle (8) at the bottom of the inside of the grinding layer (7), a separation layer (9) at the top of the grinding layer (7), a separation wheel (10) at one side of the inside of the separation layer (9), a secondary grinding port (11) at one side of the bottom of the separation layer (9), a separator (12) at one side of the separation layer (9) and a charging barrel (13) at one side of the bottom of the separator (12) which jointly form a high-efficiency grinding mechanism.
8. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: the filter (14) at the middle part of the bottom of the separator (12), the pulse cleaning device (15) at one side of the top inside the filter (14), the micropores (16) at one side of the pulse cleaning device (15), the automatic oxygen discharge valve (17) at one side of the bottom inside the filter (14) and the mechanical oxygen discharge valve (18) at the other side of the bottom inside the filter (14) jointly form a filtering circulation mechanism.
9. The air flow mill device for neodymium iron boron production according to claim 1, characterized in that: compressor (19) of filter (14) bottom one side, cold machine (20) are done at compressor (19) one side top, the cooling water access & exit (21) of the inside one side of cold machine (20) are done, pneumatic film trip valve (22) at cold machine (20) top of doing, little regulating valve (23) of pneumatic film trip valve (22) one side, big regulating valve (24) and low-pressure jar (25) of big regulating valve (24) bottom of little regulating valve (23) one side constitute jointly and grind steady pressure cooling mechanism.
CN202010780556.2A 2020-08-06 2020-08-06 A air current grinds device for neodymium iron boron production Pending CN112024087A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201807444U (en) * 2010-08-23 2011-04-27 宁波韵升股份有限公司 Automatic feeding apparatus for sintered neodymium-iron-boron powder jet mill
CN202778652U (en) * 2012-09-11 2013-03-13 江西磊源永磁材料有限公司 Jet mill removing oxygen by circulating flow
US20140306043A1 (en) * 2011-02-04 2014-10-16 Climax Molybdenum Company Apparatus for producing molybdenum disulfide powders
CN204700311U (en) * 2015-06-18 2015-10-14 包头金山磁材有限公司 A kind of airflow milling of sintered Nd-Fe-B permanent magnetic material
CN207207062U (en) * 2017-08-29 2018-04-10 黑龙江林海华安新材料股份有限公司 It is a kind of that there is the PVC powder feed system for alleviating bridging of powder function

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201807444U (en) * 2010-08-23 2011-04-27 宁波韵升股份有限公司 Automatic feeding apparatus for sintered neodymium-iron-boron powder jet mill
US20140306043A1 (en) * 2011-02-04 2014-10-16 Climax Molybdenum Company Apparatus for producing molybdenum disulfide powders
CN202778652U (en) * 2012-09-11 2013-03-13 江西磊源永磁材料有限公司 Jet mill removing oxygen by circulating flow
CN204700311U (en) * 2015-06-18 2015-10-14 包头金山磁材有限公司 A kind of airflow milling of sintered Nd-Fe-B permanent magnetic material
CN207207062U (en) * 2017-08-29 2018-04-10 黑龙江林海华安新材料股份有限公司 It is a kind of that there is the PVC powder feed system for alleviating bridging of powder function

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