CN113731609B - Preparation device for preparing high-activity iron-based energetic composite material - Google Patents
Preparation device for preparing high-activity iron-based energetic composite material Download PDFInfo
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- CN113731609B CN113731609B CN202111107590.4A CN202111107590A CN113731609B CN 113731609 B CN113731609 B CN 113731609B CN 202111107590 A CN202111107590 A CN 202111107590A CN 113731609 B CN113731609 B CN 113731609B
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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
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/14—Stamping mills
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/30—Driving mechanisms
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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
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
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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
- 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
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
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- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to the technical field of iron powder treatment, in particular to a preparation device for preparing a high-activity iron-based energetic composite material, which comprises a powder selecting machine body and a feeding unit; the feeding unit is arranged at the top of the powder selecting machine body; the feeding unit comprises a feeding hopper, a support, a protective cover, a crushing arm, a motor and a first shaft; the inner surface of the feed hopper is conical, and the protective cover is arranged in the middle of the inner part of the feed hopper through a bracket; according to the invention, the first shaft and the crushing arm are arranged, the motor is started to drive the first shaft to enable the crushing arm to rotate, and the end part of the crushing arm extends into the gap between the end part of the protective cover and the conical inner surface of the feed hopper, so that iron powder lumps accumulated at the position are beaten and crushed, and the lumps formed by agglomeration in iron powder are beaten and dispersed again to form iron powder and slide down; and the crushed lumps are cleaned, so that the feed hopper is prevented from being blocked, and the continuous feeding of the iron powder is influenced.
Description
Technical Field
The invention relates to the technical field of iron powder treatment, in particular to a preparation device for preparing a high-activity iron-based energetic composite material.
Background
The high-activity iron-based energetic composite material integrates the advantages of various materials, and has a series of advantages of high strength, high modulus, small specific gravity and the like; the high-activity UPET iron powder is high in safety and good in using effect; the prepared product has good functional metal dye characteristics, no operation risk is caused corresponding to the prior art of the same type, and the operation effect is more obvious; but the manufacturing technology has higher threshold and large manufacturing difficulty.
In a series of devices for producing nanoscale iron powder, a powder concentrator can centrifuge the iron powder particles which are not classified, screen out the iron powder particles which do not meet the production requirements, and select qualified iron powder particles to enter the next procedure, so that the next procedure is safer and more reliable and has higher efficiency; however, the phenomenon of iron powder agglomeration often occurs in the entering iron powder, and after the iron powder agglomerates enter the powder selecting machine body, the abrasion of blades in the powder selecting machine body is increased, and meanwhile, the screening of iron powder with different particle sizes is also influenced, so that the quality of the finally obtained iron powder is influenced.
The invention also relates to a preparation device for preparing high-activity iron-based energetic composite materials, for example, Chinese invention of application No. CN201921580856.5 discloses a high-efficiency internal circulation powder concentrator of carbonyl iron powder, which comprises a powder concentrator body with a feed inlet arranged at the top end, a temporary storage hopper is fixedly connected with the outer side of the powder concentrator at one side of the feed inlet of the powder concentrator, a guide cylinder is fixedly connected with the bottom of the temporary storage hopper, the guide cylinder is fixedly connected with the side wall of the feed inlet of the powder concentrator, a first motor is fixedly connected with the outer side wall of the feed inlet of the powder concentrator, a motor shaft of the first motor penetrates through the side wall of the feed inlet of the powder concentrator and extends into the guide cylinder, the motor shaft of the first motor is rotatably connected with the side wall of the feed inlet of the powder concentrator, a plurality of scattering columns which can re-scatter the carbonyl iron powder agglomerated in the guide cylinder are fixedly connected with the circumferential side wall of one end of the motor shaft of the first motor, the situation that agglomerated carbonyl iron powder enters the powder concentrator and collides with blades rotating at high speed in the separator to cause damage to the blades is reduced, and the situation that the blades need to be replaced is reduced, so that the effect of manpower and material resources is saved; however, the above patents still have defects, the number of motors used is large, the cost of the equipment is increased, and in the process of iron powder entering, the inclined feed port causes the sliding iron powder to be in close contact with the part of the inner surface of the feed port close to the bottom, so that the part of the inner surface of the feed port close to the bottom is greatly abraded, and the service life of the feed port is influenced; the motor connected with the auger is directly positioned in the feed inlet and is impacted by the sliding iron powder, so that the motor is easily damaged, and the normal operation of the equipment is influenced; and it is difficult to ensure that the iron powder agglomerates are sufficiently crushed only by the action of the breaking-up columns.
In view of the above, the present invention solves the above technical problems by providing a manufacturing apparatus for manufacturing a high-activity iron-based energetic composite material.
Disclosure of Invention
In order to make up for the defects of the prior art, the problems that the cost is high, an internal motor is easy to damage and the crushing effect on iron powder blocks is insufficient in the working process of the conventional iron powder separator are solved; the invention provides a preparation device for preparing a high-activity iron-based energetic composite material.
The technical scheme adopted by the invention for solving the technical problems is as follows: the preparation device for preparing the high-activity iron-based energetic composite material comprises a powder selecting machine body and a feeding unit; the feeding unit is arranged at the top of the powder selecting machine body; the feeding unit comprises a feeding hopper, a support, a protective cover, a crushing arm, a motor and a first shaft; the feeder hopper internal surface is the toper, the visor passes through the support mounting at the inside middle part of feeder hopper, the visor upper surface is the arc, and visor internally mounted chamber, the inside motor that has linked firmly of mounting chamber, the output shaft and the axle of motor link to each other, an axle runs through the mounting chamber lateral wall and stretches into feeder hopper inner region, and an off-axial surface evenly is equipped with the crushed aggregates arm, crushed aggregates arm end kickup stretches into the clearance position between visor and the feeder hopper internal surface.
During working, the nanoscale iron powder with concentrated particle size distribution is needed in the process of preparing the high-activity iron-based energetic composite material, and in the process of preparing the nanoscale iron powder, firstly, iron blocks are processed into the iron powder through a ball mill, then the iron powder is sent into a powder concentrator body to be treated, the iron powder with the particle size meeting the requirement is recovered, and the iron powder with the larger particle size is separated and sent into the ball mill again to be ground; in order to avoid the problem that agglomeration of iron powder causes the iron powder to be conveyed into the powder selecting machine body in the iron powder conveying process, the abrasion of blades in the powder selecting machine body is increased, meanwhile, the screening of the iron powder with different particle sizes is also influenced, and further, the quality of the finally obtained iron powder is influenced, a feeding unit is arranged, after the iron powder is conveyed into the feeding hopper, the iron powder flows into the upper surface of the protective cover through gaps among the supports and falls on the upper surface of the protective cover, as the upper surface of the protective cover is arc-shaped, the iron powder slides off from the upper surface of the protective cover, the end part of the protective cover is close to the conical inner surface of the feeding hopper, the sliding iron powder slides downwards along the conical inner surface of the feeding hopper, and the iron powder sliding on the conical inner surface of the feeding hopper is more uniformly distributed; the volume of the lumps formed by agglomeration in the iron powder is large and is difficult to pass through the gap between the end part of the protective cover and the conical inner surface of the feed hopper; starting the motor to enable the first shaft to drive the crushing arm to rotate, and enabling the end part of the crushing arm to extend into a gap between the end part of the protective cover and the conical inner surface of the feeding hopper, so that iron powder lumps accumulated at the end part of the protective cover are beaten and crushed, and lumps formed by agglomeration in the iron powder are beaten and dispersed again to form iron powder and slide down; the crushed lumps are cleaned, so that the blockage of the feed hopper is avoided, and the continuous feeding of iron powder is influenced; in addition, the motor is positioned in the mounting cavity in the protective cover and is not in direct contact with the iron powder, so that the situation that the sliding iron powder blocks the normal operation of the motor is effectively avoided, and the working safety of the motor is ensured; the iron powder is subjected to powder selection treatment to obtain iron powder with the particle size meeting the standard, and then the iron powder is sent to the next production process.
Preferably, the first shaft comprises a first part and a second part, and the first part is connected with the motor and is superposed with a central shaft in the feed hopper; no. two positions are located the portion below and deviate the inside center pin of feeder hopper, the bits of broken glass arm links firmly No. two external surfaces.
When the feeding hopper works, the first part and the second part on the first shaft are arranged in an eccentric mode, the second part deviates from a central shaft in the feeding hopper, and the crushed material arms are distributed on the outer surface of the second part, so that after the first shaft is driven by the motor to rotate, the second part continuously performs eccentric rotation motion, and the crushed material arms perform eccentric rotation motion; consequently in evenly distributed's crushed aggregates arm, and the interval between the feeder hopper internal surface is different each other, the less crushed aggregates arm of interval produces effectual crushing effect to the lump attached to on the feeder hopper internal surface at the rotation in-process, and the great crushed aggregates arm of interval carries out effectual crushing effect to the lump of visor tip surface, carry out abundant clearance to the iron powder lump that piles up the clearance between protective cover tip and feeder hopper toper internal surface through the different crushed aggregates arm of interval distribution, further avoid the iron powder lump to cause the jam of feeder hopper, and the internal portion of income selection powder machine aggravates the wearing and tearing of the inside blade of selection powder machine body.
Preferably, the part of No. two portion surface positions in the feeder hopper bottom is equipped with the lug, the lug is the ball, and the surface of lug evenly is equipped with crushed aggregates piece, crushed aggregates piece tip is the toper.
When the iron powder processing device works, along with the continuous addition of the iron powder, the iron powder is gradually gathered at the outlet end part of the feeding hopper and falls down to the powder selecting machine body after being processed by the bumps, because the inner surface of the feeding hopper is conical, the section of the inner surface of the feeding hopper is the smallest at the joint of the feeding hopper and the powder selecting machine body, and the falling iron powder and the block masses with smaller volumes are likely to be accumulated at the joint, so that the smooth falling of the iron powder is influenced, and the processing efficiency of the iron powder is influenced; and the eccentric settings of No. two portions to and the lug that No. two portion surfaces set up, produce at eccentric pivoted in-process to piling up the iron powder lump at the feeder hopper top and stir crushing effect, and the bits of broken glass that lug surface evenly set up have produced further crushing effect to accumulational iron powder lump at the rotation in-process for the iron powder of whereabouts receives the regrinding effect, has promoted the crushing effect to the iron powder lump.
Preferably, a grinding cavity is arranged in the powder selecting machine body and is positioned at the bottom of the feed hopper, and the section inside the grinding cavity is square; the grinding chamber is internally and symmetrically provided with grinding plates, the tops of the grinding plates are rotationally connected with the side wall of the grinding chamber, the opposite surfaces of the grinding plates are arc-shaped and are uniformly provided with sliding grooves, the opposite arc-shaped surfaces of the grinding plates are contacted, and the parts of the grinding plates, which are opposite to the side wall of the grinding chamber, are connected with the side wall of the grinding chamber through springs; the bottom of the second part extends into the grinding cavity and is in contact with the arc-shaped surface of the grinding plate; and a filter screen is arranged at the bottom of the grinding cavity.
When the iron powder separator works, after the iron powder falls into the grinding cavity, the iron powder falls on the opposite arc surfaces of the symmetrically arranged grinding plates and slides downwards along the arc surfaces, the dispersed iron powder can smoothly fall through the chutes uniformly arranged on the grinding plates and enters the powder separator body through the filter screen for powder separation treatment, and the agglomerated masses are blocked above the gap of the contact parts of the opposite grinding plates; along with the rotation of the second part, the end of the second part firstly contacts the grinding plate on one side and extrudes the grinding plate to move towards the direction close to the side wall of the grinding cavity, the extrusion force applied to the grinding plate on the other side is reduced, the grinding plate moves towards the direction close to the grinding plate in contact with the second part under the action of the connected spring, and the two grinding plates are kept in contact; at the moment, because the two grinding plates slide relative to the arc-shaped surface, the iron powder blocks positioned in the gap are pressed and ground; and along with No. two tip continuation rotations to extrude the board of milling of opposite side, originally compressed and rotated the board of milling resets and removes to the direction that is close to the opposite side board of milling this moment, so in turn for the lump that is located the clearance receives the effect of rubbing with the hands repeatedly between two boards of milling and smashing, thereby makes the iron powder lump more abundant by kibbling, guarantees to get into the inside iron powder of selection powder organism more carefully.
Preferably, No. two portion bottoms are to the direction bending that is close to the chamber lateral wall that grinds, and No. two portion bottoms are equipped with the ball, and No. two portion bottoms and the region that the surface of grinding plate distributes and have the spout contact.
When the grinding plate is in work, the bottom of the second part is bent, so that the extrusion force on the surface of the grinding plate is further enhanced when the second part is used for extruding the surface of the grinding plate, the mutual extrusion and crushing action between the opposite surfaces of the two grinding plates is further enhanced, and the lumps on the grinding plates are crushed more fully; the ball arranged at the end part of the second part further reduces the friction force between the end part of the second part and the surface of the grinding plate when the ball slides in contact with the surface of the grinding plate, thereby reducing the abrasion of the surface of the grinding plate; and the ball is when evenly distributed's spout, and the ball changes the extrusion force of the board of milling at the in-process that imbeds the spout and roll out to make the vibration aggravation of the board of milling, accelerated the iron powder that is located in the spout and along spout landing downwards, improved the efficiency that the iron powder passes through, avoid the iron powder to pile up the jam that causes the spout in the spout, influence the normal work of spout.
Preferably, the cross section of the filter screen is arc-shaped, and the middle part of the filter screen is bent downwards; the lower end of the end part of the grinding plate is provided with an arc-shaped pressing block, the surface of the bottom of the arc-shaped pressing block is arc-shaped, and the arc-shaped pressing block is in contact with the middle part of the filter screen.
When the iron powder filter is in operation, because the middle part of the surface of the filter screen is bent downwards, in the falling process of the iron powder, the sufficiently fine iron powder falls through the filter screen, and iron powder lumps which cannot pass through the filter screen are accumulated on the filter screen and slide down to the middle part of the filter screen under the action of the arc-shaped surface of the filter screen; the arc-shaped pressing block at the bottom of the grinding plate is in close contact with the middle part of the filter screen, and in the process that the grinding plate is pressed to rotate, the arc-shaped pressing block slides in the middle part of the filter screen and plays a role in grinding iron powder lumps, and iron powder can pass through the filter screen in an accelerated manner under the extrusion effect; and because the filter screen is the elasticity material, appear vibrating when the filter screen receives the arc briquetting extrusion for the iron powder lump on the filter screen rolls the vibration, and fully receives gliding arc briquetting's crushing effect, further avoids the wearing and tearing that the selection powder organism received too big.
The invention has the following beneficial effects:
1. according to the preparation device for preparing the high-activity iron-based energetic composite material, the first shaft and the crushing arm are arranged, the motor is started to drive the first shaft to enable the crushing arm to rotate, and the end part of the crushing arm extends into the gap between the end part of the protective cover and the conical inner surface of the feed hopper, so that iron powder lumps accumulated at the position are beaten and crushed, and the lumps formed by agglomeration in iron powder are beaten and dispersed again to form iron powder and slide down; and the crushed lumps are cleaned, so that the blockage of the feed hopper is avoided, and the continuous feeding of the iron powder is influenced.
2. According to the preparation device for preparing the high-activity iron-based energetic composite material, the second part is eccentrically arranged, so that the end part of the second part alternately extrudes the two grinding plates which are kept in contact, relative sliding occurs between the two grinding plates relative to the arc-shaped surface, and the iron powder lumps positioned in the gap are extruded and crushed; and along with No. two tip continuation rotations to extrude the board of milling of opposite side, originally compressed and rotated the board of milling reset and move to the direction that is close to the board of milling of opposite side this moment, so in turn for the lump that is located the clearance receives the effect of rubbing with the hands repeatedly between two boards of milling and smashes, thereby makes iron powder lump more abundant by kibbling.
Drawings
The invention is further described below with reference to the accompanying drawings;
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a detail view of the grinding plate of FIG. 2;
in the figure: the grinding machine comprises a grinding machine body 1, a feeding unit 2, a feeding hopper 21, a support 22, a protective cover 23, a mounting cavity 231, a crushing arm 24, a motor 25, a first shaft 26, a first part 261, a second part 262, a bump 27, a crushing block 271, a grinding cavity 28, a grinding plate 29, a sliding groove 291, a filter screen 292 and an arc-shaped pressing block 293.
Detailed Description
The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.
As shown in fig. 1 to 3, the preparation device for preparing the high-activity iron-based energetic composite material comprises a powder selecting machine body 1 and a feeding unit 2; the feeding unit 2 is arranged at the top of the powder selecting machine body 1; the feeding unit 2 comprises a feeding hopper 21, a bracket 22, a protective cover 23, a crushing arm 24, a motor 25 and a first shaft 26; the internal surface of feeder hopper 21 is the toper, visor 23 passes through support 22 to be installed at the inside middle part of feeder hopper 21, visor 23 upper surface is the arc, and 23 inside installation cavity 231 that is equipped with of visor, the inside motor 25 that has linked firmly of installation cavity 231, the output shaft of motor 25 links to each other with axle 26, axle 26 runs through installation cavity 231 lateral wall and stretches into feeder hopper 21 inner region, and axle 26 surface evenly is equipped with shredded material arm 24, 24 tip kickups of shredded material arm stretch into the clearance position between visor 23 and the 21 internal surface of feeder hopper.
During working, the nanoscale iron powder with concentrated particle size distribution is needed in the process of preparing the high-activity iron-based energetic composite material, and in the process of preparing the nanoscale iron powder, firstly, iron blocks are processed into the iron powder through a ball mill, then the iron powder is sent into a powder selecting machine body 1 for treatment, the iron powder with the particle size meeting the requirement is recovered, and the iron powder with larger particle size is separated out and sent into the ball mill again for grinding treatment; in order to avoid the agglomeration of the iron powder during the transportation process, which causes the agglomerated iron powder to be fed into the powder concentrator body 1, so that the abrasion of blades inside the powder concentrator body 1 is increased, and simultaneously, the screening of the iron powder with different particle sizes is also influenced, so that the quality of the finally obtained iron powder is influenced, a feeding unit 2 is arranged, after the iron powder is fed into the feeding hopper 21, the iron powder flows into the upper surface of the protective cover 23 through gaps among the brackets 22 and falls on the upper surface of the protective cover 23, because the upper surface of the protective cover 23 is arc-shaped, the iron powder slides down from the upper surface of the protective cover 23, and the end part of the protective cover 23 is close to the conical inner surface of the feeding hopper 21, so that the sliding iron powder slides down along the conical inner surface of the feeding hopper 21, and the iron powder sliding down and distributed on the conical inner surface of the feeding hopper 21 is more uniform; the volume of the lumps formed by agglomeration in the iron powder is large and difficult to pass through the gap between the end part of the protective cover 23 and the conical inner surface of the feed hopper 21; at this time, the motor 25 is started, so that the first shaft 26 drives the crushing arm 24 to rotate, and because the end part of the crushing arm 24 extends into the gap between the end part of the protective cover 23 and the conical inner surface of the feed hopper 21, the iron powder lumps accumulated at the end part are beaten and crushed, so that the lumps formed by agglomeration in the iron powder are beaten and dispersed again into the iron powder to slide down; and the crushed lumps are cleaned, so that the feed hopper 21 is prevented from being blocked, and the continuous feeding of iron powder is influenced; in addition, because the motor 25 is located in the installation cavity 231 inside the protection cover 23 and does not directly contact with the iron powder, the situation that the sliding iron powder hinders the normal operation of the motor 25 is effectively avoided, and the operation safety of the motor 25 is ensured; the iron powder is subjected to powder selection treatment to obtain the iron powder with the particle size meeting the standard, and then the iron powder is sent to the next production process.
As an embodiment of the present invention, the first shaft 26 includes a first portion 261 and a second portion 262, the first portion 261 is connected to the motor 25 and coincides with the central axis inside the feeding hopper 21; the second portion 262 is located below the first portion 261 and is offset from the central axis of the interior of the feed hopper 21, and the breaker arm 24 is attached to the outer surface of the second portion 262.
During operation, the first part 261 and the second part 262 on the first shaft 26 are eccentrically arranged, wherein the second part 262 deviates from the central axis inside the feeding hopper 21, and the crushed material arms 24 are distributed on the outer surface of the second part 262, so that after the motor 25 drives the first shaft 26 to rotate, the second part 262 continuously performs eccentric rotation, so that the crushed material arms 24 perform eccentric rotation; therefore, in the crushed aggregates arm 24 of evenly distributed, and the interval between the internal surface of feeder hopper 21 is different, the crushed aggregates arm 24 that the interval is less produces effectual crushing effect to the lump attached to on the internal surface of feeder hopper 21 at the rotation in-process, and the crushed aggregates arm 24 that the interval is great carries out effectual crushing effect to the lump on the terminal surface of visor 23, carry out abundant clearance to the iron powder lump that piles up in the clearance between the terminal of protective cover 23 and the toper internal surface of feeder hopper 21 through the different crushed aggregates arm 24 of interval distribution, further avoid the iron powder lump to cause the jam of feeder hopper 21, and the inside wearing and tearing of the inside blade of the heavy selection powder organism 1 of income selection powder organism 1.
As an embodiment of the present invention, a bump 27 is disposed on the outer surface of the second portion 262 at the bottom of the feeding hopper 21, the bump 27 is spherical, and the surface of the bump 27 is uniformly provided with the pieces of crumbs 271, and the end of the pieces of crumbs 271 is conical.
During working, with the continuous addition of iron powder, the iron powder is gradually gathered at the outlet end part of the feed hopper 21 and falls down on the powder selecting machine body 1 after being processed by the lug 271, because the inner surface of the feed hopper 21 is conical, the section of the inner surface of the feed hopper 21 is the smallest at the joint of the feed hopper 21 and the powder selecting machine body 1, and the falling iron powder and lumps with smaller volumes are likely to be accumulated at the joint, so that the smooth falling of the iron powder is influenced, and the processing efficiency of the iron powder is influenced; the eccentric arrangement of the second part 262 and the convex blocks 27 arranged on the outer surface of the second part 263 generate a stirring and crushing effect on the iron powder agglomerates accumulated on the top of the feeding hopper 21 in the eccentric rotation process, and the crushed blocks 271 uniformly arranged on the outer surface of the convex blocks 27 generate a further crushing effect on the accumulated iron powder agglomerates in the rotation process, so that the falling iron powder is subjected to a secondary crushing effect, and the crushing effect on the iron powder agglomerates is improved.
As a specific embodiment of the present invention, a grinding chamber 28 is disposed in an area inside the classifier body 1 at the bottom of the feed hopper 21, and the cross section inside the grinding chamber 28 is square; the grinding chamber 28 is internally and symmetrically provided with grinding plates 29, the tops of the grinding plates 29 are rotatably connected with the side wall of the grinding chamber 28, the opposite surfaces of the grinding plates 29 are arc-shaped and uniformly provided with sliding grooves 291, the grinding plates 29 are in contact with the arc-shaped surfaces, and the parts of the grinding plates 29, which are opposite to the side wall of the grinding chamber 28, are connected with the side wall of the grinding chamber 28 through springs; the bottom of the second part 262 extends into the grinding chamber 28 and contacts the curved surface of the grinding plate 29; the bottom of the milling chamber 28 is provided with a screen 291.
In operation, after the iron powder falls into the grinding chamber 28, the iron powder falls on the opposite arc surfaces of the symmetrically arranged grinding plates 29 and slides downwards along the arc surfaces, wherein the dispersed iron powder can smoothly fall through the chutes 291 uniformly arranged on the grinding plates 29 and enter the powder selecting machine body 1 through the filter screen 291 for powder selecting treatment, and the agglomerates formed by agglomeration are blocked above the gap between the contact parts of the opposite grinding plates 29; with the rotation of the second part 262, the second end 262 firstly contacts the grinding plate 29 on one side and presses it to move towards the side wall of the grinding cavity 28, while the pressing force applied to the grinding plate 29 on the other side is reduced and moves towards the grinding plate 29 contacting with the second part 262 under the action of the connected spring, and the two grinding plates 29 are kept in contact; at this time, since the two grinding plates 29 slide relatively to the arc-shaped surface, the iron powder agglomerates located in the gap are crushed; and along with No. two portion 262 tip continue to rotate to extrude the board 29 that mills of opposite side, the board 29 that mills of the pressurized rotation originally resets and moves to the direction that is close to the board 29 that mills of opposite side this moment, so in turn for the lump that is located the clearance receives the effect of rubbing with the hands repeatedly between two boards 29 and smash, thereby makes the iron powder lump smashed more abundant, guarantees that the iron powder that gets into powder concentrator body 1 inside is more fine and close.
In an embodiment of the present invention, the bottom of the second part 262 is curved toward the side wall of the milling chamber 28, the bottom of the second part 262 is provided with balls, and the bottom of the second part 262 is in contact with the area of the milling plate 29 where the sliding grooves 291 are distributed.
In operation, the bottom of the second portion 262 is bent, so that when the end of the second portion 262 presses the surface of the grinding plate 29, the pressing force on the surface of the grinding plate 29 is further enhanced, so that the mutual pressing and crushing action between the opposite surfaces of the two grinding plates 29 is further enhanced, and the lumps on the grinding plate 29 are crushed more sufficiently; the balls arranged at the end part of the second part 262 further reduce the friction force between the end part of the second part 262 and the surface of the grinding plate 29 when the second part 262 slides in contact with the surface of the grinding plate 29, thereby reducing the abrasion of the surface of the grinding plate 29; and the ball is when the spout 291 through evenly distributed, and the ball changes the extrusion force of the board 29 of milling in the in-process that imbeds spout 291 and roll out to make the vibration aggravation of the board 29 of milling, accelerated the iron powder that is located in spout 291 and along spout 291 lapse down, improved the efficiency that the iron powder passes through, avoid the iron powder to pile up and cause the jam of spout 291 in spout 291, influence the normal work of spout 91.
As a specific embodiment of the present invention, the cross-section of the filter screen 292 is arc-shaped, and the middle portion of the filter screen 292 is bent downward; the lower end of the end portion of the grinding plate 29 is provided with an arc-shaped pressing block 293, the bottom surface of the arc-shaped pressing block 293 is arc-shaped, and the arc-shaped pressing block 293 is in contact with the middle of the filter screen 292.
In operation, because the middle part of the surface of the sieve 292 is bent downward, during the falling of iron powder, sufficiently fine iron powder falls through the sieve 292, and iron powder lumps which cannot pass through the sieve 292 are accumulated on the sieve 292 and slide down to the middle part of the sieve 292 under the action of the arc-shaped surface of the sieve 292; the arc-shaped pressing blocks 293 at the bottom of the grinding plate 29 are in close contact with the middle part of the filter screen 292, and in the process that the grinding plate 29 is pressed to rotate, the arc-shaped pressing blocks 293 slide in the middle part of the filter screen 292 and perform a grinding effect on iron powder agglomerates, and iron powder is accelerated to pass through the filter screen 292 under the extrusion effect; and because the filter screen 292 is the elastic material, appear vibrating when the filter screen 292 receives the extrusion of arc briquetting 293 for the iron powder lump on the filter screen 292 rolls the vibration, and fully receives the crushing effect of gliding arc briquetting 293, further avoids the wearing and tearing that the selection powder organism 1 received too big.
The specific working process is as follows:
the preparation method comprises the following steps of (1) preparing a high-activity iron-based energetic composite material by using nanoscale iron powder with concentrated particle size distribution, wherein in the process of preparing the nanoscale iron powder, firstly, iron blocks are processed into the iron powder by using a ball mill, then the iron powder is sent into a powder selecting machine body 1 for treatment, the iron powder with the particle size meeting the requirement is recovered, and the iron powder with larger particle size is separated and sent into the ball mill again for grinding treatment; by arranging the feeding unit 2, after the iron powder is fed into the feeding hopper 21, the iron powder flows into and falls on the upper surface of the protective cover 23 through the gap between the supports 22, because the upper surface of the protective cover 23 is arc-shaped, the iron powder slides down from the upper surface of the protective cover 23, and the end part of the protective cover 23 is close to the conical inner surface of the feeding hopper 21, so that the sliding iron powder slides down along the conical inner surface of the feeding hopper 21, and the sliding iron powder is distributed on the conical inner surface of the feeding hopper 21 more uniformly; the volume of the lumps formed by agglomeration in the iron powder is large and difficult to pass through the gap between the end part of the protective cover 23 and the conical inner surface of the feed hopper 21; at this time, the motor 25 is started, so that the first shaft 26 drives the crushing arm 24 to rotate, and because the end part of the crushing arm 24 extends into the gap between the end part of the protective cover 23 and the conical inner surface of the feed hopper 21, the iron powder lumps accumulated at the end part are beaten and crushed, so that the lumps formed by agglomeration in the iron powder are beaten and dispersed again into the iron powder to slide down; after the iron powder falls into the grinding chamber 28, the iron powder falls on the opposite arc surfaces of the symmetrically arranged grinding plates 29 and slides downwards along the arc surfaces, wherein the dispersed iron powder can smoothly fall through the chutes 291 uniformly arranged on the grinding plates 29 and enter the powder concentrator body 1 through the filter screen 291 for powder concentration treatment, and the agglomerates formed by agglomeration are blocked above the gap between the contact parts of the opposite grinding plates 29; with the rotation of the second part 262, the second end 262 firstly contacts and presses the grinding plate 29 on one side to move towards the side wall of the grinding cavity 28, while the pressing force applied to the grinding plate 29 on the other side is reduced and moves towards the grinding plate 29 contacting with the second part 262 under the action of the connected spring, and the two grinding plates 29 are kept in contact; at this time, the iron powder agglomerates located in the gap are crushed due to the relative sliding between the two grinding plates 29 with respect to the arc-shaped surface; the end part of the second part 262 continues to rotate and extrudes the grinding plate 29 on the other side, at the moment, the grinding plate 29 which is originally pressed and rotated resets and moves towards the direction close to the grinding plate 29 on the other side, and the two grinding plates 29 are alternately rotated in such a way that the blocks positioned in the gap are repeatedly rubbed and crushed by the two grinding plates 29; the iron powder is subjected to powder selection treatment to obtain iron powder with the particle size meeting the standard, and then the iron powder is sent to the next production process.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the 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 scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A preparation facilities for preparing high activity iron-based energetic composite material, its characterized in that: comprises a powder selecting machine body (1) and a feeding unit (2); the feeding unit (2) is arranged at the top of the powder selecting machine body (1); the feeding unit (2) comprises a feeding hopper (21), a support (22), a protective cover (23), a crushing arm (24), a motor (25) and a first shaft (26); the inner surface of the feeding hopper (21) is conical, the protective cover (23) is installed in the middle of the inner part of the feeding hopper (21) through a support (22), the upper surface of the protective cover (23) is arc-shaped, a mounting cavity (231) is formed in the protective cover (23), a motor (25) is fixedly connected to the inside of the mounting cavity (231), an output shaft of the motor (25) is connected with a first shaft (26), the first shaft (26) penetrates through the side wall of the mounting cavity (231) and extends into the inner area of the feeding hopper (21), crushing arms (24) are uniformly arranged on the outer surface of the first shaft (26), and the end parts of the crushing arms (24) are bent upwards and extend into a gap between the protective cover (23) and the inner surface of the feeding hopper (21);
the first shaft (26) comprises a first part (261) and a second part (262), and the first part (261) is connected with the motor (25) and is coincided with the central axis of the inside of the feed hopper (21); the second part (262) is positioned below the first part (261) and is deviated from the central axis in the feeding hopper (21), and the crushing arm (24) is fixedly connected with the outer surface of the second part (262);
a bump (27) is arranged on the part, located at the bottom of the feed hopper (21), of the outer surface of the second part (262), the bump (27) is spherical, material pieces (271) are uniformly arranged on the surface of the bump (27), and the end part of each material piece (271) is conical;
a grinding cavity (28) is formed in the area, located at the bottom of the feed hopper (21), in the powder concentrator body (1), and the cross section of the interior of the grinding cavity (28) is square; the grinding device is characterized in that grinding plates (29) are symmetrically arranged in the grinding cavity (28), the top of each grinding plate (29) is rotatably connected with the side wall of the grinding cavity (28), the opposite surface of each grinding plate (29) is arc-shaped and is uniformly provided with sliding grooves (291), the grinding plates (29) are in contact with the opposite arc-shaped surfaces, and the parts, facing the side wall of the grinding cavity (28), of the grinding plates (29) are connected with the side wall of the grinding cavity (28) through springs; the bottom of the second part (262) extends into the grinding cavity (28) and is in contact with the arc-shaped surface of the grinding plate (29); a filter screen (292) is arranged at the bottom of the grinding cavity (28);
the bottom of the second part (262) is bent towards the direction close to the side wall of the milling cavity (28), balls are arranged at the bottom of the second part (262), and the bottom of the second part (262) is in contact with an area of the surface of the milling plate (29) where the sliding grooves (291) are distributed;
the section of the filter screen (292) is arc-shaped, and the middle part of the filter screen (292) is bent downwards; grind board (29) tip lower extreme and set up arc briquetting (293), arc briquetting (293) bottom surface is the arc, and arc briquetting (293) and filter screen (292) middle part contact.
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| CN202111107590.4A CN113731609B (en) | 2021-09-22 | 2021-09-22 | Preparation device for preparing high-activity iron-based energetic composite material |
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| CN113731609A (en) | 2021-12-03 |
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