CN116652195B - Metal powder grinding device - Google Patents
Metal powder grinding device Download PDFInfo
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- CN116652195B CN116652195B CN202310897708.0A CN202310897708A CN116652195B CN 116652195 B CN116652195 B CN 116652195B CN 202310897708 A CN202310897708 A CN 202310897708A CN 116652195 B CN116652195 B CN 116652195B
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- 238000000227 grinding Methods 0.000 title claims abstract description 489
- 239000000843 powder Substances 0.000 title claims abstract description 44
- 239000002184 metal Substances 0.000 title claims abstract description 41
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 53
- 239000002923 metal particle Substances 0.000 claims abstract description 19
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 238000010862 gear shaping Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000007790 scraping Methods 0.000 claims description 2
- 230000005012 migration Effects 0.000 abstract description 3
- 238000013508 migration Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000008187 granular material Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010992 reflux Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 238000007780 powder milling Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 241000251131 Sphyrna Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000004033 diameter control Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
Abstract
The invention discloses a metal powder grinding device, which belongs to the technical field of grinding, and comprises a lower grinding component and an upper grinding component which are rotatably mounted and fixedly mounted, wherein a grinding gap is formed between the upper grinding component and the lower grinding component, the upper grinding component comprises three outer grinding disks, a middle grinding disk and an inner grinding disk which can be relatively slidably regulated in the axial direction, the gaps from the outer grinding disks, the middle grinding disks and the inner grinding disks to the lower grinding component are increased by regulating the gaps from the outer grinding disks, the middle grinding disks and the inner grinding disks to form grinding gaps with different heights which are communicated in a ring-shaped nested manner, metal particles pass through the gradient grinding, the grinding migration path of the metal particles can be effectively restrained, the particles can enter the next grinding gap after the particles are ground to a certain particle size by setting the corresponding grinding gaps, the grinding uniformity is ensured, and the particle size of the overflowed grinding particles can be directly restrained by controlling the grinding gap between the outer grinding disks and the lower grinding component, so that the purpose of controlling the metal grinding particle size is realized.
Description
Technical Field
The invention relates to the technical field of grinding, in particular to a metal powder grinding device.
Background
Metal powder coatings are a type of coating that is widely used for surface coating. It consists of fine metal particles, usually mixed with a resin binder and additives. The metallic powder coating may provide a variety of different appearance effects and functional characteristics, such as metallic feel, corrosion resistance, abrasion resistance, and the like. The particle size of the metal powder pigments generally used is generally between a few microns and tens of microns, and their preparation is mainly obtained by pulverizing, grinding or other processing methods of the metal materials into fine particles. Different metal powder pigments may vary in size, for example, aluminum powder is typically around 5-30 microns, copper powder particle size is typically around 10-60 microns, and the selection of the appropriate particle size may affect the properties and application of the metal powder pigment. Finer particle sizes may provide better coverage and gloss, but may have an impact on the conductivity and corrosion resistance of the coating. Larger particle sizes may make the color more visible, but in some applications more layer thickness may be required to achieve the desired effect, whereby the particle size of the metal powder is particularly important for the overall performance of the coating in the powder coating field.
The grinding disc is used for grinding metal powder, has the advantages of high efficiency, high speed, good uniformity, controllable granularity and the like, and is widely applied, however, the following problems are commonly existed in the existing grinding disc type metal powder preparation: on the one hand, the method for controlling the grinding particle size mainly comprises the steps of increasing the grinding time, such as a metal powder grinding processing device proposed by CN202310092860.1, comprising a grinding seat, wherein a grinding plate is movably sleeved on the top surface of the grinding seat, annular grooves and suction holes are respectively formed in the outer surface and the inner surface of the grinding seat, the annular grooves are communicated with the suction holes, metal powder in the grinding seat is sucked through the annular grooves and the suction holes on the outer surface of the grinding seat and is collected in a collecting box, the screening mode is that the height of a grinding gap is uniform, once large particles are sucked and easily block the suction holes in comparison, meanwhile, when the large particles are fed, the grinding plate is lifted to be separated from the grinding seat, then the large particles are put into the large particles, and the large particles of the metal particles can move outwards under the action of centrifugal force and block the suction holes in the grinding process, so that the grinding transportation path is uncontrollable, and the grinding homogenization efficiency is low; another disclosure of a low temperature brittle metal powder grinding apparatus is presented in CN202211112691.5, comprising: a case; the box cover is arranged at the top of the box body; the grinding mechanism is arranged on the inner side of the box cover; two grinding parts are arranged in the box body and symmetrically arranged on opposite sides of the grinding mechanism, a grinding groove is formed in the top of each grinding part, a plurality of hammerheads grind metal powder in the grinding groove along with the movement of the driving mechanism, and when the grinding particle size is required to be controlled, the grinding time can be controlled only by controlling the action time of the driving mechanism, and the grinding mode also has the problems that the grinding particle size is unevenly controlled and the grinding quality is affected.
Disclosure of Invention
The invention aims at: in order to solve the problems that when the traditional grinding disc grinds metal powder, the grinding grain diameter control can only be realized by increasing the grinding time, so that the time-consuming grinding efficiency is low, and when grinding different kinds of metal crushed aggregates, once the grinding time is inaccurate, the uneven grain diameter of the ground powder is easy to occur and the grinding quality is influenced, the metal powder grinding device is provided.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the metal powder grinding device comprises a grinding shell, wherein a grinding assembly is arranged in the grinding shell, the grinding assembly comprises a lower grinding assembly which is rotationally arranged at the inner bottom of the grinding shell and an upper grinding assembly which is fixedly arranged at the inner top of the grinding shell, and a grinding gap is formed between the lower grinding assembly and the upper grinding assembly; the upper grinding assembly comprises an outer grinding disc, a middle grinding disc, an inner grinding disc and a cover body which are nested from outside to inside, the inner grinding disc is fixedly arranged on the grinding shell body through a positioning cylinder, the cover body is buckled on the top of the outer grinding disc, the positioning cylinder penetrates through the cover body, the outer grinding disc, the middle grinding disc and the inner grinding disc can slide along the axial direction, and the inner grinding disc and the outer grinding disc are locked in a sliding way through a locking assembly arranged on the inner grinding disc and the positioning cylinder; the bottom of the outer grinding disc and the bottom of the middle grinding disc are also provided with fine grinding assemblies, the lower grinding assemblies comprise two fine grinding grooves matched with the fine grinding assemblies, the fine grinding grooves are annular, and powder particles which move outwards from the middle part of the grinding gap are accommodated in the fine grinding grooves and are pushed out radially outwards after being ground by the fine grinding assemblies.
Compared with the traditional grinding gap fixedly arranged between the grinding plates, the grinding device provided by the invention comprises the lower grinding component and the upper grinding component which are rotatably arranged, wherein the grinding gap is formed between the upper grinding component and the lower grinding component, meanwhile, the upper grinding component comprises the three outer grinding plates, the middle grinding plates and the inner grinding plates which can be relatively slidably adjusted in the axial direction, the outer grinding plates are provided with the cover bodies, the gaps between the outer grinding plates, the middle grinding plates and the inner grinding plates to the lower grinding component are increased through adjustment, the annular grinding gaps with different heights are formed, the inner grinding plates are fixedly arranged on the grinding shell through the positioning cylinder, metal particles enter through the positioning cylinder and pass through the inner grinding plates, the middle grinding plates and the outer grinding plates, and the metal particles are subjected to layer-by-layer gradient grinding, the centrifugal force in the grinding rotation process is the driving force of radial outside movement, on one hand, the grinding migration path of the metal particles can be effectively restrained, the particles can enter the next gap after being ground to a certain particle size through setting, the uniformity of grinding is ensured, on the other hand, the design can also meet the purpose that the particle size of directly controlling the particle size of the outer grinding plates is realized by directly controlling the particle size of the outer grinding plates, and the particle size of the abrasive particles can be directly thrown into the grinding gap;
in addition, in order to improve the grinding efficiency of the metal particles in the middle and outer layer grinding gap, and to regulate and restrict the migration path, through being equipped with two concentric annular fine grinding grooves on the lower grinding component, simultaneously the outer grinding disk and the bottom of the middle grinding disk are also equipped with fine grinding components, the fine grinding groove accommodates the powder particles which move outwards from the middle part of the grinding gap, the fine grinding components push out the particles radially outside after fine grinding the metal particles collected in the fine grinding grooves, the fine grinding components at the bottom of the middle grinding disk push the particles into the grinding gap between the outer grinding disk and the lower grinding component after fine grinding the particles, and the fine grinding components at the bottom of the outer grinding disk push the particles out after fine grinding the particles.
As a further description of the above technical solution:
the grinding device comprises a grinding shell, and is characterized in that a fixed seat is arranged at the inner bottom of the grinding shell, a plurality of supporting legs are arranged at the bottom of the fixed seat, a lower grinding assembly comprises a driving mechanism arranged at the bottom of the fixed seat and a lower grinding disc rotatably arranged on a first rotating groove at the top of the fixed seat, a collecting gap is formed between a section of the lower grinding disc protruding out of the first rotating groove and the grinding shell, a discharging hole is formed in the side wall of the grinding shell corresponding to the collecting gap, and meanwhile, the side wall of the lower grinding disc is connected with a scraping plate inserted into the gap.
As a further description of the above technical solution:
the top surface of the lower grinding disc is provided with two concentric fine grinding grooves, the radial outer side surface of each fine grinding groove is a slope surface extending from the bottom to the radial outer side, each fine grinding assembly is a plurality of arc-shaped grinding blocks, the plurality of grinding blocks are annularly distributed and fixed on one side, close to the inner edge, of the bottom of the outer grinding disc or the middle grinding disc, fine grinding gaps are formed between the grinding blocks and the fine grinding grooves, and the fine grinding gaps are reduced from the front end to the rear end in the relative rotation direction of the lower grinding disc.
As a further description of the above technical solution:
the outer grinding disc is characterized in that one side, close to the outer edge, of the bottom surface of the outer grinding disc is uniformly provided with a first grinding strip, one side, close to the outer edge, of the bottom surface of the middle grinding disc is uniformly provided with a second grinding strip, and the bottom surface of the inner grinding disc is uniformly provided with a third grinding strip.
As a further description of the above technical solution:
the inner side of the cover body is provided with a plurality of arc-shaped hook plates, the plurality of hook plates are annularly distributed, the radial inner side faces of the plurality of hook plates are flush with the radial inner side face of the middle grinding disc, the radial inner side face of the hook plates is provided with a locking groove II, the radial inner side face of the middle grinding disc is provided with a locking groove I, and the locking assembly is inserted into the corresponding locking groove I and locks the axial sliding of the middle grinding disc, and the locking assembly is simultaneously inserted into the corresponding locking groove II and locks the axial sliding of the cover body.
As a further description of the above technical solution:
the locking assembly comprises a driving assembly and a plurality of elastic mortise lock assemblies, the driving assembly comprises a rotating cylinder which is inserted in a positioning cylinder in a rotating mode, the top end of the rotating cylinder is connected with a flanging sleeve cylinder, the sleeve cylinder is sleeved at the top end of the positioning cylinder, the sleeve cylinder and the positioning cylinder are locked in a rotating mode through a locking bolt, a prying rotating jack is arranged on the sleeve cylinder, and the bottom end of the rotating cylinder is connected with a driving disc which synchronously pushes the elastic mortise lock assemblies to stretch out of the radial direction.
As a further description of the above technical solution:
the radial inner side of the inner grinding disc is provided with a second rotating groove in an indent manner, the outer edge of the driving disc is rotationally arranged in the second rotating groove, the inner grinding disc is also provided with a plurality of locking piece grooves, the inner sides of the locking piece grooves are communicated with the second rotating groove, the radial outer side of the driving disc is provided with a plurality of abutting grooves, the inner bottoms of the abutting grooves extend towards the outer side wall of the driving disc, and the abutting grooves correspond to elastic mortise lock assemblies arranged in the locking piece grooves.
As a further description of the above technical solution:
the elastic mortise lock assembly comprises a telescopic rod, one end, facing the butt groove, of the telescopic rod is a spherical end, a second baffle ring is arranged close to the spherical end, a spring is sleeved on the telescopic rod, the outer side end of the telescopic rod is connected with a plug, a gear shaping is arranged on the outer side of the plug, and the upper section and the lower section of the outer side of the plug can be inserted into the second locking groove and the first locking groove.
As a further description of the above technical solution:
the grinding blocks are provided with hollow cavities, a plurality of grinding blocks between the first grinding block and the second grinding block along the relative rotation direction are connected through connecting pipes, a partition plate is further arranged at the bottom of the cover body, a medium backflow space I for cooling an external grinding disc is formed between the partition plate and the outer side wall of the cover body, a medium backflow space II is formed between the inner side of the partition plate and the middle grinding disc, the inner grinding disc, the positioning cylinder and the cover body, a first air dispersing opening and a second air dispersing opening are further respectively arranged on the outer grinding disc and the middle grinding disc, the hollow cavities of the two grinding blocks positioned at the tail are respectively connected with the first air dispersing opening and the second air dispersing opening, the first air dispersing opening is communicated with the medium backflow space I, the second air dispersing opening is communicated with the medium backflow space II, the two grinding blocks positioned at the head are connected with an air supply hose, and the cover body is further connected with an air outlet hose respectively communicated with the medium backflow space I and the medium backflow space II.
As a further description of the above technical solution:
the top end of the positioning cylinder penetrates through the cover plate at the top of the grinding shell, the positioning cylinder is further provided with a first baffle ring, and the first baffle ring is located below the cover plate.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
the upper grinding assembly comprises three outer grinding plates, a middle grinding plate and an inner grinding plate which can be axially and relatively adjusted in a sliding manner, grinding gaps between the upper grinding plates and the lower grinding assembly can be adjusted to form annular nested grinding gaps with different heights, and metal particles moving radially outwards are subjected to layer-by-layer limit gradient grinding;
in addition, through the radial metal granule that moves of fine grinding groove holding, the rethread fine grinding subassembly carries out fine grinding to fine grinding groove holding powder granule, and radial outside is released the granule after the fine grinding, and this kind of design can accelerate metal granule grinding efficiency.
Drawings
FIG. 1 illustrates a perspective view of a metal powder milling apparatus provided in accordance with an embodiment of the present invention;
FIG. 2 illustrates a semi-cutaway perspective view of a metal powder milling apparatus milling housing provided in accordance with an embodiment of the present invention;
FIG. 3 is a perspective view showing the separation of a grinding housing, a lower grinding assembly and an upper grinding assembly of a metal powder grinding device according to an embodiment of the present invention;
FIG. 4 is a perspective view showing a metal powder grinding device according to an embodiment of the present invention, wherein the metal powder grinding device comprises a grinding housing, a lower grinding assembly, and an upper grinding assembly;
FIG. 5 illustrates a perspective view of an upper abrasive assembly separated from a lower abrasive disk according to an embodiment of the present invention;
FIG. 6 illustrates a second perspective view of an upper abrasive assembly separated from a lower abrasive disk according to an embodiment of the present invention;
FIG. 7 illustrates a semi-cutaway perspective view of a housing included in an upper abrasive assembly provided according to an embodiment of the present invention;
fig. 8 is a perspective view showing the separation and installation of a cover body, an outer grinding disc, a middle grinding disc, an inner grinding disc and a positioning cylinder according to an embodiment of the invention;
fig. 9 shows a second perspective view of a cover body, an outer grinding disc, a middle grinding disc, an inner grinding disc and a positioning cylinder which are separately installed according to the embodiment of the invention;
FIG. 10 is a perspective view showing the fitting installation of fine grinding grooves on a grinding block, a connecting pipe and a lower grinding disc body according to an embodiment of the present invention;
FIG. 11 illustrates a front view of an abrasive segment extending into a fine grind groove provided in accordance with an embodiment of the present invention;
FIG. 12 illustrates a perspective view of an abrasive brick extending into a fine grinding groove provided in accordance with an embodiment of the invention;
FIG. 13 is a perspective view showing the separation and installation of an outer grinding disc, a middle grinding disc, an inner grinding disc and a positioning cylinder according to an embodiment of the present invention;
FIG. 14 illustrates a semi-sectional mounting perspective view of an inner abrasive disk, a positioning cylinder, and a locking assembly provided in accordance with an embodiment of the present invention;
fig. 15 illustrates a perspective view of an inner abrasive disk, a positioning cylinder, and a lock assembly in a split view, provided in accordance with an embodiment of the present invention.
Legend description:
10. grinding the shell; 11. a support leg; 12. a fixing seat; 121. rotating the first groove; 13. a discharge port; 14. a cover plate;
20. a lower grinding assembly; 21. a driving mechanism; 22. a lower grinding disc; 221. a scraper; 222. fine grinding grooves;
30. an upper grinding assembly; 31. an outer abrasive disk; 311. an air dispersing port I; 312. grinding strip I; 32. a middle grinding disc; 321. a second air dispersing port; 322. grinding strips II; 323. a first locking groove; 33. an inner grinding disc; 331. a second rotating groove; 332. a locking piece groove; 333. grinding strips III; 34. a positioning cylinder; 341. a first baffle ring; 35. a cover body; 351. a partition plate; 352. a hook plate; 353. a second locking groove;
40. a fine grinding assembly; 41. grinding the blocks; 42. a connecting pipe; 43. a gas supply hose; 44. an air outlet hose;
50. a locking assembly; 51. a rotating cylinder; 52. a sleeve; 521. a jack; 522. a locking bolt; 53. a drive plate; 531. an abutment groove; 54. a telescopic rod; 541. a second baffle ring; 55. a spring; 56. a plug; 561. and (5) gear shaping.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The metal powder grinding device is used for solving the problems, and simultaneously, an adaptive temperature control structure is synchronously designed to improve the grinding uniformity and high efficiency of the metal powder.
As shown in fig. 1-9 and 13-15, the metal powder grinding device comprises a grinding shell 10, wherein the grinding shell 10 is mainly made of stainless steel, is barrel-shaped, a cover plate 14 is covered on the top, a plurality of supporting legs 11 are arranged at the bottom, the grinding shell 10 is overhead through the plurality of supporting legs 11, a lower grinding component is installed on a fixed seat 12 at the bottom in the grinding shell 10 through a rotating groove one 121, specifically, a lower grinding disc 22 included in the lower grinding component 20 is rotationally arranged on the rotating groove one 121, and meanwhile, a driving mechanism 21 included in the lower grinding component 20, namely a driving motor, is installed below the grinding shell 10, and the output end of the driving mechanism penetrates through the fixed seat 12 through a coupling and is connected with the lower grinding disc 22:
the upper grinding assembly 30 comprises an outer grinding disc 31, a middle grinding disc 32, an inner grinding disc 33, a positioning cylinder 34 and a cover body 35, wherein the outer grinding disc 31, the middle grinding disc 32 and the inner grinding disc 33 are coaxially nested, the two grinding discs can be axially slidably adjusted, the top of the inner grinding disc 33 is fixedly connected with the positioning cylinder 34, the top end of the positioning cylinder 34 penetrates through the cover plate 14 and is fixedly installed with the cover plate 14, the cover body 35 is fixedly installed at the top of the outer grinding disc 31, the positioning cylinder 34 slides through the cover body 35, thereby forming grinding gaps between the outer grinding disc 31, the middle grinding disc 32, the inner grinding disc 33 and the lower grinding disc 22, the inner grinding disc 33 and the positioning cylinder 34 are also provided with a locking assembly 50 which locks the inner grinding disc 33 and the middle grinding disc 32, the inner grinding disc 33 and the cover body 35 in a relative sliding manner, namely the inner grinding disc 33 and the outer grinding disc 31 in a relative sliding manner, by adjusting the relative installation heights of the outer grinding disc 31, the middle grinding disc 32 and the inner grinding disc 33 can enter the grinding disc 32 in a radial direction, the metal particles can enter the grinding gap between the outer grinding disc 32 and the grinding disc 22 through a certain gradient, the metal particles can enter the grinding gap between the grinding discs, the grinding gap can be ensured by moving through the inner grinding disc 32 and the gradient, and the metal particles can enter the grinding gap between the grinding disc 32, and the grinding gap can be reduced by the grinding gap between the grinding particles, and the grinding gap can be ensured by the gradient between the grinding gap and the grinding disc and the inner grinding disc and the grinding particle gap by the metal particle size by the grinding gap, on the other hand, the design can also meet the requirement of directly throwing and grinding the particle raw materials with different types and particle sizes, and the particle sizes of overflowed grinding particles can be directly restrained by controlling the grinding gap between the outer grinding disc and the lower grinding assembly, namely, the purpose of controlling the metal grinding particle sizes is realized, the homogenization degree of discharged particles is higher, and the particle sizes exceed the limit ratio to be extremely small;
the positioning cylinder 34 is further provided with a first baffle ring 341 for limiting the upward movement of the positioning cylinder 34, so that the change of the grinding gap caused by the upward movement of the axial force in the grinding process is avoided, and the grinding stability is ensured.
As shown in fig. 6-12, the bottom surfaces of the outer grinding disc 31 and the middle grinding disc 32 are close to the inner edge and are provided with a fine grinding component 40, the bottom surfaces of the outer grinding disc 31 and the middle grinding disc 32 outside the fine grinding component 40 are respectively and uniformly provided with a first grinding strip 312 and a second grinding strip 322, the bottom surface of the inner grinding disc 33 is uniformly provided with a plurality of third grinding strips 333, the top surface of the lower grinding disc 22 corresponding to the fine grinding component 40 is provided with two concentric fine grinding grooves 222, the radial outer side surface of the fine grinding grooves 222 is an annular curved surface extending from the bottom to the top surface of the lower grinding disc 22 in a bending way, the fine grinding component 40 comprises a plurality of arc-shaped grinding blocks 41, the plurality of grinding blocks 41 are distributed in an annular shape, when the fine grinding blocks 41 are installed in an adapting way, grinding gaps are formed between the bottoms of the plurality of grinding blocks 41 and the fine grinding grooves 222, and when the lower grinding disc 22 rotates relative to the outer grinding disc 31, the middle grinding disc 32 and the inner grinding disc 33, the metal particles in the fine grinding grooves 222 are pushed out radially outwards after the fine grinding grooves 222, namely, the annular curved surfaces are arranged so that the metal particles are convenient to move outwards after the fine grinding grooves 222 are pushed outwards, and the fine grinding particles are prevented from being carried out irregularly, and the fine grinding particles are prevented from being moved outwards, or being distributed outwards, and the fine grinding particles are prevented from being moved outwards and being uniformly;
the gap between the grinding block 41 and the fine grinding groove 222 increases from the front end to the rear end in the relative rotation direction, so that the metal powder particles in the fine grinding groove 222 can be conveniently ground into the grinding gap, and the fine grinding efficiency is improved.
As shown in fig. 7-10, in order to reduce the influence of grinding heat on the grinding structure and the powder quality, the grinding block 41 is of a hollow structure, the grinding blocks 41 of each circle are divided into a first grinding block 41 and a second grinding block 41 along the rotation direction, the grinding blocks 41 between the first grinding block 41 and the second grinding block 41 are connected through a connecting pipe 42, a first air outlet 311 and a second air outlet 321 are respectively arranged at the positions of the outer grinding block 31 and the middle grinding block 32 corresponding to the second grinding block 41, an air supply hose 43 is inserted into the cover body 35 and the outer grinding block 31 or the middle grinding block 32, so that the air supply hose 43 is respectively communicated with the plurality of grinding blocks 41 of each circle, a separation plate 351 is arranged at the bottom of the cover body 35, the separation plate 351 and the outer side wall of the cover body, and the top of the outer grinding block 31 form a medium reflux space I, the separation plate 351 and the inner top wall of the cover body, the middle grinding block 32 and the inner grinding block 33 and a medium reflux space II between the positioning cylinder 34, and the low-temperature air flow passes through the first grinding block 41, the plurality of connecting pipes 42 and the second air outlet 321 and the second air outlet 33, and the medium reflux space 44 are respectively connected with the first air outlet 33 and the second air outlet 33 or the second air outlet 33 through the first air outlet 33 and the air outlet hole 33, respectively, so that the air supply hose 43 is fully communicated with the air return space and the air return space 44 and the medium reflux space;
the heat-conducting air flows of the outer grinding disc 31, the middle grinding disc 32 and the bottom fine grinding assembly 40 can be separately monitored, so that the relationship among the grinding heat generation, the grinding time and the grinding discharge particle size of different grinding gap settings can be conveniently studied.
7-9 and 13-15, the locking assembly 50 comprises a driving assembly and a plurality of elastic mortise lock assemblies, the driving assembly comprises a rotating cylinder 51 which is rotatably inserted in the positioning cylinder 34, the top end of the rotating cylinder 51 is connected with a flanging sleeve cylinder 52, during feeding, metal particles are fed through the top end of the rotating cylinder 51 and fall into the bottom of the inner grinding disc 33, the particles are ground along with the rotation of the lower grinding disc 22, the sleeve cylinder 52 is sleeved at the top end of the positioning cylinder 34, the sleeve cylinder 52 and the positioning cylinder 34 are rotationally locked through a locking bolt 522, meanwhile, a prying rotary jack 521 is arranged on the sleeve cylinder 52, and when unlocking or locking is required to be controlled, the sleeve cylinder 51 is firstly broken through inserting a prying bar or a rod into the jack 521 to rotate;
the bottom of the cover body 35 is provided with a plurality of arc-shaped hook plates 352, the plurality of hook plates 352 are annularly distributed, the inner side surfaces of the plurality of annularly distributed hook plates 352 are flush with the radial inner side surface of the middle grinding disc 32, the hook plates 352 are provided with locking grooves II 353, the radial inner side surface of the middle grinding disc 32 is provided with a plurality of locking grooves I323, and the locking grooves I323 and the locking grooves II 353 are in one-to-one correspondence;
the bottom end of the rotating cylinder 51 is connected with a driving disk 53 which synchronously pushes a plurality of elastic mortise lock components to extend radially outwards, a rotating groove II 331 is concavely arranged on the radially inner side surface of the inner grinding disk 33, the outer edge of the driving disk 53 is rotationally arranged in the rotating groove II 331, a plurality of lock piece grooves 332 are also arranged on the inner grinding disk 33, the inner sides of the plurality of lock piece grooves 332 are communicated with the rotating groove II 331, a plurality of abutting grooves 531 are arranged on the radially outer side surface of the driving disk 53, the inner bottoms of the abutting grooves 531 extend towards the outer side wall of the driving disk 53, the abutting grooves 531 correspond to the elastic mortise lock components arranged in the lock piece grooves 332, the elastic mortise lock components comprise telescopic rods 54, one ends of the telescopic rods 54, facing the abutting grooves 531, are spherical ends, which are close to the spherical ends, baffle rings II 541 are arranged, and springs 55 are sleeved on the telescopic rods 54, the outer side end of the telescopic rod 54 is connected with a plug 56, a gear shaping 561 is arranged on the outer side of the plug 56, upper and lower sections on the outer side of the plug 56 can be inserted into the second locking groove 353 and the first locking groove 323, the driving disc 53 is driven to rotate by controlling the rotation of the rotating cylinder 51, the spherical ends of the telescopic rod 54 are extruded by a plurality of abutting grooves 531 on the driving disc 53, the telescopic rod 54 is extruded by a second retaining ring 541 to move radially outwards through a spring 55, the plug 56 is inserted into the corresponding second locking groove 353 and the corresponding first locking groove 323, the gear shaping 561 at the end part of the plug is condensed with the gear shaping in the second locking groove 353 and the first locking groove 323, and therefore the axial relative movement of the inner grinding disc 33, the cover body 35 and the middle grinding disc 32 is realized, and one-key locking is realized, so that adjustment and control are facilitated.
As shown in fig. 2, a collecting gap is formed between the outer side wall of the lower grinding disc 22 protruding from the rotating groove one 121 and the inner side wall of the grinding shell 10, a discharge hole 13 is formed on the side wall of the grinding shell 10 corresponding to the collecting gap, the side wall of the lower grinding disc 22 is connected with a scraper 221 inserted into the gap, powder particles pushed out by the grinding gap fall into the collecting gap, the collected powder particles are scraped by the scraper 221 in the rotating process of the lower grinding disc 22, and finally discharged through the discharge hole 13.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The metal powder grinding device comprises a grinding shell (10), wherein a grinding component is arranged in the grinding shell (10), and is characterized in that the grinding component comprises a lower grinding component (20) which is rotatably arranged at the inner bottom of the grinding shell (10) and an upper grinding component (30) which is fixedly arranged at the inner top of the grinding shell (10), and a grinding gap is formed between the lower grinding component (20) and the upper grinding component (30);
the upper grinding assembly (30) comprises an outer grinding disc (31), a middle grinding disc (32), an inner grinding disc (33) and a cover body (35) which are nested from outside to inside, grinding gaps among the outer grinding disc (31), the middle grinding disc (32) and the inner grinding disc (33) and the lower grinding assembly can be adjusted respectively to form annular nested grinding gaps with different heights, metal particles moving radially outwards are subjected to layer-by-layer limit gradient grinding, the corresponding grinding gaps are set, the metal particles enter the next grinding gap after being ground to a certain particle size, the inner grinding disc (33) is fixedly arranged on a grinding shell (10) through a positioning cylinder (34), the cover body (35) is buckled on the top of the outer grinding disc (31), the positioning cylinder (34) penetrates through the cover body (35), and the outer grinding disc (31), the middle grinding disc (32) and the inner grinding disc (33) can slide axially and are locked in a sliding mode through a locking assembly (50) arranged on the inner grinding disc (33) and the positioning cylinder (34);
the bottoms of the outer grinding disc (31) and the middle grinding disc (32) are also provided with a fine grinding assembly (40), the lower grinding assembly (20) comprises two fine grinding grooves (222) matched with the fine grinding assembly (40), the fine grinding grooves (222) are annular, and the fine grinding grooves (222) contain powder particles which move outwards from the middle part of a grinding gap and are pushed out radially outwards after being ground by the fine grinding assembly (40);
the grinding device is characterized in that one side, close to the outer edge, of the bottom surface of the outer grinding disc (31) is uniformly provided with a first grinding strip (312), one side, close to the outer edge, of the bottom surface of the middle grinding disc (32) is uniformly provided with a second grinding strip (322), and the bottom surface of the inner grinding disc (33) is uniformly provided with a third grinding strip (333).
2. The metal powder grinding device according to claim 1, wherein a fixed seat (12) is arranged at the inner bottom of the grinding shell (10), a plurality of supporting legs (11) are arranged at the bottom of the fixed seat (12), the lower grinding component (20) comprises a driving mechanism (21) arranged at the bottom of the fixed seat (12) and a lower grinding disc (22) rotatably arranged on a first rotating groove (121) at the top of the fixed seat (12), a collecting gap is formed between a section of the first rotating groove (121) protruding out of the lower grinding disc (22) and the grinding shell (10), a discharging hole (13) is formed in the side wall of the grinding shell (10) corresponding to the collecting gap, and meanwhile, the side wall of the lower grinding disc (22) is connected with a scraping plate (221) inserted into the gap.
3. The metal powder grinding device according to claim 2, wherein the top surface of the lower grinding disc (22) is provided with two concentric fine grinding grooves (222), the radially outer side surface of each fine grinding groove (222) is a slope extending radially outwards from the bottom, the fine grinding assembly (40) is a plurality of arc-shaped grinding blocks (41), the plurality of grinding blocks (41) are annularly distributed and fixed on one side, close to the inner edge, of the bottom of the outer grinding disc (31) or the middle grinding disc (32), fine grinding gaps are formed between the grinding blocks (41) and the fine grinding grooves (222), and the fine grinding gaps are reduced along the front end to the rear end relative to the lower grinding disc (22) in the rotating direction.
4. A metal powder grinding device according to claim 3, wherein a plurality of arc-shaped hook plates (352) are arranged on the inner side of the cover body (35), the plurality of hook plates (352) are annularly distributed, the radial inner side faces of the plurality of hook plates (352) are flush with the radial inner side faces of the middle grinding disc (32), locking grooves two (353) are formed on the radial inner side faces of the hook plates (352), locking grooves one (323) are formed on the radial inner side faces of the middle grinding disc (32), the locking components (50) are inserted into the corresponding locking grooves one (323) and lock the axial sliding of the middle grinding disc (32), and the locking components (50) are simultaneously inserted into the corresponding locking grooves two (353) and lock the axial sliding of the cover body (35).
5. The metal powder grinding device according to claim 4, wherein the locking assembly (50) comprises a driving assembly and a plurality of elastic mortise lock assemblies, the driving assembly comprises a rotating cylinder (51) rotatably inserted in the positioning cylinder (34), a flanging sleeve (52) is connected to the top end of the rotating cylinder (51), the sleeve (52) is sleeved on the top end of the positioning cylinder (34), the sleeve (52) and the positioning cylinder (34) are rotationally locked through a locking bolt (522), a jack (521) for prying rotation is arranged on the sleeve (52), and a driving disc (53) for synchronously pushing the elastic mortise lock assemblies to extend radially outwards is connected to the bottom end of the rotating cylinder (51).
6. The metal powder grinding device according to claim 5, wherein the inner grinding disc (33) is provided with a second rotating groove (331) in a recessed manner on a radial inner side surface, the outer edge of the driving disc (53) is rotatably arranged in the second rotating groove (331), the inner grinding disc (33) is further provided with a plurality of locking piece grooves (332), the inner sides of the plurality of locking piece grooves (332) are communicated with the second rotating groove (331), the radial outer side surface of the driving disc (53) is provided with a plurality of abutting grooves (531), the inner bottom of the abutting grooves (531) extends towards the outer side wall of the driving disc (53), and the abutting grooves (531) correspond to elastic mortise lock assemblies arranged in the locking piece grooves (332).
7. The metal powder grinding device according to claim 6, wherein the elastic mortise lock assembly comprises a telescopic rod (54), one end of the telescopic rod (54) facing the abutting groove (531) is a spherical end, a second baffle ring (541) is arranged close to the spherical end, a spring (55) is sleeved on the telescopic rod (54), a plug (56) is connected to the outer side end of the telescopic rod (54), a gear shaping (561) is arranged on the outer side of the plug (56), and upper and lower sections on the outer side of the plug (56) can be inserted into the second lock groove (353) and the first lock groove (323).
8. The metal powder grinding device according to claim 7, wherein the grinding block (41) has a hollow cavity, a plurality of grinding blocks (41) between the first grinding block (41) and the second grinding block (41) along the relative rotation direction are connected through a connecting pipe (42), a separation plate (351) is further arranged at the bottom of the cover (35), a medium backflow space I for cooling the outer grinding disc (31) is formed between the separation plate (351) and the outer side wall of the cover (35), a medium backflow space II is formed between the inner side of the separation plate (351) and the middle grinding disc (32), the inner grinding disc (33), the positioning cylinder (34) and the cover (35), an air outlet opening I (311) and an air outlet opening II (321) are respectively arranged on the outer grinding disc (31) and the middle grinding disc (32), the hollow cavities of the two grinding blocks (41) at the tail are respectively connected with the air outlet opening I (311) and the air outlet opening II (321), the air outlet opening I (311) is communicated with the medium backflow space I, the air outlet opening II (321) is communicated with the medium backflow space II, and the medium backflow space II is respectively connected with the two air outlet hoses (43) at the head parts of the two grinding blocks (41).
9. The metal powder grinding device according to claim 8, wherein the top end of the positioning cylinder (34) penetrates through the cover plate (14) at the top of the grinding shell (10), the positioning cylinder (34) is further provided with a first baffle ring (341), and the first baffle ring (341) is located below the cover plate (14).
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| CN202310897708.0A CN116652195B (en) | 2023-07-21 | 2023-07-21 | Metal powder grinding device |
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| CN202310897708.0A CN116652195B (en) | 2023-07-21 | 2023-07-21 | Metal powder grinding device |
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| CN116652195B true CN116652195B (en) | 2023-12-05 |
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