CN117123118B - Metal powder metallurgy mixing arrangement - Google Patents
Metal powder metallurgy mixing arrangement Download PDFInfo
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- CN117123118B CN117123118B CN202311401179.7A CN202311401179A CN117123118B CN 117123118 B CN117123118 B CN 117123118B CN 202311401179 A CN202311401179 A CN 202311401179A CN 117123118 B CN117123118 B CN 117123118B
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- 238000002156 mixing Methods 0.000 title claims abstract description 150
- 239000002184 metal Substances 0.000 title claims abstract description 52
- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 117
- 239000000843 powder Substances 0.000 claims abstract description 48
- 238000012216 screening Methods 0.000 claims abstract description 8
- 238000005188 flotation Methods 0.000 claims abstract 2
- 238000007599 discharging Methods 0.000 claims description 19
- 230000001360 synchronised effect Effects 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 7
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 24
- 230000000694 effects Effects 0.000 abstract description 17
- 238000003756 stirring Methods 0.000 description 11
- 239000002923 metal particle Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/82—Combinations of dissimilar mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/60—Mixing solids with solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71745—Feed mechanisms characterised by the means for feeding the components to the mixer using pneumatic pressure, overpressure, gas or air pressure in a closed receptacle or circuit system
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/45—Mixing in metallurgical processes of ferrous or non-ferrous materials
Abstract
The invention relates to the field of metal powder mixing, and discloses a metal powder metallurgy mixing device, which comprises a frame, wherein a primary mixing mechanism and a secondary mixing mechanism are arranged on the frame, the primary mixing mechanism is used for receiving a preset amount of raw material a and raw material b and uniformly flattening the raw material a and the raw material b, the raw material b is uniformly stacked on the raw material a, the raw material a and the raw material b are subjected to primary mixing in a vibration mode, the secondary mixing mechanism is used for carrying out air flotation screening and secondary mixing on the raw material subjected to primary mixing, and the secondary mixing mode is collision; in this scheme, can realize the blade formula mixing to metal powder, life is longer, and preliminary mixing process and secondary mixing in-process, every part metal powder all participate in the mixing in the middle of, so the mixing does not have the dead angle, and the mixing effect is better to the mixing in-process can also screen metal powder through the air supporting screening mode.
Description
Technical Field
The invention relates to the field of solid raw material mixing, in particular to the field of metal powder mixing.
Background
The powder metallurgy is a process technology for preparing metal powder, taking the powder as a raw material, and preparing a metal material or a product through mixing, compression molding, sintering and necessary subsequent treatment, wherein the mixing is a process in the process, and more than two kinds of metal powder are uniformly mixed together so as not to generate segregation.
In the prior art, it is common to stir and mix metal powder raw materials by driving a stirring blade to rotate, for example, the chinese invention of application publication No. CN108786521U discloses a high-efficiency powder metallurgy mixing device, the chinese invention patent of application publication No. CN111013470a discloses a metal powder mixing device, both patent documents realize mixing of metal powder by stirring, and improve the stirring effect by different blade layout modes, however, the mixing of the stirring mode still has some defects: 1. the stirring has dead angles, the metal powder is not uniformly mixed, segregation exists in the dead angles, the vertical layering phenomenon is easy to occur during stirring, the metal powder is difficult to uniformly mix, and in short, the uniformity of powder mixing in a stirring mode is poor; 2. the metal powder is also a metal material in nature, the stirring structure is easily severely worn by long-time high-speed rotation stirring of the blades, and the service life of machine equipment is relatively low.
Based on the above, the invention provides a metal powder metallurgy mixing device.
Disclosure of Invention
To solve the problems mentioned in the background above, the present invention provides a metal powder metallurgy mixing apparatus.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The utility model provides a metal powder metallurgy mixing arrangement, it includes the frame, install one-level mixing mechanism and second grade mixing mechanism in the frame, one-level mixing mechanism is used for receiving preset quantity raw material a and raw material b and evenly shakes it back, make raw material b evenly pile up on raw material a, make raw material a and raw material b realize preliminary mixing through the vibration mode, second grade mixing mechanism is used for carrying out air supporting screening and second grade mixing to the raw material after the preliminary mixing, the second grade mixing mode is the collision, be provided with the conveying mechanism who is used for drawing raw material transfer between the discharge end of one-level mixing mechanism and the feed end of second grade mixing mechanism.
Further, the primary mixing mechanism comprises a sliding seat which is arranged on the frame in a sliding way along the horizontal direction and a first driving piece which is used for driving the sliding seat to move;
the first-level mixing mechanism further comprises two groups of flattening components, one group of flattening components are arranged on the sliding seat, the other group of flattening components are arranged on the frame, and the flattening components arranged on the frame are positioned below the flattening components arranged on the sliding seat.
Further, the flattening component comprises a mounting bracket which is mounted on the rack or the sliding seat through the vibrating element, a conveying belt is mounted on the mounting bracket, the conveying direction of the conveying belt is parallel to the sliding direction of the sliding seat, two groups of side plates which are parallel to the conveying direction of the conveying belt are arranged on the mounting bracket and are respectively positioned at two sides of the conveying belt along the conveying direction, the side plates are in contact with the side surfaces of the conveying belt, the upper end surface of the side plates is higher than the conveying belt, and a material guide plate positioned below the discharge end of the conveying belt is obliquely arranged on the mounting bracket;
the flattening component further comprises a brake bar positioned above the conveying belt, the extending direction of the brake bar is parallel to the width direction of the conveying belt, two groups of brake bars are arranged along the conveying direction of the conveying belt, a wire rail parallel to the conveying direction of the conveying belt is arranged on the mounting support, the brake bar and the wire rail form sliding connection, and two ends of the brake bar are respectively contacted with the two groups of partition boards.
Further, a second driving piece and a connecting bracket positioned between the second driving piece and the wire rail are arranged on the mounting bracket, and the second driving piece is used for driving the connecting bracket to lift;
one side of two sets of baffles are opposite to each other is provided with a set of hold-in range respectively, and the direction of movement of hold-in range is parallel with the line rail, and the tip of brake lever extends there is the flange, is provided with the protruding round pin that is vertical arrangement on the flange, and protruding round pin inserts the jack that sets up on the hold-in range, and the junction of protruding round pin and hold-in range on two sets of brake levers is located the upper and lower both sides of hold-in range respectively.
Further, the secondary mixing mechanism comprises a mixing tank with a closed upper end and an open lower end and provided with a tank bottom, the tank bottom is conical in shape and the diameter of the tank bottom increases gradually from bottom to top, the upper end of the mixing tank is provided with a mounting hole, and a filter element is arranged in the mounting hole;
an upper bracket is arranged at the upper end of the mixing tank, an upper pipeline coaxial with the mixing tank is arranged on the upper bracket, a connecting pipeline is arranged on the outer circular surface of the upper pipeline along the radial direction, and the tail end of the connecting pipeline is communicated with the conveying mechanism;
the lower end of the upper pipeline is coaxially and rotatably provided with a lower pipeline, a lower pipe orifice of the lower pipeline extends into the mixing tank, and a first motor for driving the lower pipeline to rotate is arranged on the frame;
the lower pipe orifice of the lower pipe is coaxially provided with a mounting seat, the upper end of the mounting seat is sealed and provided with a connecting hole communicated with the lower pipe, the lower end of the mounting seat is opened and can be detachably provided with a conical sleeve, the conical sleeve is conical, the diameter of the conical sleeve increases gradually from bottom to top, the outer circular surface of the mounting seat is provided with a plurality of connectors in an array manner along the circumferential direction, and the outer hole of each connector is provided with a discharge pipe in an extending manner;
the secondary mixing mechanism also comprises an air pipeline coaxial with the lower pipeline, wherein the lower pipe orifice of the air pipeline is close to the conical sleeve, and the upper pipe orifice extends out of the upper pipeline and is connected with the air compressor.
Further, an air guide seat is coaxially arranged in the mounting seat through an inner bracket, the diameters of the air guide seat are gradually increased from bottom to top, then are equal, then are gradually decreased, an air hole is coaxially formed in the air guide seat, and the upper orifice of the air hole is connected with the lower orifice of the air pipe;
the lower orifice of the connecting hole extends downwards to form a bulge, the upper end and the lower end of the bulge are opened and are conical with the diameters decreasing from top to bottom, and the lower opening of the bulge is close to the outer surface of the air guide seat.
Further, the collision seat is coaxially arranged in the mixing tank through the support bracket, the collision seat is conical in shape, the diameter of the collision seat is gradually decreased from bottom to top, and the tail end of the discharging pipeline is vertical to the outer surface of the collision seat.
Further, an auxiliary member is arranged below the tank bottom, the auxiliary member comprises an outer shell body, the upper end of the outer shell body is sealed, a feeding hole is formed in the upper end of the outer shell body, the lower end of the outer shell body is open, a shell cover is arranged on the shell cover, a discharging hole is formed in the lower portion of the discharging hole, a storage device is placed below the discharging hole, a rotating body is rotatably arranged in the outer shell body, the rotating body axially penetrates through the storage hole, at least two groups of storage holes are formed in the storage hole in an array mode along the circumferential direction of the rotating body, and initially, the feeding hole and the discharging hole are respectively communicated with the corresponding storage holes, and the bottom of the tank bottom is open and communicated with the feeding hole;
the frame is provided with a motor III for driving the rotator to rotate.
Further, the inside of the collision seat is hollow and is coaxially provided with a second motor, and the output end of the second motor extends out and is in power connection with the blade arranged in the tank bottom.
Compared with the prior art, the invention has the beneficial effects that:
this scheme realizes evenly mixing and air supporting screening to the metal powder raw materials through the cooperation of one-level mixing mechanism and second grade mixing mechanism, and is specific:
1. in the primary mixing process: firstly, uniformly flattening various raw materials in a rectangular area by matching a conveying belt and a brake bar in a flattening component I, presenting a plane uniform distribution state with thinner thickness, and then sequencing according to the proportion of each raw material to stack the raw materials one by one, and matching vibration to realize preliminary uniform mixing;
for example: the ratio of the raw material a is larger than that of the raw material b, the raw material a is uniformly distributed on a thinner plane through the first flattening component, the current distribution state is kept, the raw material a is transferred to the second flattening component, the raw material b is uniformly distributed on a thinner plane through the first flattening component, the raw material b is uniformly scattered on the raw material a, and the second flattening component vibrates when the raw material b is scattered, so that the two raw materials are primarily uniformly mixed, and the primary mixing effect is better;
2. in the secondary mixing process: the raw materials after preliminary mixing are pulled by a conveying mechanism and fall into a mounting seat sequentially through a connecting pipeline, an upper pipeline and a lower pipeline, meanwhile, compressed air flows into a conical sleeve through an air pipeline and an air hole, then flows into a mixing tank through a connecting nozzle and a discharging pipeline and is discharged from a filtering element, metal powder with the particle size meeting the requirements flows into the mixing tank together by air flow in the flowing process of the compressed air, the particle size is larger, metal particles which do not meet the requirements cannot be driven by the air flow and remain in the conical sleeve, and the air floatation screening effect is achieved;
the metal powder flowing along with the air flow is discharged through the tail end of the discharging pipeline and can collide with the collision seat, and after being sputtered out, the metal powder collides with the metal powder at the back, so that the collision has a uniform mixing effect, and raw materials are secondarily mixed uniformly;
according to the scheme, 1 and 2 are combined, the metal powder can be uniformly mixed without blades, the service life is longer, and when the metal powder is uniformly mixed, no matter in a primary mixing process or a secondary mixing process, each part of metal powder participates in the mixing process, so that dead angles do not exist in the mixing process, the mixing effect is better, and in the mixing process, the metal powder can be screened through an air floatation screening mode.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a primary blending mechanism;
FIG. 3 is a schematic illustration of a flattening member;
FIG. 4 is a schematic diagram of a flattening member II;
FIG. 5 is a schematic diagram of a timing belt and brake lever;
FIG. 6 is a schematic diagram of a secondary blending mechanism and a conveying mechanism;
FIG. 7 is a cross-sectional view of a secondary blending mechanism;
FIG. 8 is a partial cross-sectional view of a secondary blending mechanism;
FIG. 9 is a partial cross-sectional view II of a secondary blending mechanism;
FIG. 10 is a cross-sectional view of the crash seat and the can bottom;
fig. 11 is an exploded view of the auxiliary member.
The reference numerals in the drawings are:
100. a frame; 200. a first-level mixing mechanism; 201. a slide; 202. a first driving member; 203. a feed hopper; 204. a flattening member; 205. a mounting bracket; 206. a conveyor belt; 207. a synchronous belt; 208. a brake lever; 209. a second driving piece; 210. a connecting bracket; 211. a vibrating element; 212. a material guide plate; 213. a wire rail; 300. a secondary mixing mechanism; 301. a mixing tank; 302. a tank bottom; 303. a filter element; 304. a first motor; 305. an upper bracket; 306. an upper pipeline; 307. a connecting pipe; 308. a lower pipeline; 309. a mounting base; 310. a nozzle; 311. a conical sleeve; 312. an air guide seat; 313. an air duct; 314. a discharge pipe; 315. a collision seat; 316. a support bracket; 317. a blade; 318. a second motor; 319. an outer shell; 320. a feed hole; 321. a cover; 322. a discharge hole; 323. a rotating body; 324. a storage hole; 325. a third motor; 400. a conveying mechanism; 401. a conveying hopper; 402. and (5) a packing auger.
Detailed Description
In order to further describe the technical means and effects adopted by the present invention for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present invention with reference to the accompanying drawings and preferred embodiments.
The metal powder mixing means that at least two metal powders are uniformly mixed, and in this scheme, for convenience of description, two metal powder raw materials are taken as an example and illustrated, and the two metal powder raw materials are respectively a raw material and a raw material b.
As shown in fig. 1 to 11, a metal powder metallurgy mixing device includes a frame 100, on which a primary mixing mechanism 200 and a secondary mixing mechanism 300 are mounted on the frame 100, wherein:
1. the primary mixing mechanism 200 is configured to receive and uniformly flatten a preset amount of raw material a and raw material b, and then uniformly stack the raw material b on the raw material a, and along with the vibration, perform primary mixing on the raw material a and the raw material b, specifically:
as shown in fig. 2, the primary mixing mechanism 200 includes a sliding seat 201 slidably mounted on the frame 100 along a horizontal direction and a first driving member 202 for driving the sliding seat 201 to move, where the first driving member 202 may be a telescopic rod technology or a screw rod linear motion technology, which is implemented in the prior art and will not be described in detail.
The primary mixing mechanism 200 further includes a leveling member 204, where the leveling member 204 is provided with two groups, one group is mounted on the slide 201, and the other group is mounted on the frame 100, and initially, a feeding end of the latter is located directly below a discharging end of the former, and in addition, a feeding hopper 203 is provided above the feeding end of the former.
As shown in fig. 3-5, the flattening member 204 includes a mounting bracket 205 mounted on the frame 100 or the slide 201 through a vibration element 211, the vibration element 211 is used for driving the mounting bracket 205 to vibrate, the vibration element 211 may be a vibrator, preferably a voice coil motor, the mounting bracket 205 is in a rectangular shape as a whole, and voice coil motors are arranged at four right angles, so that the flexible vibration technology can vibrate a complex geometric shape, and the vibration effect is better.
The conveyer belt 206 is installed on the installing support 205, and the direction of delivery of conveyer belt 206 is on a parallel with the slip direction of slide 201, is provided with the curb plate along the direction of delivery of conveyer belt 206 on the installing support 205, and the curb plate is provided with two sets of and is located conveyer belt 206 along the both sides of direction of delivery respectively to the curb plate contacts with the side of conveyer belt 206, and the up end height of curb plate is higher than conveyer belt 206, and the slope is provided with the stock guide that is located conveyer belt 206 discharge end below on the installing support 205.
The flattening member 204 further includes a gate bar 208 located above the conveyor belt 206, the extending direction of the gate bar 208 is parallel to the width direction of the conveyor belt 206, the gate bar 208 is provided with two groups along the conveying direction of the conveyor belt 206, the mounting bracket 205 is provided with a line rail 213 parallel to the conveying direction of the conveyor belt 206, and the gate bar 208 and the line rail 213 form a sliding connection.
The mounting bracket 205 is provided with a second driving piece 209 and a connecting bracket 210 positioned between the second driving piece 209 and a wire rail 213, wherein the second driving piece 209 is used for driving the connecting bracket 210 to lift and further driving the wire rail 213 and the gate rod 208 to lift so as to enable the bottom of the gate rod 208 to contact or separate from contact with the conveying belt 206, and two ends of the gate rod 208 are respectively contacted with two groups of partition plates, so that when the gate rod 208 is contacted with the conveying belt 206, a rectangular area is formed by the two groups of partition plates and the two groups of gate rods 208; the second driving member 209 is the same as the first driving member 202, and is implemented in the prior art, and will not be described in detail.
One side of each of the two groups of partition boards, which are opposite, is provided with a group of synchronous belts 207, the moving direction of the synchronous belts 207 is parallel to the wire rail 213, the end parts of the brake levers 208 extend to form convex frames, the convex frames are provided with convex pins which are vertically arranged, the convex pins are inserted into insertion holes formed in the synchronous belts 207, and in addition, the connection parts of the convex pins on the two groups of brake levers 208 and the synchronous belts 207 are respectively positioned at the upper side and the lower side of the synchronous belts 207, so that the synchronous belts 207 can be separated from each other or are close to each other by the convex pins when running.
The working process of the primary mixing mechanism 200 is specifically shown as follows:
for convenience of description, the flattening member 204 provided on the slider 201 is named as a flattening member one, the flattening member 204 provided on the frame 100 is named as a flattening member two, the ratio of the raw material a is larger than that of the raw material b, and the preset amount of raw material a and the preset amount of raw material b are uniformly mixed:
first, the distance between the two sets of bars 208 is adjusted to match according to the preset amount of the material a, and in addition, the bottom of the bars 208 is in contact with the conveyor belt 206,
then, the raw material a is thrown into the feed hopper 203 and continuously falls onto the conveying belt 206 of the first flattening component, meanwhile, the conveying belt 206 is started to enable the raw material a to be positioned on the conveying belt 206 in a straight line and in a rectangular area formed by two groups of partition boards and two groups of gate bars 208, meanwhile, the vibrating element 211 is started to vibrate the first flattening component, and the raw material a is uniformly distributed in the rectangular area and is distributed in a plane with thinner thickness;
then, the vibration element 211 is stopped, the second driving piece 209 drives the gate bar 208 to move upwards, and the bottom of the gate bar 208 is higher than the raw material a;
then, the conveyor belt 206 runs to pull the raw material a to fall onto the conveyor belt 206 of the second flattening component, meanwhile, the first driving piece 202 runs to drive the sliding seat 201 to move, and the two driving pieces cooperate with each other to enable the raw material a to fall onto the second flattening component completely, and the distribution of the raw material a on the second flattening component is identical to that on the first flattening component;
then, the gate bar 208 of the first flattening member is contacted with the conveying belt 206 again, and the process of putting the raw material a on the first flattening member is repeated, so that the raw material b is uniformly distributed in the rectangular area, and the planar distribution with thinner thickness is shown;
then, the conveyor belt 206 runs to pull the raw material b to drop onto the conveyor belt 206 of the second flattening component, meanwhile, the first driving piece 202 runs to drive the sliding seat 201 to move, and the two pieces are matched to enable the raw material b to drop onto the second flattening component, wherein the length of a rectangular area where the raw material b is located is smaller than that of a rectangular area where the raw material a is located because the ratio of the raw material b is smaller than that of the raw material a, so that the moving speed of the sliding seat 201 is higher, and the raw material b is uniformly scattered onto the raw material a;
at the same time, the vibration element 211 of the second flattening member operates to vibrate the second flattening member, so as to achieve preliminary mixing of the raw material a and the raw material b.
In the above process, the reason why the rectangular area needs to be adjusted according to the preset amount of the raw material is that: if the area of the rectangular area is too large and the amount of raw materials is too small, the raw materials cannot be uniformly distributed in the rectangular area, and as a result of final vibration, the raw materials in the edge area of the rectangular area are more and the raw materials in the central area are less; if the area of the rectangular area is too small and the amount of the raw materials is too large, the raw materials can be uniformly distributed in the rectangular area, but the thickness is thicker, so that the preliminary uniform mixing of the two subsequent raw materials is not facilitated.
In the process, as the two raw materials are firstly vibrated on the flattening component to be in a thinner plane uniform distribution state, then the raw material b is uniformly scattered on the raw material a, and meanwhile, the two raw materials are uniformly mixed in a vibration mode, so that the primary uniform mixing effect is better.
2. A conveying mechanism 400 is arranged between the primary mixing mechanism 200 and the secondary mixing mechanism 300 and is used for pulling the primarily mixed raw materials into the secondary mixing mechanism 300, and the following specific steps are that:
as shown in fig. 6, the conveying mechanism 400 includes a conveying hopper 401 located at a discharge end of the second flattening component, the bottom of the conveying hopper 401 is in a semi-cylindrical shape bent upwards, one end of the semi-cylindrical shape is connected with a feed end of the second blending mechanism 300, an auger 402 is further installed at the bottom of the conveying hopper 401, the auger 402 is driven to rotate by a motor technical means, and the auger 402 rotates to draw raw materials in the conveying hopper 401 to move towards the second blending mechanism 300.
3. The secondary mixing mechanism 300 is used for performing secondary mixing on the raw materials after primary mixing, and specifically:
as shown in fig. 7, the secondary mixing mechanism 300 includes a mixing tank 301 mounted on the frame 100 and having a closed upper end and an open lower end and provided with a tank bottom 302, the tank bottom 302 having a conical shape with a diameter increasing from bottom to top, the upper end of the mixing tank 301 being provided with a mounting hole in which a filter element 303 is provided for ventilation, but metal powder cannot circulate, such as gauze.
As shown in fig. 8 and 9, an upper bracket 305 is provided at the upper end of the mixing tank 301, an upper pipe 306 coaxial with the mixing tank 301 is provided on the upper bracket 305, a connecting pipe 307 is provided on the outer circumferential surface of the upper pipe 306 in the radial direction, and the end of the connecting pipe 307 is communicated with the conveying mechanism 400.
The lower end of the upper pipe 306 is coaxially and rotatably provided with a lower pipe 308, the lower pipe orifice of the lower pipe 308 extends into the mixing tank 301, and in addition, the frame 100 is provided with a first motor 304 for driving the lower pipe 308 to rotate.
The lower pipe orifice of the lower pipe 308 is coaxially provided with a mounting seat 309, the upper end of the mounting seat 309 is sealed and provided with a connecting hole communicated with the lower pipe 308, the lower end of the mounting seat is open and provided with a conical sleeve 311, the conical sleeve 311 is conical in shape and the diameter of the conical sleeve increases gradually from bottom to top, the outer circular surface of the mounting seat 309 is provided with a plurality of connectors 310 in an array manner along the circumferential direction, the outer hole of each connector 310 is provided with a discharging pipe 314 in an extending manner, the whole discharging pipe 314 is in the shape shown in fig. 8, and the tail end of the discharging pipe 314 is close to the inner wall of the mixing tank 301.
As shown in fig. 9, an air guide seat 312 is coaxially installed in the installation seat 309 through an inner bracket, the diameter of the air guide seat 312 increases from bottom to top, and then is equal and then decreases, an air hole is coaxially formed in the air guide seat 312, an air pipe 313 extends from the upper hole opening of the air hole, and the upper pipe opening of the air pipe 313 extends out of the upper pipe 306 and is connected with an air compressor.
The lower orifice of the connecting hole extends downwards to form a bulge, the upper end and the lower end of the bulge are opened and are conical with the diameters decreasing from top to bottom, and the lower opening of the bulge is close to the outer surface of the air guide seat 312.
The raw materials after preliminary mixing drops into the mount pad 309 through the traction of conveying mechanism 400, loops through connecting pipe 307, upper pipe 306, lower pipe 308, simultaneously, compressed air flows into the toper cover 311 through air pipe 313 and gas pocket, then flows into mixing tank 301 through connect mouth 310 and ejection of compact pipeline 314 to discharge from filter element 303, in the compressed air flow process, because the raw materials are the metal powder, the particle diameter of metal powder is less, and the quality is lighter, can be taken together by the air current and flow to mixing tank 301.
It should be noted that, although two different metal powders exist in the raw material after preliminary mixing, the two metal powders in the raw material after preliminary mixing are drawn together into the mixing tank 301 because the particle size of the metal powders is small and the individual quality of the two metal powders is weak.
In addition, in metal powder metallurgy, the finer the powder particle size is, the larger the specific surface area is, and the molding and sintering are easy, so in the above process, if the raw material is doped with the metal particles with relatively larger particle size, the airflow will not move the metal particles, and the metal particles will be left in the conical sleeve 311, that is, the effect of air floatation screening is achieved, further, the mixing tank 301 and the conical sleeve 311 are provided with glass windows for observing the amount of the metal particles in the conical sleeve 311, and when the amount of the metal particles affects the flow of the metal powder, the mixing tank 301 is paused, the conical sleeve 311 is detached, the metal particles are removed, and the metal powder is reinstalled.
As shown in fig. 7 and 10, a collision seat 315 is coaxially installed in the mixing tank 301 through a support bracket 316, and the collision seat 315 is conical in shape and the diameter decreases from bottom to top.
Raw materials that follow air current flows pass through the end of ejection of compact pipeline 314 and discharge, then can collide with collision seat 315, the back that sputters can collide with the raw materials at the back again, the collision plays the mixing effect like this, carry out secondary mixing to the raw materials, meanwhile, first 304 of motor can drive down the pipeline 308 rotation, and then take mount pad 309 and ejection of compact pipeline 314 to rotate together, make secondary mixing effect better, preferably, the end of ejection of compact pipeline 314 is perpendicular with the surface of collision seat 315, make the raw materials reach the maximize with the collision of collision seat 315, and then improve the effect of collision mixing.
Furthermore, the metal powder and the metal powder are possibly adhered due to molecular force and are in a powder cluster shape, and the impact of collision can be used for dispersing the metal powder and the metal powder, and the metal powder are uniformly mixed after the impact, so that the uniform mixing effect is better.
In the preferred embodiment, during the secondary mixing process, if the bottom of the tank bottom 302 is open, the secondary mixed raw material falls from the tank bottom 302, but air is also discharged from the tank bottom, so that the raw material is discharged and flying dust can occur, and the raw material cannot be collected, if the bottom of the tank bottom 302 is closed, the secondary mixed raw material gradually accumulates at the tank bottom 302, and a period of time is needed to pause, open the tank bottom 302, and discharge the raw material, so that the process is very troublesome:
as shown in fig. 6 and 11, an auxiliary member for assisting discharge is provided below the can bottom 302, specifically:
the auxiliary member includes an outer shell 319 with a closed upper end and a feed hole 320, an open lower end and a shell cover 321, a discharge hole 322 is arranged on the shell cover 321, and a storage device for collecting the raw materials after secondary uniform mixing is arranged below the discharge hole 322.
The outer casing 319 is rotatably provided with a rotating body 323, the rotating body 323 is provided with a rotating shaft, an input end of the rotating shaft extends out of the outer casing 319 and is driven to rotate by a motor III 325, storage holes 324 are axially formed in the rotating body 323 in a penetrating mode, at least two groups of storage holes 324 are formed in the rotating body 323 in an array mode along the circumferential direction of the rotating body 323, and in addition, initially, the feeding holes 320 and the discharging holes 322 are respectively communicated with the corresponding storage holes 324.
In addition, the bottom of the tank bottom 302 is open and communicates with the feed aperture 320.
After the secondary uniformly mixed raw materials fall into the storage hole 324 through the feeding hole 320, after a preset time, the motor III 325 drives the rotating body 323 to rotate, the next group of empty storage holes 324 are positioned in the feeding hole 320 to continuously store the raw materials, the storage hole 324 storing the raw materials is positioned at the discharging hole 322, and the raw materials are discharged into a storage device through the discharging hole 322.
In the preferred embodiment, during the delivery of the metal powder at the lower opening of the can bottom 302, the powder tends to cause the lower opening of the can bottom 302 to become blocked, impeding the delivery of the feedstock, and therefore: as shown in fig. 10, the collision seat 315 is hollow and coaxially provided with a second motor 318, the output end of the second motor 318 extends out and is in power connection with a vane 317 arranged in the tank bottom 302, the second motor 318 drives the vane 317 to rotate, and the raw material after uniformly mixing the metal powder enters the storage hole 324 from the lower opening of the tank bottom 302, and it should be noted that the vane 317 only rotates at a low speed, so as to assist the falling of the raw material, but not to stir.
The working process of the secondary mixing mechanism 300 is specifically shown as follows:
the raw materials after preliminary mixing are pulled by the conveying mechanism 400, fall into the mounting seat 309 through the connecting pipeline 307, the upper pipeline 306 and the lower pipeline 308 in sequence, meanwhile, compressed air flows into the conical sleeve 311 through the air pipeline 313 and the air holes, then flows into the mixing tank 301 through the connector 310 and the discharging pipeline 314, and is discharged from the filtering element 303, and in the flowing process of the compressed air, the air flows into the mixing tank 301 together with the raw materials after preliminary mixing;
raw materials that follow the air current flows pass through the end of ejection of compact pipeline 314 and discharge, then can collide with collision seat 315, and the back can collide with the raw materials behind again after the sputtering, and the collision plays the mixing effect like this, carries out secondary mixing to the raw materials, and simultaneously, motor one 304 can drive down the pipeline 308 rotation, and then takes mount pad 309 and ejection of compact pipeline 314 to rotate together, makes secondary mixing effect better.
The present invention is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present invention.
Claims (2)
1. A metal powder metallurgy mixing arrangement, which includes a frame, characterized in that: the machine frame is provided with a primary mixing mechanism and a secondary mixing mechanism, the primary mixing mechanism is used for receiving and uniformly flattening a preset amount of raw material a and raw material b, the raw material b is uniformly stacked on the raw material a, the raw material a and the raw material b are subjected to primary mixing in a vibration mode, the secondary mixing mechanism is used for carrying out air flotation screening and secondary mixing on the raw material subjected to primary mixing, the secondary mixing mode is collision, and a conveying mechanism for traction raw material transfer is arranged between a discharge end of the primary mixing mechanism and a feed end of the secondary mixing mechanism;
the primary mixing mechanism comprises a sliding seat which is arranged on the frame in a sliding manner along the horizontal direction and a first driving piece which is used for driving the sliding seat to move;
the first-level mixing mechanism further comprises two groups of flattening components, one group of flattening components are arranged on the sliding seat, the other group of flattening components are arranged on the frame, and the flattening components arranged on the frame are positioned below the flattening components arranged on the sliding seat;
the flattening component comprises a mounting bracket which is mounted on the rack or the sliding seat through a vibrating element, a conveying belt is mounted on the mounting bracket, the conveying direction of the conveying belt is parallel to the sliding direction of the sliding seat, two groups of side plates which are parallel to the conveying direction of the conveying belt are arranged on the mounting bracket and are respectively positioned at two sides of the conveying belt along the conveying direction, the side plates are in contact with the side surfaces of the conveying belt, the upper end surface of the side plates is higher than the conveying belt, and a guide plate positioned below the discharge end of the conveying belt is obliquely arranged on the mounting bracket;
the flattening component further comprises a brake bar positioned above the conveying belt, the extending direction of the brake bar is parallel to the width direction of the conveying belt, two groups of brake bars are arranged along the conveying direction of the conveying belt, a wire rail parallel to the conveying direction of the conveying belt is arranged on the mounting bracket, the brake bar and the wire rail form sliding connection, and two ends of the brake bar are respectively contacted with the two groups of partition boards;
the mounting bracket is provided with a second driving piece and a connecting bracket positioned between the second driving piece and the wire rail, and the second driving piece is used for driving the connecting bracket to lift;
one side of each of the two groups of partition boards, which is opposite to each other, is provided with a group of synchronous belts, the moving direction of the synchronous belts is parallel to the wire rail, the end parts of the brake levers extend to form convex frames, the convex frames are provided with convex pins which are vertically arranged, the convex pins are inserted into insertion holes arranged on the synchronous belts, and the connection parts of the convex pins on the two groups of brake levers and the synchronous belts are respectively positioned at the upper side and the lower side of the synchronous belts;
the secondary mixing mechanism comprises a mixing tank with a closed upper end and an open lower end and provided with a tank bottom, the tank bottom is conical in shape and the diameter of the tank bottom increases gradually from bottom to top, the upper end of the mixing tank is provided with a mounting hole, and a filter element is arranged in the mounting hole;
an upper bracket is arranged at the upper end of the mixing tank, an upper pipeline coaxial with the mixing tank is arranged on the upper bracket, a connecting pipeline is arranged on the outer circular surface of the upper pipeline along the radial direction, and the tail end of the connecting pipeline is communicated with the conveying mechanism;
the lower end of the upper pipeline is coaxially and rotatably provided with a lower pipeline, a lower pipe orifice of the lower pipeline extends into the mixing tank, and a first motor for driving the lower pipeline to rotate is arranged on the frame;
the lower pipe orifice of the lower pipe is coaxially provided with a mounting seat, the upper end of the mounting seat is sealed and provided with a connecting hole communicated with the lower pipe, the lower end of the mounting seat is opened and can be detachably provided with a conical sleeve, the conical sleeve is conical, the diameter of the conical sleeve increases gradually from bottom to top, the outer circular surface of the mounting seat is provided with a plurality of connectors in an array manner along the circumferential direction, and the outer hole of each connector is provided with a discharge pipe in an extending manner;
the secondary mixing mechanism further comprises an air pipeline coaxial with the lower pipeline, wherein the lower pipe orifice of the air pipeline is close to the conical sleeve, and the upper pipe orifice extends out of the upper pipeline and is connected with the air compressor;
the air guide seat is coaxially arranged in the mounting seat through the inner support, the diameter of the air guide seat increases gradually from bottom to top, is equal to the diameter of the air guide seat and decreases gradually from top to bottom, an air hole is coaxially formed in the air guide seat, the upper orifice of the air hole is connected with the lower orifice of the air pipeline, the lower orifice of the connecting hole extends downwards to form a bulge, the bulge is in a conical shape with openings at the upper end and the lower end, the diameter of the bulge decreases gradually from top to bottom, and the lower opening of the bulge is close to the outer surface of the air guide seat;
a collision seat is coaxially arranged in the mixing tank through a support bracket, the collision seat is conical with the diameter decreasing from bottom to top, and the tail end of the discharging pipeline is vertical to the outer surface of the collision seat;
an auxiliary member is arranged below the tank bottom, the auxiliary member comprises an outer shell, the upper end of the outer shell is sealed, a feeding hole is formed in the upper end of the outer shell, the lower end of the outer shell is open, a shell cover is provided with a discharging hole, a storage device is placed below the discharging hole, a rotating body is rotatably arranged in the outer shell, a storage hole penetrates through the rotating body along the axial direction, at least two groups of storage holes are arranged in an array along the circumferential direction of the rotating body, and initially, the feeding hole and the discharging hole are respectively communicated with the corresponding storage holes, and the bottom of the tank bottom is open and communicated with the feeding hole;
the frame is provided with a motor III for driving the rotator to rotate.
2. A metal powder metallurgical mixing apparatus according to claim 1, wherein: the inside of the collision seat is hollow and is coaxially provided with a motor II, and the output end of the motor II extends out and is in power connection with the blade arranged in the tank bottom.
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| CN202311401179.7A CN117123118B (en) | 2023-10-26 | 2023-10-26 | Metal powder metallurgy mixing arrangement |
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| CN202311401179.7A CN117123118B (en) | 2023-10-26 | 2023-10-26 | Metal powder metallurgy mixing arrangement |
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| CN117123118B true CN117123118B (en) | 2024-03-19 |
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| CN213493105U (en) * | 2020-10-13 | 2021-06-22 | 宁波优戈新材料科技有限公司 | Metallurgical powder mixing device |
| CN113041944A (en) * | 2021-04-08 | 2021-06-29 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Site-type material fine crushing and high-quality efficient mixing equipment and method |
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2023
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| GB1487513A (en) * | 1974-01-29 | 1977-10-05 | Varta Batterie | Method of carrying out reactions between pulverulent and gaseous substances |
| CN108421460A (en) * | 2018-05-16 | 2018-08-21 | 金旭晨 | A kind of livestock rearing feed processing feed integrated device |
| CN110405202A (en) * | 2019-07-28 | 2019-11-05 | 南京涵曦月自动化科技有限公司 | A kind of automatic charging device of metal powder metallurgy |
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