CN107983969B - Device for continuously reducing metal powder and application method thereof - Google Patents
Device for continuously reducing metal powder and application method thereof Download PDFInfo
- Publication number
- CN107983969B CN107983969B CN201711470435.2A CN201711470435A CN107983969B CN 107983969 B CN107983969 B CN 107983969B CN 201711470435 A CN201711470435 A CN 201711470435A CN 107983969 B CN107983969 B CN 107983969B
- Authority
- CN
- China
- Prior art keywords
- cavity
- feeding
- discharging
- unit
- reducing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000000843 powder Substances 0.000 title claims abstract description 114
- 239000002184 metal Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 83
- 230000009467 reduction Effects 0.000 claims abstract description 52
- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 26
- 230000009191 jumping Effects 0.000 claims description 27
- 238000009792 diffusion process Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010924 continuous production Methods 0.000 abstract description 4
- 238000010146 3D printing Methods 0.000 abstract description 3
- 238000005272 metallurgy Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 16
- 238000007790 scraping Methods 0.000 description 16
- 230000005484 gravity Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
Abstract
The invention relates to the technical field of 3D printing material manufacturing and metallurgy, in particular to a device for continuously reducing metal powder and a using method thereof. The device comprises a vacuum pump set, a vibration conveying unit, a feeding cavity, a reduction cavity, a discharging cavity, a feeding unit and a discharging unit, wherein the feeding cavity, the reduction cavity and the discharging cavity are sequentially connected; a first sealing door used for communicating or isolating the feeding cavity and the reducing cavity is arranged between the feeding cavity and the reducing cavity, a second sealing door used for communicating or isolating the reducing cavity and the discharging cavity is arranged between the reducing cavity and the discharging cavity, and an air inlet and an air outlet which can be opened and closed are arranged on the feeding unit, the feeding cavity, the reducing cavity and the discharging cavity, and one end of the vibration conveying unit is arranged below the feeding unit, and the other end of the vibration conveying unit extends to the discharging unit. The invention not only can realize continuous production under the same reduction environment and greatly improve the productivity and ensure the quality of the reduced metal powder, but also can obviously reduce the consumption of reducing gas.
Description
Technical Field
The invention relates to the technical field of 3D printing material manufacturing and metallurgy, in particular to a device for continuously reducing metal powder and a using method thereof.
Background
Metal powder is an important branch of the material industry, and workpieces prepared from metal powder have excellent properties that cannot be obtained by other materials. Therefore, the metal powder has wide application prospect in the fields of aerospace, electronic information, metallurgy, energy, electric power, medical treatment and the like. With the development of 3D printing technology, the application field of metal powder is further expanded.
At present, a tubular furnace or a box furnace is mainly adopted for single-furnace charging reduction when reducing metal powder at home and abroad. When the single furnace is charged and reduced, continuous production cannot be realized, each furnace needs to undergo the heating and cooling processes, so that working hours are wasted, production efficiency is low, reducing medium loss is large, and the reducing environment of each furnace has fine difference, so that the uniformity and stability of metal powder after batch reduction are relatively poor, and the quality is low.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the technical problems that the metal powder cannot be continuously reduced, the production efficiency is low and the quality of the reduced metal powder is poor in the prior art.
(II) technical scheme
In order to solve the technical problems, the invention provides a device for continuously reducing metal powder, which comprises a vacuum pump set, a vibration conveying unit, a feeding cavity, a reducing cavity, a discharging cavity, a feeding unit and a discharging unit, wherein the feeding cavity, the reducing cavity and the discharging cavity are sequentially connected, the feeding unit is connected with the upper part of the feeding cavity, and the discharging unit is connected with the lower part of the discharging cavity; a first sealing door used for communicating or separating the feeding cavity from the reducing cavity is arranged between the feeding cavity and the reducing cavity, a second sealing door used for communicating or separating the reducing cavity from the discharging cavity is arranged between the reducing cavity and the discharging cavity, the feeding unit, the feeding cavity, the reduction cavity and the discharging cavity are respectively provided with an air inlet and an air outlet which can be opened and closed, the vacuum pump set is respectively connected with the feeding unit, the feeding cavity, the reduction cavity and the discharging cavity, and one end of the vibration conveying unit is arranged below the feeding unit, and the other end of the vibration conveying unit extends to the discharging unit.
The feeding unit comprises a first discharging hopper, a first valve and a first powder collecting tank connected with the vacuum pump set, wherein the first powder collecting tank is communicated with an inlet of the first discharging hopper through the first valve, an outlet of the first discharging hopper is communicated with the top of the feeding cavity, and the first powder collecting tank is provided with an air inlet, an air outlet and a charging opening capable of being opened and closed.
The discharging unit comprises a second powder collecting tank, a second valve and a second discharging hopper, wherein an inlet of the second discharging hopper is communicated with the bottom of the discharging cavity, and an outlet of the second discharging hopper is communicated with the second powder collecting tank through the second valve.
The second powder collecting tank is provided with a cooling channel, and a water inlet and a water outlet of the cooling channel are respectively arranged at the lower part and the upper part of the second powder collecting tank.
The device comprises a reduction cavity, a material scraping assembly, a vibration conveying unit and a driver, wherein the material scraping assembly is arranged in the reduction cavity and comprises a connecting plate, a material scraping plate and the driver, a first end of the connecting plate is connected with the top surface of the reduction cavity, a second end of the connecting plate is rotationally connected with the first end of the material scraping plate, the second end of the material scraping plate extends to the vibration conveying unit, and the driver is used for driving the second end of the material scraping plate to rotate by taking the first end of the material scraping plate as a rotating shaft.
The vacuum pump set comprises a mechanical pump, a Roots pump and a diffusion pump which are sequentially connected, wherein the mechanical pump is respectively connected with the feeding unit, the feeding cavity, the reduction cavity and the discharging cavity.
Wherein, still include with the heater that the reduction chamber is connected.
The vibration conveying unit comprises a conveying plate, a first end of the conveying plate is arranged below the feeding unit, a second end of the conveying plate extends to the discharging unit, and the conveying plate is inclined downwards from the first end of the conveying plate to the second end of the conveying plate.
The bottom of the material conveying plate is connected with a vibration exciter, and the vibration exciter is used for driving the material conveying plate to vibrate.
In order to solve the above problems, the present invention also provides a method for using an apparatus for continuously reducing metal powder, the method comprising the steps of:
s0, loading metal powder to be reduced into the first powder collection tank, and jumping to execute the step S1;
s1, starting a mechanical pump, a Roots pump and a diffusion pump in sequence, and executing the step S2 in a jumping manner;
s2, when the pressures in the first powder collecting tank, the feeding cavity, the reduction cavity and the discharging cavity all reach a first specified pressure, turning off the mechanical pump, the Roots pump and the diffusion pump, starting the heater at the same time, and jumping to execute the step S3;
s3, after the temperature in the reduction cavity reaches the designated temperature, introducing reducing gas into the first powder collecting tank, the feeding cavity, the reduction cavity and the discharge cavity through air inlets on the first powder collecting tank, the feeding cavity, the reduction cavity and the discharge cavity respectively, and jumping to execute the step S4;
s4, after the pressures in the first powder collecting tank, the feeding cavity, the reduction cavity and the discharging cavity respectively reach second designated pressures, opening a first valve, and jumping to execute the step S5;
s5, after a first designated time, closing the first valve, opening the first sealing door, starting the vibration exciter and the driver at the same time, and jumping to execute the step S6;
s6, after the second designated time, closing the first sealing door, and jumping to execute the step S7;
s7, after a third designated time, opening a second sealing door and a second valve, and jumping to execute the step S8;
and S8, after the fourth designated time, closing the second valve, the vibration exciter and the driver, and jumping to execute the step S4.
(III) beneficial effects
The metal powder to be reduced, which is added into the feeding cavity by the feeding unit, is conveyed to the reducing cavity by the vibrating conveying unit by opening the first sealing door, then the metal powder to be reduced is reduced by reducing gas which is introduced into the reducing cavity after the first sealing door is closed, and finally the metal powder reduced in the reducing cavity can be conveyed to the discharging unit by the vibrating conveying unit by opening the second sealing door, so that continuous production can be realized in the same reducing environment, the productivity is greatly improved, the quality of the reduced metal powder is ensured, the consumption of reducing gas is obviously reduced, and the cost is saved.
Drawings
Fig. 1 is a schematic view of an apparatus for continuously reducing metal powder in embodiment 1 of the present invention.
Reference numerals:
1. a feed chamber; 2. a reduction chamber; 3. a discharge cavity; 5. an exhaust port; 6. an air inlet;
7. a first sealing door; 8. a second sealing door; 11. a first powder collecting tank;
12. a first valve; 13. a first blanking hopper; 20. a connecting plate; 21. a scraping plate;
31. a second powder collecting tank; 32. a second valve; 33. a second blanking hopper; 40. a material conveying plate;
41. a vibration exciter; 71. a mechanical pump; 72. roots pump; 73. and a diffusion pump.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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.
In the description of the present invention, unless otherwise indicated, the terms "upper," "lower," "top," "bottom," and the like refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description and simplicity of description only, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
It should be noted that unless explicitly stated or limited otherwise, the term "coupled" is to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the invention will be understood by those of ordinary skill in the art in a specific context.
Example 1
As shown in fig. 1, an embodiment of the present invention provides an apparatus for continuously reducing metal powder, the apparatus comprising a vacuum pump unit, a vibration conveying unit, a feeding chamber 1, a reducing chamber 2, a discharging chamber 3, a feeding unit connected with the upper part of the feeding chamber 1, and a discharging unit connected with the lower part of the discharging chamber 3, which are sequentially connected; a first sealing door 7 used for communicating or isolating the feeding cavity 1 and the reducing cavity 2 is arranged between the feeding cavity 1 and the reducing cavity 2, a second sealing door 8 used for communicating or isolating the reducing cavity 2 and the discharging cavity 3 is arranged between the reducing cavity 2 and the discharging cavity 3, an air inlet 6 and an air outlet 5 which can be opened and closed are arranged on the feeding unit, the feeding cavity 1, the reducing cavity 2 and the discharging cavity 3, a vacuum pump set is respectively connected with the feeding unit, the feeding cavity 1, the reducing cavity 2 and the discharging cavity 3, one end of the vibration conveying unit is arranged below the feeding unit, and the other end of the vibration conveying unit extends to the discharging unit.
When in use, the utility model is characterized in that: firstly, filling sufficient metal powder to be reduced in a feeding unit; then, starting a vacuum pump set until the pressure values in the feeding unit, the feeding cavity 1, the reduction cavity 2 and the discharging cavity 3 reach a first designated pressure; secondly, opening air inlets 6 on the feeding unit, the feeding cavity 1, the reduction cavity 2 and the discharging cavity 3, and enabling all the air inlets 6 to be communicated with an air source so as to respectively introduce reducing gas into the feeding unit, the feeding cavity 1, the reduction cavity 2 and the discharging cavity 3; thirdly, when specified amounts of reducing gas are introduced into the feeding unit, the feeding cavity 1, the reducing cavity 2 and the discharging cavity 3, namely after the pressure in the feeding unit, the feeding cavity 1, the reducing cavity 2 and the discharging cavity 3 reaches a second specified pressure, metal powder to be reduced is added into the feeding cavity 1 through the feeding unit, and as one end of the vibration conveying unit is arranged below the feeding unit and the other end extends to the discharging unit, the metal powder to be reduced, which is added into the feeding cavity 1 from the feeding unit, falls onto the vibration conveying unit; step four, the first sealing door 7 is opened to communicate the feeding cavity 1 and the reduction cavity 2, so that metal powder to be reduced in the feeding cavity 1 enters the reduction cavity 2 through the vibration conveying unit; the fifth step, the first sealing door 7 is closed, that is, the reducing chamber 2 is a closed space, that is, the reducing chamber 2 is not communicated with the feeding chamber 1 and the discharging chamber 3, so that the reducing gas filled in the reducing chamber 2 continuously reduces the metal powder to be reduced in the reducing chamber 2; and sixthly, after the specified time, namely after the metal powder to be reduced is fully reduced, opening the second sealing door 8, and enabling the reduced metal powder to enter the discharging cavity 3 through the vibration conveying unit and finally fall into the discharging unit under the self gravity. Since a large amount of reducing gas remains in the reducing chamber 2, when the metal powder is also required to be reduced, only the third to sixth steps are repeated. The invention can realize continuous production in the same reducing environment, greatly improve the productivity, ensure the quality of the reduced metal powder, obviously reduce the consumption of reducing gas and save the cost.
Preferably, an exhaust gas treatment unit is provided at each exhaust port 5. For example, when the reducing gas is hydrogen, the exhaust gas treatment unit is an igniter to ignite the hydrogen discharged from the exhaust port 5.
Preferably, the feeding unit comprises a first discharging hopper 13, a first valve 12 and a first powder collecting tank 11 connected with the vacuum pump group, wherein the first powder collecting tank 11 is communicated with an inlet of the first discharging hopper 13 through the first valve 12, an outlet of the first discharging hopper 13 is communicated with the top of the feeding cavity 1, and an air inlet 6, an air outlet 5 and a openable charging port are formed in the first powder collecting tank 11. Therefore, the metal powder to be reduced can be filled into the first powder collecting tank 11 through the charging port, and when the metal powder is required to be reduced, the metal powder in the first powder collecting tank 11 can sequentially enter the feeding cavity 1 through the first valve 12 and the first discharging hopper 13 under the action of gravity only by opening the first valve 12 and fall onto the vibration conveying unit.
Further, the first discharging hopper 13 is a first conical hopper, a large end of which is connected to the first valve 12 and a small end of which is inserted into the feeding chamber 1 so as to control the amount of metal powder to be reduced fed into the feeding chamber 1.
Preferably, the blanking unit comprises a second powder collecting tank 31, a second valve 32 and a second blanking hopper 33, wherein an inlet of the second blanking hopper 33 is communicated with the bottom of the discharging cavity 3, and an outlet of the second blanking hopper is communicated with the second powder collecting tank 31 through the second valve 32. Since one end of the vibration conveying unit is disposed below the feeding unit and the other end extends to the discharging unit, when the metal powder reduced in the reduction chamber 2 moves to the end of the vibration conveying unit adjacent to the discharging unit after the second valve 32 is opened, the metal powder directly falls into the inlet of the second discharging hopper 33 under the action of gravity and finally falls into the second powder collecting tank 31 through the second valve 32.
More preferably, the second discharging hopper 33 is a second conical hopper, the big end of which is communicated with the bottom of the discharging cavity 3, and the small end of which is connected with the second valve 32. Wherein the first valve 12 and/or the second valve 32 are ball valves comprising a valve body and a valve switch connected to the valve body.
Preferably, the second powder collecting tank 31 is provided with a cooling channel, and a water inlet and a water outlet of the cooling channel are respectively arranged at the lower part and the upper part of the second powder collecting tank 31. In addition to cooling the reduced metal powder in the second powder collecting tank 31 by providing a cooling passage in the second powder collecting tank 31, a cooling water pipe may be wound around the outer wall of the second powder collecting tank 31.
In addition, in order to further increase the contact area between the metal powder to be reduced in the reduction chamber 2 and the reducing gas, the device further comprises a scraping assembly arranged in the reduction chamber 2, the scraping assembly comprises a connecting plate 20, a scraping plate 21 and a driver, a first end of the connecting plate 20 is connected with the top surface of the reduction chamber 2, a second end of the connecting plate is rotationally connected with the first end of the scraping plate 21, a second end of the scraping plate 21 extends to the vibration conveying unit, and the driver is used for driving the second end of the scraping plate 21 to rotate by taking the first end of the scraping plate 21 as a rotating shaft. More preferably, the second end of the connection plate 20 is connected to the first end of the scraper 21 by a hinge. Thus, when the first sealing door 7 is closed when all the metal powder to be reduced in the feed chamber 1 enters the reduction chamber 2, the driver is started, and the second end of the scraper 21 rotates around the first end of the scraper 21 as a rotation axis. Since the second end of the scraper 21 extends to the vibratory conveying unit, when the scraper 21 rotates, the metal powder to be reduced, which is stacked higher on the vibratory conveying unit, is pushed flat by the scraper 21, so that the metal powder to be reduced can be uniformly laid on the vibratory conveying unit through multiple reciprocating rotations of the scraper 21.
Preferably, the vacuum pump unit comprises a mechanical pump 71, a Roots pump 72 and a diffusion pump 73 which are sequentially connected, and the mechanical pump 71 is respectively connected with the feeding unit, the feeding cavity 1, the reduction cavity 2 and the discharging cavity 3.
In addition, the apparatus further includes a heater connected to the reduction chamber 2 to accelerate the reaction between the metal powder to be reduced and the reducing gas by increasing the temperature inside the reduction chamber 2.
Preferably, the vibration conveying unit includes a conveying plate 40, a first end of the conveying plate 40 is disposed below the feeding unit, a second end of the conveying plate extends to the discharging unit, and the conveying plate 40 is inclined downward from the first end of the conveying plate 40 to the second end of the conveying plate 40. Wherein the inclination angle of the feed plate 40 is 5 to 10 °. Therefore, the metal powder can slide into the reduction cavity 2, the discharging cavity 3 and the blanking unit from the feeding cavity 1 in sequence along the length direction of the material conveying plate 40 under the action of self gravity.
Further, a vibration exciter 41 is connected to the bottom of the feeding plate 40, and the vibration exciter 41 is used for driving the feeding plate 40 to vibrate. The advantages of this arrangement are that: on the one hand, the vibration exciter 41 can drive the material conveying plate 40 to vibrate so as to accelerate the moving speed of the metal powder on the material conveying plate 40; on the other hand, when the material conveying plate 40 vibrates, the metal powder to be reduced on the material conveying plate 40 also jumps along with the material conveying plate, so that the reducing gas fills gaps among the metal powder to be reduced, the metal powder to be reduced can be fully reduced, the reaction speed can be obviously improved, and the production efficiency is further improved.
Example 2
The invention also provides a method of using the apparatus for continuously reducing metal powder, the method comprising the steps of:
s0, loading metal powder to be reduced into the first powder collecting tank 11, namely loading the metal powder to be reduced into the first powder collecting tank 11 through a loading port, and jumping to execute the step S1;
s1, starting a mechanical pump 71, a Roots pump 72 and a diffusion pump 73 in sequence, and jumping to execute the step S2;
s2, when the pressures in the first powder collecting tank 11, the feeding cavity 1, the reduction cavity 2 and the discharging cavity 3 all reach a first designated pressure, the mechanical pump 71, the Roots pump 72 and the diffusion pump 73 are closed, the heater is started at the same time, and the step S3 is executed in a jumping manner; wherein the first specified pressure is of the order of 10 -3 Pa。
S3, after the temperature in the reduction cavity 2 reaches the designated temperature, introducing reducing gas into the feed cavity 1, the reduction cavity 2 and the discharge cavity 3 through the air inlets 6 on the first powder collecting tank 11, the feed cavity 1, the reduction cavity 2 and the discharge cavity 3 respectively, and jumping to execute the step S4; specifically, the air inlets 6 on the first powder collecting tank 11, the feeding cavity 1, the reducing cavity 2 and the discharging cavity 3 are opened, so that all the air inlets 6 are communicated with an air source, and the same reducing gas is respectively introduced into the feeding cavity 1, the reducing cavity 2 and the discharging cavity 3.
S4, after the pressures in the first powder collecting tank 11, the feeding cavity 1, the reduction cavity 2 and the discharging cavity 3 respectively reach the second designated pressure, opening the first valve 12, enabling the metal powder to be reduced in the first powder collecting tank 11 to enter the feeding cavity 1 through the first discharging hopper 13 under the action of self gravity, finally falling onto the material conveying plate 40, and then jumping to execute the step S5;
s5, after a first designated time elapses, namely after a designated amount of metal powder to be reduced is filled in the feeding cavity 1, closing the first valve 12, opening the first sealing door 7, simultaneously starting the vibration exciter 41 and the driver, and jumping to execute the step S6; specifically, when the feeding cavity 1 is communicated with the reduction cavity 2 and the vibration exciter 41 and the driver are started, the metal powder to be reduced on the material conveying plate 40 can rapidly slide from the feeding cavity 1 into the reduction cavity 2 under the self gravity and the vibration of the vibration exciter 41, and meanwhile, the scraping plate 21 can rapidly spread the metal powder to be reduced entering the reduction cavity 2 on the material conveying plate 40 under the driving of the driver.
S6, after a second designated time passes, namely after all the metal powder to be reduced in the feeding cavity 1 enters the reduction cavity 2, closing the first sealing door 7, and jumping to execute the step S7;
s7, after the third designated time passes, namely after the metal powder to be reduced is fully reduced, the first sealing door 7 is closed, the second sealing door 8 and the second valve 32 are opened, the reduced metal powder reaches the discharging cavity 3 along the material conveying plate 40, finally falls into the second powder collecting tank 31 through the second discharging hopper 33 and the second valve 32, and the step S8 is carried out in a jumping manner;
and S8, after the fourth designated time passes, that is, after all the reduced metal powder falls into the second powder collecting tank 31, closing the second valve 32, the vibration exciter 41 and the driver, and jumping to execute the step S4.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The device for continuously reducing the metal powder is characterized by comprising a vacuum pump set, a vibration conveying unit, a feeding cavity, a reduction cavity, a discharging cavity, a feeding unit and a discharging unit, wherein the feeding cavity, the reduction cavity and the discharging cavity are sequentially connected, the feeding unit is connected with the upper part of the feeding cavity, and the discharging unit is connected with the lower part of the discharging cavity; a first sealing door used for communicating or blocking the feeding cavity with the reducing cavity is arranged between the feeding cavity and the reducing cavity, a second sealing door used for communicating or blocking the reducing cavity with the discharging cavity is arranged between the reducing cavity and the discharging cavity, an air inlet and an air outlet which can be opened and closed are formed in each of the feeding unit, the feeding cavity, the reducing cavity and the discharging cavity, the vacuum pump set is respectively connected with the feeding unit, the feeding cavity, the reducing cavity and the discharging cavity, and one end of the vibration conveying unit is arranged below the feeding unit, and the other end of the vibration conveying unit extends to the discharging unit;
the vibration conveying unit comprises a conveying plate, a first end of the conveying plate is arranged below the feeding unit, a second end of the conveying plate extends to the discharging unit, and the conveying plate is inclined downwards from the first end of the conveying plate to the second end of the conveying plate;
the bottom of the material conveying plate is connected with a vibration exciter, and the vibration exciter is used for driving the material conveying plate to vibrate;
the feeding unit comprises a first blanking hopper, a first valve and a first powder collecting tank connected with the vacuum pump set, wherein the first powder collecting tank is communicated with an inlet of the first blanking hopper through the first valve, an outlet of the first blanking hopper is communicated with the top of the feeding cavity, and the first powder collecting tank is provided with an air inlet, an air outlet and a charging port capable of being opened and closed;
the blanking unit comprises a second powder collecting tank, a second valve and a second blanking hopper, wherein an inlet of the second blanking hopper is communicated with the bottom of the discharging cavity, and an outlet of the second blanking hopper is communicated with the second powder collecting tank through the second valve.
2. The apparatus for continuously reducing metal powder according to claim 1, wherein the second powder collecting tank is provided with a cooling passage, and a water inlet and a water outlet of the cooling passage are provided at a lower portion and an upper portion of the second powder collecting tank, respectively.
3. The apparatus for continuously reducing metal powder according to claim 1, further comprising a scraper assembly disposed in the reduction chamber, the scraper assembly comprising a connecting plate, a scraper plate, and a driver, a first end of the connecting plate being connected to a top surface of the reduction chamber, a second end of the connecting plate being rotatably connected to the first end of the scraper plate, the second end of the scraper plate extending to the vibratory conveying unit, the driver being for driving the second end of the scraper plate to rotate about the first end of the scraper plate.
4. The apparatus for continuously reducing metal powder according to claim 1, wherein the vacuum pump unit includes a mechanical pump, a roots pump, and a diffusion pump connected in sequence, the mechanical pump being connected to the feeding unit, the feeding chamber, the reduction chamber, and the discharging chamber, respectively.
5. The apparatus for continuously reducing metal powder according to claim 1, further comprising a heater connected to the reduction chamber.
6. A method of using the apparatus for continuously reducing metal powder according to any one of claims 1 to 5, comprising the steps of:
s0, loading metal powder to be reduced into the first powder collection tank, and jumping to execute the step S1;
s1, starting a mechanical pump, a Roots pump and a diffusion pump in sequence, and executing the step S2 in a jumping manner;
s2, when the pressures in the first powder collecting tank, the feeding cavity, the reduction cavity and the discharging cavity all reach a first specified pressure, turning off the mechanical pump, the Roots pump and the diffusion pump, starting the heater at the same time, and jumping to execute the step S3;
s3, after the temperature in the reduction cavity reaches the designated temperature, introducing reducing gas into the first powder collecting tank, the feeding cavity, the reduction cavity and the discharge cavity through air inlets on the first powder collecting tank, the feeding cavity, the reduction cavity and the discharge cavity respectively, and jumping to execute the step S4;
s4, after the pressures in the first powder collecting tank, the feeding cavity, the reduction cavity and the discharging cavity respectively reach second designated pressures, opening a first valve, and jumping to execute the step S5;
s5, after a first designated time, closing the first valve, opening the first sealing door, starting the vibration exciter and the driver at the same time, and jumping to execute the step S6;
s6, after the second designated time, closing the first sealing door, and jumping to execute the step S7;
s7, after a third designated time, opening a second sealing door and a second valve, and jumping to execute the step S8;
and S8, after the fourth designated time, closing the second valve, the vibration exciter and the driver, and jumping to execute the step S4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470435.2A CN107983969B (en) | 2017-12-29 | 2017-12-29 | Device for continuously reducing metal powder and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711470435.2A CN107983969B (en) | 2017-12-29 | 2017-12-29 | Device for continuously reducing metal powder and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107983969A CN107983969A (en) | 2018-05-04 |
| CN107983969B true CN107983969B (en) | 2024-02-23 |
Family
ID=62042274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711470435.2A Active CN107983969B (en) | 2017-12-29 | 2017-12-29 | Device for continuously reducing metal powder and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107983969B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB672423A (en) * | 1949-05-10 | 1952-05-21 | Metro Cutanit Ltd | Improvements relating to the manufacture of metal powders, especially those of very fine grain size |
| JPH0693312A (en) * | 1992-09-10 | 1994-04-05 | Kao Corp | Method and device for production magnetic metal powder |
| JPH0873907A (en) * | 1994-09-02 | 1996-03-19 | Kao Corp | Production of magnetic metal powder and apparatus therefor |
| CN1806971A (en) * | 2006-02-15 | 2006-07-26 | 戴煜 | Method for preparing homogenous superfine metal powder material and apparatus thereof |
| CN200988857Y (en) * | 2006-09-28 | 2007-12-12 | 武汉桂坤科技有限公司 | Coal base environment protection type steel strip type reducing furnace |
| CN202442584U (en) * | 2012-02-17 | 2012-09-19 | 王长春 | Rotary reduction furnace |
| CN103276225A (en) * | 2013-06-06 | 2013-09-04 | 江西海宸光电科技有限公司 | Apparatus and process method for preparing simple substance arsenic by continuously reducing arsenic oxide |
| CN103551584A (en) * | 2013-11-02 | 2014-02-05 | 莱芜文博粉末科技有限公司 | Continuous production device for preparing reduced iron powder in one step |
| CN104439265A (en) * | 2014-11-03 | 2015-03-25 | 武汉钢铁(集团)公司 | Method and device for producing micron-sized superfine iron powder through regenerative iron red |
| CN204449318U (en) * | 2015-03-14 | 2015-07-08 | 邯郸兰德雾化制粉设备有限公司 | A kind of swinging high performance induction heating dynamic reduction device |
| CN105033283A (en) * | 1998-05-06 | 2015-11-11 | H.C.施塔克公司 | Niobium or tantalum based powder produced by the reduction of the oxides with a gaseous metal |
| CN205996193U (en) * | 2016-08-30 | 2017-03-08 | 郑州机械研究所 | A kind of metal powder reduction rotary furnace |
| CN207952640U (en) * | 2017-12-29 | 2018-10-12 | 深圳微纳增材技术有限公司 | A kind of device for continuous reducing metal powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6626976B2 (en) * | 2001-11-06 | 2003-09-30 | Cyprus Amax Minerals Company | Method for producing molybdenum metal |
-
2017
- 2017-12-29 CN CN201711470435.2A patent/CN107983969B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB672423A (en) * | 1949-05-10 | 1952-05-21 | Metro Cutanit Ltd | Improvements relating to the manufacture of metal powders, especially those of very fine grain size |
| JPH0693312A (en) * | 1992-09-10 | 1994-04-05 | Kao Corp | Method and device for production magnetic metal powder |
| JPH0873907A (en) * | 1994-09-02 | 1996-03-19 | Kao Corp | Production of magnetic metal powder and apparatus therefor |
| CN105033283A (en) * | 1998-05-06 | 2015-11-11 | H.C.施塔克公司 | Niobium or tantalum based powder produced by the reduction of the oxides with a gaseous metal |
| CN1806971A (en) * | 2006-02-15 | 2006-07-26 | 戴煜 | Method for preparing homogenous superfine metal powder material and apparatus thereof |
| CN200988857Y (en) * | 2006-09-28 | 2007-12-12 | 武汉桂坤科技有限公司 | Coal base environment protection type steel strip type reducing furnace |
| CN202442584U (en) * | 2012-02-17 | 2012-09-19 | 王长春 | Rotary reduction furnace |
| CN103276225A (en) * | 2013-06-06 | 2013-09-04 | 江西海宸光电科技有限公司 | Apparatus and process method for preparing simple substance arsenic by continuously reducing arsenic oxide |
| CN103551584A (en) * | 2013-11-02 | 2014-02-05 | 莱芜文博粉末科技有限公司 | Continuous production device for preparing reduced iron powder in one step |
| CN104439265A (en) * | 2014-11-03 | 2015-03-25 | 武汉钢铁(集团)公司 | Method and device for producing micron-sized superfine iron powder through regenerative iron red |
| CN204449318U (en) * | 2015-03-14 | 2015-07-08 | 邯郸兰德雾化制粉设备有限公司 | A kind of swinging high performance induction heating dynamic reduction device |
| CN205996193U (en) * | 2016-08-30 | 2017-03-08 | 郑州机械研究所 | A kind of metal powder reduction rotary furnace |
| CN207952640U (en) * | 2017-12-29 | 2018-10-12 | 深圳微纳增材技术有限公司 | A kind of device for continuous reducing metal powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107983969A (en) | 2018-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101777977B1 (en) | Metal Powders Drying Apparatus for Manufacturing of Secondary Cell Battery And Drying Method Theeof | |
| CN105536645B (en) | Three pot types automate particulate manufacturing method and system | |
| CN102248174B (en) | Gas reducing equipment for metal powder and preparation method of metal powder | |
| CN105032306B (en) | Solid-phase atmosphere reaction device | |
| CN105384167B (en) | A kind of powdery graphite continuous high temperature heat-treatment production line | |
| CN107983969B (en) | Device for continuously reducing metal powder and application method thereof | |
| CN104944955B (en) | M＜y＞(C＜X＞N＜1-X＞) powder rotary type dynamic continuous preparation method and sintering device | |
| CN202205700U (en) | Low-temperature plasma treatment device on surface of granular material | |
| CN209522919U (en) | Chemical vapor deposition stove and chemical vapor depsotition equipment | |
| CN109261100B (en) | Reaction system for preparing carbon material | |
| CN207952640U (en) | A kind of device for continuous reducing metal powder | |
| CN217686481U (en) | Drying device is used in yeast powder production | |
| CN203617245U (en) | Novel powder plasma treating device | |
| CN107267933B (en) | A kind of reaction electron beam evaporation equipment for moving target certainly | |
| CN206325553U (en) | A kind of agitating device of li-ion electrode materials carbon encapsulated material | |
| CN110649221B (en) | Processing method of lithium battery pole piece | |
| CN203588971U (en) | Improved granular material rotation plasma processing device | |
| CN203590584U (en) | Granular material rotation plasma processing device | |
| CN207448847U (en) | A kind of ABS products agitating device | |
| CN205061568U (en) | Ladle revolver | |
| CN110530157A (en) | A kind of oxygen-free copper material production heating smelting apparatus | |
| CN103971924B (en) | Magnetic crystallization furnace | |
| CN203826204U (en) | Magnetic powder crystallization furnace | |
| CN104549106B (en) | A kind of synthetic tower | |
| CN219621252U (en) | Dispersing system for chemical vapor deposition of coating powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |