CN107983969A - A kind of device and its application method for continuous reducing metal powder - Google Patents
A kind of device and its application method for continuous reducing metal powder Download PDFInfo
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- CN107983969A CN107983969A CN201711470435.2A CN201711470435A CN107983969A CN 107983969 A CN107983969 A CN 107983969A CN 201711470435 A CN201711470435 A CN 201711470435A CN 107983969 A CN107983969 A CN 107983969A
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- chamber
- feed cavity
- reduction chamber
- unit
- collecting pot
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- 239000000843 powder Substances 0.000 title claims abstract description 76
- 239000002184 metal Substances 0.000 title claims abstract description 67
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 78
- 238000007599 discharging Methods 0.000 claims abstract description 53
- 239000000428 dust Substances 0.000 claims abstract description 41
- 239000006052 feed supplement Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000007790 scraping Methods 0.000 claims description 19
- 238000009792 diffusion process Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000010146 3D printing Methods 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The present invention relates to 3D printing material manufacture and metallurgical technology field, and in particular to a kind of device and its application method for continuous reducing metal powder.The device includes vacuum pump group, vibrating transportation unit, sequentially connected feed cavity, reduction chamber and discharging chamber and the feed supplement unit being connected with the top of feed cavity, the blanking unit that is connected with the lower part of discharging chamber；It is equipped between feed cavity and reduction chamber and is used to connect or separate feed cavity with reducing the first hermatic door of chamber, it is equipped between reduction chamber and discharging chamber and is used to connecting or separating reduction chamber and the second hermatic door of discharging chamber, air inlet and exhaust outlet able to turn on or off are equipped with feed supplement unit, feed cavity, reduction chamber and discharging chamber, one end of vibrating transportation unit extends to blanking unit arranged on feed supplement unit lower section, the other end.The present invention can not only realize continuous production under identical reducing environment, greatly improve productivity, ensure the quality of the metal dust after reducing, and can also substantially reduce the consumption of reducibility gas.
Description
Technical field
The present invention relates to 3D printing material manufacture and metallurgical technology field, and in particular to one kind is used for continuous reducing metal powder
The device and its application method at end.
Background technology
Metal dust is the important branch of material industry, and the workpiece prepared using metal dust, has other materials institute
The excellent properties that can not be obtained.Therefore, metal dust is in fields such as aerospace, electronic information, metallurgy, the energy, electric power, medical treatment
Have a wide range of applications.With the development of 3D printing technique, the application field of metal dust also further expands.
At present, single stove charging reduction is mainly carried out using tube furnace or batch-type furnace during domestic and international reducing metal powder.Single stove
During charging reduction, can not continuous production, each stove is required for experience heating, cooling process, not only waste of time, production efficiency
It is low, reducing medium waste is big, and the reducing environment of each stove can all have nuance, so cause batch reduce after gold
It is relatively poor to belong to uniformity, the stability of powder, so that quality is not high.
The content of the invention
(1) technical problems to be solved
The present invention is to solve gold that in the prior art can not continuously after reducing metal powder, low production efficiency, reduction
Belong to the technical problem of powder properties difference.
(2) technical solution
In order to solve the above technical problems, the present invention provides a kind of device for continuous reducing metal powder, the device
Including vacuum pump group, vibrating transportation unit, sequentially connected feed cavity, reduction chamber and discharging chamber and upper with the feed cavity
The feed supplement unit of portion's connection, the blanking unit being connected with the lower part of the discharging chamber；Between the feed cavity and the reduction chamber
Equipped with for connecting or separating the feed cavity and the first hermatic door of the reduction chamber, reduction chamber and the discharging chamber it
Between be equipped with the second hermatic door for being used for connecting or separate reduction chamber and the discharging chamber, the feed supplement unit, the charging
Be equipped with air inlet and exhaust outlet able to turn on or off in chamber, the reduction chamber and the discharging chamber, the vacuum pump group respectively with institute
State feed supplement unit, the feed cavity, the reduction chamber to connect with the discharging chamber, one end of the vibrating transportation unit is arranged on institute
State below feed supplement unit, the other end extends to the blanking unit.
Wherein, the feed supplement unit include the first lower hopper, the first valve and be connected with the vacuum pump group first
Powder collecting pot, first powder collecting pot pass through first valve and the inlet communication of first lower hopper, first blanking
The outlet of bucket is connected with the top of the feed cavity, first powder collecting pot be equipped with the air inlet, the exhaust outlet and
Charging door able to turn on or off.
Wherein, the blanking unit includes the second powder collecting pot, the second valve and the second lower hopper, second lower hopper
Import connects with the bottom of the discharging chamber, exports and is connected by second valve with second powder collecting pot.
Wherein, second powder collecting pot is equipped with cooling duct, and the water inlet and water outlet of the cooling duct are set respectively
In the lower part and top of second powder collecting pot.
Wherein, the scraper component being arranged in the reduction chamber is further included, the scraper component includes connecting plate, material scraping plate
And driver, the first end of the connecting plate be connected with the top surface of the reduction chamber, the first end of second end and the material scraping plate
Rotation connection, the second end of the scraper version extend to the vibrating transportation unit, and the driver is used to drive the scraper
The second end of plate is rotated by shaft of the first end of the scraper version.
Wherein, the vacuum pump group includes sequentially connected mechanical pump, lobe pump and diffusion pump, the mechanical pump respectively with
The feed supplement unit, the feed cavity, the reduction chamber are connected with the discharging chamber.
Wherein, the heater being connected with the reduction chamber is further included.
Wherein, the vibrating transportation unit includes conveying plate, and the first end of the conveying plate is arranged on the feed supplement unit
Lower section, second end extend to the blanking unit, and the conveying plate by the first end of the conveying plate to the conveying plate
Second end tilts down.
Wherein, the bottom of the conveying plate is connected with vibrator, and the vibrator is used to drive the conveying panel vibration.
To solve the above problems, present invention also offers a kind of user of the device for continuous reducing metal powder
Method, the application method comprise the following steps：
S0, load metal dust to be restored into the first powder collecting pot, and redirects and perform step S1；
S1, start mechanical pump, lobe pump and diffusion pump successively, and redirects and perform step S2；
S2, when the first powder collecting pot, feed cavity, reduction chamber and discharging chamber in pressure reach first specify pressure after, close
Mechanical pump, lobe pump and diffusion pump are closed, while starts heater, and redirects and performs step S3；
S3, after the temperature for reducing intracavitary reaches assigned temperature, pass through the first powder collecting pot, feed cavity, reduction chamber and discharging
Air inlet on chamber is passed through reducibility gas to the first powder collecting pot, feed cavity, reduction chamber and discharging chamber respectively, and redirects and perform step
Rapid S4；
S4, when the first powder collecting pot, feed cavity, reduction chamber and discharging chamber in pressure respectively reach second specify pressure after,
The first valve is opened, and redirects and performs step S5；
S5, after the first specified time, close the first valve, and open the first hermatic door, while start vibrator and
Driver, and redirect and perform step S6；
S6, after the second specified time, close the first hermatic door, and redirect and perform step S7；
S7, after the 3rd specified time, open the second hermatic door and the second valve, and redirect and perform step S8；
S8, after the 4th specified time, close the second valve, vibrator and driver, and redirect and perform step S4.
(3) beneficial effect
The configuration of the present invention is simple, simple operation, by opening the first hermatic door, treating also for feed cavity is added by feed supplement unit
Former metal dust by vibrating transportation unit transportation to chamber is reduced, then after the first hermatic door is closed using being passed through reduction chamber
Reducibility gas by metal powder reduction to be restored, the gold after being reduced in chamber can will be reduced by finally opening the second hermatic door
Belong to powder by vibrating transportation unit transportation to blanking unit, so as to be realized under reducing environment that can not only be identical continuous raw
Production, greatly improves productivity, ensures the quality of the metal dust after reducing, and can also substantially reduce the consumption of reducibility gas
Amount, it is cost-effective.
Brief description of the drawings
Fig. 1 is a kind of schematic diagram of device for continuous reducing metal powder in the embodiment of the present invention 1.
Reference numeral：
1st, feed cavity；2nd, chamber is reduced；3rd, discharging chamber；5th, exhaust outlet；6th, air inlet；
7th, the first hermatic door；8th, the second hermatic door；11st, the first powder collecting pot；
12nd, the first valve；13rd, the first lower hopper；20th, connecting plate；21st, material scraping plate；
31st, the second powder collecting pot；32nd, the second valve；33rd, the second lower hopper；40th, conveying plate；
41st, vibrator；71st, mechanical pump；72nd, lobe pump；73rd, diffusion pump.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained on the premise of creative work is not made, belong to the scope of protection of the invention.
In the description of the present invention, unless otherwise indicated, the orientation or position of the instruction such as term " on ", " under ", " top ", " bottom "
It is based on orientation shown in the drawings or position relationship to put relation, is for only for ease of the description present invention and simplifies description, rather than
Indicate or imply that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore cannot
It is interpreted as limitation of the present invention.
It should be noted that unless otherwise clearly defined and limited, term " connection " should be interpreted broadly, for example, can
To be to be fixedly connected or be detachably connected, or it is integrally connected；It can be directly connected, middle matchmaker can also be passed through
Jie is indirectly connected.For the ordinary skill in the art, tool of the above-mentioned term in invention can be understood with concrete condition
Body implication.
Embodiment 1
As shown in Figure 1, an embodiment of the present invention provides a kind of device for continuous reducing metal powder, which includes
Vacuum pump group, vibrating transportation unit, sequentially connected feed cavity 1, reduction chamber 2 and discharging chamber 3 and the top company with feed cavity 1
The feed supplement unit connect, the blanking unit being connected with the lower part of discharging chamber 3；Feed cavity 1 and reduction chamber 2 between be equipped be used for connect or
Separate feed cavity 1 and the first hermatic door 7 of reduction chamber 2, be equipped between reduction chamber 2 and discharging chamber 3 and be used to connect or separate reduction
Second hermatic door 8 of chamber 2 and discharging chamber 3, be equipped with feed supplement unit, feed cavity 1, reduction chamber 2 and discharging chamber 3 it is able to turn on or off into
Gas port 6 and exhaust outlet 5, vacuum pump group are connected with feed supplement unit, feed cavity 1, reduction chamber 2 and discharging chamber 3 respectively, vibrating transportation list
One end of member is arranged on below feed supplement unit, the other end extends to blanking unit.
During use：The first step, load enough metal dusts to be restored in feed supplement unit；Then, vacuum pump is started
Group, until the pressure value in feed supplement unit, feed cavity 1, reduction chamber 2 and discharging chamber 3, which reaches first, specifies pressure；Second step, beat
The air inlet 6 in feed supplement unit, feed cavity 1, reduction chamber 2 and discharging chamber 3 is opened, all air inlets 6 is connected with source of the gas, to divide
Reducibility gas is not passed through into feed supplement unit, feed cavity 1, reduction chamber 2 and discharging chamber 3,；3rd step, when feed supplement unit, charging
I.e. feed supplement unit, feed cavity 1, reduction chamber 2 are passed through after the reducibility gas of specified amount in chamber 1, reduction chamber 2 and discharging chamber 3 and is gone out
Pressure in material chamber 3 reach second specify pressure after, by feed supplement unit to adding the metal dust to be restored of feed cavity 1, by
Blanking unit is extended to arranged on feed supplement unit lower section, the other end in one end of vibrating transportation unit, therefore is added from feed supplement unit
The metal dust to be restored of feed cavity 1 can be fallen on vibrating transportation unit；4th step, open the first hermatic door 7 i.e. connect into
Expect chamber 1 and reduction chamber 2, and then the metal dust to be restored in feed cavity 1 will enter reduction chamber by vibrating transportation unit
2；5th step, closes the first hermatic door 7, that is to say, that it is a confined space to reduce chamber 2 at this time, that is, reduces chamber 2 and feed cavity
1 does not connect with discharging chamber 3, is treated so as to be full of the reducibility gas in reduction chamber 2 and will constantly reduce in reduction chamber 2
The metal dust of reduction；6th step, after specified time, i.e., after metal dust to be restored is reduced sufficiently, opens second
Hermatic door 8, the metal dust after reduction will enter discharging chamber 3 by vibrating transportation unit, and finally fall in self gravitation
Enter blanking unit.Due to also retaining a large amount of reducibility gas in reduction chamber 2, when also needing reducing metal powder, weight is only needed
Multiple 3rd step to the 6th step.It can be seen that the present invention not only can realize continuous production under identical reducing environment, greatly improve
Productivity, the quality for ensureing the metal dust after reducing, and the consumption of reducibility gas can also be substantially reduced, save into
This.
Preferably, it is equipped with tail gas treating unit at each exhaust outlet 5.For example, when reducibility gas is hydrogen, tail gas
Processing unit for igniter, with light from exhaust outlet 5 discharge hydrogen.
Preferably, feed supplement unit includes the first lower hopper 13, the first valve 12 and the first collection being connected with vacuum pump group
Powder tank 11, the first powder collecting pot 11 pass through the first valve 12 and the inlet communication of the first lower hopper 13, the outlet of the first lower hopper 13
Connected with the top of feed cavity 1, the first powder collecting pot 11 is equipped with air inlet 6, exhaust outlet 5 and charging door able to turn on or off.Thus,
Metal dust to be restored can be loaded by the first powder collecting pot 11 by charging door, when also needing reducing metal powder, need to only be beaten
Open the first valve 12, the metal dust in the first powder collecting pot 11 can pass sequentially through the first valve 12 and first under the effect of gravity
Lower hopper 13 enters feed cavity 1, and falls on vibrating transportation unit.
Further, the first lower hopper 13 is the first conical hopper, and the big end of the first conical hopper connects with the first valve 12
Connect, in small end insertion feed cavity 1, in order to control the amount for the metal dust to be restored for adding feed cavity 1.
Preferably, blanking unit includes the second powder collecting pot 31, the second valve 32 and the second lower hopper 33, the second lower hopper 33
Import connected with the bottom of discharging chamber 3, export and connected by the second valve 32 with the second powder collecting pot 31.Due to vibrating transportation list
After one end of member is arranged on below feed supplement unit, the other end extends to blanking unit, therefore the second valve 32 is opened, when reduction chamber 2
Metal dust after middle reduction is moved to vibrating transportation unit when closing on one end of blanking unit, and metal dust will be made in gravity
The import of the second lower hopper 33 is fallen directly under, and the second powder collecting pot 31 is dropped into eventually through the second valve 32.
It is highly preferred that the second lower hopper 33 is the second conical hopper, the big end of the second conical hopper and the bottom of discharging chamber 3
Connection, small end are connected with the second valve 32.Wherein, the first valve 12 and/or the second valve 32 are ball valve, which includes valve body
And the valve switch being connected with valve body.
Preferably, the second powder collecting pot 31 is equipped with cooling duct, and the water inlet and water outlet of cooling duct are respectively arranged on
The lower part and top of two powder collecting pots 31.It is it should be noted that cold except through setting cooling duct on the second powder collecting pot 31
But beyond the metal dust after being reduced in the second powder collecting pot 31, also cooling water pipe can be wound on the outer wall of the second powder collecting pot 31.
In addition, in order to further increase the contact area of metal dust to be restored in reduction chamber 2 and reducibility gas, should
Device further includes the scraper component being arranged in reduction chamber 2, and scraper component includes connecting plate 20, material scraping plate 21 and driver, even
The first end of fishplate bar 20 be connected with reducing the top surface of chamber 2, the rotation connection of the first end of second end and material scraping plate 21, material scraping plate 21
Second end extends to vibrating transportation unit, driver be used to driving the second end of material scraping plate 21 using the first end of material scraping plate 21 for turn
Axis rotates.It is highly preferred that the second end of connecting plate 20 is connected by hinge with the first end of material scraping plate 21.Thus, when feed cavity 1
In metal dust to be restored fully enter reduction chamber 2 when i.e. close the first hermatic door 7 when, startup driver, material scraping plate 21
Second end will using the first end of material scraping plate 21 as shaft rotate.Since the second end of material scraping plate 21 extends to vibrating transportation list
Member, therefore when material scraping plate 21 rotates, accumulating higher metal dust to be restored on vibrating transportation unit will be by material scraping plate
21 are bulldozed, so as to by the multiple reciprocating rotation of material scraping plate 21 metal dust to be restored can be made uniformly to be laid on vibrating transportation
On unit.
Preferably, vacuum pump group includes sequentially connected mechanical pump 71, lobe pump 72 and diffusion pump 73, and mechanical pump 71 is distinguished
It is connected with feed supplement unit, feed cavity 1, reduction chamber 2 and discharging chamber 3.
In addition, the device further include with reduction chamber 2 be connected heater, with by improve reduction chamber 2 in temperature come add
Reaction between speed metal dust and reducibility gas to be restored.
Preferably, vibrating transportation unit includes conveying plate 40, and the first end of conveying plate 40 is arranged on the lower section of feed supplement unit, the
Two ends extend to blanking unit, and conveying plate 40 is tilted down by the second end of first end to the conveying plate 40 of conveying plate 40.Its
In, the angle of inclination of conveying plate 40 is 5~10 °.Thus, metal dust can be under the action of self gravitation along conveying plate 40
Length direction slips into reduction chamber 2, discharging chamber 3 and blanking unit from feed cavity 1 successively.
Further, the bottom of conveying plate 40 is connected with vibrator 41, and vibrator 41 is used to drive conveying plate 40 to vibrate.This
Sample, which is set, to be advantageous in that：On the one hand, the vibration of conveying plate 40 can be driven to accelerate metal dust in conveying plate by vibrator 41
Translational speed on 40；On the other hand, when conveying plate 40 is vibrated, the metal dust to be restored in conveying plate 40 also can be therewith
Bounce, and then the gap that reducibility gas can be made to be full of between metal dust to be restored, so as to can not only ensure to be restored
Metal dust be reduced sufficiently, but also be remarkably improved reaction speed, and then improve production efficiency.
Embodiment 2
Present invention also offers a kind of application method of the device for continuous reducing metal powder, which includes
Following steps：
S0, load metal dust to be restored into the first powder collecting pot 11, i.e., by charging door by metal powder to be restored
End loads the first powder collecting pot 11, and redirects and perform step S1；
S1, start mechanical pump 71, lobe pump 72 and diffusion pump 73 successively, and redirects and perform step S2；
S2, when the first powder collecting pot 11, feed cavity 1, reduction chamber 2 and discharging chamber 3 in pressure reach first specify pressure
Afterwards, mechanical pump 71, lobe pump 72 and diffusion pump 73 are closed, while starts heater, and redirects and performs step S3；Wherein, first
The magnitude for specifying pressure is 10-3Pa。
S3, after reducing the temperature in chamber 2 and reaching assigned temperature, pass through the first powder collecting pot 11, feed cavity 1, reduction chamber 2 and
Air inlet 6 in discharging chamber 3 is passed through reducibility gas to feed cavity 1, reduction chamber 2 and discharging chamber 3 respectively, and redirects execution step
S4；Specifically, the air inlet 6 in the first powder collecting pot 11, feed cavity 1, reduction chamber 2 and discharging chamber 3 is opened, makes all air inlets 6
Connected with source of the gas, to be passed through identical reducibility gas into feed cavity 1, reduction chamber 2 and discharging chamber 3 respectively.
S4, when the first powder collecting pot 11, feed cavity 1, reduction chamber 2 and discharging chamber 3 in pressure respectively reach second specify pressure
Qiang Hou, opens the first valve 12, and the metal dust to be restored in the first powder collecting pot 11 is just by the under self gravitation effect
One lower hopper 13 enters feed cavity 1, and eventually falls in conveying plate 40, then redirects and performs step S5；
S5, after the first specified time be after loading the metal dust to be restored of specified amount in feed cavity 1, to close the
One valve 12, and the first hermatic door 7 is opened, while start vibrator 41 and driver, and redirect and perform step S6；Specifically,
Metal dust to be restored is just when feed cavity 1 is connected with reduction chamber 2 and vibrator 41 and driver start, in conveying plate 40
It can quickly be slided under the vibration of self gravitation and vibrator 41 from feed cavity 1 in reduction chamber 2, at the same time, material scraping plate 21
Quickly the metal dust to be restored for entering reduction chamber 2 can be laid in conveying plate 40 under the driving of driver.
After S6, the metal dust to be restored after the second specified time i.e. in feed cavity 1 fully enter reduction chamber 2,
The first hermatic door 7 is closed, and redirects and performs step S7；
After S7, metal dust i.e. to be restored after the 3rd specified time are reduced sufficiently, the first hermatic door 7 is closed,
The second hermatic door 8 and the second valve 32 are opened, the metal dust after reduction will reach discharging chamber 3 along conveying plate 40, and most
The second powder collecting pot 31 is fallen into by the second lower hopper 33 and the second valve 32 eventually, and redirects and performs step S8；
S8, reduced after the 4th specified time after metal dust entirely fall in the second powder collecting pot 31 after, close the
Two valves 32, vibrator 41 and driver, and redirect and perform step S4.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical solution spirit and
Scope.
Claims (10)
- A kind of 1. device for continuous reducing metal powder, it is characterised in that including vacuum pump group, vibrating transportation unit, according to Feed cavity, reduction chamber and the discharging chamber of secondary connection and the feed supplement unit being connected with the top of the feed cavity and the discharging The blanking unit of the lower part connection of chamber；It is equipped between the feed cavity and the reduction chamber and is used to connect or separates the feed cavity With the first hermatic door of the reduction chamber, it is equipped between the reduction chamber and the discharging chamber and is used to connect or separate the reduction Second hermatic door of chamber and the discharging chamber, in the feed supplement unit, the feed cavity, the reduction chamber and the discharging chamber Equipped with air inlet and exhaust outlet able to turn on or off, the vacuum pump group respectively with the feed supplement unit, the feed cavity, the reduction Chamber is connected with the discharging chamber, and one end of the vibrating transportation unit extends to institute arranged on feed supplement unit lower section, the other end State blanking unit.
- 2. the device according to claim 1 for continuous reducing metal powder, it is characterised in that the feed supplement unit bag The first lower hopper, the first valve and the first powder collecting pot being connected with the vacuum pump group are included, first powder collecting pot passes through institute The inlet communication of the first valve and first lower hopper is stated, the outlet of first lower hopper at the top of the feed cavity with connecting Logical, first powder collecting pot is equipped with the air inlet, the exhaust outlet and charging door able to turn on or off.
- 3. the device according to claim 1 for continuous reducing metal powder, it is characterised in that the blanking unit bag Include the second powder collecting pot, the second valve and the second lower hopper, the import of second lower hopper connects with the bottom of the discharging chamber, Outlet is connected by second valve with second powder collecting pot.
- 4. the device according to claim 3 for continuous reducing metal powder, it is characterised in that second powder collecting pot It is equipped with cooling duct, the water inlet and water outlet of the cooling duct are respectively arranged on the lower part of second powder collecting pot and upper Portion.
- 5. the device according to claim 1 for continuous reducing metal powder, it is characterised in that further include and be arranged on institute The scraper component in reduction chamber is stated, the scraper component includes connecting plate, material scraping plate and driver, the first end of the connecting plate It is connected with the top surface of the reduction chamber, second end and the first end of the material scraping plate are rotatablely connected, the second end of the scraper version The vibrating transportation unit is extended to, the second end that the driver is used to drive the material scraping plate is with the first of the scraper version Hold and rotated for shaft.
- 6. the device according to claim 1 for continuous reducing metal powder, it is characterised in that the vacuum pump group bag Include sequentially connected mechanical pump, lobe pump and diffusion pump, the mechanical pump respectively with the feed supplement unit, the feed cavity, institute Reduction chamber is stated to connect with the discharging chamber.
- 7. the device according to claim 1 for continuous reducing metal powder, it is characterised in that further include and gone back with described The heater of former chamber connection.
- 8. the device according to any one of claims 1 to 7 for continuous reducing metal powder, it is characterised in that described Vibrating transportation unit includes conveying plate, and the first end of the conveying plate is extended to arranged on the lower section of the feed supplement unit, second end The blanking unit, and the conveying plate is tilted down by the second end of first end to the conveying plate of the conveying plate.
- 9. the device according to claim 8 for continuous reducing metal powder, it is characterised in that the bottom of the conveying plate Portion is connected with vibrator, and the vibrator is used to drive the conveying panel vibration.
- 10. the application method of a kind of device for continuous reducing metal powder, it is characterised in that comprise the following steps：S0, load metal dust to be restored into the first powder collecting pot, and redirects and perform step S1；S1, start mechanical pump, lobe pump and diffusion pump successively, and redirects and perform step S2；S2, when the first powder collecting pot, feed cavity, reduction chamber and discharging chamber in pressure reach first specify pressure after, close machine Tool pump, lobe pump and diffusion pump, while start heater, and redirect and perform step S3；S3, when reduce intracavitary temperature reach assigned temperature after, by the first powder collecting pot, feed cavity, reduction chamber and discharging chamber on Air inlet be passed through reducibility gas to the first powder collecting pot, feed cavity, reduction chamber and discharging chamber respectively, and redirect execution step S4；S4, when the first powder collecting pot, feed cavity, reduction chamber and discharging chamber in pressure respectively reach second specify pressure after, open First valve, and redirect and perform step S5；S5, after the first specified time, close the first valve, and open the first hermatic door, while start vibrator and driving Device, and redirect and perform step S6；S6, after the second specified time, close the first hermatic door, and redirect and perform step S7；S7, after the 3rd specified time, open the second hermatic door and the second valve, and redirect and perform step S8；S8, after the 4th specified time, close the second valve, vibrator and driver, and redirect and perform step S4.
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| CN107983969B (en) | 2024-02-23 |
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