CN115319117A - Metal powder recovery plant - Google Patents
Metal powder recovery plant Download PDFInfo
- Publication number
- CN115319117A CN115319117A CN202210890720.4A CN202210890720A CN115319117A CN 115319117 A CN115319117 A CN 115319117A CN 202210890720 A CN202210890720 A CN 202210890720A CN 115319117 A CN115319117 A CN 115319117A
- Authority
- CN
- China
- Prior art keywords
- metal powder
- hopper
- screen assembly
- sieving
- recycling apparatus
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
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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
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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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
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- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The application relates to metal powder recovery equipment, characterized in that, including hopper (100), screening plant (200), collection device (300) and installing support (400), hopper (100) screening plant (200) with collection device (300) all set up in on installing support (400), just hopper (100) screening plant (200) with collection device (300) sealing connection in proper order, and distribute in proper order in vertical direction, screening plant (200) with be provided with control assembly (500) between hopper (100), control assembly (500) are used for controlling the load of powder. The problem of the difficult realization of metal powder of production is printed to present 3D can be solved to this scheme.
Description
Technical Field
The invention relates to the technical field of equipment tools, in particular to metal powder recovery equipment.
Background
With the development and maturity of additive manufacturing technology, 3D printing is widely applied to the fields of industrial aviation, automobiles, medical treatment, scientific research and the like. Various models can be manufactured rapidly through metal powder forming, the flexibility is high, the customizable degree is high, and 3D printing is more suitable for parts with complex structures than traditional machining. Compared with the traditional machining, the additive manufacturing supporting equipment is not abundant, the metal 3D printing can generate residual powder in the printing process, the metal printing raw material is high in cost, if the metal printing raw material is not recycled, the metal printing raw material can cause great resource waste, the metal printing raw material is improper to recycle, and the metal powder can be oxidized or even explode.
The metal 3D printing process has strong discreteness, the granularity range that 3D printing process required the metal powder material is very narrow, the metal powder of gas atomization preparation is continuous normal distribution's granularity interval, sieve and get the powder product that 3D printed the use after, about remaining 70% metal powder, and the powder product that the quality of these powders was got is equivalent with the sieve, if can not get the application and can produce very big cost backlog, the application of surplus powder is developed, also can greatly reduced 3D and print the metal powder cost. At present, metal 3D prints supporting powder recovery plant not healthy, still adopts artifical manual (protective clothing + explosion-proof bracelet etc.) clearance + wet-type explosion-proof dust catcher's mode to carry out remaining powder clearance to retrieve mostly, and manual work itself has the operation degree of difficulty big and be difficult to the clean up scheduling problem moreover.
Disclosure of Invention
Based on this, it is necessary to provide a metal powder recycling apparatus for solving the problem that metal powder generated by current 3D printing is difficult to recycle.
In order to solve the problems, the invention adopts the following technical scheme:
the embodiment of the invention discloses metal powder recovery equipment which comprises a hopper, a screening device, a collecting device and an installation support, wherein the hopper, the screening device and the collecting device are all arranged on the installation support, the hopper, the screening device and the collecting device are sequentially and hermetically connected and are sequentially distributed in the vertical direction, and a control assembly is arranged between the screening device and the hopper and is used for controlling the discharge amount of powder.
In one embodiment, the screening device comprises an upper cover, a lower cover and a screen assembly, wherein the upper cover is connected with the lower cover in a sealing mode and encloses a screening cavity, the screen assembly is arranged in the screening cavity, and the screening cavity is divided into an upper cavity and a lower cavity by the screen assembly.
In one embodiment, the screening device further comprises a vibrating member in vibratory communication with the screen assembly.
In one embodiment, the vibrating element comprises a driving end and an annular transmission element, the driving end is in driving connection with the annular transmission element, the annular transmission element is designed to be conformal with the screen assembly, and the annular transmission element is in opposite contact with the screen assembly.
In one embodiment, the vibrating member is an ultrasonic vibrator.
In one embodiment, the cover is provided with at least one viewing window for viewing the internal conditions of the screening device.
In one embodiment, the upper cover is provided with a mounting hole, the visible window comprises a fixing piece and visible glass, the visible glass is mounted on the fixing piece, and the fixing piece is detachably connected to the mounting hole.
In one embodiment, a sealing ring is arranged between the fixing piece and the mounting hole, and the sealing ring is used for sealing a gap between the fixing piece and the mounting hole.
In one embodiment, the hopper, the screening device and the collecting device are communicated with each other through wear-resistant steel wire hoses.
In one of the embodiments, at least one of the hopper, the sieving device and the collecting device is provided with an oxygen content detector for detecting the oxygen content inside the metal powder recovery apparatus.
The technical scheme adopted by the invention can achieve the following beneficial effects:
according to the metal powder recovery device disclosed by the embodiment of the invention, the hopper, the screening device and the collecting device are hermetically communicated in pairs, so that the collection, screening, impurity removal and recycling of residual metal powder generated by 3D printing in a closed environment can be realized, and the structure can prevent the metal powder from generating an explosion phenomenon. Simultaneously, can guarantee metal 3D printing apparatus's printing efficiency through this kind of recovery plant, provide metal powder's reuse efficiency, reduce the manufacturing cost that metal printed. Moreover, the metal printing recovery equipment has the advantages of simple structure, convenient operation and higher recovery utilization rate
Drawings
FIG. 1 is a schematic structural diagram of a metal powder screening device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a screening device according to an embodiment of the present invention;
fig. 3 is a partial cross-sectional view of fig. 1.
Description of reference numerals:
100-hopper, 200-sieving device, 210-upper cover, 211-visible window, 220-lower cover, 230-screen assembly, 300-collecting device, 400-mounting bracket, 500-control assembly, 600-wear-resistant steel wire hose and 700-oxygen content detector.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 3, the embodiment of the invention discloses a metal powder recycling device, which is used for recycling residual powder generated by 3D metal printing, and comprises a hopper 100, a sieving device 200, a collecting device 300 and a mounting bracket 400.
The hopper 100 is used for temporarily storing metal powder so as to be used for subsequent screening work, specifically, in order to ensure the stability of the operation inside the equipment, the hopper 100 can be a vacuum device, meanwhile, a titanium rod filter core is arranged inside the hopper 100, the titanium rod filter core mainly has the function of realizing the separation of the metal powder and inert gas, a back-blowing air bag assembly can be further arranged on the hopper 100, and the back-blowing air bag assembly has the function of back-blowing a filter core and has the function of separating the metal powder and the gas; and the top of hopper 100 is provided with end control assembly, and the vacuum pipe is connected to end control assembly's the other end, and the vacuum pipe directly lets in the swirl fan.
The sieving device 200 is used for sieving metal powder, and the collecting device 300 is used for collecting the metal powder sieved by the sieving device 200, and the metal powder can be directly utilized.
Hopper 100, screening device 200 and collection device 300 all set up on installing support 400, installing support 400 provides the mounted position for each part promptly, and hopper 100, screening device 200 and collection device 300 be sealing connection in proper order, thereby guarantee the screening effect of metal powder, and hopper 100, screening device 200 and collection device 300 distribute in proper order in the vertical direction, realize above-mentioned installation through installing support 400, in this case, metal powder can fall in order to realize the screening through gravity nature, be provided with control assembly 500 between screening device 200 and the hopper 100, control assembly 500 is used for controlling the ejection of compact speed and the discharge capacity of powder, prevent that the too big powder screening function of discharge capacity from overload operation.
As can be seen from the above, in the metal powder recovery device disclosed in the embodiment of the present invention, the hopper 100, the sieving device 200, and the collecting device 300 are hermetically communicated with each other, so that the collection, sieving, impurity removal, and recycling of residual metal powder generated by 3D printing in a closed environment can be achieved, and the structure can prevent the metal powder from exploding. Simultaneously, can guarantee metal 3D printing apparatus's printing efficiency through this kind of recovery plant, provide metal powder's recycling efficiency, reduce the manufacturing cost that metal printed. Moreover, the metal printing recovery device is simple in structure, convenient to operate and high in recovery rate.
In an embodiment of the present invention, the sieving apparatus 200 may include an upper cover 210, a lower cover 220, and a screen assembly 230, the upper cover 210 may be hermetically connected to the lower cover 220, a sieving chamber is defined between the upper cover 210 and the lower cover 220, the screen assembly 230 may be disposed in the sieving chamber, and the sieving chamber may be divided into an upper chamber and a lower chamber by the screen assembly 230. In this case, the metal powder entering the upper cavity is screened by the screen assembly 230, so that the metal powder meets the use requirement, and the metal powder can be recycled. Of course, during the installation of the screen assembly 230, the screen assembly 230 may be in sealing connection with the inner wall of the screening chamber, specifically, the screen assembly 230 is in sealing connection with the inner wall of the screening chamber through a sealing ring to ensure the sealing performance.
Further, the screening device 200 may further include a vibrating member, which may be vibrationally coupled to the screen assembly 230. In this case, the vibrating member provides a vibrating force to the screen assembly 230 during the sieving of the metal powder, so that the powder discharging efficiency of the screen assembly 230 can be improved and the screen assembly 230 can be prevented from being clogged.
In an alternative embodiment, the vibratory member may include a drive end drivingly coupled to an endless drive member such that the endless drive member is driven to vibrate by the drive end, the endless drive member may be conformable to screen assembly 230, and the endless drive member may be in opposing contact with screen assembly 230. Specifically, during the installation process, the annular transmission members may be connected to each position of the screen assembly 230, so that the annular transmission members may contact each position of the screen assembly 230, and then may provide a vibrating force to each position of the screen assembly 230, so as to better prevent the screen assembly 230 from being clogged while the powder discharging efficiency of the screen assembly 230 is improved.
In an embodiment of the present invention, the vibrator may be an ultrasonic vibrator. Compared to other vibrators. The ultrasonic energy generated by the ultrasonic vibrator can be uniformly distributed around the sieving device 200, thereby achieving the best vibration effect; moreover, the power output of the ultrasonic vibrator is not influenced by load changes such as liquid level, tank body capacity, temperature difference and the like, and the power output is stable and uniform; compared with the traditional vibrating piece, the ultrasonic vibrating piece has the service life more than 1.5 times; meanwhile, the ultrasonic vibrator can ensure complete sealing and water proofing.
In the embodiment of the present disclosure, the upper cover 210 may be provided with at least one viewing window 211, and the viewing window 211 may be used to observe the internal condition of the sieving apparatus 200, so as to ensure that the sieving operation of the metal powder is performed normally, thereby improving the working efficiency.
Further, the upper cover 210 may be provided with a mounting hole, the visible window 211 may include a fixing member and a visible glass, the visible glass may be mounted on the fixing member, specifically, a concave-convex groove may be processed on the visible glass, and then the visible glass is bonded on the fixing member by a strong adhesive to ensure the sealing property; the fixing piece is detachably connected to the mounting hole. This kind of mode realizes the concrete installation to visual window 211, and the mounting can be dismantled and can also realize the maintenance of changing at any time to visual window 211, and then guarantee visual window 211's result of use. Of course, the visible window may have other installation manners, and the embodiment of the present invention is not limited thereto.
In an alternative embodiment, a sealing ring may be provided between the fixing member and the mounting hole, and the sealing ring may be used to seal a gap between the fixing member and the mounting hole. The sealing performance in the equipment can be guaranteed under the condition, so that the normal operation of the screening work of the metal powder is guaranteed, and the metal powder is prevented from being exploded or oxidized.
In specific connection process, chamfer and circular arc groove can be processed to the junction of mounting hole and mounting, then can link together mounting hole and mounting through the clamp, and compress tightly the sealing washer between mounting hole and the mounting through the clamp to guarantee the leakproofness of the two.
In the embodiment disclosed by the invention, the hopper 100, the screening device 200 and the collecting device 300 can be communicated with each other through the wear-resistant steel wire hose 600. At this moment, the pipeline that pipeline used is all wear-resisting steel wire hose, and the main reason is that metal powder has certain impact force at the in-process that the suction was carried, and ordinary pipeline time will be punctured by metal powder and is penetrated, consequently, this kind of mode can improve metal powder recovery plant's life.
In an alternative embodiment, at least one of the hopper 100, the sieving device 200, and the collecting device 300 may be provided with an oxygen content detector 700, and the oxygen content detector 700 may be used to detect the oxygen content inside the metal powder recovering apparatus. In this case, the oxygen content detector 700 can detect the oxygen content inside the hopper 100, the sieving device 200, and the collecting device 300, and prevent the metal powder from being oxidized inside the device, thereby ensuring the sieving effect of the metal powder.
Meanwhile, the side surface of the hopper 100 may have a port connected to a material suction pipe, and the other end of the material suction pipe may be connected to a material suction gun, so that in the material suction process, the metal powder needs to be kept in an inert gas protected environment all the time to prevent oxidation of the metal powder and possible explosion risks.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. The utility model provides a metal powder recovery plant, characterized in that, includes hopper (100), screening plant (200), collection device (300) and installing support (400), hopper (100) screening plant (200) with collection device (300) all set up in on installing support (400), just hopper (100) screening plant (200) with collection device (300) sealing connection in proper order, and distribute in proper order in vertical direction, screening plant (200) with be provided with control assembly (500) between hopper (100), control assembly (500) are used for controlling the discharge capacity of powder.
2. The metal powder recycling apparatus according to claim 1, wherein the sieving device (200) comprises an upper cover (210), a lower cover (220) and a screen assembly (230), the upper cover (210) is hermetically connected with the lower cover (220) and encloses a sieving chamber, the screen assembly (230) is disposed in the sieving chamber, and the screen assembly (230) divides the sieving chamber into an upper chamber and a lower chamber.
3. The metal powder recycling apparatus according to claim 2, wherein the sieving device (200) further comprises a vibrating member, and the vibrating member is vibrationally coupled to the screen assembly (230).
4. The metal powder recycling apparatus according to claim 3, wherein said vibrating member includes a driving end drivingly connected to said annular transmission member, and an annular transmission member conformably configured to said screen assembly (230), said annular transmission member in opposing contact with said screen assembly (230).
5. The metal powder recovery apparatus according to claim 2, wherein the vibration member is an ultrasonic vibrator.
6. The metal powder recycling apparatus according to claim 2, wherein the upper cover (210) is provided with at least one visible window (211), the visible window (211) being used to observe the internal condition of the sieving device (200).
7. The metal powder recycling apparatus according to claim 6, wherein the upper cover (210) has a mounting hole, the visible window (211) comprises a fixing member and a visible glass, the visible glass is mounted on the fixing member, and the fixing member is detachably connected to the mounting hole.
8. The metal powder recovery apparatus according to claim 7, wherein a seal ring is provided between the fixing member and the mounting hole, the seal ring being configured to seal a gap between the fixing member and the mounting hole.
9. The metal powder recycling apparatus according to claim 1, wherein the hopper (100), the sieving device (200) and the collecting device (300) are communicated with each other through a wear-resistant steel wire hose (600).
10. The metal powder recycling apparatus according to claim 1, wherein at least one of said hopper (100), said sieving device (200) and said collecting device (300) is provided with an oxygen content detector (700), said oxygen content detector (700) being adapted to detect the oxygen content inside the metal powder recycling apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890720.4A CN115319117A (en) | 2022-07-29 | 2022-07-29 | Metal powder recovery plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210890720.4A CN115319117A (en) | 2022-07-29 | 2022-07-29 | Metal powder recovery plant |
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| Publication Number | Publication Date |
|---|---|
| CN115319117A true CN115319117A (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210890720.4A Pending CN115319117A (en) | 2022-07-29 | 2022-07-29 | Metal powder recovery plant |
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| Country | Link |
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| CN (1) | CN115319117A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211489623U (en) * | 2019-12-31 | 2020-09-15 | 深圳市光韵达增材制造研究院 | Intelligent self-response device of powder sieving device |
| CN213032761U (en) * | 2019-12-25 | 2021-04-23 | 南京前知智能科技有限公司 | Dedicated automatic powder sieving device of 3D printing apparatus |
| EP3815799A1 (en) * | 2019-10-29 | 2021-05-05 | General Electric Company | Powder reclamation system for multiple metal powder processing devices |
| WO2022020883A1 (en) * | 2020-07-27 | 2022-02-03 | AmPro Innovations Pty Ltd | A processing machine for an additive manufacturing build assembly |
| CN216757138U (en) * | 2021-12-03 | 2022-06-17 | 山西沁新能源集团股份有限公司 | Fiber filtering device for screening in ceramic sand production |
-
2022
- 2022-07-29 CN CN202210890720.4A patent/CN115319117A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3815799A1 (en) * | 2019-10-29 | 2021-05-05 | General Electric Company | Powder reclamation system for multiple metal powder processing devices |
| CN213032761U (en) * | 2019-12-25 | 2021-04-23 | 南京前知智能科技有限公司 | Dedicated automatic powder sieving device of 3D printing apparatus |
| CN211489623U (en) * | 2019-12-31 | 2020-09-15 | 深圳市光韵达增材制造研究院 | Intelligent self-response device of powder sieving device |
| WO2022020883A1 (en) * | 2020-07-27 | 2022-02-03 | AmPro Innovations Pty Ltd | A processing machine for an additive manufacturing build assembly |
| CN216757138U (en) * | 2021-12-03 | 2022-06-17 | 山西沁新能源集团股份有限公司 | Fiber filtering device for screening in ceramic sand production |
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