CN113183467A - Air filtration system for 3D printer - Google Patents

Air filtration system for 3D printer Download PDF

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Publication number
CN113183467A
CN113183467A CN202110307863.3A CN202110307863A CN113183467A CN 113183467 A CN113183467 A CN 113183467A CN 202110307863 A CN202110307863 A CN 202110307863A CN 113183467 A CN113183467 A CN 113183467A
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wall
fixedly connected
filter cavity
electrolytic
cavity
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CN202110307863.3A
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Chinese (zh)
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CN113183467B (en
Inventor
喻文炜
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Dongguan Evstech 3d Technology Co ltd
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Individual
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30Auxiliary operations or equipment
    • B29C64/35Cleaning
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/017Combinations of electrostatic separation with other processes, not otherwise provided for
    • B03C3/0175Amassing particles by electric fields, e.g. agglomeration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE 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
    • B33Y40/00Auxiliary operations or equipment, e.g. for material handling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Biomedical Technology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Electrostatic Separation (AREA)

Abstract

The invention discloses an air filtering system for a 3D printer, which comprises a machine body, wherein a filter cavity is formed at the lower end of the machine body, the side wall of the machine body is fixedly connected with the inner wall of the filter cavity through an air inlet pipe, the inner wall of the filter cavity is fixedly connected with a plurality of adsorption mechanisms for adsorbing impurities in air along the horizontal direction, each adsorption mechanism comprises a plurality of dust collection conducting wires fixedly connected to the inner wall of the filter cavity, a semicircular groove is formed in the top of the inner part of the filter cavity, the inner wall of the semicircular groove is rotatably connected with a plurality of fixing rods through a rotating shaft, and the side wall of each fixing rod, far away from the rotating shaft, is fixedly connected with a wind cup. According to the invention, the wind cup rotates under the impact action of flowing waste gas, so that the wind cup made of a magnetic material continuously sweeps over the spiral coil, the spiral coil continuously cuts the magnetic induction line and generates induced current, and then current passes through the dust collection wire, so that an electromagnetic field is generated near the dust collection wire, and impurities such as dust in the waste gas are adsorbed, and the adsorption effect is good.

Description

Air filtration system for 3D printer
Technical Field
The invention relates to the technical field of 3D printers, in particular to an air filtering system for a 3D printer.
Background
3D prints to be a technique that can rapid prototyping, is called additive manufacturing again, and it is one kind and uses various metal material or plastic material to carry out direct molding processing equipment based on digital model file, and along with the continuous development of science and technology, the use of 3D printer is more and more extensive.
At present 3D printer adopts plastic material as raw and other materials when using more, make to add plastics and can produce more harmful waste gas, at present to the simple filtration of processing of these waste gases, can only filter its inside dust like this, can not carry out purification treatment to the harmful gas in the waste gas, make harmful gas still can discharge to the air in, cause air pollution, simultaneously on the filter screen for a long time when filtering impurity such as dust in the waste gas, the ventilation effect on the filter screen is relatively poor, and then the influence is to the filtration treatment of waste gas.
Based on this, the invention provides an air filtering system for a 3D printer.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides an air filtering system for a 3D printer.
In order to achieve the purpose, the invention adopts the following technical scheme:
an air filtering system for a 3D printer comprises a machine body, wherein the lower end of the machine body is provided with a filtering cavity, the side wall of the machine body is fixedly connected with the inner wall of the filter cavity through an air inlet pipe, the inner wall of the filter cavity is fixedly connected with a plurality of adsorption mechanisms for adsorbing impurities in the air along the horizontal direction, the adsorption mechanism comprises a plurality of dust-absorbing conducting wires fixedly connected with the inner wall of the filter cavity, the top part in the filter cavity is provided with a semicircular groove, the inner wall of the semicircular groove is rotationally connected with a plurality of fixed rods through a rotating shaft, the side wall of the plurality of fixed rods far away from the rotating shaft is fixedly connected with a wind cup, a power supply mechanism for supplying power to a plurality of dust collection wires is arranged in the semicircular groove, the inner wall of the machine body is connected with a magnetic plate in a sealing and sliding way, a purification cavity is formed between the side wall of the magnetic plate and the inner wall of the filtering cavity, the side wall of the magnetic plate is connected with a one-way air suction pipe, and the top of the purification cavity is fixedly connected with the side wall of the machine body through a one-way air outlet pipe.
Preferably, the power supply mechanism comprises spiral coils embedded in the inner wall of the semicircular groove, one of the cups is made of a magnetic material, and two adjacent dust collection conducting wires are respectively in coupling connection with the spiral coils and are in coupling connection with the spiral coils through an inverter.
Preferably, be equipped with the purifying liquid in the purification intracavity, purify two electrolysis pipes of intracavity top fixedly connected with, purify intracavity bottom symmetry fixedly connected with anodal electrolysis stick and negative pole electrolysis stick, anodal electrolysis stick and negative pole electrolysis stick all extend to the setting in the electrolysis pipe, anodal electrolysis stick and negative pole electrolysis stick are connected with the positive negative pole coupling of spiral coil respectively.
Preferably, the top of the electrolytic tube corresponding to the anode electrolytic rod is connected with the inner wall of the one-way air outlet tube through an exhaust tube, and the top of the electrolytic tube corresponding to the cathode electrolytic rod is connected with the outside through an exhaust tube.
Preferably, the filter chamber is provided with a dust collecting groove below the dust collecting leads, and the side wall of the magnetic plate is elastically connected with the side wall of the electrolysis tube through a spring.
Preferably, the inner wall of the magnetic plate far away from the purification cavity is fixedly connected with a circular ring, the inner top and the inner bottom of the circular ring are fixedly connected with a plurality of discharge needles which are just opposite to each other, and the positive and negative poles of the spiral coil are respectively coupled with the plurality of discharge needles which are positioned on the inner top and the inner bottom of the circular ring.
The invention has the following beneficial effects:
1. by arranging the dust collection conducting wire, the semicircular groove, the wind cup and the spiral coil, after waste gas in the machine body enters the filtering cavity, the wind cup rotates under the impact action of the flowing waste gas, so that the wind cup made of magnetic materials continuously sweeps over the spiral coil, the spiral coil continuously cuts magnetic induction lines and generates induced current, and then current passes through the dust collection conducting wire, an electromagnetic field is generated near the dust collection conducting wire, so that impurities such as dust in the waste gas are adsorbed, and the adsorption effect is good;
2. because one dust absorption lead wire in two adjacent dust absorption lead wires is coupled and connected with the spiral coil through the inverter, the current direction on the dust absorption lead wire is periodically changed, so that the dust absorption lead wire and the current direction on the dust absorption lead wire adjacent to the dust absorption lead wire are periodically the same and opposite, and the ampere rule shows that the two dust absorption lead wires are periodically attracted and repelled, so that the dust absorption lead wire continuously shakes, dust on the dust absorption lead wire is frequently shaken off, a filter screen is not used for filtering, and the filtering effect of the dust absorption lead wire on impurities such as dust is improved;
3. by arranging the magnetic plate, the purification cavity, the one-way air suction pipe and the one-way air outlet pipe, the air cup made of magnetic materials continuously sweeps over the magnetic plate due to the rotation of the air cup, so that the magnetic plate slides back and forth on the inner wall of the filter cavity under the action of the magnetic attraction of the air cup and the elastic force of the spring, the filtered waste gas is pumped into the purification cavity, and the purification liquid is used for purifying the waste gas in the purification cavity;
4. by arranging the electrolytic tube, the anode electrolytic rod and the cathode electrolytic rod, and the anode and the cathode of the spiral coil respectively supply power to the anode electrolytic rod and the cathode electrolytic rod, the anode electrolytic rod and the cathode electrolytic rod electrolyze water, the concentration of the purifying liquid is improved, and the phenomenon that the purifying liquid reduces the concentration of the waste gas after purifying the waste gas for a long time is avoided, so that the purifying efficiency of the waste gas is influenced;
5. through setting up ring and discharge needle, the induced-current that spiral coil produced gathers respectively on two discharge needles for two discharge needle point are most advanced to gather a large amount of positive and negative charges respectively, can know by the point discharge phenomenon, and when the electric charge of the most advanced gathering of discharge needle reached the certain degree, just can the discharge current, and then carry out the ionization to waste gas, improve the purification degree to harmful gas in the waste gas.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
In the figure: 1 machine body, 2 filter chambers, 21 purification chambers, 3 air inlet pipes, 4 dust collection conducting wires, 5 semicircular grooves, 6 fixing rods, 7 wind cups, 8 magnetic plates, 9 one-way air outlet pipes, 10 one-way air inlet pipes, 11 electrolytic pipes, 12 anode electrolytic rods, 13 cathode electrolytic rods, 14 spiral coils, 15 dust collection grooves, 16 circular rings and 17 discharge needles.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example one
Referring to fig. 1, an air filtration system for 3D printer, including organism 1, filter chamber 2 has been seted up to 1 lower extreme of organism, 1 lateral wall of organism passes through intake pipe 3 and 2 inner wall fixed connection of filter chamber, 2 inner walls of filter chamber carry out absorbent adsorption apparatus along a plurality of to impurity in the air of its horizontal direction fixedly connected with, adsorption apparatus includes a plurality of dust absorption wires 4 of fixed connection at 2 inner walls of filter chamber, dust collecting tank 15 has been seted up to filter chamber 2 below that is located a plurality of dust absorption wires 4.
Furthermore, when a plurality of dust collection wires 4 pass through current, an electromagnetic field is generated around the dust collection wires 4, so that impurities such as dust in waste gas can be adsorbed, and a filter screen is not required for filtering.
Half slot 5 has been seted up at the top in filter chamber 2, 5 inner walls in half slot rotate through the pivot and are connected with a plurality of dead levers 6, the lateral wall fixedly connected with wind cup 7 of pivot is kept away from to a plurality of dead levers 6, install the power supply mechanism who supplies power to a plurality of dust absorption wires 4 in the half slot 5, 1 inner wall sealing sliding connection of organism has magnetic sheet 8, constitute between 8 lateral walls of magnetic sheet and the 2 inner walls of filter chamber and purify the chamber 21, 8 lateral walls of magnetic sheet are connected with one-way breathing pipe 10, purify the interior top of chamber 21 and pass through one-way outlet duct 9 and 1 lateral wall fixed connection of organism.
It should be noted that the one-way air suction pipe 10 allows only air to enter the purifying chamber 21 from the filter chamber 2, and the one-way air outlet pipe 9 allows only air to flow out from the purifying chamber 21.
The power supply mechanism comprises spiral coils 14 embedded in the inner wall of the semicircular groove 5, one of the wind cups 7 is made of magnetic materials, and two adjacent dust collection conducting wires 4 are respectively coupled with the spiral coils 14 and the spiral coils 14 through an inverter.
Purifying the intracavity 21 and being equipped with the purifying liquid, purifying two electrolysis pipes 11 of top fixedly connected with in the intracavity 21, 8 lateral walls of magnetic sheet pass through spring and 11 lateral walls elastic connection of electrolysis pipe, purify the intracavity 21 bottom symmetry fixedly connected with anodal electrolysis stick 12 and negative pole electrolysis stick 13, anodal electrolysis stick 12 and negative pole electrolysis stick 13 all extend to the electrolysis intraductal setting of setting, anodal electrolysis stick 12 and negative pole electrolysis stick 13 respectively with 14 positive negative pole coupling connections of spiral coil.
The inner top of the electrolytic tube 11 corresponding to the anode electrolytic rod 12 is connected with the inner wall of the one-way air outlet tube 9 through an air outlet tube, and the inner top of the electrolytic tube 11 corresponding to the cathode electrolytic rod 13 is connected with the outside through an air outlet tube.
In this embodiment, the exhaust gas generated in the machine body 1 enters the filter cavity 2 through the air inlet pipe 3, so that the exhaust gas flows in the filter cavity 2, the wind cup 7 rotates under the impact action of the exhaust gas, the wind cup 7 made of magnetic material continuously sweeps the spiral coil 14, the spiral coil 14 continuously cuts magnetic induction lines and generates induced current, further, current passes through the dust collection wire 4, so that an electromagnetic field is generated near the dust collection wire 4, and further, impurities such as dust in the exhaust gas are adsorbed, meanwhile, when the current generated on the spiral coil 14 supplies power to the dust collection wire 4 through the inverter, the current direction on the dust collection wire 4 is periodically changed, so that the current directions on the dust collection wire 4 and the adjacent dust collection wire 4 are periodically the same and opposite, which can be known from the ampere rule, at this time, the two dust collection wires 4 are periodically attracted and repelled, the dust collection conducting wire 4 is shaken continuously, dust on the dust collection conducting wire 4 is shaken off frequently, the dust falls into the dust collection groove 15, and only the dust in the dust collection groove 15 needs to be cleaned regularly;
when the wind cup 7 rotates, the wind cup 7 made of magnetic materials continuously grabs the magnetic plate 8, the magnetic plate 8 slides back and forth on the inner wall of the filter cavity 2 under the action of magnetic attraction of the wind cup 7 and elastic force of the spring, so that the space in the purification cavity 21 is continuously increased and reduced, the one-way air suction pipe 10 pumps the filtered waste gas into the purification cavity 21, the purified waste gas in the purification cavity 21 is purified by the purified liquid and then is discharged through the one-way air outlet pipe 9, meanwhile, induced current generated on the spiral coil 14 respectively supplies power to the anode electrolytic rod 12 and the cathode electrolytic rod 13, so that the anode electrolytic rod 12 and the cathode electrolytic rod 13 electrolyze water, oxygen generated by the anode electrolytic rod 12 is discharged through the one-way air outlet pipe 9, hydrogen generated at the cathode electrolytic rod 13 is discharged to the outdoor, the concentration of the purified liquid can be improved, and the concentration of the purified liquid is prevented from being reduced after the waste gas is purified for a long time, thereby affecting the purification efficiency of the exhaust gas.
Example two
Referring to fig. 2, different from the first embodiment, a circular ring 16 is fixedly connected to the inner wall of the magnetic plate 8 away from the purification chamber 21, a plurality of discharge needles 17 arranged opposite to each other are fixedly connected to the inner top and the inner bottom of the circular ring 16, and the positive and negative poles of the spiral coil 14 are respectively coupled to the plurality of discharge needles 17 arranged on the inner top and the inner bottom of the circular ring 16.
In this embodiment, the induced current generated by the spiral coil 14 is accumulated on the plurality of discharge needles 17 located at the inner top and the inner bottom of the circular ring 16, so that the tips of the plurality of discharge needles 17 at the two positions accumulate a large amount of positive and negative charges, respectively, and the tip discharge phenomenon shows that when the charges accumulated at the tips of the discharge needles 17 reach a certain degree, the current can be released, so that the waste gas flowing in the circular ring 16 can be ionized, and the purification degree of harmful gas in the waste gas can be improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (6)

1. An air filtering system for a 3D printer comprises a machine body (1) and is characterized in that a filter cavity (2) is formed in the lower end of the machine body (1), the side wall of the machine body (1) is fixedly connected with the inner wall of the filter cavity (2) through an air inlet pipe (3), a plurality of adsorption mechanisms for adsorbing impurities in air are fixedly connected to the inner wall of the filter cavity (2) along the horizontal direction of the inner wall of the filter cavity, each adsorption mechanism comprises a plurality of dust absorption wires (4) fixedly connected to the inner wall of the filter cavity (2), a semicircular groove (5) is formed in the top of the inner portion of the filter cavity (2), a plurality of fixing rods (6) are rotatably connected to the inner wall of the semicircular groove (5) through a rotating shaft, air cups (7) are fixedly connected to the side wall of the fixing rods (6) far away from the rotating shaft, and a power supply mechanism for supplying power to the dust absorption wires (4) is installed in the semicircular groove (5), organism (1) inner wall sealing sliding connection has magnetic sheet (8), constitute between magnetic sheet (8) lateral wall and filter chamber (2) inner wall and purify chamber (21), magnetic sheet (8) lateral wall is connected with one-way breathing pipe (10), it passes through one-way outlet duct (9) and organism (1) lateral wall fixed connection to purify the interior top of chamber (21).
2. The air filtering system for the 3D printer is characterized in that the power supply mechanism comprises spiral coils (14) embedded in the inner wall of the semicircular groove (5), one of the wind cups (7) is made of a magnetic material, and two adjacent dust suction wires (4) are respectively coupled with the spiral coils (14) and the spiral coils (14) through an inverter.
3. The air filtering system for the 3D printer according to claim 2, wherein a purifying liquid is disposed in the purifying cavity (21), two electrolytic tubes (11) are fixedly connected to the top portion of the purifying cavity (21), a positive electrolytic rod (12) and a negative electrolytic rod (13) are symmetrically and fixedly connected to the bottom portion of the purifying cavity (21), the positive electrolytic rod (12) and the negative electrolytic rod (13) both extend into the electrolytic tubes (11), and the positive electrolytic rod (12) and the negative electrolytic rod (13) are respectively connected with the positive electrode and the negative electrode of the spiral coil (14) in a coupled manner.
4. The air filtering system for the 3D printer according to claim 3, wherein the top of the electrolytic tube (11) corresponding to the positive electrode electrolytic rod (12) is connected with the inner wall of the one-way air outlet pipe (9) through an exhaust pipe, and the top of the electrolytic tube (11) corresponding to the negative electrode electrolytic rod (13) is connected with the outside through an exhaust pipe.
5. The air filtering system for the 3D printer according to claim 3, wherein the filtering cavity (2) is provided with a dust collecting groove (15) below the dust collecting wires (4), and the side wall of the magnetic plate (8) is elastically connected with the side wall of the electrolysis tube (11) through a spring.
6. The air filtering system for the 3D printer is characterized in that a circular ring (16) is fixedly connected to the inner wall, away from the purifying cavity (21), of the magnetic plate (8), a plurality of discharge needles (17) which are arranged oppositely are fixedly connected to the inner top and the inner bottom of the circular ring (16), and the positive and negative poles of the spiral coil (14) are respectively coupled and connected with the plurality of discharge needles (17) which are arranged at the inner top and the inner bottom of the circular ring (16).
CN202110307863.3A 2021-03-23 2021-03-23 Air filtering system for 3D printer Active CN113183467B (en)

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CN202110307863.3A CN113183467B (en) 2021-03-23 2021-03-23 Air filtering system for 3D printer

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CN113183467B CN113183467B (en) 2023-06-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116116199A (en) * 2023-04-04 2023-05-16 山西鹏飞焦化绿色发展有限公司 Coking flue gas desulfurization dust removal device and use method thereof
CN116984633A (en) * 2023-09-25 2023-11-03 四川工程职业技术学院 Purging device for 3D printing

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Publication number Priority date Publication date Assignee Title
JP2000290705A (en) * 1999-04-06 2000-10-17 Mitsubishi Materials Corp Equipment and method for manufacturing porous metal sheet
CN102228760A (en) * 2011-06-29 2011-11-02 无锡光旭新材料科技有限公司 Permanent magnet filter stick and method for preparing permanent magnet material thereof
CN107042045A (en) * 2017-02-07 2017-08-15 安徽鹰龙工业设计有限公司 A kind of bidirectional air inlet type supercharging filter dirt electrostatic precipitator
CN110039783A (en) * 2019-04-29 2019-07-23 太原理工大学 A kind of air filter and filter method for 3D biometric print machine
CN111037921A (en) * 2019-12-09 2020-04-21 安徽卓锐三维科技有限公司 Powder cleaning device of laser sintering equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000290705A (en) * 1999-04-06 2000-10-17 Mitsubishi Materials Corp Equipment and method for manufacturing porous metal sheet
CN102228760A (en) * 2011-06-29 2011-11-02 无锡光旭新材料科技有限公司 Permanent magnet filter stick and method for preparing permanent magnet material thereof
CN107042045A (en) * 2017-02-07 2017-08-15 安徽鹰龙工业设计有限公司 A kind of bidirectional air inlet type supercharging filter dirt electrostatic precipitator
CN110039783A (en) * 2019-04-29 2019-07-23 太原理工大学 A kind of air filter and filter method for 3D biometric print machine
CN111037921A (en) * 2019-12-09 2020-04-21 安徽卓锐三维科技有限公司 Powder cleaning device of laser sintering equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116116199A (en) * 2023-04-04 2023-05-16 山西鹏飞焦化绿色发展有限公司 Coking flue gas desulfurization dust removal device and use method thereof
CN116984633A (en) * 2023-09-25 2023-11-03 四川工程职业技术学院 Purging device for 3D printing
CN116984633B (en) * 2023-09-25 2023-12-22 四川工程职业技术学院 Purging device for 3D printing

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