CN113274856A - Space capsule 3D printing device facing microgravity environment - Google Patents
Space capsule 3D printing device facing microgravity environment Download PDFInfo
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- CN113274856A CN113274856A CN202110430050.3A CN202110430050A CN113274856A CN 113274856 A CN113274856 A CN 113274856A CN 202110430050 A CN202110430050 A CN 202110430050A CN 113274856 A CN113274856 A CN 113274856A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/18—Deposition of organic active material using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/20—Changing the shape of the active layer in the devices, e.g. patterning
- H10K71/231—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers
- H10K71/236—Changing the shape of the active layer in the devices, e.g. patterning by etching of existing layers using printing techniques, e.g. applying the etch liquid using an ink jet printer
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Abstract
The application discloses 3D printing device in space capsule towards microgravity environment relates to 3D and prints technical field. Not only can realize printing the high quality of battery patterning structure and large tracts of land functional layer, but also can handle the waste gas that produces to the printing in-process, avoid polluting the space environment. The 3D printing device comprises a closed bin, an electrofluid 3D printing device, a negative pressure system and a waste gas treatment device; the electrofluid 3D printing device is arranged in the closed bin; the negative pressure system can suck gas outside the closed bin and guide waste gas discharged by the electrofluid 3D printing device to the waste gas treatment device; the exhaust gas treatment device can treat the exhaust gas into pollution-free gas. The application is used for promoting 3D printing device's performance.
Description
Technical Field
The application relates to the technical field of 3D printing, in particular to a space capsule 3D printing device facing to a microgravity environment.
Background
At present, most of articles required by the international space station need to be processed and finished on the ground and then are delivered by a carrier rocket and an airship. The disadvantages of this method are: 1. the volume of the transported object is limited by the size of the fairing; 2. the transportation period is long; 3. the transportation cost is high. In order to solve the technical problems, space manufacturing is carried out at the same time. Space manufacturing not only can directly utilize space resources such as solar energy, raw materials and the like to realize self-maintenance, but also the space microgravity environment of space manufacturing enables in-situ manufacturing and assembly of oversized components to be possible.
The 3D printing technique is also called additive manufacturing technique, which is a method of directly, rapidly, and accurately manufacturing a part by layer-by-layer superimposition using laser, electron beam, or other means. The technology can realize the personalized and customized production of products, has outstanding advantages in the aspects of cost, efficiency and product quality, and is a great leap of the manufacturing technology. In the future, parts are manufactured in the earth outer space by using a 3D printing technology according to needs, so that the dependence of space exploration on the earth can be gradually eliminated, and remarkable economic and social benefits are brought.
Solar energy is used as the most easily-utilized and most extensive energy in the space station, and the space 3D printing of the solar cell can effectively solve the energy problem to be solved urgently in the space. However, in several common additive modes, fused deposition 3D printing can only print wires, which cannot meet the material requirements of solar cell printing and does not meet the accuracy; in the ink-jet printing process, liquid drops are easily interfered by external force in the microgravity flying process to generate splashing of the liquid drops, so that equipment is damaged; for surface exposure 3D printing, the material, layer thickness cannot meet the requirements and the printable area is limited. Therefore, it is of great significance to develop a 3D printing device for printing solar cells in a space capsule.
Disclosure of Invention
The embodiment of the application provides a 3D printing device in space capsule towards microgravity environment, not only can realize printing the high quality of battery patterning structure and large tracts of land functional layer, but also can handle the waste gas that produces in the printing process, avoids polluting the space environment.
In order to achieve the above object, an embodiment of the present application provides a 3D printing device in a space capsule facing a microgravity environment, including a sealed cabin, an electrofluid 3D printing device, a negative pressure system, and a waste gas treatment device; the electrofluid 3D printing device is arranged in the closed bin; the negative pressure system can suck gas outside the closed bin and guide waste gas discharged by the electrofluid 3D printing device to the waste gas treatment device; the exhaust gas treatment device can treat the exhaust gas into pollution-free gas.
Further, the electrofluid 3D printing device comprises a near-field direct-write 3D printing device or an electrostatic atomization device.
Further, the near-field direct-writing 3D printing device comprises a liquid supply device, a conductive nozzle, a first substrate, a first triaxial moving platform and a first high-voltage power supply; the liquid supply device is communicated with the conductive nozzle and provides printing solution for the conductive nozzle; the first three-axis moving platform can drive the conductive nozzle to move along the Z axis and drive the first substrate to move along the X axis or the Y axis; the first high-voltage power supply is electrically connected with the conductive nozzle; the first triaxial mobile platform is grounded.
Further, the first triaxial moving platform comprises a first Z-axis moving mechanism and a first XY-axis moving platform, the conductive nozzle is arranged on the first Z-axis moving mechanism, and the first substrate is arranged on the first XY-axis moving platform.
Further, the electrostatic atomization device comprises an electrostatic spray head, a second three-axis moving platform, a second substrate, a second high-voltage power supply, an annular electrode, an electrostatic shielding plate and a third high-voltage power supply; the second three-axis moving platform can drive the electrostatic nozzle to move along the Z axis and drive the second substrate to move along the X axis or the Y axis, the electrostatic shielding plate and the annular electrode are both positioned between the electrostatic nozzle and the second substrate, and the electrostatic shielding plate is arranged close to the electrostatic nozzle; the electrostatic sprayer is electrically connected with the anode of the second high-voltage power supply; the annular electrode is electrically connected with the anode of the third high-voltage power supply, and the second triaxial moving platform and the electrostatic shielding plate are both grounded.
Further, the second triaxial moving platform comprises a second Z-axis moving mechanism and a second XY-axis moving platform, the electrostatic spray head is arranged on the second Z-axis moving mechanism, and the second substrate is arranged on the second XY-axis moving platform.
Further, the waste gas treatment device comprises a reaction box, a first hydraulic pump and a gas-liquid separator; the reaction box is used for containing an organic solvent, a first inlet of the reaction box is communicated with an outlet of the closed bin, an outlet of the reaction box is communicated with an inlet of the first hydraulic pump, an outlet of the first hydraulic pump is communicated with an inlet of the gas-liquid separator, an exhaust outlet of the gas-liquid separator is communicated with the outside of the space capsule, and a liquid discharge outlet of the gas-liquid separator is communicated with a second inlet of the reaction box.
Further, a second hydraulic pump is arranged between the exhaust outlet of the gas-liquid separator and the second inlet of the reaction box.
Further, the negative pressure system comprises an air inlet pipe, a negative pressure fan and an air outlet pipe; the inlet of the air inlet pipe is communicated with the outside of the closed bin, and the outlet of the air inlet pipe is communicated with the inlet of the closed bin; the air inlet pipe is provided with a first switch valve; the negative pressure fan is arranged at the outlet of the closed bin, the inlet of the exhaust pipe is communicated with the outlet of the negative pressure fan, and the outlet of the exhaust pipe is communicated with the inlet of the waste gas treatment device; and a second switch valve is arranged on the exhaust pipe.
Furthermore, the closed bin comprises an anti-corrosion layer, a noise reduction layer, a heat insulation layer, an electromagnetic shielding layer and a shell which are sequentially arranged from inside to outside.
Compared with the prior art, the application has the following beneficial effects:
1. according to the embodiment of the application, the sealed printing environment is formed by constructing the sealed bin, the printing is performed through the electrofluid 3D printing device, under the constraint of an external electric field, liquid drops cannot splash, and the high-quality printing of a battery patterning structure and a large-area functional layer is achieved.
2. The waste gas that produces in this application embodiment will seal the storehouse in through utilizing negative pressure system and print the in-process is discharged to utilize exhaust treatment device to handle waste gas and discharge pollution-free gas, ensure can not pollute in the space capsule and the space environment.
3. The present example supplies a solution to the end of a conductive nozzle to form an initial hanging drop. A high-voltage electric field is applied between the conductive nozzle and the first substrate, and the suspended drop is subjected to the combined action of all the surface forces to form a Taylor cone. When the electric field force continues to increase, the liquid drop is ejected from the tip of the taylor cone to form a jet flow. The shape of the jet flow is changed into different shapes under the influence of solution parameters, process parameters and structure parameters, so that the near-field direct writing and electrostatic atomization processes are realized. Therefore, the problem that the liquid drops are suspended in the printing process and cannot be accurately printed on the substrate to form the pattern under the condition of microgravity in the space can be effectively solved.
4. The embodiment of the application adds the annular electrode which is coaxial with the electrostatic spray head and made of conductive materials such as copper or silver and the like below the electrostatic spray head, so that the annular electrode is connected with a positive high-voltage power supply and is used for assisting in clicking, a constraint electric field is generated to carry out space constraint on charged droplets to prevent pollution caused by droplet splashing, and meanwhile, the electrostatic repulsion and convergence effects on a diffusion medium mist field can be realized, the problem that the density distribution of droplets from the center to the edge of the original mist field is uneven can be effectively solved, the density of the droplets in the mist field is improved, and the deposition efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a 3D printing device in a space capsule facing a microgravity environment according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a capsule in a 3D printing device in a space capsule facing a microgravity environment according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a near-field direct-writing 3D printing device in a space capsule facing a microgravity environment according to an embodiment of the present application;
FIG. 4 is an enlarged view of a portion of FIG. 3 at I;
fig. 5 is a schematic structural diagram of an electrostatic atomization device in a 3D printing device in a space capsule facing a microgravity environment according to another embodiment of the present application;
fig. 6 is an electrostatic atomization simulation diagram of a 3D printing device in a space capsule facing a microgravity environment according to another embodiment of the present application;
fig. 7 is a partial enlarged view of the point ii in fig. 6.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1, the embodiment of the present application provides a space capsule 3D printing device facing a microgravity environment, which includes a sealed cabin 1, an electrofluid 3D printing device 7, a negative pressure system 2, and a waste gas treatment device 5. The electrofluid 3D printing apparatus 7 is disposed within the hermetic chamber 1. The negative pressure system 2 can suck the gas outside the closed cabin 1 and guide the waste gas discharged by the electrofluid 3D printing device 7 to the waste gas treatment device 5. The exhaust gas treatment device 5 can treat the exhaust gas into pollution-free gas and discharge the gas outside the space capsule.
From this, sealed printing environment is found through airtight storehouse 1 to print through electrofluid 3D printing device 7, under the restraint of additional electric field, make the liquid drop can't splash, thereby realize printing the high quality of battery patterning structure and large tracts of land functional layer, through the waste gas discharge of negative pressure system 2 in with airtight storehouse 1 printing in-process production, and utilize exhaust treatment device 5 to handle the pollution-free gas of discharge with waste gas, ensure can not pollute the environment in the space capsule and the space.
With continued reference to fig. 1, in some embodiments, the negative pressure system 2 includes an intake duct 21, a negative pressure blower 22, and an exhaust duct 23. The inlet of the air inlet pipe 21 is communicated with the outside of the closed bin 1, and the outlet of the air inlet pipe 21 is communicated with the inlet of the closed bin 1. The air inlet pipe 21 is provided with a first switch valve 24, and the negative pressure fan 22 is arranged at the outlet of the closed bin 1, and the outlet faces the outside of the closed bin 1. The inlet of the exhaust pipe 23 is communicated with the outlet of the negative pressure fan 22, the outlet of the exhaust pipe 23 is communicated with the inlet of the exhaust gas treatment device 5, and the exhaust pipe 23 is provided with a second switch valve 25. Specifically, the first and second switching valves 24 and 25 may be ball valves.
Before the electrofluid 3D printing is carried out, the closed cabin 1 is closed, and then the first switch valve 24, the negative pressure fan 22 and the second switch valve 25 are closed simultaneously, so that the closed cabin 1 is not replaced by gas with the outside. After 3D prints and ends, open second ooff valve 25 and negative-pressure air fan 22 earlier for form the negative pressure in airtight storehouse 1, then open first ooff valve 24, because the atmospheric pressure is higher than the atmospheric pressure in airtight storehouse 1 in the space capsule, make the interior fresh air of space capsule pass through intake pipe 21 and impress in airtight storehouse 1, thereby can continuously pass through blast pipe 23 with the waste gas that the printing in-process produced and discharge, and fresh air can mend in airtight storehouse 1. After the gas in the closed chamber 1 is exhausted, the first on-off valve 24, the negative pressure fan 5 and the second on-off valve 25 are closed.
Negative pressure system 2 in the embodiment of this application makes the harmful gas who produces in airtight storehouse 1 get rid of from fixed gas vent through negative-pressure air blower 22 to make airtight storehouse 1 internal gas pressure be less than airtight storehouse external gas pressure, therefore, airtight storehouse 1 outer fresh air flow advances airtight storehouse 1 in, thereby make the gas that the 3D printing in-process produced can discharge fixed place and then handle, the effectual problem of having solved space 3D printing in-process waste gas and can't discharging.
Referring to fig. 2, in some embodiments, the closed bin 1 includes an anti-corrosion layer 11, a noise reduction layer 12, an insulation layer 13, an electromagnetic shielding layer 14, and an outer shell 15, which are sequentially disposed from inside to outside. The anti-corrosion layer 11 can prevent the gas generated by the electrofluid 3D printing device 7 from corroding the wall surface of the sealed cabin 1. The noise reduction layer 12 can eliminate or reduce noise generated by the printing process. The insulating layer 13 can keep the temperature inside the closed chamber 1 constant to facilitate printing. The electromagnetic shielding layer 14 can shield external electromagnetic interference. The casing 14 can ensure the structural strength of the closed silo 1.
Referring to fig. 3 and 4, in some embodiments, the electrofluidic 3D printing device 7 employs a near-field direct-write 3D printing device 3. The near-field direct-writing 3D printing device 3 includes a liquid supply device 31, a conductive nozzle 32, a first substrate 33, a first triaxial moving platform 34, and a first high-voltage power supply 35. The liquid supply device 31 communicates with the conductive nozzle 32 and supplies the conductive nozzle 32 with the perovskite solution 6. The first three-axis moving platform 34 can drive the conductive nozzle 32 to move up and down along the Z-axis and drive the first substrate 33 to move horizontally along the X-axis or the Y-axis. The first high voltage power supply 35 is electrically connected to the conductive nozzle 32, and the first three-axis moving platform 34 is grounded.
Specifically, the first triaxial moving stage 34 includes a first Z-axis moving mechanism 341 and a first XY-axis moving stage 342, the conductive nozzle 32 is disposed on the first Z-axis moving mechanism 341, and the first substrate 33 is disposed on the first XY-axis moving stage 342.
In 3D printing, the first high voltage power source 35 is turned on so that there is an electric field between the first substrate 33 and the conductive nozzle 32. The 3D printing path and the liquid outlet speed of the micro-injector are planned through a computer, the injector is pushed to move towards the direction A by the aid of the liquid supply device 31 through the micro-injection pump, the perovskite solution 6 is extruded to the conductive nozzle 32, and the droplets of the perovskite solution 6 are charged by the aid of the first high-voltage power supply 35. The liquid drop is subjected to the synergistic action of the electric field force and the surface tension to form a Taylor cone, so that the liquid drop is extruded from the conductive nozzle 32 to be written on the first substrate 33 to draw the solar cell. And planning a printing path of the 3D printing platform by using a computer to realize patterned printing of the perovskite solar cell.
Referring to fig. 5, in some embodiments, the electrostatic atomization device 4 includes an electrostatic spray head 41, a second three-axis moving stage 42, a second substrate 43, a second high voltage power supply 44, a ring electrode 45, a third high voltage power supply 46, and an electrostatic shield plate 47. The second three-axis moving platform 42 can drive the electrostatic nozzle 41 to move up and down along the Z-axis and drive the second substrate 43 to move horizontally along the X-axis or the Y-axis. The electrostatic shielding plate 47 and the annular electrode 45 are both located between the electrostatic nozzle 41 and the second substrate 43, and the electrostatic shielding plate 47 is disposed close to the electrostatic nozzle 41, that is, the electrostatic shielding plate 47 is located between the electrostatic nozzle 41 and the annular electrode 45, and the annular electrode 45 is located between the electrostatic shielding plate 47 and the second substrate 43. The electrostatic nozzle 41 is electrically connected to the positive electrode of the second high-voltage power supply 44, the annular electrode 45 is electrically connected to the positive electrode of the third high-voltage power supply 46, and both the second triaxial moving platform 42 and the electrostatic shield plate 47 are grounded.
Specifically, the second three-axis moving stage 42 includes a second Z-axis moving mechanism 421 and a second XY-axis moving stage 422, the electrostatic head 41 is disposed on the second Z-axis moving mechanism 421, and the second substrate 43 is disposed on the second XY-axis moving stage 422.
When 3D printing is performed, the second high voltage power supply 44 is turned on so that an electric field is present between the ring electrode 45 and the electrostatic head 41. Through setting extrusion solution pressure and a 3D printing path, the perovskite solution 6 is extruded into the electrostatic spray head 41, so that liquid drops are charged, an annular electrode 45 which is coaxial with the spray head and made of conductive materials such as copper or silver is additionally arranged under the electrostatic spray head 41, the annular electrode 45 is connected with a third high-voltage power supply 46, the third high-voltage power supply 46 can apply positive voltage of hundreds of volts, a constraint electric field is generated to carry out space constraint on charged micro-drops, and pollution caused by splashing of the liquid drops is prevented. The electrostatic shielding plate 47 can isolate the atomizing electric field in the upper half portion from the contracting electric field in the lower half portion, so that the atomizing electric field and the contracting electric field do not affect each other, and the annular electrode 45 is laid for effective use. The fine charged droplets are attracted to the second substrate 43 by the force of the electric field, thereby realizing printing of the functional layer of the solar cell.
Referring to fig. 6 and 7, in some examples, the electrostatic atomization process is simulated using COMSOL simulation software, and the simulation model includes a simulated electrostatic spray head 61, a simulated metal electrode ring 62, a simulated electrostatic shield 63, and a simulated ring electrode 64. The simulation range is one-half section of the electric atomization fog field, the electric field is calculated according to a three-dimensional model, and the motion of the particles is carried out in the section. The simulated electrostatic nozzle 61 applies a positive high voltage of 3000V, the simulated metal electrode ring 62 is grounded, the simulated electrostatic shielding plate 63 is grounded, and the simulated annular electrode 64 applies a positive voltage of 100V. The simulation result shows that the confinement electric field generated under the action of the simulation annular electrode 64 performs space confinement on the charged droplets, so that the outward diffusion and the downward diffusion of the charged droplets are changed into vertical downward diffusion, and the pollution caused by the splashing of the droplets is prevented.
Referring to fig. 1, in some embodiments, the exhaust gas treatment device 5 includes a reaction tank 51, a first hydraulic pump 52, and a gas-liquid separator 53. The reaction tank 51 is used for containing an organic solvent, a first inlet of the reaction tank 51 is communicated with an outlet of the closed bin 1, and an outlet of the reaction tank 51 is communicated with an inlet of the first hydraulic pump 52. An outlet of the first hydraulic pump 52 is communicated with an inlet of the gas-liquid separator 53, an exhaust outlet 531 of the gas-liquid separator 53 is communicated with the outside of the capsule, and a drain outlet 532 of the gas-liquid separator 53 is communicated with a second inlet of the reaction tank 51.
In some embodiments, in order to speed up the circulation, a second hydraulic pump 54 is provided between the exhaust outlet 532 of the gas-liquid separator 53 and the second inlet of the reaction tank 51.
After 3D printing is finished, waste gas discharged from the closed bin 1 enters a reaction box 51 containing an organic solvent, the waste gas and the organic solvent are reacted to form water and carbon dioxide by using a chemical reaction, then a gas-liquid mixture after the reaction is pressed into a gas-liquid separator 53 through a first hydraulic pump 52, liquid and gas are separated by using a centrifugal effect, and the separated carbon dioxide and water vapor are discharged out of the space capsule through a gas outlet 531. The separated liquid enters the reaction tank 51 through the drainage outlet 532 and the second hydraulic pump 54 for recycling. And after the waste gas treatment is finished, opening a door body of the closed bin 1, and taking out the printed workpiece.
The above is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A3D printing device in a space capsule facing a microgravity environment is characterized in that,
the device comprises a closed bin, an electrofluid 3D printing device, a negative pressure system and a waste gas treatment device;
the electrofluid 3D printing device is arranged in the closed bin;
the negative pressure system can suck gas outside the closed bin and guide waste gas discharged by the electrofluid 3D printing device to the waste gas treatment device;
the exhaust gas treatment device can treat the exhaust gas into pollution-free gas.
2. The microgravity environment-oriented in-space-capsule 3D printing device according to claim 1, wherein the electrofluid 3D printing device comprises a near-field direct-write 3D printing device or an electrostatic atomization device.
3. The microgravity environment-oriented in-space capsule 3D printing device according to claim 2,
the near-field direct-writing 3D printing device comprises a liquid supply device, a conductive nozzle, a first substrate, a first three-axis mobile platform and a first high-voltage power supply;
the liquid supply device is communicated with the conductive nozzle and provides printing solution for the conductive nozzle;
the first three-axis moving platform can drive the conductive nozzle to move along the Z axis and drive the first substrate to move along the X axis or the Y axis;
the first high-voltage power supply is electrically connected with the conductive nozzle; the first triaxial mobile platform is grounded.
4. A device in a space capsule 3D printing facing a microgravity environment according to claim 3,
the first triaxial moving platform comprises a first Z-axis moving mechanism and a first XY-axis moving platform, the conductive nozzle is arranged on the first Z-axis moving mechanism, and the first substrate is arranged on the first XY-axis moving platform.
5. The microgravity environment-oriented in-space capsule 3D printing device according to claim 2,
the electrostatic atomization device comprises an electrostatic spray head, a second three-axis moving platform, a second substrate, a second high-voltage power supply, an annular electrode, an electrostatic shielding plate and a third high-voltage power supply;
the second three-axis moving platform can drive the electrostatic nozzle to move along the Z axis and drive the second substrate to move along the X axis or the Y axis, the electrostatic shielding plate and the annular electrode are both positioned between the electrostatic nozzle and the second substrate, and the electrostatic shielding plate is arranged close to the electrostatic nozzle;
the electrostatic sprayer is electrically connected with the anode of the second high-voltage power supply;
the annular electrode is electrically connected with the anode of the third high-voltage power supply, and the second triaxial moving platform and the electrostatic shielding plate are both grounded.
6. The microgravity environment-oriented in-space capsule 3D printing device according to claim 5,
the second three-axis moving platform comprises a second Z-axis moving mechanism and a second XY-axis moving platform, the electrostatic spray head is arranged on the second Z-axis moving mechanism, and the second substrate is arranged on the second XY-axis moving platform.
7. The microgravity environment-oriented in-space capsule 3D printing device according to claim 1,
the waste gas treatment device comprises a reaction box, a first hydraulic pump and a gas-liquid separator;
the reaction box is used for containing an organic solvent, a first inlet of the reaction box is communicated with an outlet of the closed bin, an outlet of the reaction box is communicated with an inlet of the first hydraulic pump, an outlet of the first hydraulic pump is communicated with an inlet of the gas-liquid separator, an exhaust outlet of the gas-liquid separator is communicated with the outside of the space capsule, and a liquid discharge outlet of the gas-liquid separator is communicated with a second inlet of the reaction box.
8. The microgravity environment-facing in-space capsule 3D printing device as recited in claim 7, wherein a second hydraulic pump is disposed between an exhaust outlet of the gas-liquid separator and the second inlet of the reaction tank.
9. The microgravity environment-oriented in-space capsule 3D printing device according to claim 1,
the negative pressure system comprises an air inlet pipe, a negative pressure fan and an air outlet pipe;
the inlet of the air inlet pipe is communicated with the outside of the closed bin, and the outlet of the air inlet pipe is communicated with the inlet of the closed bin; the air inlet pipe is provided with a first switch valve;
the negative pressure fan is arranged at the outlet of the closed bin, the inlet of the exhaust pipe is communicated with the outlet of the negative pressure fan, and the outlet of the exhaust pipe is communicated with the inlet of the waste gas treatment device; and a second switch valve is arranged on the exhaust pipe.
10. The microgravity environment-oriented 3D printing device in the space capsule as claimed in any one of claims 1 to 9, wherein the closed cabin comprises an anti-corrosion layer, a noise reduction layer, a heat preservation layer, an electromagnetic shielding layer and a shell which are arranged in sequence from inside to outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110430050.3A CN113274856B (en) | 2021-04-21 | 2021-04-21 | Space capsule 3D printing device facing microgravity environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110430050.3A CN113274856B (en) | 2021-04-21 | 2021-04-21 | Space capsule 3D printing device facing microgravity environment |
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| Publication Number | Publication Date |
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| CN113274856A true CN113274856A (en) | 2021-08-20 |
| CN113274856B CN113274856B (en) | 2022-08-05 |
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| CN114100939A (en) * | 2021-11-24 | 2022-03-01 | 中国电子科技集团公司第十八研究所 | Electronic spraying equipment and spraying method for preparing perovskite battery in space on-orbit |
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| CN113274856B (en) | 2022-08-05 |
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