CN205057063U - Be applied to 3D and print interior smoke and dust detection of pressurized cabin and clarification plant - Google Patents
Be applied to 3D and print interior smoke and dust detection of pressurized cabin and clarification plant Download PDFInfo
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- CN205057063U CN205057063U CN201520812703.4U CN201520812703U CN205057063U CN 205057063 U CN205057063 U CN 205057063U CN 201520812703 U CN201520812703 U CN 201520812703U CN 205057063 U CN205057063 U CN 205057063U
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Abstract
The utility model discloses a be applied to 3D and print interior smoke and dust detection of pressurized cabin and clarification plant, oxygen detection device, a controlling means of oxygen content in smoke concentration's cigarette dust content detection device, one was used for detecting the pressurized cabin in the gaseous gas circulation clean system that purifies of circulating, one were used for detecting the pressurized cabin in one is used for the pressurized cabin, keep gaseous pure degree in the pressurized cabin through continuous regulation smoke filter motor rotation number, controlling means constantly detects cigarette dust content detection device's signal and makes corresponding control command in addition, the signal, smoke filter motor rotation number grade and pressure differential signal transfer to the display first and the 2nd pressure sensor that detect cigarette dust content simultaneously. This equipment can improve the forming stability and the part quality of metal 3D printing apparatus greatly, has guaranteed the safe and reliable of course of working.
Description
Technical field
The utility model relates to deposite metal, selective laser 3D and prints machine-shaping device, particularly relates to one and is applied to flue dust detection and cleaning equipment in 3D printing sealed compartment.
Background technology
In precinct laser fusion machine-shaping process, particularly use powder as the selective laser fusion process of moulding material, as metal dust.To in the process of metal dust after Laser Focusing, due to the disturbance of air-flow, laser-impact and power spreading device, sealed compartment can produce volume of smoke.If cleaned out by flue dust not in time, volume of smoke is on the one hand attached on lens, directly weakens laser on the other hand and is irradiated to ability in forming surface, thus affect the absorption of each layer metal powder surface for laser energy.Volume of smoke is gathered in sealed compartment the observation of the personnel that have a strong impact on to experiment process in addition, and flue dust is attached to sealed compartment inwall for a long time and will greatly reduces service life and the sealing of sealed compartment.And dissipation flue dust out brings significant damage to environment and personnel health.
The shaping needs of metal SLM complete deposite metal dusty material, metal material contacts with oxygen and is oxidized, even can burn (as pure titanium powder), when having the elements such as C, Si, Mn, Ti, Ca in material, the combination of they and oxygen is more easily formed stablizes impurity phase.
By carrying out forming experiment respectively under nitrogen and argon shield condition to powder of stainless steel (new powder, old powder), pure titanium powder, finding that laser and powder are had an effect and all can produce flue dust instantaneously.Observe and find that using new powder of stainless steel to produce flue dust obviously reduces, it is few that the newer powder of stainless steel of pure titanium powder generation flue dust produces flue dust.The main source of flue dust is C element, low-melting alloy element and impurity element burning in metal dust, gasification causes, the degree of prolonged and repeated use to flue dust problem of powder has cumulative function, although namely new powder of stainless steel produces a small amount of flue dust, but flue dust produces powder and pollutes, long-term accumulated causes that to produce flue dust when laser and powder effect more and more serious.Manufacturers all at present or scientific research institution also cannot fundamentally solve flue dust problem.The main negative effect that flue dust exists comprises: (1) pollutes transmission lens; (2) contaminated powders; (3) paving powder guide rail is polluted; (4) sealed compartment inwall is polluted; (5) hinder personnel to the observation of forming process.
First, it is produce lenses to pollute that flue dust exists a very serious consequence, particularly during low-velocity scanning, laser energy input is large, and the fume amount of generation is also large, and floating flue dust can stick to transmission lens, cause power attenuation during laser light eyeglass serious, major part laser energy acts on eyeglass in the mode of heat energy, and eyeglass can generate heat very soon, hot, until explosion.When flue dust is seriously polluted to transmission lens; laser is caused to incide the underpower on powder bed surface; powder smelting is insufficient; forming process must shut down the flue dust on manual removal lens repeatedly, so very large on aspect impacts such as the shaping efficiency of SLM and quantity of sintered parts after smoke contamination transmission lens.Secondly, after flue dust produces beyond the protected air-blowing of fraction to powder bed, major part still descends slowly and lightly to the powder bed surface not having to use, and mixes, increased the weight of the pollution level of powder with powder.Again, current SLM equipment many employings semi open model paving powder guide rails assembling mode, namely due to the existence of paving powder arm, result between sealed compartment and paving powder guide rail and there is elongated opening, the flue dust kicked up in process and flue dust can enter guide rail interior and cause guide rail lubricity to reduce, even cause the wearing and tearing of guide rail, thus guide precision is reduced until cannot use.Finally, the protected air-blowing of a flue dust part that process produces is walked, and remainder can stick to sealed compartment inwall, particularly watch window inwall.Along with the accumulation of flue dust, add have part flue dust man-hour and come off in next time, a part descends slowly and lightly contaminated powders to powder, and a part descends slowly and lightly and affect crudy on forming surface.And the flue dust sticking to watch window side can have a strong impact on the monitoring to process.
Summary of the invention
The purpose of this utility model is the shortcoming and defect overcoming above-mentioned prior art, there is provided one to be applied to 3D and print flue dust detection and cleaning equipment in sealed compartment, automatically can detect dust concentration, automatically adjustment dedusting speed class and automatically carry out gas circularly purifying.
The utility model is achieved through the following technical solutions:
One is applied to 3D and prints flue dust in sealed compartment and detect and cleaning equipment, comprise sealed compartment 4, sealed compartment gas supply device, for gas in sealed compartment 4 is carried out circularly purifying gas circulating purification system, for detect flue gas concentration in sealed compartment 4 dust concentration checkout gear, for detecting oxygen detection device, the control device 20 of oxygen content in sealed compartment 4;
Described control device 20 connects gas circulating purification system, dust concentration checkout gear, oxygen detection device respectively by cable 11;
Described gas circulating purification system comprises fume purifier 16, and this fume purifier 16 air inlet pipeline connects the gas circulation air inlet 13 of sealed compartment 4, and the gas that fume purifier 16 outlet pipe connects sealed compartment 4 recycles gas port 10; Gas circulation air inlet 13 pipeline is provided with the first pressure sensor 15, the pipeline recycling gas port 10 at gas is provided with the second pressure sensor 19.
Described dust concentration checkout gear comprises and is arranged on sealed compartment 4 sidewall solenoid 8 and connected dust concentration detector main frame 24.
Described magnetic valve 8 is provided with the blower fan 23 of powder on dust concentration detector main frame 24 camera lens that blows off.
Described oxygen detection device comprises and is arranged on oxygen analyser magnetic valve 7 on sealed compartment 4 sidewall and connected oxygen analyser main frame 22.
The sidewall of described sealed compartment 4 is provided with pressure sensor 6 and the pressure sensor display 21 for showing pressure data; Described fume purifier 16 comprises filter core 17 and smoke filter motor 18.
Described sealed compartment gas supply device comprises protection gas cylinder 1, and protection gas cylinder 1 connects the protection gas air inlet magnetic valve 3 of sealed compartment 4 by steam line, steam line is provided with steam line magnetic valve 2; Described sealed compartment 4 is also provided with exhaust outlet magnetic valve 9.The front portion of described sealed compartment 4 is provided with hermatic door 5 and hermatic door detecting sensor 14.
Described control device 20 connects display unit 12.
The above-mentioned 3D that is applied to prints flue dust in sealed compartment and detects and detect and purification method flue dust in sealed compartment with cleaning equipment, comprises the steps:
Starting device, cuts out hermatic door 5, and hermatic door detecting sensor 14 detects that hermatic door is closed and puts in place, starts dust concentration checkout gear and gas circulating purification system;
Start the dust concentration data detecting sealed compartment 4 inside in real time, the data of detection are sent to control device 20 by cable 11 by dust concentration checkout gear in real time, control device 20 starts the dust concentration data that treatment and analysis obtains, after in sealed compartment 4 internal gas, dust concentration rises to preset value gradually, control device 20 starts to send respective level rotating speed command to smoke filter motor 18, fume purifier 16 starts dedusting work, dust wherein in gas carries out dust removal process through filter core 17, sealed compartment 4 inside is turned back to except the gas after complete flue dust recycles gas port 10 through gas, complete gas circulation dust concentration to detect and purification process.
Described dust concentration checkout gear to the concrete detecting step of dust concentration is: when starting to detect dust concentration in sealed compartment 4, open magnetic valve 8, then opens dust concentration detector main frame 24, now starts the dust concentration content detecting sealed compartment 4 inside; The signal recorded is sent to control device 20 by cable 11 and carries out data analysis and process by dust concentration detector main frame 24 in real time, send corresponding rotating speed command according to analysis result to smoke filter motor 18, and corresponding smoke filter motor 18 rotating speed and class information are sent to display unit 12 show.
The concrete circularly purifying step of described gas circulating purification system is: the first pressure sensor 15 and the second pressure sensor 19 are opened, high fume gases in sealed compartment 4 enters fume purifier 16 from gas circulation air inlet 13, the protective gas filtered through filter core 17 recycles gas port 10 from gas and enters sealed compartment 4, completes a circulation; Now the first pressure sensor 15 and the second pressure sensor 19 are monitored air inlet air pressure respectively and are given vent to anger air pressure, there is pressure differential between the first pressure sensor 15 and the second pressure sensor 19; When filter core 17 blocks because of flue dust, the force value of the force value of the first pressure sensor 15 and the second pressure sensor 19 is caused to be greater than the threshold value of setting, now send filter core 17 to control device 20 and change alarm, and replacing warning information is sent to display unit 12, alert upgrades filter core 17.
The utility model, relative to prior art, has following advantage and effect:
The utility model contain one for gas in sealed compartment 4 is carried out circularly purifying gas circulating purification system, one for detect flue gas concentration in sealed compartment 4 dust concentration checkout gear, one for detecting the oxygen detection device of oxygen content in sealed compartment 4.First oxygen content gas in sealed compartment and pressure are reduced to preset level before processing starts; Then gas circulating purification system is opened; after selective laser melt-forming processing starts; again sealed compartment is passed into by after gas purification larger for the dustiness in sealed compartment from the other end by fume purifier; not only save the use amount of protective gas like this thus reduce processing cost; and the flue dust entered in air can be greatly reduced, reduce air pollution.
The utility model dust concentration checkout gear.Dust concentration in real-time detection sealed compartment, starts circularly purifying dedusting when dust concentration exceedes preset value, until dust concentration is reduced to below preset level.The use of this dust concentration checkout gear can provide safety, stable environment for selective laser melt-forming process, improves Forming Quality.
The utility model can regulate dedusting speed by the different numerical value arranging dust concentration checkout gear.Dust concentration checkout gear is set to from low to high 12 variable concentrations grades, 12 rotating speed grades of corresponding smoke filter motor, the higher motor speed of the concentration detected is faster.Automatically can select dedusting strategy according to current processing environment, thus it is minimum to ensure that dust content is reduced to rapidly, ensures that forming process is carried out smoothly.
The utility model is provided with first and second pressure sensor respectively at the air inlet of dust pelletizing system and gas outlet, threshold difference is provided with between first and second sensor, difference between first and second pressure sensor exceedes default threshold pressure difference, then illustrate that smoke filter filter core needs to change, and send warning signal to control device, and show filter element replacing prompting in the display.Ensure carrying out smoothly of the high-quality a large amount of forming process.
Accompanying drawing explanation
Fig. 1 is that the utility model is applied to flue dust detection and cleaning equipment structural representation in 3D printing sealed compartment.
Fig. 2 is Fig. 1 partial structurtes refinement schematic diagram.
Fig. 3 is the graph of relation between smoke filter motor speed and dust concentration detected value.
Detailed description of the invention
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in the figure.The utility model one is applied to 3D and prints flue dust in sealed compartment and detect and cleaning equipment, comprise sealed compartment 4, sealed compartment gas supply device, for gas in sealed compartment 4 is carried out circularly purifying gas circulating purification system, for detect flue gas concentration in sealed compartment 4 dust concentration checkout gear, for detecting oxygen detection device, the control device 20 of oxygen content in sealed compartment 4;
Described control device 20 connects gas circulating purification system, dust concentration checkout gear, oxygen detection device respectively by cable 11;
Described gas circulating purification system comprises fume purifier 16, and this fume purifier 16 air inlet pipeline connects the gas circulation air inlet 13 of sealed compartment 4, and the gas that fume purifier 16 outlet pipe connects sealed compartment 4 recycles gas port 10; Gas circulation air inlet 13 pipeline is provided with the first pressure sensor 15, the pipeline recycling gas port 10 at gas is provided with the second pressure sensor 19.
Described dust concentration checkout gear comprises and is arranged on sealed compartment 4 sidewall solenoid 8 and connected dust concentration detector main frame 24.The range of dust concentration checkout gear is 0-12g/m
3, sensitivity is 2mg/m
3.
Described magnetic valve 8 is provided with the blower fan 23 of powder on dust concentration detector main frame 24 camera lens that blows off.
Described oxygen detection device comprises and is arranged on oxygen analyser (sensitivity is 10ppm) magnetic valve 7 on sealed compartment 4 sidewall and connected oxygen analyser main frame 22.When starting to detect oxygen content gas in sealed compartment 4, open oxygen analyser magnetic valve 7 and oxygen analyser main frame 22, now oxygen analyser main frame 22 starts the oxygen content in Real-Time Monitoring sealed compartment 4 in gas, and the data of detection are sent to control device 20 by cable 11, be sent to display unit 12 after control device 20 carries out analyzing and processing and show.
The sidewall of described sealed compartment 4 is provided with pressure sensor 6 and the pressure sensor display 21 for showing pressure data, and pressure sensor 6 is for detecting sealed compartment 4 internal pressure in real time; Described fume purifier 16 comprises filter core 17 and smoke filter motor 18.
Described sealed compartment gas supply device comprises protection gas cylinder 1, and protection gas cylinder 1 connects the protection gas air inlet magnetic valve 3 of sealed compartment 4 by steam line, steam line is provided with steam line magnetic valve 2; Described sealed compartment 4 is also provided with exhaust outlet magnetic valve 9.The front portion of described sealed compartment 4 is provided with hermatic door 5 and hermatic door detecting sensor 14.Described control device 20 connects display unit 12.Protection gas adopts as nitrogen, argon gas etc.
During the work of gas circulating purification system, dust concentration level in sealed compartment 4 is detected according to dust concentration checkout gear, corresponding rotating speed grade of opening smoke filter motor 18, the rotating speed grade of dust concentration higher smoke filter motor 18 is higher, rotating speed higher then dirt filter motor 18 faster, gas containing flue dust forms gas circulating flow by flowing into sealed compartment after fume purifier 16 on the right side of sealed compartment, ensure that the flue dust formed in forming process is blown off immediately below laser emission, thus decrease the impact of flue dust on laser power; The diameter of gas circulation line is by fume purifier power decision; This first pressure sensor 15 and the second pressure sensor 19 are closed when non-machining state.During machining state, the first pressure sensor 15 and the second pressure sensor 19 are for detecting the pressure of air inlet and gas outlet in real time, when pressure is greater than the threshold pressure difference of setting, illustrating in fume purifier 16 that filter core 17 has adsorbed too much flue dust causes permeability and filterability to be deteriorated, therefore need to change, this timed unit 20 sends filter core 17 and changes warning, and in display unit 12, show the prompting that filter core 17 damages needs replacing.The range of the first pressure sensor 15 and the second pressure sensor 19 is-30kPa ~ 30kPa, and sensitivity is 0.01kPa.
The above-mentioned 3D that is applied to prints flue dust in sealed compartment and detects and detect and purification method flue dust in sealed compartment with cleaning equipment, comprises the steps:
Starting device, cuts out hermatic door 5, and hermatic door detecting sensor 14 detects that hermatic door is closed and puts in place, starts dust concentration checkout gear and gas circulating purification system;
Start the dust concentration data detecting sealed compartment 4 inside in real time, the data of detection are sent to control device 20 by cable 11 by dust concentration checkout gear in real time, control device 20 starts the dust concentration data that treatment and analysis obtains, after in sealed compartment 4 internal gas, dust concentration rises to preset value gradually, control device 20 starts to send respective level rotating speed command to smoke filter motor 18, fume purifier 16 starts dedusting work, dust wherein in gas carries out dust removal process through filter core 17, sealed compartment 4 inside is turned back to except the gas after complete flue dust recycles gas port 10 through gas, complete gas circulation dust concentration to detect and purification process.
Described dust concentration checkout gear to the concrete detecting step of dust concentration is: when starting to detect dust concentration in sealed compartment 4, open magnetic valve 8, then opens dust concentration detector main frame 24, now starts the dust concentration content detecting sealed compartment 4 inside; The signal recorded is sent to control device 20 by cable 11 and carries out data analysis and process by dust concentration detector main frame 24 in real time, send corresponding rotating speed command according to analysis result to smoke filter motor 18, and corresponding smoke filter motor 18 rotating speed and class information are sent to display unit 12 show.
The concrete circularly purifying step of described gas circulating purification system is: the first pressure sensor 15 and the second pressure sensor 19 are opened, high fume gases in sealed compartment 4 enters fume purifier 16 from gas circulation air inlet 13, the protective gas filtered through filter core 17 recycles gas port 10 from gas and enters sealed compartment 4, completes a circulation, now the first pressure sensor 15 and the second pressure sensor 19 are monitored air inlet air pressure respectively and are given vent to anger air pressure, there is pressure differential between the first pressure sensor 15 and the second pressure sensor 19, along with the duty of filter core 17 and smoke filter motor 18 is different, its pressure differential constantly changes, when filter core 17 because when too much flue dust blocks, the force value of the force value of the first pressure sensor 15 and the second pressure sensor 19 is caused to be greater than threshold value (the such as 20bar of setting, this threshold value can be different with to the requirement of dust concentration and be set to different numerical value according to actual processing request, wherein dust concentration is required that higher then numerical value is lower, otherwise numerical value is higher), now send filter core 17 to control device 20 and change alarm, and replacing warning information is sent to display unit 12, alert upgrades in time filter core 17, thus ensure that forming process is carried out smoothly.
When dust concentration drop to meet the demands and filter core 17 state is normal time, start to continue forming process, until process finishing.When if intermediate detection does not meet the demands to dust concentration and pressure differential, repeat said process, until whole forming process terminates completely.
As mentioned above, just the utility model can be realized preferably.
Embodiment of the present utility model is not restricted to the described embodiments; other are any do not deviate from Spirit Essence of the present utility model and principle under do change, modification, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (7)
1. be applied to 3D and print flue dust detection and a cleaning equipment in sealed compartment, comprise sealed compartment (4), sealed compartment gas supply device; It is characterized in that, this is applied to 3D and prints flue dust in sealed compartment and detect and also comprise with cleaning equipment: one for sealed compartment (4) interior gas is carried out circularly purifying gas circulating purification system, one for detect sealed compartment (4) interior flue gas concentration dust concentration checkout gear, one for detecting oxygen detection device, a control device (20) of sealed compartment (4) interior oxygen content;
Described control device (20) connects gas circulating purification system, dust concentration checkout gear, oxygen detection device respectively by cable (11);
Described gas circulating purification system comprises fume purifier (16), this fume purifier (16) air inlet pipeline connects the gas circulation air inlet (13) of sealed compartment (4), and the gas that fume purifier (16) outlet pipe connects sealed compartment (4) recycles gas port (10); Gas circulation air inlet (13) pipeline is provided with the first pressure sensor (15), the pipeline recycling gas port (10) at gas is provided with the second pressure sensor (19).
2. the 3D that is applied to according to claim 1 prints flue dust detection and cleaning equipment in sealed compartment, it is characterized in that, described dust concentration checkout gear comprises and is arranged on sealed compartment (4) sidewall solenoid (8) and connected dust concentration detector main frame (24).
3. the 3D that is applied to according to claim 2 prints flue dust detection and cleaning equipment in sealed compartment, it is characterized in that, described magnetic valve (8) is provided with the blower fan (23) of powder on dust concentration detector main frame (24) camera lens that blows off.
4. the 3D that is applied to according to claim 1 prints flue dust detection and cleaning equipment in sealed compartment, it is characterized in that, described oxygen detection device comprises and is arranged on oxygen analyser magnetic valve (7) on sealed compartment (4) sidewall and connected oxygen analyser main frame (22).
5. the 3D that is applied to according to any one of claim 1 to 4 prints flue dust detection and cleaning equipment in sealed compartment, it is characterized in that, the sidewall of described sealed compartment (4) is provided with pressure sensor (6) and the pressure sensor display (21) for showing pressure data; Described fume purifier (16) comprises filter core (17) and smoke filter motor (18).
6. the 3D that is applied to according to claim 5 prints flue dust detection and cleaning equipment in sealed compartment, it is characterized in that, described sealed compartment gas supply device comprises protection gas cylinder (1), protection gas cylinder (1) connects protection gas air inlet magnetic valve (3) of sealed compartment (4) by steam line, steam line is provided with steam line magnetic valve (2); Described sealed compartment (4) is also provided with exhaust outlet magnetic valve (9); The front portion of described sealed compartment (4) is provided with hermatic door (5) and hermatic door detecting sensor (14).
7. the 3D that is applied to according to claim 5 prints flue dust detection and cleaning equipment in sealed compartment, and it is characterized in that, described control device (20) connects display unit (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520812703.4U CN205057063U (en) | 2015-10-19 | 2015-10-19 | Be applied to 3D and print interior smoke and dust detection of pressurized cabin and clarification plant |
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| CN201520812703.4U CN205057063U (en) | 2015-10-19 | 2015-10-19 | Be applied to 3D and print interior smoke and dust detection of pressurized cabin and clarification plant |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965016A (en) * | 2016-06-25 | 2016-09-28 | 成都雍熙聚材科技有限公司 | Explosion-proof purification tank for 3D printing devices and its explosion-proof control method |
| CN106731329A (en) * | 2016-12-16 | 2017-05-31 | 浙江大学 | A kind of submicron-sized particulate filter based on electrostatic spinning technique |
| CN110181055A (en) * | 2019-07-02 | 2019-08-30 | 佛山科学技术学院 | A kind of metal 3D printer intelligence deoxygenation circulation purifying method and equipment |
| CN110469923A (en) * | 2019-07-31 | 2019-11-19 | 王学东 | A kind of oxygen cabin environmental control system |
| CN111097910A (en) * | 2020-02-06 | 2020-05-05 | 高尚孜 | AI-based environment control system and control method |
| CN112139493A (en) * | 2019-06-28 | 2020-12-29 | 株式会社沙迪克 | Laminated molding device |
| CN112475317A (en) * | 2020-11-05 | 2021-03-12 | 广州弦领智创科技有限公司 | A dust removal structure in sealed cabin for vibration material disk |
| CN112743106A (en) * | 2020-12-30 | 2021-05-04 | 浙江拓博环保科技有限公司 | Atmosphere purification method and system |
| CN113267423A (en) * | 2021-06-21 | 2021-08-17 | 贵州茅台酒股份有限公司 | Cabin body simulation device and gas introduction and gas detection method |
| CN114801176A (en) * | 2021-01-21 | 2022-07-29 | 优铸科技(玉溪)有限公司 | 3D printer odour removal purifier |
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- 2015-10-19 CN CN201520812703.4U patent/CN205057063U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965016A (en) * | 2016-06-25 | 2016-09-28 | 成都雍熙聚材科技有限公司 | Explosion-proof purification tank for 3D printing devices and its explosion-proof control method |
| CN106731329A (en) * | 2016-12-16 | 2017-05-31 | 浙江大学 | A kind of submicron-sized particulate filter based on electrostatic spinning technique |
| CN106731329B (en) * | 2016-12-16 | 2020-04-24 | 浙江大学 | Ultramicro fine particle filtering device based on electrostatic spinning technology |
| CN112139493A (en) * | 2019-06-28 | 2020-12-29 | 株式会社沙迪克 | Laminated molding device |
| CN112139493B (en) * | 2019-06-28 | 2022-05-24 | 株式会社沙迪克 | Laminated molding device |
| CN110181055A (en) * | 2019-07-02 | 2019-08-30 | 佛山科学技术学院 | A kind of metal 3D printer intelligence deoxygenation circulation purifying method and equipment |
| CN110469923A (en) * | 2019-07-31 | 2019-11-19 | 王学东 | A kind of oxygen cabin environmental control system |
| CN111097910A (en) * | 2020-02-06 | 2020-05-05 | 高尚孜 | AI-based environment control system and control method |
| CN112475317A (en) * | 2020-11-05 | 2021-03-12 | 广州弦领智创科技有限公司 | A dust removal structure in sealed cabin for vibration material disk |
| CN112743106A (en) * | 2020-12-30 | 2021-05-04 | 浙江拓博环保科技有限公司 | Atmosphere purification method and system |
| CN114801176A (en) * | 2021-01-21 | 2022-07-29 | 优铸科技(玉溪)有限公司 | 3D printer odour removal purifier |
| CN113267423A (en) * | 2021-06-21 | 2021-08-17 | 贵州茅台酒股份有限公司 | Cabin body simulation device and gas introduction and gas detection method |
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