CN106731428A - A kind of SLM that is applied to has the gas circulation purifier of Pressure difference feedback function - Google Patents
A kind of SLM that is applied to has the gas circulation purifier of Pressure difference feedback function Download PDFInfo
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- CN106731428A CN106731428A CN201710167858.0A CN201710167858A CN106731428A CN 106731428 A CN106731428 A CN 106731428A CN 201710167858 A CN201710167858 A CN 201710167858A CN 106731428 A CN106731428 A CN 106731428A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 127
- 238000009826 distribution Methods 0.000 claims abstract description 62
- 230000000903 blocking effect Effects 0.000 claims abstract description 44
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 239000000428 dust Substances 0.000 claims description 64
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 238000000746 purification Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0032—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions using electrostatic forces to remove particles, e.g. electret filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0038—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions with means for influencing the odor, e.g. deodorizing substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0095—Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/45—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for electronic devices, e.g. computers, hard-discs, mobile phones
Abstract
There is the gas circulation purifier of Pressure difference feedback function the invention discloses a kind of SLM that is applied to, including：Airscoop shroud；First unidirectional gas blocking valve, its air inlet is connected with airscoop shroud；Filter core even gas distribution device, its air inlet is connected with the gas outlet of the first unidirectional gas blocking valve；HEPA filter boxs, for carrying out first time filtering to the gas exported from the gas outlet of filter core even gas distribution device；Activated carbon filter box, for carrying out second filtering to the gas exported from the gas outlet of HEPA filter boxs；Motor, air inlet is connected with the gas outlet of activated carbon filter box；Second unidirectional gas blocking valve, its air inlet is connected with the gas outlet of motor, gas is expelled in the forming seal cabin of selective laser melting systems from the gas outlet of motor.Through the above way, a kind of SLM that is applied to disclosed in this invention has the advantages that the gas circulation purifier of Pressure difference feedback function has purification efficiency higher, good seal performance and realtime control good.
Description
Technical field
The present invention relates to 3D printing technique field, there is the gas of Pressure difference feedback function more particularly, to a kind of SLM that is applied to
Body circulation purifier.
Background technology
The development of (Selective Lsaer Melting, SLM) technology is melted with selective laser, SLM has been able to directly
The metal parts of manufacture metallurgical binding, dense structure, dimensional accuracy and good mechanical properties is connect, is had broad application prospects,
Study hotspot as current material increasing field.SLM printing metal parts has personalized designs, is molded quick, manufacture week
Phase short advantage, is very suitable for small lot, personalization, the manufacture with complex surface and internal structure metal parts.But beat
Print metal process there is also the pollution of an important problem, i.e. metallic dust, leakage.Generally, SLM forming processes are produced
Splatter size is small, these powder splash easily be scattered in metal molded surface and long-term disperse in atmosphere, both influenceed
To the performance of forming metal parts, the also personal safety of serious threat operating personnel.Therefore, a large amount of metal powders are contained in SLM technologies
The circularly purifying of gas is necessary in the forming bin of dirt.
The content of the invention
There is the gas circulation of Pressure difference feedback function the present invention solves the technical problem of a kind of SLM that is applied to is provided
Purifier, solves above-mentioned SLM technologies of the prior art and causes metal dust splashing influence shaping gold in process
Belong to the performance of part and the healthy technical problem of influence operating personnel.
In order to solve the above technical problems, one aspect of the present invention is：One kind is provided and is applied to SLM with pressure
The gas circulation purifier of difference feedback function includes：Airscoop shroud, for being input into gas；First unidirectional gas blocking valve, it enters
Gas port is connected with airscoop shroud, so as to obtain gas be input into from the air inlet of the first unidirectional gas blocking valve；Filter core even gas distribution device,
Its air inlet is connected with the gas outlet of the first unidirectional gas blocking valve, with to defeated from the gas outlet of the first unidirectional gas blocking valve institute
The gas for entering is shunted, so as to obtain the uniform gas outlet from filter core even gas distribution device of gas export；HEPA filter boxs, with filter core
The gas outlet connection of even gas distribution device, for carrying out first to the gas exported from the gas outlet of filter core even gas distribution device
Secondary filtering；Activated carbon filter box, its air inlet is connected with the gas outlet of HEPA filter boxs, for defeated from the gas outlet of HEPA filter boxs institute
The gas for going out carries out second filtering；Motor, its air inlet is connected with the gas outlet of activated carbon filter box, for by gas from activity
Extract out the gas outlet of carbon filtration case；Second unidirectional gas blocking valve, its air inlet is connected with the gas outlet of motor, by gas from electricity
The gas outlet of machine is expelled in the forming seal cabin of selective laser melting systems.
Wherein, above-mentioned gas circulation purifier also includes the dual-purpose pipe of air inlet dust and dust collection bottle, wherein air inlet
The dual-purpose pipe of dust is provided with the outlet of first mouth of pipe, second mouth of pipe and the 3rd mouth of pipe, first mouth of pipe and the first unidirectional gas blocking valve
Mouth connection, second mouth of pipe is connected with the air inlet of filter core even gas distribution device, and the 3rd mouth of pipe is connected with dust collection bottle, to pass through
Dust collection bottle collects the metallic dust in gas.
Wherein, above-mentioned gas circulation purifier also includes first gas differential pressure pickup, and its test side is respectively provided with
On the air inlet and gas outlet of HEPA filter boxs, for detecting the draught head between the air inlet of HEPA filter boxs and gas outlet.
Wherein, above-mentioned gas circulation purifier also includes second gas differential pressure pickup, and its test side is respectively provided with
On the air inlet and gas outlet of activated carbon filter box, for detecting the air pressure between the air inlet of activated carbon filter box and gas outlet
Difference.
Wherein, above-mentioned gas circulation purifier also includes third gas differential pressure pickup, and its test side is respectively provided with
On the air inlet and gas outlet of motor, for detecting the draught head between the air inlet of motor and gas outlet.
Wherein, the first unidirectional gas blocking valve includes first gas closing valve chest, the first spring anchorage bracket, the first spring
With the first inlet piston, wherein first gas closing valve chest is provided with gas outlet and air inlet, first gas closing valve chest
Air inlet is connected with airscoop shroud, and the gas outlet of first gas closing valve chest is connected with the air inlet of filter core even gas distribution device,
First spring anchorage bracket is arranged at the air inlet of first gas closing valve chest, and the first spring anchorage bracket passes through the first spring
It is connected with the first inlet piston, the inner chamber of wherein first gas closing valve chest is in round table-like, and first gas close valve chest
Inner chamber edge in 45 degree settings, the close airscoop shroud in the small one end of internal diameter of the inner chamber of first gas closing valve chest.
Wherein, filter core even gas distribution device includes even distribution device shell and uniform air inlet dividing plate, and even distribution device shell is provided with
Air inlet and gas outlet, the air inlet of even distribution device shell are connected with the gas outlet of the first unidirectional gas blocking valve, even distribution device
The gas outlet of shell is connected with the air inlet of HEPA filter boxs, wherein uniform air inlet dividing plate is arranged on the air inlet of even distribution device shell
Top, to cause that the gas being input into from the air inlet of even distribution device shell is blocked by uniform air inlet dividing plate, with to from arranging
The gas that the air inlet of shell is input into is put to be shunted.
Wherein, HEPA filter boxs include housing, HEPA filter screens and Electro-static Driven Comb net, and housing is provided with air inlet and gas outlet,
The air inlet of housing is connected with the gas outlet of filter core even gas distribution device, and the gas outlet of housing connects with the air inlet of activated carbon filter box
Connect, wherein HEPA filter screens are circumferentially positioned at outside the gas outlet of housing, for being carried out to the gas being input into from the air inlet of housing
Filter for the first time, and Electro-static Driven Comb net is arranged in the middle of HEPA filter screens, for discharging at each position of HEPA screen surfaces
Electrostatic.
Wherein, activated carbon filter box includes activated carbon fixed mount and active carbon layer, and activated carbon fixed mount is provided with air inlet and goes out
Gas port, the air inlet of activated carbon fixed mount is connected with the gas outlet of HEPA filter boxs, gas outlet and the motor of activated carbon fixed mount
Air inlet is connected, and wherein active carbon layer is arranged between the air inlet of activated carbon fixed mount and gas outlet.
Wherein, the second unidirectional gas blocking valve includes second gas closing valve chest, second spring fixed mount, second spring
With the second inlet piston, wherein second gas closing valve chest is provided with gas outlet and air inlet, second gas closing valve chest
Air inlet is connected with the gas outlet of motor, and the gas outlet of second gas closing valve chest is close with the shaping of selective laser melting systems
Batten down is connected, and second spring fixed mount setting is at the air inlet of second gas closing valve chest, and second spring fixed mount is logical
Cross second spring to be connected with the second inlet piston, wherein the inner chamber of second gas closing valve chest is in round table-like, and second gas
The edge of inner chamber of valve chest is closed in 45 degree of settings, one end that the internal diameter of the inner chamber of second gas closing valve chest is small is close to electricity
Machine.
Difference prior art, of the invention gas circulation purifier has purification efficiency higher, and purification gas are clean
Cleanliness is high, filter screen long service life, be easy to dust collection, the advantages of Electro-static Driven Comb is convenient and swift；Good seal performance, is prevented from
The metallic dust of internal gathering is diffused into the external world, and simple structure low cost；Realtime control is good, can in time obtain each
The situation of key position, discharge locking relevant issues, the running status for maintaining device good.
Brief description of the drawings
Fig. 1 is that the present invention is a kind of is applied to the structural representation that SLM has the gas circulation purifier of Pressure difference feedback function
Figure,
Fig. 2 is the overlooking the structure diagram of filter core even gas distribution device in Fig. 1.
In figure, 1 is airscoop shroud, and 2 is tracheae, and 3 is the first unidirectional gas blocking valve, and 4 is gas outlet, and 5 is air inlet dust two
With pipe, 6 is dust collection valve, and 7 is dust collection bottle, and 8 is filter core even gas distribution device, and 9 is HEPA filter screens, and 10 filter for HEPA
Case, 11 is Electro-static Driven Comb net, and 12 is activated carbon filter box, and 13 is activated carbon fixed mount, and 14 is active carbon layer, and 15 is motor air inlet
Mouthful, 16 is motor gas outlet, and 17 is exhaust outlet, and 18 is the second unidirectional gas blocking valve, and 19 is display, and 20 is alarm, 21
It is controller, 22 is frequency converter, and 23 is first gas differential pressure pickup, and 24 is second gas differential pressure pickup, and 25 is the 3rd gas
Body differential pressure pickup, 26 is motor.
Specific embodiment
The present invention is described in detail with implementation method below in conjunction with the accompanying drawings.
Refering to shown in Fig. 1 and Fig. 2, Fig. 1 is that a kind of SLM that is applied to of the present invention has the gas circulation of Pressure difference feedback function net
The structural representation that makeup is put, Fig. 2 is the overlooking the structure diagram of filter core even gas distribution device in Fig. 1.The gas circulation is purified
Device includes airscoop shroud 1, the first unidirectional gas blocking valve 3, filter core even gas distribution device 8, HEPA (High efficiency
Particulate air Filter, high-efficiency air filtering) filter box 10, activated carbon filter box 12, motor 26, the second unidirectional gas envelope
Valve closing 18, first gas differential pressure pickup 23, second gas differential pressure pickup 24 and third gas differential pressure pickup 25.
Airscoop shroud 1 is used to be input into gas.In the present embodiment, airscoop shroud 1 is in round table-like, and the less end of its internal diameter passes through gas
Pipe 2 is connected with the first unidirectional gas blocking valve 3.
The air inlet of the first unidirectional gas blocking valve 3 is connected with airscoop shroud 1, so as to obtain gas from the first unidirectional gas confinement
The air inlet input of valve 3.Specifically, the air inlet of the first unidirectional gas blocking valve 3 is connected by tracheae 2 with airscoop shroud 1.Ying Li
Solution, the gas being input into is the mixture of air and metallic dust, into the first unidirectional gas blocking valve 3 after form mixed airflow
(i.e. gas), wherein the first unidirectional gas blocking valve 3 is prevented from gas backflow.
Further, the first unidirectional gas blocking valve 3 includes first gas closing valve chest, the first spring anchorage bracket, the
One spring and the first inlet piston.Wherein first gas closing valve chest is provided with air inlet and gas outlet 4, first gas closing valve
The air inlet of housing is connected with airscoop shroud 1, the air inlet of the gas outlet and filter core even gas distribution device 8 of first gas closing valve chest
Mouth connection, the first spring anchorage bracket is arranged at the air inlet of first gas closing valve chest and is tightly connected with air inlet.Enter
One step, the first spring anchorage bracket is connected by the first spring with the first inlet piston, and the first inlet piston is removably set on
In the inner chamber of first gas closing valve chest.The wherein inner chamber of first gas closing valve chest is in round table-like, and first gas are sealed
The edge of the inner chamber of valve closing housing is close to air inlet in 45 degree of settings, one end that the internal diameter of the inner chamber of first gas closing valve chest is small
Cover 1.
It should be understood that the first inlet piston closely agrees with the inner chamber of first gas closing valve chest, i.e. the first air inlet is lived
Fill in and be tightly connected with the luminal border of first gas closing valve chest, improve the air-tightness of the first unidirectional gas blocking valve 3.It is worth
It is noted that be divided into the first sealing inner chamber and the second sealing for the inner chamber of first gas closing valve chest by the first inlet piston
Chamber, i.e. first gas closing valve chest are provided with air inlet, the inner chamber of first gas closing valve chest and the first inlet piston and are formed
First sealing inner chamber, first gas closing valve chest is provided with gas outlet, the inner chamber of first gas closing valve chest and the first air inlet
Piston forms second and seals inner chamber.
In the present embodiment, the inner chamber of first gas closing valve chest is in round table-like, and the edge of its inner chamber sets in 45 degree
Put, the first inlet piston can be pumped by the first spring in the inner ring of the first spring anchorage bracket.Further,
One spring anchorage bracket is evenly distributed with some circular apertures around its spring attachment positions.Air-flow can be from some circular apertures
Exit into the inner chamber that first gas close valve chest.Specifically, when air-flow is by some circles on the first spring anchorage bracket
When aperture enters the inner chamber of first gas closing valve chest, the pressure of the inner chamber of first gas closing valve chest becomes big, i.e., and first
The pressure of the pressure more than the second sealing inner chamber of inner chamber is sealed, the first inlet piston is promoted down (i.e. towards filter core even gas distribution
The locality of device 8) motion, to cause the first inlet piston away from the position of some circular apertures, now the first inlet piston
Edge with the inner chamber of first gas closing valve chest is not contacted, and gap occurs, and gas flows out from gap again, then via outlet
Mouth 4 enters in filter core even gas distribution device 8.When the pressure without gas entrance or the first sealing inner chamber is less than in the second sealing
During the pressure in chamber, the first inlet piston is resetted by the effect of the first spring, and the first inlet piston closes valve casing with first gas
The EDGE CONTACT of the inner chamber of body, will be arranged on some small sircle holes closing around the first spring anchorage bracket, to prevent gas backflow.
That is, outside can not be expelled into the air-flow in the first unidirectional gas blocking valve 3.
The air inlet of filter core even gas distribution device 8 is connected with the gas outlet of the first unidirectional gas blocking valve 3, with to from first
The gas that the gas outlet of unidirectional gas blocking valve 3 is input into is shunted, so that it is uniform from filter core even gas distribution device 8 to obtain gas
Gas outlet output.In the present embodiment, filter core even gas distribution device 8 is in cylindrical shape.Filter core even gas distribution device 8 is used to shunt
Metallic dust mixed airflow simultaneously makes it uniformly by HEPA filter screens 9, it is to avoid mix dust air-flow is selectively uneven to be passed through
Cause dust rapid accumulation obstruction filter screen and then aggravation filter screen abrasion, strainer filtering efficiency drop that filter screen is local during HEPA filter screens 9
It is low.
Specifically, filter core even gas distribution device 8 is connected especially by tracheae with the first unidirectional gas blocking valve 3.Further
Ground, filter core even gas distribution device 8 includes even distribution device shell and uniform air inlet dividing plate, wherein, even distribution device shell is provided with air inlet
Mouth and gas outlet.The air inlet of even distribution device shell is connected and received from outlet with the gas outlet 4 of the first unidirectional gas blocking valve 3
The metallic dust mixed airflow that the conveying of mouth 4 comes.Preferably, uniform air inlet dividing plate is arranged on the air inlet of even distribution device shell
Side, is blocked, with to even distribution device shell with the gas for the air inlet of even distribution device shell is input into by uniform air inlet dividing plate
The gas that is input into of air inlet shunted or disperseed.It should be understood that the mixed airflow after shunting is entering even distribution device shell
Inside and can uniformly by HEPA filter screens 9 when entering in HEPA filter boxs 10.Preferably, uniform air inlet dividing plate is inclined and set
Put, and there is certain centripetal downward inclination angle to design for the inner chamber of even distribution device shell, i.e., even distribution device shell is provided with inclination court
To the inwall of dust collection bottle 7, the inwall of even distribution device shell be arranged in parallel with uniform air inlet dividing plate, and in uniform air inlet dividing plate
The heart is provided with through hole, contributes to metallic dust to be tumbled into dust collection bottle 7 by self gravitation.
HEPA filter boxs 10 are connected with the gas outlet of filter core even gas distribution device 8, for from filter core even gas distribution device 8
The gas that gas outlet is exported carries out first time filtering.Wherein, HEPA filter boxs 10 include housing, HEPA filter screens 9 and electrostatic and release
Net 11 is put, housing is provided with air inlet and gas outlet, and the air inlet of housing is connected with the gas outlet of filter core even gas distribution device 8, with
Mixed airflow is received, the gas outlet of housing is connected with the air inlet of activated carbon filter box 12.
Wherein HEPA filter screens 9 are circumferentially positioned at outside the gas outlet of housing, for the gas to being input into from the air inlet of housing
Body carries out first time filtering.Specifically, mixed airflow enters in HEPA filter boxs 10 and uniformly passes through HEPA filter screens 9, to cause
HEPA filter screens 9 carry out first time filtering to mixed airflow, and mixed airflow uniformly by HEPA filter screens 9, may be such that HEPA filter screens 9
The dust of upper accumulation is evenly distributed in the surface of HEPA filter screens 9.During mixed airflow passes through HEPA filter screens 9, gaseous mixture
Stream and the mantle friction of HEPA filter screens 9, can produce substantial amounts of electrostatic.The electrostatic of generation can inhale the metallic dust in mixed airflow
It is attached, influence filter effect, it is therefore desirable to set Destaticizing device to discharge the electrostatic of generation.In the present embodiment, electrostatic is released
Put net 11 to be arranged in the middle of HEPA filter screens 9, the electrostatic for discharging each position on the surface of HEPA filter screens 9.
The air inlet of activated carbon filter box 12 is connected with the gas outlet of HEPA filter boxs 10, for from the gas outlet of HEPA filter boxs 10
The gas for being exported carries out second filtering.Dual mistake is carried out to mixed airflow by HEPA filter boxs 10 and activated carbon filter box 12
Filter, reaches more preferable clean-up effect.Wherein, activated carbon filter box 12 includes activated carbon fixed mount 13 and active carbon layer 14, activated carbon
Fixed mount 13 is provided with air inlet and gas outlet, and the air inlet of activated carbon fixed mount 13 is connected with the gas outlet of HEPA filter boxs 10, with
Receive the air-flow through first time filtering for conveying to come from HEPA filter boxs 10.The gas outlet of activated carbon fixed mount 13 and motor 26
Air inlet is connected, and active carbon layer 14 is arranged between the air inlet of activated carbon fixed mount 13 and gas outlet, to cause to enter activity
The air-flow of charcoal fixed mount 13 is by the filtration treatment of active carbon layer 14.Wherein activated carbon fixed mount 13 is provided with multiple through holes, the plurality of
Through hole is connected as the gas outlet of activated carbon fixed mount 13 with the air inlet of motor 26.
In the present embodiment, active carbon layer 14 is formed by active carbon build-up, with adsorptivity higher, can be by through for the first time
Residual dust and peculiar smell adsorption in the air-flow of filtration treatment carry out second filtering in active carbon layer 14 to the air-flow, from
And obtain clean gas.
The air inlet of motor 26 is connected with the gas outlet of activated carbon filter box 12, specifically, the gas outlet of activated carbon filter box 12
It is connected with the air inlet of motor 26 by tracheae.Wherein motor 26 is used to from the gas outlet of activated carbon filter box 12 extract gas out.
Also from airscoop shroud 1 be pumped into this gas circulation purifier the gas outside this gas circulation purifier by motor 26, is gas
The circulation of the gas in body circulation purifier provides power.Further, motor 26 is controlled by frequency converter 22, can be according to reality
Working order adjusts the rotating speed size of motor 26, so as to adjust air velocity of the gas in this gas circulation purifier.
The air inlet of the second unidirectional gas blocking valve 18 is connected with the gas outlet of motor 26, by gas going out from motor 26
Gas port is expelled in the forming seal cabin of selective laser melting systems.Discharged from the exhaust outlet 17 of the second unidirectional gas blocking valve 18
Gas for clean dried gas.Wherein, the second unidirectional gas blocking valve 18 includes second gas closing valve chest, the second bullet
Spring fixed mount, second spring and the second inlet piston.Wherein second gas closing valve chest is provided with gas outlet and air inlet, second
The air inlet of gas confinement valve chest is connected with the gas outlet of motor, and second gas close the gas outlet and selective laser of valve chest
Melting systems forming seal cabin connection, second spring fixed mount setting second gas closing valve chest air inlet at, and
Second spring fixed mount is connected by second spring with the second inlet piston, and the second inlet piston is removably set on second gas
Close in the inner chamber of valve chest.The inner chamber of wherein second gas closing valve chest is in round table-like, and second gas close valve chest
Inner chamber edge in 45 degree settings, the close motor 26 in the small one end of internal diameter of the inner chamber of second gas closing valve chest.Ying Li
Solution, second gas close valve 18 and close same or similar in the structure of valve 3 with first gas, are prevented from gas backflow.The
It is extraneous when two gas blocking valves 18 and first gas closing valve 3 are also prevented from this gas circulation purifier and are stopped
Powder gas are permeated into motor 26, activated carbon filter box 12 and filter core even gas distribution device 8.
It should be understood that the second inlet piston closely agrees with the inner chamber of second gas closing valve chest, i.e. the second air inlet is lived
Fill in and be tightly connected with the luminal border of second gas closing valve chest, improve the air-tightness of the second unidirectional gas blocking valve 18.Value
Obtain it is noted that be divided into the 3rd sealing inner chamber and the 4th sealing for the inner chamber of second gas closing valve chest by the second inlet piston
Chamber, i.e. second gas closing valve chest are provided with air inlet, the inner chamber of second gas closing valve chest and the second inlet piston and are formed
3rd sealing inner chamber, second gas closing valve chest is provided with gas outlet, the inner chamber of second gas closing valve chest and the second air inlet
Piston forms the 4th and seals inner chamber.
In the present embodiment, the inner chamber of second gas closing valve chest is in round table-like, and the edge of its inner chamber sets in 45 degree
Put, the second inlet piston can be pumped by second spring in the inner ring of second spring fixed mount.Further,
Two spring anchorage brackets are evenly distributed with some circular apertures around its spring attachment positions.Air-flow can be from some circular apertures
Exit into the inner chamber that second gas close valve chest.Specifically, when air-flow is by some circles on second spring fixed mount
When aperture enters the inner chamber of second gas closing valve chest, the pressure of the inner chamber of second gas closing valve chest becomes big, i.e., and the 3rd
The pressure of the pressure more than the 4th sealing inner chamber of inner chamber is sealed, promotes the second inlet piston up (to be melted towards selective laser
The forming seal cabin locality of system) motion, to cause the second inlet piston away from the position of some circular apertures, now the
Two inlet pistons are not contacted with the edge of the inner chamber of second gas closing valve chest, gap occur, and gas flows out from gap again,
Enter via gas outlet again in the forming seal cabin of selective laser melting systems.When no gas enters or the 3rd sealing inner chamber
Pressure less than the 4th sealing inner chamber pressure when, the second inlet piston is resetted by the effect of second spring, and the second air inlet is lived
Plug and the EDGE CONTACT of the inner chamber of second gas closing valve chest, will be arranged on some small sircle holes around second spring fixed mount
Closing, to prevent gas backflow.That is, can not be expelled into the air-flow in the second unidirectional gas blocking valve 18 outer
Portion.
The test side of first gas differential pressure pickup 23 is separately positioned on the air inlet and gas outlet of HEPA filter boxs 10, is used
Draught head between the air inlet of detection HEPA filter boxs 10 and gas outlet.The number that first gas differential pressure pickup 23 will be detected
Controller 21 is sent to according to by data wire, controller 21 is in surveyed data output to display 19.When draught head be more than or
When person is less than the value for specifying, illustrate that HEPA filter screens 9 occur to block or damaged, controller 21 exports alarm signal to alarm 20
Number, the warning reminding personnel of alarm 20 clear up or change filter core, while controller 21 exports corresponding control letter to frequency converter 22
Number, motor 26 is stopped, so that gas circulation purifier is stopped in time.
The test side of second gas differential pressure pickup 24 is separately positioned on the air inlet and gas outlet of activated carbon filter box 12,
For detecting the draught head between the air inlet of activated carbon filter box 12 and gas outlet.Second gas differential pressure pickup 24 is used for real-time
The draught head of the both sides of detection activated carbon filter box 12, to determine whether activated carbon filter box 12 blocks.Second gas differential pressure pickup 24
The data that will be detected send controller 21 to by data wire, and controller 21 is in surveyed data output to display 19.Control
The warning system of device processed 21, display 19 and alarm 20 composition is used to remind personnel to change activated carbon or queueing problem.Specifically
Ground, when the draught head of the both sides of activated carbon filter box 12 is more than or less than the value for specifying, illustrates that activated carbon filter box 12 is blocked
Or it is damaged, controller 21 is to the output alarm signal of alarm 20, the warning reminding personnel of alarm 20 cleaning or replacing activity
Carbon filtration case 12, while controller 21 exports corresponding control signal to frequency converter 22, makes motor 26 be stopped, so that gas is followed
Ring purifier is stopped in time.
The test side of third gas differential pressure pickup 25 is separately positioned on the air inlet and gas outlet of motor 26, for examining
Draught head between the air inlet of measured motor 26 and gas outlet.Third gas differential pressure pickup 25 is used to detect that motor 26 enters outlet
Draught head between mouthful, to judge whether motor 26 is working properly, while the number of the feedback controller 21 of gas differential pressure sensor 25
According to the control for modifier controller 21 to frequency converter 22, frequency converter 22, motor 26, gas differential pressure sensor 25 and controller
21 form closed-loop control system, strengthen control effect.Specifically, when the draught head between the air inlet of motor 26 and gas outlet is more than
Or during less than the value for specifying, the air inlet and gas outlet for illustrating motor 26 occur to block or damaged, and controller 21 is to alarm
The output alarm signal of device 20, the warning reminding personnel of alarm 20 cleaning or replacing motor 26, while controller 21 is to frequency converter
22 output corresponding control signals, make motor 26 be stopped, so that gas circulation purifier is stopped in time.
In the present embodiment, this gas circulation purifier also includes the dual-purpose pipe 5 of air inlet dust and dust collection bottle 7, wherein
The dual-purpose pipe 5 of air inlet dust is provided with first mouth of pipe, second mouth of pipe and the 3rd mouth of pipe, first mouth of pipe and the first unidirectional gas blocking valve 3
Gas outlet 4 connect, second mouth of pipe is connected with the air inlet of filter core even gas distribution device 8, and the 3rd mouth of pipe and dust collection bottle 7 connects
Connect, with by the metallic dust in the collection gas of dust collection bottle 7.It should be understood that dust collection bottle 7 is provided with dust collection valve, use
Fallen into dust collection bottle 7 in control metallic dust.When amount such as metallic dust reaches predetermined value, dust collection valve is beaten automatically
Open, dust collection bottle 7 is automatic to collect metallic dust.Wherein, the dual-purpose pipe 5 of air inlet dust, dust collection valve 6 and dust collection bottle 7
The method for combining dust, metallic dust air-flow entered HEPA filter boxs 10 under being both easy to working condition, was also beneficial under holding state,
The collection of metallic dust.
In the specific implementation, startup is applied to SLM has the gas circulation purifier of Pressure difference feedback function to the present invention；The
One gas differential pressure sensor 23, second gas differential pressure pickup 24 and third gas differential pressure pickup 25 are opened, and are read in real time
Draught head between HEPA filter boxs 10, activated carbon filter box 12 and the air inlet/outlet of motor 26；Start motor 26, be gas circulation purifier
In gas circulation provide power.
Under normal operating conditions, circulation process of the metallic dust air-flow in gas circulation purifier can be concluded such as
Under.
The metallic dust air-flow that selective laser melting systems are produced promotes the first unidirectional gas blocking valve 3 by airscoop shroud 1
The first inlet piston overcome the first spring movement to equilbrium position, air-flow passes sequentially through the first inlet piston outside, after inflow
The dual-purpose pipe 5 of continuous air inlet dust；, then by the air inlet of filter core even gas distribution device 8, uniform divided flows are extremely for metallic dust air-flow
Each fan-shaped air flue, under the guiding of each fan-shaped air flue cavity wall, filters from the top gas outlet of even distribution device shell into HEPA
Case 10, is evenly distributed in the surface of HEPA filter screens 9, and in completing air-flow at HEPA filter screens 9 metallic dust first time filtering,
Filter out most dust；Meanwhile, the Electro-static Driven Comb net 11 being in close contact with HEPA filter screens 9 can fall metal powder with quick release
The accumulation of static electricity that dust and gas stream is produced with the mantle friction of HEPA filter screens 9；By the cleaner gas of first time filtering, in HEPA filters
It is complete under the guiding of the inside air flue of net 9, then by the activated carbon fixed mount 13 and active carbon layer 14 in the middle of activated carbon filter box 12
Into second filtering of air-flow, continue to improve the cleanliness factor of air-flow；By the clean gas after filtering motor 26 driving
Under, the inlet, outlet of motor 26 is passed sequentially through, then by the second unidirectional gas blocking valve 18, be admitted to by exhaust outlet 17
Laser is chosen in the close cabin of shaping or the air of thawing system.
In the gas-recycling plant course of work, gas differential pressure sensor 23,24,25, real-time detection HEPA filter screens 9, activity
Draught head between carbon filtration case 14 and the air inlet/outlet of motor 26, and data are sent to controller 21, controller by data wire
Surveyed data output to display 19.When the draught head that first gas differential pressure pickup 23 is measured is more than or less than regulation
During value, illustrate that HEPA filter screens 9 occur to block or damaged, controller 21 is reported to the output alarm signal of alarm 20, alarm 20
Filter core is changed in alert prompting personnel cleaning, while controller exports corresponding signal to frequency converter 22, motor 26 is stopped,
So that gas circulation purifier is stopped in time.When the draught head that second gas differential pressure pickup 24 is measured is more than regulation
During value, illustrate that activated carbon filter box 12 is blocked, remind personnel to change activated carbon or exclusion by display 19 and alarm 20
Problem.By third gas differential pressure pickup 25, it can be determined that whether motor 26 is working properly, while third gas pressure difference sensing
The data of the feedback controller 21 of device 25, for strengthening control effect of the controller 21 to frequency converter 22
To sum up, the present invention with the above mentioned technical proposal：Using filter core even gas distribution device, metal powder dust and gas are shunted
Flow and make it uniformly by HEPA filter screens, it is to avoid dust air-flow is selectively uneven by HEPA filter screens, alleviates filter screen
Local dust rapid accumulation obstruction and filter screen abrasion, improve the filter efficiency of filter screen；Meanwhile, filter core even gas distribution device
The inclined design of inner chamber also contributes to metallic dust and is tumbled into dust collection bottle by self gravitation, improves metallic dust
Collection efficiency.
The present invention uses Electro-static Driven Comb net, and structure is special, by some metal donuts and the net constituted with each annulus
Network structure, is easy to quick release to fall the electrostatic at each position of HEPA screen surfaces, prevents metallic dust from exploding.
The present invention uses gas differential pressure sensor, is entered by real-time detection HEPA filter screens, activated carbon filter box and three phase electric machine
Draught head between gas outlet, obtains the working condition of corresponding site in real time, and send data to control by data wire
Device, controller reminds staff to check in time and queueing problem surveyed data output to display.
This gas circulation purifier has purification efficiency higher, and purification gas cleanliness factor is high, filter screen long service life,
Be easy to dust collection, the advantages of Electro-static Driven Comb is convenient and swift；Good seal performance, is prevented from the metallic dust diffusion of internal gathering
To the external world, and simple structure low cost；Realtime control is good, can in time obtain the situation of each key position, discharge lock
Determine relevant issues, the running status for maintaining device good.
Embodiments of the present invention are the foregoing is only, the scope of the claims of the invention is not thereby limited, it is every using this
Equivalent structure or equivalent flow conversion that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other correlations
Technical field, is included within the scope of the present invention.
Claims (10)
1. a kind of SLM that is applied to has the gas circulation purifier of Pressure difference feedback function, it is characterised in that including：
Airscoop shroud, for being input into gas；
First unidirectional gas blocking valve, its air inlet is connected with the airscoop shroud, so as to obtain gas from the described first unidirectional gas
Close the air inlet input of valve；
Filter core even gas distribution device, its air inlet is connected with the gas outlet of the described first unidirectional gas blocking valve, with to from described
The gas that the gas outlet of the first unidirectional gas blocking valve is input into is shunted, so that it is uniform equal from the filter core gas to obtain gas
The gas outlet output of cloth apparatus；
HEPA filter boxs, the gas outlet with the filter core even gas distribution device is connected, for from the filter core even gas distribution device
The gas that is exported of gas outlet carry out first time filtering；
Activated carbon filter box, its air inlet is connected with the gas outlet of the HEPA filter boxs, for the outlet from the HEPA filter boxs
The gas that mouth is exported carries out second filtering；
Motor, its air inlet is connected with the gas outlet of the activated carbon filter box, for the going out from the activated carbon filter box by gas
Gas port is extracted out；
Second unidirectional gas blocking valve, its air inlet is connected with the gas outlet of the motor, by gas going out from the motor
Gas port is expelled in the forming seal cabin of the selective laser melting systems.
2. gas circulation purifier according to claim 1, it is characterised in that also including the dual-purpose pipe of air inlet dust and powder
Dirt receiving flask, wherein the dual-purpose pipe of air inlet dust is provided with first mouth of pipe, second mouth of pipe and the 3rd mouth of pipe, first mouth of pipe with
The gas outlet connection of the first unidirectional gas blocking valve, the air inlet of second mouth of pipe and the filter core even gas distribution device
Connection, the 3rd mouth of pipe is connected with dust collection bottle, with by the metal powder in dust collection bottle collection gas
Dirt.
3. gas circulation purifier according to claim 1 and 2, it is characterised in that also passed including first gas pressure difference
Sensor, its test side is separately positioned on the air inlet and gas outlet of the HEPA filter boxs, for detecting the HEPA filter boxs
Draught head between air inlet and gas outlet.
4. gas circulation purifier according to claim 3, it is characterised in that also including second gas pressure difference sensing
Device, its test side is separately positioned on the air inlet and gas outlet of the activated carbon filter box, for detecting the activated carbon filter box
Air inlet and gas outlet between draught head.
5. gas circulation purifier according to claim 4, it is characterised in that also including third gas pressure difference sensing
Device, its test side is separately positioned on the air inlet and gas outlet of the motor, for detecting the air inlet of the motor and going out
Draught head between gas port.
6. gas circulation purifier according to claim 1, it is characterised in that the first unidirectional gas blocking valve includes the
One gas confinement valve chest, the first spring anchorage bracket, the first spring and the first inlet piston, wherein first gas closing valve
Housing is provided with gas outlet and air inlet, and the air inlet of the first gas closing valve chest is connected with the airscoop shroud, and described the
The gas outlet of one gas confinement valve chest is connected with the air inlet of the filter core even gas distribution device, first spring anchorage bracket
Be arranged at the air inlet of first gas closing valve chest, and first spring anchorage bracket by first spring with
The first inlet piston connection, wherein the inner chamber of first gas closing valve chest is in round table-like, and the first gas
The edge of inner chamber of valve chest is closed in 45 degree of settings, one end that the internal diameter of the inner chamber of the first gas closing valve chest is small is leaned on
The nearly airscoop shroud.
7. gas circulation purifier according to claim 1, it is characterised in that the filter core even gas distribution device includes
Even distribution device shell and uniform air inlet dividing plate, the even distribution device shell is provided with air inlet and gas outlet, outside the even distribution device
The air inlet of shell is connected with the gas outlet of the described first unidirectional gas blocking valve, the gas outlet of the even distribution device shell with it is described
The air inlet connection of HEPA filter boxs, wherein the uniform air inlet dividing plate is arranged on the air inlet top of the even distribution device shell,
To cause that the gas being input into from the air inlet of the even distribution device shell is blocked by the uniform air inlet dividing plate, with to from described
The gas that the air inlet of even distribution device shell is input into is shunted.
8. gas circulation purifier according to claim 1, it is characterised in that the HEPA filter boxs include housing,
HEPA filter screens and Electro-static Driven Comb net, the housing are provided with air inlet and gas outlet, the air inlet of the housing and the filter core gas
The gas outlet connection of body even distribution device, the gas outlet of the housing is connected with the air inlet of the activated carbon filter box, wherein described
HEPA filter screens are circumferentially positioned at outside the gas outlet of the housing, for being carried out to the gas being input into from the air inlet of the housing
Filter for the first time, and the Electro-static Driven Comb net is arranged in the middle of the HEPA filter screens, for discharging in the HEPA screen surfaces
Each position electrostatic.
9. gas circulation purifier according to claim 1, it is characterised in that the activated carbon filter box includes activated carbon
Fixed mount and active carbon layer, the activated carbon fixed mount are provided with air inlet and gas outlet, the air inlet of the activated carbon fixed mount
Gas outlet with the HEPA filter boxs is connected, and the gas outlet of the activated carbon fixed mount is connected with the air inlet of the motor, its
Described in active carbon layer be arranged between the air inlet of the activated carbon fixed mount and gas outlet.
10. gas circulation purifier according to claim 1, it is characterised in that the second unidirectional gas blocking valve includes
Second gas closing valve chest, second spring fixed mount, second spring and the second inlet piston, wherein the second gas are closed
Valve chest is provided with gas outlet and air inlet, and air inlet and the gas outlet of the motor of the second gas closing valve chest connect
Connect, the gas outlet of the second gas closing valve chest is connected with the forming seal cabin of the selective laser melting systems, described
Second spring fixed mount setting is at the air inlet of second gas closing valve chest, and the second spring fixed mount passes through
The second spring is connected with second inlet piston, wherein the inner chamber of second gas closing valve chest is in round table-like,
And the edge of the inner chamber of the second gas closing valve chest is in 45 degree of settings, the inner chamber of the second gas closing valve chest
The small one end of internal diameter is near the motor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710167858.0A CN106731428A (en) | 2017-03-20 | 2017-03-20 | A kind of SLM that is applied to has the gas circulation purifier of Pressure difference feedback function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710167858.0A CN106731428A (en) | 2017-03-20 | 2017-03-20 | A kind of SLM that is applied to has the gas circulation purifier of Pressure difference feedback function |
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| CN106731428A true CN106731428A (en) | 2017-05-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108958341A (en) * | 2018-09-21 | 2018-12-07 | 天津镭明激光科技有限公司 | A kind of increasing material manufacturing laser formation equipment atmosphere control system and method |
| CN109045855A (en) * | 2018-09-05 | 2018-12-21 | 成都登特牙科技术开发有限公司 | Laser 3D printing flue dust dry filter device and method and filtration core replacing options |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721126A (en) * | 2012-06-15 | 2012-10-10 | 天津大学 | Electrostatic filter composite air purification device |
| CN103301706A (en) * | 2013-06-18 | 2013-09-18 | 江苏泰格油墨有限公司 | Pigment dust collection and solvent absorbing device applied to color chip production |
| CN103432845A (en) * | 2013-09-12 | 2013-12-11 | 青岛沃尔德环保设备制造安装有限公司 | Automatic pulse blowback welding smoke and dust purifier |
| CN103949130A (en) * | 2014-04-30 | 2014-07-30 | 中国国旅贸易有限责任公司 | Air filtration device |
| CN104353832A (en) * | 2014-10-24 | 2015-02-18 | 华南理工大学 | Method and equipment of sealed chamber atmosphere deoxygenization and circulating purification for metal 3D printer |
| CN204254766U (en) * | 2014-11-20 | 2015-04-08 | 谢辉 | Ceiling type nanometer air circulating purifier |
| CN105252004A (en) * | 2015-10-19 | 2016-01-20 | 华南理工大学 | Smoke dust detection and purifying method and device applied in 3D printing sealed cabin |
| CN105538169A (en) * | 2016-01-15 | 2016-05-04 | 广东金方圆安全技术检测有限公司 | Dust explosion protection system of shot blasting and sand blasting equipment |
| CN205379769U (en) * | 2016-02-02 | 2016-07-13 | 南阳中天防爆电气有限公司 | A dust collection device for explosion hazard area |
-
2017
- 2017-03-20 CN CN201710167858.0A patent/CN106731428A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721126A (en) * | 2012-06-15 | 2012-10-10 | 天津大学 | Electrostatic filter composite air purification device |
| CN103301706A (en) * | 2013-06-18 | 2013-09-18 | 江苏泰格油墨有限公司 | Pigment dust collection and solvent absorbing device applied to color chip production |
| CN103432845A (en) * | 2013-09-12 | 2013-12-11 | 青岛沃尔德环保设备制造安装有限公司 | Automatic pulse blowback welding smoke and dust purifier |
| CN103949130A (en) * | 2014-04-30 | 2014-07-30 | 中国国旅贸易有限责任公司 | Air filtration device |
| CN104353832A (en) * | 2014-10-24 | 2015-02-18 | 华南理工大学 | Method and equipment of sealed chamber atmosphere deoxygenization and circulating purification for metal 3D printer |
| CN204254766U (en) * | 2014-11-20 | 2015-04-08 | 谢辉 | Ceiling type nanometer air circulating purifier |
| CN105252004A (en) * | 2015-10-19 | 2016-01-20 | 华南理工大学 | Smoke dust detection and purifying method and device applied in 3D printing sealed cabin |
| CN105538169A (en) * | 2016-01-15 | 2016-05-04 | 广东金方圆安全技术检测有限公司 | Dust explosion protection system of shot blasting and sand blasting equipment |
| CN205379769U (en) * | 2016-02-02 | 2016-07-13 | 南阳中天防爆电气有限公司 | A dust collection device for explosion hazard area |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109045855A (en) * | 2018-09-05 | 2018-12-21 | 成都登特牙科技术开发有限公司 | Laser 3D printing flue dust dry filter device and method and filtration core replacing options |
| CN109045855B (en) * | 2018-09-05 | 2019-06-11 | 成都登特牙科技术开发有限公司 | Laser 3D printing flue dust dry filter device and method and filtration core replacing options |
| CN108958341A (en) * | 2018-09-21 | 2018-12-07 | 天津镭明激光科技有限公司 | A kind of increasing material manufacturing laser formation equipment atmosphere control system and method |
| CN108958341B (en) * | 2018-09-21 | 2023-10-27 | 天津镭明激光科技有限公司 | Atmosphere control system and method for additive manufacturing laser forming equipment |
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