CN108115130A - Gas circulation for selective laser fusing manufacture purifies equipment of working continuously - Google Patents
Gas circulation for selective laser fusing manufacture purifies equipment of working continuously Download PDFInfo
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- CN108115130A CN108115130A CN201611088913.9A CN201611088913A CN108115130A CN 108115130 A CN108115130 A CN 108115130A CN 201611088913 A CN201611088913 A CN 201611088913A CN 108115130 A CN108115130 A CN 108115130A
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- filter
- gas
- outlet
- air inlet
- equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/70—Gas flow means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
- B22F10/322—Process control of the atmosphere, e.g. composition or pressure in a building chamber of the gas flow, e.g. rate or direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/70—Recycling
- B22F10/73—Recycling of powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of gas circulations for selective laser fusing manufacture to purify equipment of working continuously, the indoor air inlet of shaping including being connected to SLM device, return air inlet and it is connected to filter device between the two, the filter device includes rough filtering device and fine filtering device, and the outlet air port of rough filtering device is connected to fine filtering device by pipeline, the fine filtering device includes at least two filter cylinders, the outlet air port is respectively communicated to two filter cylinders by refined filtration air intake branch, connection is provided on the every refined filtration air intake branch or ends the pneumatic operated valve that filter cylinder is turned on outlet air port.The circulation purifier can carry out the replacement of filter core and the processing of waste material under normal process operating status, to reduce the waste of time and inert gas caused by shutting down replacement filter core.
Description
Technical field
It is net more particularly to a kind of gas circulation for selective laser fusing manufacture the present invention relates to material increasing field
Change equipment of working continuously.
Background technology
Selective laser melting SLM（Selective Laser Melting）Technology is a kind of side of metal increasing material manufacturing
Method.The rapidoprint that SLM technologies use is metal powder that grain size is about 15 μm -50 μm.In process, laser
Laser is sent, is irradiated to after optical system is handled in processing plane, under control system control, laser is according to being directed into system
In the contour curve that is calculated of stl file, the powder bed that metal powder is paved into is scanned, metal powder is made to melt to be formed into
Product.
During laser scanning powder bed, laser irradiation under metal powder be easy under the high temperature conditions in air
Oxygen occur oxidation reaction, it is therefore desirable to the inert gases pair such as nitrogen, the argon gas of high-purity are passed through in closed molding room
Laser scanning process carries out inert gas shielding, prevents metal powder high-temperature oxydation.But form the metal powder of powder bed still
Partial oxidation can be brought into molding room, molding room can not accomplish positive confinement in itself in addition, therefore, can there are one in molding room
A bit due to flue dust caused by oxidization of metal powder.Simultaneously as the percussion of laser energy and shaping indoor air flow
Factors, the substantial amounts of flue dust such as disturbance are attached on powder bed, directly affect absorption of the powder bed surface to laser energy, final to influence gold
Belong to the quality of molded part.If the protective gas with flue dust is vented directly to outside molding room, protective gas is not only caused
Waste, and cause the pollution of environment.Therefore, it is necessary to carry out circularly purifying to being molded indoor gas.
Authorization Notice No. is that one kind is disclosed in the patent document of CN201420623918.7 for metal 3D printing secret
The deoxygenation of batten down atmosphere and the filter cylinder of circularly purifying.In its technical solution：It is molded after indoor high dusty gas enters filter cylinder, passes through
The filtration of filter core in filter cylinder enters back into refined filtration filter core and carries out careful filtering, and purified protective gas is reentered into
In type room, the circularly purifying in 3D operations is realized.
During actual processing, the filter core of refined filtration part needs to carry out more the cleaning system equipment at interval of a period of time
It changes, after filter core reaches operating limit, the pressure difference alarm on filter core can alarm, and must be simultaneously stopped be molded indoor beat at this time
Print acts and cleaning system equipment, to replace the filter core of refined filtration.Again before restarting equipment, it can cause to purify due to replacing filter core
Bring oxygen in system equipment into, need to carry out deoxygenation again to cleaning system equipment and molding room before being again started up, take compared with
It grows and needs to shut down, influence production efficiency, part inert gas can be wasted by carrying out deoxygenation to molding room again.
The content of the invention
It works continuously and sets it is an object of the invention to provide a kind of gas circulation purification for selective laser fusing manufacture
Standby, which can carry out the replacement of filter core and the processing of waste material under normal process operating status, to reduce
The waste of time and inert gas caused by shutting down replacement filter core.
To achieve the above object, the present invention provides following technical solutions：A kind of gas for selective laser fusing manufacture
Body circulation purification is worked continuously equipment, the indoor air inlet of shaping, return air inlet including being connected to SLM device and is connected to two
Filter device between person, the filter device includes rough filtering device and fine filtering device, and the outlet air port of rough filtering device passes through
Pipeline is connected to fine filtering device, and the fine filtering device includes at least two filter cylinders, and the outlet air port passes through refined filtration air intake branch
Each filter cylinder is respectively communicated to, connection is provided on the every refined filtration air intake branch or ends what filter cylinder was turned on outlet air port
Pneumatic operated valve.
By using above-mentioned technical proposal, air inlet and return air inlet are connected to the molding room of SLM device, be respectively completed by into
The function that the gas of the indoor band purification of type introduces and purified air is drawn, rough filtering device draw air inlet with fine filtering device
The gas entered carries out classified filtering, since the replacement frequency of fine filtering device is high, at least sets two filter cylinders here, the two is in case one
With, refined filtration gas is treated in the introducing of refined filtration air intake branch on each filter cylinder, by air pressure promote the spool of pneumatic operated valve can open or
Person ends the corresponding filter cylinder of the pneumatic operated valve, to select whether it enters working condition.Aluminium in the filter cylinder of work at present reaches more
It changes and the pneumatic operated valve corresponding to it in limited time, is driven to block corresponding refined filtration air intake branch, oxygen is prevented to enter, and is opened simultaneously
In addition the refined filtration air intake branch at least one filter cylinder, makes it into working condition, to ensure that SLM device can work on
And the persistent loop of internal gas is kept to purify.
The present invention is further arranged to：The rough filtering device include cyclone dust collectors, the cyclone dust collectors include with into
Air port by the air inlet port of pipeline connection, with through filtering outlet air port and the dedusting cylinder that device connects, the dedusting cylinder
Lower end ash discharging hole is set, the cyclone dust collectors are connected with aggregate tank by ash discharging hole.
By taking above-mentioned technical proposal, the gas in coarse filtration link can be mingled with substantial amounts of oxidation dust and printing
Metal powder, also, even if the dust size formed after peasant household's Powder Oxidation is less than the grain size of the metal powder of script,
Therefore by the excellent effect of settling of cyclone dust collectors, the larger metal powder of grain size is deposited to ash discharging hole, and enters collection
Batch can carries out material recycle, and the material in this aggregate tank can reuse after screening, to save metal powder, prevent
Powder is brought to gas circulation cleaning equipment and is lost.
The present invention is further arranged to：Gas control assembly, the gas are provided between the ash discharging hole and aggregate tank
Control assembly includes at least one butterfly valve being arranged on ash discharging hole and the tube body being connected between butterfly valve and aggregate tank, described
Inflating port is provided on aggregate tank, oxygen outlet is provided on the tube body.
By using above-mentioned technical proposal, the metal powder in aggregate tank is collected full rear, it is necessary to remove aggregate tank by material
It pours, when removing in period of aggregate tank and aggregate pipe being installed again, may all bring oxygen into filter device,
The butterfly valve of setting can block ash discharging hole, enter cyclone dust collectors from ash discharging hole to prevent from removing air after aggregate tank；Pass through butterfly
After valve blocks ash discharging hole, the aggregate tank reinstalled in filter device can carry out local row by inflating port and oxygen outlet
External inert gas is filled with aggregate tank by inflating port, and gradually squeezes out its internal air directly from oxygen outlet by oxygen
It is met the requirements to oxygen concentration.
The present invention is further arranged to：The filter cylinder bottom is provided with ash discharging hole, is provided on the ash discharging hole and filter cylinder
The aggregate tank of connection, is provided with gas control assembly between the ash discharging hole and aggregate tank, the gas control assembly is included extremely
Few first butterfly valve being arranged on ash discharging hole and the tube body being connected between the first butterfly valve and aggregate tank, the aggregate tank
On be provided with inflating port, be provided with oxygen outlet on the tube body.
By using above-mentioned technical proposal, filter cylinder is the filter element of fine filtering device, and ash discharging hole discharge is oxidation
Dust, full of material is poured, it is necessary to remove aggregate tank after dust in the aggregate tank as dust, remove aggregate tank when
Between when aggregate pipe is installed in section and again, may all bring oxygen into filter device, the first butterfly valve of setting can block
Ash discharging hole enters cyclone dust collectors to prevent from removing air after aggregate tank from ash discharging hole；After ash discharging hole being blocked by the first butterfly valve,
The aggregate tank reinstalled in filter device can carry out local deoxygenation by inflating port and oxygen outlet, i.e., by external inertia
Gas is filled with aggregate tank by inflating port, and gradually its internal air is squeezed out from exhaust outlet and is wanted up to oxygen concentration meets
It asks.
The present invention is further arranged to：The second butterfly valve, the top of the filter cylinder are additionally provided between the tube body and aggregate tank
Portion is provided with exhaust outlet.
By using above-mentioned technical proposal, filter cylinder needs replacing internal filter core after blocked area reaches the upper limit, replaces
Filter cylinder after filter core accesses again, can bring air into, at this point, the second butterfly valve of shut-off and the first butterfly valve of opening, local by aggregate tank
Oxygen outlet during deoxygenation is filled with mouth as inert gas, then is discharged inner air by the exhaust outlet of cartridge top portion.Draw
Enter the second butterfly valve, it can cannot be independently of the independent deoxygenation of aggregate tank to avoid barrel.
The present invention is further arranged to：The filter cylinder from top to bottom includes end socket, outer barrel and cone bucket, the end socket with it is outer
Cylinder is fixed, is detachably connected between the cone bucket and outer barrel by tensing hasp.
By using above-mentioned technical proposal, cone bucket is arranged at outer barrel bottom by tensing hasp, replaces the filter core in filter cylinder
When, it can remove the opening that outer barrel after cone bucket exposes by tensing the lower cone bucket of hasp dismounting, and passing through and change internal core.
The present invention is further arranged to：It is responsible for and connected by refined filtration outlet between the fine filtering device and return air inlet, it is described
A reversal valve is additionally provided on refined filtration outlet supervisor and what is connected with reversal valve diffuses air inlet pipe, the end for diffusing air inlet pipe
Portion forms diffusion mouth.
By using above-mentioned technical proposal, gas circulation purification work continuously equipment when accessing SLM device, it is necessary to carry out
Deoxygenation, at this point, diffusion mouth can purify the gas vent of equipment in itself of working continuously as gas circulation, without gas is led to
It crosses return air inlet and enters gas circulation purification equipment of working continuously and carry out deoxygenation again, promote deoxygenation efficiency.
The present invention is further arranged to：Filter box is provided on the diffusion mouth, filter be provided on box at least one piece it is removable
The baffle unloaded, the filter box inside filling filter cotton.
By using above-mentioned technical proposal, filter cotton is filled in filter box, the gas that can be discharged to diffusion mouth be filtered,
Prevent the gas of discharge from carrying dust polluting environment.
The present invention is further arranged to：Each filter cylinder is connected to refined filtration outlet by refined filtration going out gas branch pipe and is responsible for,
And pass through refined filtration outlet supervisor and be connected to wind turbine, the outlet air connector of the wind turbine is connected to return air inlet by air return pipeline, institute
It states and throttle valve is provided on air return pipeline.
By using above-mentioned technical proposal, the gas disturbance of SLM device can disturb the progress of print job, therefore, return air
The gas flow rate of mouth into SLM device needs to control, and by the setting of throttle valve, can tune up or turn down if necessary entrance
The air-flow size of the molding room of SLM device is molded indoor air pressure to be adapted to Operating condition adjustment.
The present invention is further arranged to：The support construction of support cabinet, the support construction bag are set below the cabinet
Several adjustable foot cups are included, each adjustable foot cup is correspondingly arranged a castor.
By using above-mentioned technical proposal, active blowback cleaning equipment can be moved to by castor at SLM device, really
After setting mobile position, fixed using foot cup is adjusted.In addition, height can also be adjusted to adjust active blowback by adjusting foot cup
The relative altitude of cleaning equipment and SLM device, it is easy to use.
In conclusion air inlet and return air inlet are connected to the molding room of SLM device, it is respectively completed that will to be molded indoor band net
The function that the gas of change introduces and purified air is drawn, rough filtering device carry out the gas that air inlet introduces with fine filtering device
Classified filtering since the replacement frequency of fine filtering device is high, at least sets two filter cylinders here, and the two is in case a use, each filter cylinder
On the introducing of refined filtration air intake branch treat refined filtration gas, promote the spool of pneumatic operated valve that can open or end this by air pressure pneumatic
The corresponding filter cylinder of valve, to select whether it enters working condition.Aluminium in the filter cylinder of work at present, which reaches, to be replaced in limited time, driving
Pneumatic operated valve corresponding to it blocks corresponding refined filtration air intake branch, and oxygen is prevented to enter, and opens other at least one simultaneously
Refined filtration air intake branch on a filter cylinder, makes it into working condition, to ensure that SLM device can work on and keep internal gas
The persistent loop purification of body, to realize the filter core do not shut down and replaced in filter cylinder, realization is worked continuously.
Description of the drawings
Fig. 1 is the topology view that gas circulation purifies equipment of working continuously；
Fig. 2 is the overall structure view removed after cabinet done for display air inlet pipeline；
Fig. 3 is the connection structure view of cyclone dust collectors and aggregate tank；
Fig. 4 is the overall structure view removed after cabinet done for display refined filtration part-structure；
Fig. 5 is the explosive view of left filter cylinder；
Fig. 6 is the second multi-angled view of the detonation configuration of left filter cylinder
Fig. 7 is the 3rd multi-angled view of the detonation configuration of left filter cylinder
Fig. 8 is the overall structure view removed after cabinet done for display return air inlet pipeline；
Fig. 9 is the overall structure view removed after cabinet done for display diffusion mouth pipeline structure；
Figure 10 is the front view of gas control assembly and aggregate tank.
In figure, 1, cabinet；10th, cabinet plate；11st, cabinet door；12nd, open-work；13rd, electric cabinet；2nd, support construction；20th, adjustable foot
Cup；21st, castor；3rd, diffusion mouth；30th, reversal valve；31st, box is filtered；311st, baffle；32nd, air inlet pipe is diffused；4th, air inlet；41st, three
It is logical；42nd, pneumatic operated valve；43rd, wind turbine；430th, connector is entered the wind；431st, outlet air connector；44th, throttle valve；5th, return air inlet；50th, backwind tube
Road；6th, cyclone dust collectors；60th, port is entered the wind；61st, outlet air port；62nd, dedusting cylinder；63rd, cone；64th, ash discharging hole；65th, coarse filtration
Air inlet pipe；650th, 90 ° of elbows；651st, bellows；652nd, clip gasket；7th, refined filtration air intake branch；70th, left filter cylinder；71st, right filter
Cylinder；72nd, end socket；720th, air inlet；721st, gas outlet；722a and 722b, exhaust outlet；723rd, connecting pin；73rd, outer barrel；74th, filter
Core；740th, retainer ring；741st, sunpender；742nd, wing nut；75th, bucket is bored；750th, hasp is tensed；76th, refined filtration going out gas branch pipe；77、
Refined filtration outlet is responsible for；8th, gas control assembly；80th, the first butterfly valve；81st, the second butterfly valve；82nd, oxygen outlet；9th, aggregate tank；90th, into
Material mouth；91st, upper cone；92nd, aggregate tube；93rd, inflating port；94th, observation panel；95th, transparent glass；96th, rotation and lifting pallet；97、
Gas tank；98th, scale.
Specific embodiment
The present invention is described in further detail below in conjunction with attached drawing.
Embodiment
A kind of gas circulation for selective laser fusing manufacture purifies equipment of working continuously, as shown in Figure 1, including cabinet
1 and support cabinet 1 support construction 2.
Support construction 2 includes adjustable foot cup 20 and castor 21, and the lower surface apex of cabinet 1 is separately installed with four can
Foot cup 20 is adjusted, four castors 21 are separately installed with corresponding to the inside of four adjustable foot cups 20.By castor 21 by whole
Gas circulation cleaning equipment is slid at corresponding SLM device, adjusts the height of adjustable foot cup 20, and whole gas circulation is net
Change equipment level to be fixed on ground.Castor 21 is used with the collocation of adjustable foot cup 20, is melted when needing movement for selective laser
Change manufacture gas circulation purification work continuously equipment when, by adjust foot cup 20 lift, equipment is made to be supported in ground by castor 21
Face, by the rolling of castor 21 equipment to be driven to move integrally；When equipment is moved to appointed place, adjustment downwards adjusts foot cup
20, it is allowed to prop equipment, castor 21 is made to be upwardly separated from holding state, at this point, foot cup 20 stablizes support equipment in the position.
Support construction 2 supports cabinet 1 to be fixed on ground, and cabinet 1 includes cabinet plate 10 and is positioned over inside cabinet plate 10
Filter device.Cabinet door 11 is offered on cabinet plate 10, the filter device inside cabinet 1 can be replaced and examined by cabinet door 11
It repaiies.Three open-works 12 are vertically opened up on cabinet plate 10, to draw three pipelines in filter device, formation is arranged successively up and down
Diffusion mouth 3, air inlet 4 and return air inlet 5, air inlet 4 and return air inlet 5 are connected to the molding room of SLM device, with to its inside
Inert gas carries out circularly purifying.
As shown in Fig. 2, filter device is divided into two parts of coarse filtration and refined filtration, wherein coarse filtration part is connected with air inlet 4, with
SLM device is molded indoor gas introducing to purify.Specifically, coarse filtration part includes cyclone dust collectors 6, air inlet 4
It is connected by coarse filtration air inlet pipe 65 with the air inlet port 60 of cyclone dust collectors 6.Coarse filtration air inlet pipe 65 is respectively 90 ° curved from bottom to top
First 650,651,90 ° of elbows 650 of bellows.Each 90 ° of elbows 650 are both provided with sanitation-grade clip gasket with line connection
652, whole gas circulation cleaning equipment is made to be in a closed environment, prevents the gas in gas circulation cleaning equipment from escaping
Go out.Each connecting line in gas purifying equipment is connected by 90 ° of elbows 650 and bellows 651, will no longer be gone to live in the household of one's in-laws on getting married afterwards
It states.
As shown in figure 3, cyclone dust collectors 6 include air inlet port 60, dedusting cylinder 62, cone 63, outlet air port 61 and
Ash discharging hole 64.The side wall of dedusting cylinder 62 is provided with air inlet port 60, and air inlet port 60 is connected with coarse filtration air inlet pipe 65, by work
Make the indoor gas to be clean in cabin and introduce cyclone dust collectors 6.Outlet air port 61 is provided at the roof center of dedusting cylinder 62, is gone out
Wind port 61 is to 62 internal stretch of dedusting cylinder to the position at least exceeding air inlet port 60, to prevent from introducing in air inlet port 60
Gas without cyclone dust removal i.e. enter next link.The bottom of dedusting cylinder 62 has been wholely set cone 63, and cone 63 is from upper
It is gradually reduced to lower internal diameter, until the size of the internal diameter and ash discharging hole 64 of 63 bottom of cone matches.
When dusty gas is after air inlet port 60 enters cyclone dust collectors 6, dusty gas is in dedusting cylinder 62 and cone
The inner wall of body 63 is made to rotate downward movement, until dusty gas is transported at ash discharging hole 64.Since centrifugal force acts on, flue dust
It can be separated from air-flow, and because the internal diameter of cone 63 is gradually reduced, air-flow more moves downward, and the accumulation of flue dust is got over
Easily, until flue dust is discharged by means of gravity through ash discharging hole 64.Gas after separation flue dust rotates upwards, passes through
Gas after initial filter is discharged cyclone dust collectors 6 by outlet port 61.
Ash discharging hole 64 connects gas control assembly 8, gas control assembly 8 include the first butterfly valve 80, the second butterfly valve 81 and
Bellows 651.The lower end pipeline of ash discharging hole 64 connects the first butterfly valve 80, and the first butterfly valve 80 connects one end of bellows 651, ripple
The other end of pipe 651 connects the second butterfly valve 81.Bellows 651 sets an oxygen outlet 82 close to one end of the first butterfly valve 80.Row
Oxygen probe is provided in oxygen mouth 82, the oxygen concentration of detection discharge gas in oxygen removal process, when oxygen content reaches job requirement
When, stop deoxygenation operation.Oxygen outlet 82 is to be closed in equipment normal work, with silk plug or other nozzle closure members
It is sealed.It is exhausted, it is necessary to open oxygen outlet 82 when needing to carry out local deoxygenation to aggregate tank 9, needed at this time
Silk plug is removed, to connect oxygen outlet 82 and extraneous air.
With reference to Fig. 2,81 lower section of the second butterfly valve of gas control assembly 8 sets aggregate tank 9, since the coarse granule in flue dust is miscellaneous
Matter is largely untapped metal powder, and aggregate tank 9 mainly collects the metal powder separated from cyclone dust collectors 6, is received
Metal powder after collection can reuse after treatment.Aggregate tank 9 is positioned on rotation and lifting pallet 96, rotation and lifting support
Disk 96 prevents aggregate tank 9 from being rocked when gas circulation cleaning equipment works for fixing aggregate tank 9.Rotation and lifting pallet 96 with
Fixed between the madial wall of cabinet plate 10 by L-type connector 960 and adjusting bolt 961, by adjusting bolt 961 screw or
Unscrew, finely tune the high and low position of rotation and lifting pallet 96 up and down, reliably to hold aggregate tank 9, prevent it when equipment works
It rocks.
Opening up inflating port 93 there are one being set with reference to Fig. 2, on the tank body of aggregate tank 9.The one side of cyclone dust collectors 6
Gas tank 97 is fixed with, 97 inside of gas tank, which is full of, inert gas, and the inert gas in gas tank 97 is filled from the inflating port 93 of aggregate tank 9
Enter, discharged from the oxygen outlet 82 of gas control assembly 8, realize the local deoxygenation of aggregate tank 9.97 lower section of gas tank is provided with automatically controlled
Case 13, electric cabinet 13 control gas circulation cleaning equipment.
Dusty gas is subsequently passed refined filtration part after the initial filter of coarse filtration part, specifically, such as institute in Fig. 2 and Fig. 4
Show, refined filtration part includes left filter cylinder 70 and right filter cylinder 71, and the outlet air port 61 of cyclone dust collectors 6 is divided by refined filtration air intake branch 7
Air inlet 720 not with left filter cylinder 70 and right filter cylinder 71 connects.Two refined filtration air intake branches 7 are removed by a threeway 41 with whirlwind
The outlet air port 61 of dirt device 6 connects.Be respectively arranged with pneumatic operated valve 42 on two refined filtration air intake branches 7, by closure or openness its
In a pneumatic operated valve 42, can realize that one of refined filtration air intake branch 7 is connected with air outlet 61, with select left filter cylinder 70 or
Right filter cylinder 71 works.
As shown in Figure 4, left filter cylinder 70 is identical with the structure of right filter cylinder 71, its structure is chatted by taking left filter cylinder 70 as an example
It states.
With reference to Fig. 5 and Fig. 6, left filter cylinder 70 includes end socket 72, outer barrel 73, filter core 74 and the cone being connected with 73 lower end of outer barrel
Bucket 75.The side wall of the end socket 72 of left filter cylinder 70 is provided with air inlet 720, is vertically installed at the center of 72 dome top surface of end socket
Gas outlet 721, gas outlet 721 are provided at both ends with two exhaust outlet 722a.Meanwhile the top of end socket 72 is provided with similary three
Exhaust outlet 722b, while oxygen probe is provided in exhaust outlet 722b, for the gas when carrying out local deoxygenation after replacing filter cylinder
Outlet.
Differential pressure pickup is provided with jointly at air inlet 720 and air outlet pipe 721, for monitoring air inlet during refined filtration
Pressure differential between 720 and exhaust outlet 722 when pressure difference reaches certain numerical value, stops the refined filtration work of left filter cylinder 70, and switches
It works to right filter cylinder 71.The pressure difference used in the setting of differential pressure pickup and connection mode, with existing filter plant passes
Sensor is identical to detect the occupation mode of filter element life, is not repeated herein.
The bottom of end socket 72 is internally provided with filter core 74 by 73 one end of screw fixed outer cylinder, outer barrel 73.Under filter core 74
End is supported in retainer ring 740, and retainer ring 740 is socketed on sunpender 741.The upper end of sunpender 741 is fixed in 72 top plate of end socket
At the center on surface, the lower end of sunpender 741 is free end, and the lower end socket wing nut 742 of sunpender 741 passes through wing nut
742 can be fixed on retainer ring 740 on sunpender 741.When filter core 74 reaches operating limit, it is necessary to when replacing filter core 74, unclamp
Wing nut 742, retainer ring 740 and filter core 74 take out from the lower end of sunpender 741, can easily replace filter core 74.With reference to Fig. 6
With Fig. 7, the upper end that end socket 72 is internally corresponding to sunpender 741 is provided with connecting pin 723, and the upper end of sunpender 741 passes through screw thread
Cooperation is fixed with connecting pin 723, to fix filter core 74.It is set on filter core 74 close to one end of end socket 72 for opening, so that air inlet
The gases that mouth 720 introduces can enter inside filter core 74.A cavity is formed between the inner roof wall of end socket 72 and outer roof, is connected
End 723 is arranged on inner roof wall, a circle air passing hole 724 of circumference array is provided on inner roof wall around connecting pin 723, so that mistake
The clean gas discharged after filter out of filter core 74 can be entered by air passing hole 724 and eat discharge in tracheae 721.Outer barrel 73 it is another
One end is by three tension 750 fixed cone buckets 75 of hasp, and internal diameter is gradually reduced cone bucket 75 from top to bottom, until the bottom of cone bucket 75
Radius matches with 64 size of ash discharging hole.The ash discharging hole 64 of left filter cylinder 70 connects gas control assembly 8, gas control assembly 8
The other end is connected with aggregate tank 9.It is filtered since the metal powder in flue dust is most of during coarse filtration, at left filter cylinder 70
Aggregate tank 9 mainly collects the dust in dusty gas.The structure of gas control assembly 8 and aggregate tank 9 at this is removed with whirlwind
The structure of gas control assembly 8 and aggregate tank 9 at dirt device 6 is consistent, and so it will not be repeated.
With reference to Fig. 8, dusty gas after refined filtration by left filter cylinder 70 and right filter cylinder 71 two refined filtration going out gas branch pipe 76 most
It is drawn eventually by wind turbine 43.Two pneumatic operated valves 42, two refined filtration going out gas branch pipe 76 are respectively arranged in two refined filtration going out gas branch pipe 76
It is communicated in by threeway 41 on refined filtration outlet supervisor 77.Refined filtration outlet supervisor 77 extends downwardly, the air inlet connector being finally connected to
On 430.
The outlet air connector 431 of wind turbine 43 is connected on a valve port of threeway 41, and second valve port of threeway 41 is by returning
Air pipe line 50 is connected on return air inlet 5, and throttle valve 44 is provided on air return pipeline 50, is exported to SLM for adjusting return air inlet 5 and is set
Gas flow rate in standby.Purified gas by wind turbine 46 and air return pipeline 50 drained at return air inlet 5 SLM device into
Type room.
The air inlet 4 and return air inlet 5 of gas circulation cleaning equipment are connected in the molding room of SLM device, are realized
Inert gas circularly purifying in the molding room of SLM device.
With reference to Fig. 9, the last one valve port of threeway 41 is connected with reversal valve 30, and two outlets of reversal valve 30 connect respectively
It to air inlet pipe 32 and air return pipeline 50 is diffused, is acted by the spool of reversal valve 30, selects this valve port connection of threeway 41
To diffusion mouth 3 or return air inlet 5.It is additionally provided on air return pipeline 50
Gas circulation is needed to purify equipment of working continuously before equipment access and carries out deoxygenation, in deoxygenation, is selected by reversal valve 30
Diffusion mouth 3 is selected as gas vent, until the oxygen probe that 3 inside of diffusion mouth is set is shown, gas circulation purification, which is worked continuously, to be set
The oxygen concentration of standby interior discharge complies with standard, then switches to gas by reversal valve 30 and access SLM device by return air inlet 5.
Filter box 31 is connected by diffusing air inlet pipe 32 with reversal valve 30.Box 31 is filtered as cylindrical shape, filter is provided at diffusion mouth 3
Box 31 is filtered in box 31 and is provided with filter cotton, and in oxygen removal process, the gas that filter cotton discharges diffusion mouth 3 is filtered, to prevent
The gaseous contamination environment only discharged in production process obtains the effect of clean manufacturing.When filtering material 310 reaches operating limit
When, the baffle 311 that can lead on filter cartridge 31 is replaced in time.
The concrete structure of aggregate tank 9 is as shown in Figure 10：Aggregate tank 9 includes upper cone 91, and the top of upper cone 91 offers
Feed inlet 90, the bottom of upper cone 91 have been wholely set aggregate tube 92, and there are one open for setting between upper cone 91 and aggregate tube 92
The upward inflating port 93 of mouth.It opens up an observation panel 94 on the side wall of aggregate tube 92, one is fixed with by nut on observation panel 94
Block transparent glass 95, to observe the flue dust height of accumulation in aggregate tube 92.Mark has maximum dust stratification on transparent glass 95
The scale 98 of amount, when the flue dust height arrival scale 98 of accumulation, it is necessary to which passing through gas control assembly 8 turns off bellows 651
Upper and lower ends, and clear up the flue dust accumulated in aggregate tank 9.
When reaching maximum dust stratification amount in aggregate tank 9, the second butterfly valve 81 at gas control assembly 8 is closed, by aggregate tank 9
It removes, after cleaning out the flue dust inside aggregate tank 9, aggregate tank 9 is installed in gas control assembly 8.
After 9 ash discharge of aggregate tank, the second butterfly valve 81 is opened, the first butterfly valve 80 is closed, while opens the inflation on aggregate tank 9
Mouth 93 and the oxygen outlet 82 in gas control assembly 8.The inert gas being passed through at inflating port 93 in gas tank 97, it is lazy after being passed through
Property gas is discharged at oxygen outlet 82, realizes the local deoxygenation of aggregate tank 9.
Gas circulation in the present embodiment purifies the equipment course of work of working continuously and is described below：By air inlet 4 with returning
Air port 5 is connected with the molding room of SLM device, carries out deoxygenation work to two equipment first.All valves in equipment are switched on,
Diffusion mouth 3 is selected as gas vent by reversal valve 30.Inert gas enters cyclone dust collectors 6, left filter from 4 order of air inlet
Cylinder 70 and right filter cylinder 71, filter box 31, last inert gas are discharged from diffusion mouth 3.Oxygen probe at reversal valve 30 detects
Oxygen concentration reaches job requirement in the inert gas of discharge, stops deoxygenation work, switches to gas by reversal valve 30 and be expelled to
Return air inlet 5.
After deoxygenation, the pneumatic operated valve 42 in the refined filtration air intake branch 7 of right filter cylinder 71 and refined filtration going out gas branch pipe 76 is closed,
Right filter cylinder 71 is made to be in stand-by state.The throttle valve 44 on air return pipeline 50 is adjusted simultaneously, and the speed for making gas to need enters
In SLM device.
SLM device enters working condition, is passed through dusty gas at air inlet 4, dusty gas by coarse filtration air inlet pipe 65 into
Enter cyclone dust collectors 6.Under the action of cyclone dust collectors 6, the coarse granule flue dust in dusty gas is in centrifugal force and inertia masterpiece
With lower sedimentation, flue dust is accumulate in aggregate tank 9.By the dusty gas that filters for the first time from the outlet air port 61 of cyclone dust collectors 6
After discharge, left filter cylinder 70 is entered.
Under the refined filtration effect of left filter cylinder 70, tiny particle is attracted on filter core 74 in the dusty gas after coarse filtration,
Tiny particle is built up on filter core 74, is finally dropped in aggregate tank 9.Dusty gas after coarse filtration passes through 74 mistake of filter core
After filter, clean gas is discharged from the gas outlet 721 of left filter cylinder 70.Clean gas order is by refined filtration going out gas branch pipe 76, essence
Gas supervisor 77 is filtered out, into wind turbine 43.When pressure needed for clean gas pressure to SLM device is improved by wind turbine 43, pass through
Air return pipeline 50 is drained at return air inlet 5, back in SLM device, realizes the gas circulation purification of SLM device.
Differential pressure pickup inside left filter cylinder 70 is detected when the pressure inside left filter cylinder 70 is excessive, it is necessary to by refined filtration work
It is switched to right filter cylinder 71.First turn on the pneumatic operated valve in the refined filtration air intake branch 7 of right filter cylinder 71 and refined filtration going out gas branch pipe 76
42, the pneumatic operated valve 42 of the refined filtration air intake branch 7 and refined filtration going out gas branch pipe 76 at left filter cylinder 70 is simultaneously closed off, realizes left filter cylinder
70 switchings to work with right 71 refined filtration of filter cylinder.
After dismantling the tension hasp 750 at left filter cylinder 70, rotation wing nut 743 takes out filter core 74, more finishes changing filter core
After 74, hasp 750 will be tensed again and is fastened, the left replacement of filter cylinder 70 finishes.Open end socket 72 and gas outlet 721 at left filter cylinder 70
Exhaust outlet 722b, turn off the second butterfly valve 81, the inert gas in gas tank 97 is filled with by oxygen outlet 82, the indifferent gas being filled with
Body discharges the oxygen in the left filter cylinder 70 more finished changing.When the oxygen concentration of the oxygen probe detection discharge gas in exhaust outlet 722b
When reaching job requirement, stop deoxygenation operation, it is achieved thereby that the local deoxygenation of left filter cylinder 70, due to setting for the second butterfly valve 81
It puts so that aggregate tube can be blocked when replacing filter core 74, when local deoxygenation can save the deoxygenation process of this position.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
- The equipment 1. a kind of gas circulation purification for selective laser fusing manufacture is worked continuously, including being connected to SLM device It is molded indoor air inlet（4）, return air inlet（5）And filter device between the two is connected to, the filter device includes thick Filter device and fine filtering device, and the outlet air port of rough filtering device（61）Fine filtering device is connected to by pipeline, it is characterized in that, it is described Fine filtering device includes at least two filter cylinders, the outlet air port（61）Pass through refined filtration air intake branch（7）It is respectively communicated to each filter Cylinder, the every refined filtration air intake branch（7）On be provided with connection or cut-off filter cylinder and outlet air port（61）The pneumatic operated valve of conducting （42）.
- The equipment 2. the gas circulation purification according to claim 1 for selective laser fusing manufacture is worked continuously, it is special Sign is that the rough filtering device includes cyclone dust collectors（6）, the cyclone dust collectors（6）Including with air inlet（4）Connected by pipeline Logical air inlet port（60）, with through filtering the outlet air port that connects of device（61）And dedusting cylinder（62）, the dedusting cylinder （62）Lower end set ash discharging hole（64）, the cyclone dust collectors（6）Pass through ash discharging hole（64）It is connected with aggregate tank（9）.
- The equipment 3. the gas circulation purification according to claim 2 for selective laser fusing manufacture is worked continuously, it is special Sign is：The ash discharging hole（64）With aggregate tank（9）Between be provided with gas control assembly（8）, the gas control assembly（8）Bag It includes and at least one is arranged at ash discharging hole（64）On butterfly valve and be connected to butterfly valve and aggregate tank（9）Between tube body, the collection Batch can（9）On be provided with inflating port（93）, oxygen outlet is provided on the tube body（82）.
- The equipment 4. the gas circulation purification according to claim 1 for selective laser fusing manufacture is worked continuously, it is special Sign is：The filter cylinder bottom is provided with ash discharging hole（64）, the aggregate tank connected with filter cylinder is provided on the ash discharging hole（9）, institute It states and is provided with gas control assembly between ash discharging hole and aggregate tank (9)（8）, the gas control assembly（8）Including at least one It is arranged at ash discharging hole（64）On the first butterfly valve（80）And it is connected to the first butterfly valve（80）With aggregate tank（9）Between tube body, The aggregate tank（9）On be provided with inflating port（93）, oxygen outlet is provided on the tube body（82）.
- The equipment 5. the gas circulation purification according to claim 4 for selective laser fusing manufacture is worked continuously, it is special Sign is：The tube body and aggregate tank（9）Between be additionally provided with the second butterfly valve（81）, exhaust outlet is provided at the top of the filter cylinder （722）.
- It is set 6. the gas circulation purification for selective laser fusing manufacture according to claim 1 or 4 or 5 is worked continuously It is standby, it is characterized in that：The filter cylinder from top to bottom includes end socket（72）, outer barrel（73）And cone bucket（75）, the end socket（72）With Outer barrel（73）It is fixed, the cone bucket（75）With outer barrel（73）Between by tensing hasp（750）It is detachably connected.
- The equipment 7. the gas circulation purification according to claim 1 for selective laser fusing manufacture is worked continuously, it is special Sign is：The fine filtering device and return air inlet（5）Between be responsible for by refined filtration outlet（77）Connection, the refined filtration outlet are responsible for (77) On be additionally provided with a reversal valve（30）And and reversal valve（30）Air inlet pipe is diffused in connection（32）, it is described to diffuse air inlet pipe（32） End formed diffusion mouth（3）.
- The equipment 8. the gas circulation purification according to claim 1 for selective laser fusing manufacture is worked continuously, it is special Sign is：The diffusion mouth（3）On be provided with filter box（31）, filter box（31）On be provided at least one piece of dismountable baffle （311）, the filter box（3）Inside filling filter cotton.
- The equipment 9. the gas circulation purification according to claim 1 for selective laser fusing manufacture is worked continuously, it is special Sign is：Each filter cylinder passes through refined filtration going out gas branch pipe（7）Refined filtration outlet supervisor (77) is connected to, and passes through the refined filtration outlet Supervisor（77）It is connected to wind turbine（43）, the wind turbine（43）Outlet air connector（431）Pass through air return pipeline（50）It is connected to return air Mouthful（5）, the air return pipeline（50）On be provided with throttle valve（44）.
- The equipment 10. the gas circulation purification according to claim 1 for selective laser fusing manufacture is worked continuously, it is special Sign is：The cabinet（1）Lower section sets support cabinet（1）Support construction（2）, the support construction（2）Including several adjustable Save foot cup（20）, each adjustable foot cup（20）It is correspondingly arranged a castor（21）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088913.9A CN108115130B (en) | 2016-11-30 | 2016-11-30 | Gas circulation purifying continuous operation equipment for selective laser melting manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611088913.9A CN108115130B (en) | 2016-11-30 | 2016-11-30 | Gas circulation purifying continuous operation equipment for selective laser melting manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108115130A true CN108115130A (en) | 2018-06-05 |
| CN108115130B CN108115130B (en) | 2023-08-08 |
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ID=62226609
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611088913.9A Active CN108115130B (en) | 2016-11-30 | 2016-11-30 | Gas circulation purifying continuous operation equipment for selective laser melting manufacture |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108970266A (en) * | 2018-09-21 | 2018-12-11 | 天津镭明激光科技有限公司 | A kind of dust-extraction unit and dust removal method of increasing material manufacturing laser formation equipment |
| CN109011970A (en) * | 2018-07-31 | 2018-12-18 | 西安铂力特增材技术股份有限公司 | A kind of dust-filtering purification system for SLM device |
| CN113685959A (en) * | 2021-07-20 | 2021-11-23 | 洪秀连 | Single double-filter-layer air sterilization filter |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1462995A (en) * | 1965-07-08 | 1966-06-03 | Electrochimie Soc | Improvements to gas filtration devices |
| US5064454A (en) * | 1989-01-03 | 1991-11-12 | James Pittman | Filtration removal of matter from gas streams, with off-line cleaning of filters |
| KR20000012568U (en) * | 1998-12-19 | 2000-07-05 | 김경균 | Waste gas treatment device |
| DE202009013103U1 (en) * | 2009-09-30 | 2009-12-17 | Infastaub Gmbh | Cylindrical filter cartridge for a filter device for removing fine dusts from a dust-laden gas stream and filter device and filter system with selbiger |
| CN103272444A (en) * | 2013-05-16 | 2013-09-04 | 华南理工大学 | Gas cycle purification device for sealed shaping room |
| CN103285701A (en) * | 2013-06-04 | 2013-09-11 | 江苏南方涂装环保股份有限公司 | High-efficiency and low-resistance dust remover for gas separation and purification |
| DE102012012594A1 (en) * | 2012-06-23 | 2013-12-24 | DüRR DENTAL AG | Separator for separating solid particles of liquid-solid mixture, comprises collection vessel for solid particles, which is arranged below solid outlet, and liquid outlet of cyclone is connected with inlet of fine filter |
| CN103463920A (en) * | 2013-10-10 | 2013-12-25 | 连云港市方舟实业有限公司 | Dust removal method of compound dust remover |
| CN203954986U (en) * | 2014-07-31 | 2014-11-26 | 大连海新工程技术有限公司 | A kind of efficient separating rotary Windsock type cleaner |
| CN204563793U (en) * | 2015-03-27 | 2015-08-19 | 复盛实业(上海)有限公司 | Compressor air inlet two-stage series connection filter |
| CN204637891U (en) * | 2015-05-21 | 2015-09-16 | 北京绿源艾尔环保设备有限公司 | Spin-on cartridge complex dust collector |
| CN204768047U (en) * | 2015-05-14 | 2015-11-18 | 仪征正乾机械有限公司 | Strain a dust remover |
| CN205127649U (en) * | 2015-11-20 | 2016-04-06 | 伊特克斯惰性气体系统（北京）有限公司 | Multistage dust collection device of metal 3D printer |
| CN105749689A (en) * | 2016-05-22 | 2016-07-13 | 韶关学院 | Dust filtering device used for 3D printing of selective laser melting and use method |
| CN105921747A (en) * | 2016-06-25 | 2016-09-07 | 成都雍熙聚材科技有限公司 | Gas circulating purifying device for forming atmosphere of 3D printing equipment |
| CN205659505U (en) * | 2016-06-01 | 2016-10-26 | 伊特克斯惰性气体系统（北京）有限公司 | Multistage dust collection device of metal 3D printer |
| CN206519580U (en) * | 2016-11-30 | 2017-09-26 | 北京易加三维科技有限公司 | The gas circulation for melting manufacture for selective laser purifies equipment of working continuously |
-
2016
- 2016-11-30 CN CN201611088913.9A patent/CN108115130B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1462995A (en) * | 1965-07-08 | 1966-06-03 | Electrochimie Soc | Improvements to gas filtration devices |
| US5064454A (en) * | 1989-01-03 | 1991-11-12 | James Pittman | Filtration removal of matter from gas streams, with off-line cleaning of filters |
| KR20000012568U (en) * | 1998-12-19 | 2000-07-05 | 김경균 | Waste gas treatment device |
| DE202009013103U1 (en) * | 2009-09-30 | 2009-12-17 | Infastaub Gmbh | Cylindrical filter cartridge for a filter device for removing fine dusts from a dust-laden gas stream and filter device and filter system with selbiger |
| DE102012012594A1 (en) * | 2012-06-23 | 2013-12-24 | DüRR DENTAL AG | Separator for separating solid particles of liquid-solid mixture, comprises collection vessel for solid particles, which is arranged below solid outlet, and liquid outlet of cyclone is connected with inlet of fine filter |
| CN103272444A (en) * | 2013-05-16 | 2013-09-04 | 华南理工大学 | Gas cycle purification device for sealed shaping room |
| CN103285701A (en) * | 2013-06-04 | 2013-09-11 | 江苏南方涂装环保股份有限公司 | High-efficiency and low-resistance dust remover for gas separation and purification |
| CN103463920A (en) * | 2013-10-10 | 2013-12-25 | 连云港市方舟实业有限公司 | Dust removal method of compound dust remover |
| CN203954986U (en) * | 2014-07-31 | 2014-11-26 | 大连海新工程技术有限公司 | A kind of efficient separating rotary Windsock type cleaner |
| CN204563793U (en) * | 2015-03-27 | 2015-08-19 | 复盛实业(上海)有限公司 | Compressor air inlet two-stage series connection filter |
| CN204768047U (en) * | 2015-05-14 | 2015-11-18 | 仪征正乾机械有限公司 | Strain a dust remover |
| CN204637891U (en) * | 2015-05-21 | 2015-09-16 | 北京绿源艾尔环保设备有限公司 | Spin-on cartridge complex dust collector |
| CN205127649U (en) * | 2015-11-20 | 2016-04-06 | 伊特克斯惰性气体系统（北京）有限公司 | Multistage dust collection device of metal 3D printer |
| CN105749689A (en) * | 2016-05-22 | 2016-07-13 | 韶关学院 | Dust filtering device used for 3D printing of selective laser melting and use method |
| CN205659505U (en) * | 2016-06-01 | 2016-10-26 | 伊特克斯惰性气体系统（北京）有限公司 | Multistage dust collection device of metal 3D printer |
| CN105921747A (en) * | 2016-06-25 | 2016-09-07 | 成都雍熙聚材科技有限公司 | Gas circulating purifying device for forming atmosphere of 3D printing equipment |
| CN206519580U (en) * | 2016-11-30 | 2017-09-26 | 北京易加三维科技有限公司 | The gas circulation for melting manufacture for selective laser purifies equipment of working continuously |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109011970A (en) * | 2018-07-31 | 2018-12-18 | 西安铂力特增材技术股份有限公司 | A kind of dust-filtering purification system for SLM device |
| CN108970266A (en) * | 2018-09-21 | 2018-12-11 | 天津镭明激光科技有限公司 | A kind of dust-extraction unit and dust removal method of increasing material manufacturing laser formation equipment |
| CN113685959A (en) * | 2021-07-20 | 2021-11-23 | 洪秀连 | Single double-filter-layer air sterilization filter |
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| CN108115130B (en) | 2023-08-08 |
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