CN108970266A - A kind of dust-extraction unit and dust removal method of increasing material manufacturing laser formation equipment - Google Patents
A kind of dust-extraction unit and dust removal method of increasing material manufacturing laser formation equipment Download PDFInfo
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- CN108970266A CN108970266A CN201811105983.XA CN201811105983A CN108970266A CN 108970266 A CN108970266 A CN 108970266A CN 201811105983 A CN201811105983 A CN 201811105983A CN 108970266 A CN108970266 A CN 108970266A
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- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000000605 extraction Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 19
- 239000000428 dust Substances 0.000 title abstract description 18
- 238000004140 cleaning Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 71
- 238000007664 blowing Methods 0.000 claims description 41
- 238000001914 filtration Methods 0.000 claims description 22
- 239000010813 municipal solid waste Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000003500 flue dust Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 238000012545 processing Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 239000013528 metallic particle Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
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- 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
- B01D46/0002—Casings; Housings; Frame constructions
- B01D46/0005—Mounting of filtering elements within casings, housings or frames
- B01D46/0008—Two or more filter elements not fluidly connected positioned in the same housing
-
- 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
-
- 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
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses the dust-extraction units and dust removal method of a kind of increasing material manufacturing laser formation equipment, belong to increasing material manufacturing apparatus field, including air inlet, gas outlet, blower, the first primary filter, the second primary filter, the first air inlet valve group, the first outlet valve group, the second air inlet valve group and the second outlet valve group；First primary filter is connect by the first air inlet valve group with air inlet, and the first primary filter is connect by the first outlet valve group with gas outlet；Second primary filter is connect by the second air inlet valve group with air inlet, and the second primary filter is connect by the second outlet valve group with gas outlet.The blower is located at gas outlet.Dust-extraction unit filter effect of the invention is good, and the filter device service life is long, is not required to frequently replace filter core；In non-stop-machine situation with regard to replaceable or cleaning filter core, the consequence of molded part processing failure is avoided, the level of increasing material manufacturing is improved, reduces costs, while can guarantee the safety of filter process.
Description
Technical field
The invention belongs to increasing material manufacturing apparatus field, the dedusting more particularly, to a kind of increasing material manufacturing laser formation equipment is filled
It sets and dust removal method.
Background technique
Increasing material manufacturing is commonly called as 3D printing, has merged CAD, material processing and forming technique, with mathematical model
Based on file, by software and digital control system by dedicated metal material, nonmetallic materials and biomaterial for medical purpose, according to
The modes such as extruding, sintering, melting, photocuring, injection are successively accumulated, and the manufacturing technology of physical item is produced.Relative to tradition
, it is different to the cooked mode of raw material removal-cutting, assembling, be a kind of manufacturer that " from bottom to top " passes through material addition
Method, from scratch.This makes the past by the constraint of conventionally manufactured mode, and become can for the complex structural member manufacture that cannot achieve
Energy.
It is that powder is melted or be bonded to by energy source that the increasing material manufacturing mainstream technology of industrial application, which is all using laser, at present
The technologies such as type, such as SLM, SLS, LSF.Its laser is during carrying out powder melts, if can be with the generation, not of flue dust
It can handle in time, will cause forming area smoke contamination, or even covering laser system protects mirror surface, and laser is caused not lead to effectively
Lens are crossed, lens is caused to burn；Molded surface is because be unable to get effective Laser Power Supply simultaneously, and forming parts is caused to lose
It loses.Existing treating method is generally as follows: using dust removal and filtration system as the auxiliary body of increasing material manufacturing laser formation or auxiliary
Equipment is helped, principle is to generate air quantity by big flow circulating fan to be blown into molding cavity, and generate stabilization in molded surface
Gas flow, quickly take away the flue dust in forming process, while using fan inlet end filter device by the flue dust in gas
It filters out, and the gas after cleaning is blown into molding cavity again, form the stable dust removal by filtration circulatory system.
But often there was only one of filter device in existing dust removal and filtration system, filter effect is not good enough；And filtered
Cheng Zhong, metal powder granulates can be filtered with flue dust, this will cause the filter device service life and sharply declines, and be needed to frequently replace
Filter core；But need to shut down replacement filter core once the filter core blocking in forming process, so that ultimately causing molded part processing
The consequence of failure, technical problem low, at high cost that there are equipment work efficiencies.The active metals powder such as titanium, aluminium generates simultaneously
The metal condensate of bulky grain has the danger being readily burned, therefore the monitoring of oxygen content becomes necessary in filter device.Therefore
How to improve filter effect, realize without shutting down just replaceable or cleaning filter core and the safety for guaranteeing filter process, becomes and mention
Rise the key of moulding level.
Summary of the invention
In view of the problems of the existing technology, that the present invention provides a kind of filter effects is good, safety is easy to operate, without shutting down
With regard to the dust-extraction unit and dust removal method of replaceable or cleaning filter core increasing material manufacturing laser formation equipment.
The present invention is implemented as follows:
A kind of dust-extraction unit of increasing material manufacturing laser formation equipment, including air inlet, gas outlet, blower, the first primary mistake
Filter device, the second primary filter, the first air inlet valve group, the first outlet valve group, the second air inlet valve group and the second outlet valve group；
First primary filter is connect by the first air inlet valve group with air inlet, and the first primary filter passes through first
Outlet valve group is connect with gas outlet；
Second primary filter is connect by the second air inlet valve group with air inlet, and the second primary filter passes through second
Outlet valve group is connect with gas outlet；
The blower is located at gas outlet.
Due to setting there are two primary filter, at the beginning of being switched to second when the first primary filter filter capacity reduces
Grade filter device can select the first primary filter of cleaning or replacement according to the filter capacity of the first primary filter at this time
Interior filter core.
Further, the dust-extraction unit further includes being equipped with secondary filter assembly, and the first primary filter passes through first
Outlet valve group is connect with secondary filter assembly, and the second primary filter is connected by the second outlet valve group and secondary filter assembly
It connects, secondary filter assembly is connect with gas outlet.Gas passes through secondary filter assembly after primary filter filters again in this way
Secondary filter is carried out, it can be with lift gas cleanliness.
Further, secondary filter assembly includes rectangular filter core case and the rectangular filter core that is arranged in rectangular filter core case.Institute
Rectangular filter core bottom portion is stated equipped with sliding rail, rectangular filter core can slide into rectangular filter core case along sliding rail.Such structure setting can make
Rectangular filter core is compressed on the slide rail by camshaft fast compressing device.
Further, back-blowing device is equipped in first primary filter and the second primary filter；It is described
It is connected between back-blowing device and first filter cylinder/second filter cylinder by blowback port；First filter cylinder/the second filter cylinder bottom connection
There are the first trash receptacle/bis- trash receptacles.
Back-blowing device is reversely blown by the filter core into the first primary filter and the second primary filter, will be filtered
Dust on core is blown off, prolonging service life of filter elements.
Further, back-blowing device includes gas cylinder, intake valve, pressure controller and the rapid exhaust connecting with gas cylinder；
The rapid exhaust is located at the port of the gas cylinder, and the intake valve is set on rapid exhaust, the intake valve
One end is equipped with back-blowing device air inlet, the other end is equipped with back-blowing device gas outlet.
Further, dust-extraction unit of the invention further includes handover control system；The handover control system includes: for examining
Survey differential pressure controller, control the first intake valve, the first air outlet valve, the second intake valve, second of air inlet and air outlet draught head
The executive device of outlet threshold switch and the first alarm lamp；The I/O terminal of the differential pressure controller is alarmed with executive device, first respectively
The trigger terminal of lamp is electrically connected；The I/O terminal of the executive device respectively with the first intake valve of valve group, the first air outlet valve, second
The trigger terminal electrical connection of intake valve, the second air outlet valve, back-blowing device.
Differential pressure controller sends alarm signal to the first alarm lamp, and differential pressure controller sends switching signal to executive device.
The pressure difference at air inlet and air outlet can be monitored in real time in differential pressure controller, when air inlet and air outlet pressure difference be more than setting value,
Differential pressure controller sends alarm signal and informs that operator's tubular strainer currently in use is blocked seriously by dust or metallic particles,
It needs to be switched to another filter cylinder and carries out blowback cleaning or replacement to serious tubular strainer is blocked.Simultaneously because being equipped with control
The executive device of valve open/close, differential pressure controller can send control signal to executive device, and executive device sends to valve and switchs
Signal control valve door switch is to achieve the purpose that automatically switch primary filter.
Further, the lambda sensor of detection oxygen content, oxygen sensing are respectively equipped in the first filter cylinder and in the second filter cylinder
The I/O terminal of device is electrically connected with the trigger terminal of the second alarm lamp.Lambda sensor is for detecting in the first filter cylinder and the second filter cylinder
Oxygen content, and will test signal and be sent to the second alarm lamp.Oxygen content in filter cylinder can be monitored in real time in this way, it is ensured that in filter cylinder
Oxygen content is in safe range.
Further, the first air inlet valve group, the first outlet valve group, the second air inlet valve group, the second air outlet valve group difference
Including a Pneumatic butterfly valve and a Hand-operated butterfly valve.The setting of Pneumatic butterfly valve and Hand-operated butterfly valve makes operator may be selected to pass through hand
Dynamic or system carries out the switching of the first primary filter and the second primary filter automatically.
Further, it is additionally provided with outer case, is equipped with the safety equipped with electronic lock in the front and back of the outer case
Door, the outside of safety door are equipped with control flow, and control flow can show state of filter element, and can manipulate the first primary filter by control flow
The working condition of device and the second primary filter is completed the blowback to filter core and is operated.
Further, the method being dusted using above-mentioned dust-extraction unit, comprising the following steps:
Before S1, filtering start, it is in the Hand-operated butterfly valve of the first air inlet valve group and the first outlet valve group and Pneumatic butterfly valve and opens
Open state；The Hand-operated butterfly valve of second air inlet valve group and the second outlet valve group is in the open state, and Pneumatic butterfly valve is in close state；
When S2, filtering start, the gas with flue dust and metal powder enters the first primary filter by air inlet
Primary filter is carried out, it is for re-filtering to enter secondary filter assembly by the filtered gas of the first primary filter, warp
The filtered gas of secondary filter assembly is crossed to be admitted to by blower in the molding cavity of increasing material manufacturing equipment；
S3, when the first primary filter after a period of work, air inlet and air outlet pressure difference becomes larger；When pressure difference controls
Device monitors to determine that this filter core needs to clean or replace, differential pressure controller when pressure difference is more than predetermined value at air inlet and air outlet
Warning message number is sent to the first alarm lamp, makes the flashing of the first alarm lamp to notify operator；
S4, operator input switching control instruction by control flow, and executive device is closed after receiving switching control instruction
The Pneumatic butterfly valve in the first air inlet valve group and the first outlet valve group is closed, and opens the gas of the second air inlet valve group and the second outlet valve group
Dynamic butterfly valve, switching use the second primary filter；
S5, operator input cleaning control instruction by control flow, and back-blowing device receives first to beat when cleaning control instruction
Drive air valve into, pressure controller by after the pressure control to 4.5bar in gas cylinder, close by intake valve, and the gas in gas cylinder will be through
It crosses rapid exhaust and quickly enters the first filter cylinder, and then sprayed along blowback port, complete blowback process；From filter after blowback
The sundries that core is fallen is fallen into the first trash receptacle below the first filter cylinder；
S6, similarly, the second primary filter carry out primary filter to the gas entered by air inlet 15；
S7, illustrate that the filter core in the second filter cylinder needs to clear up or replace when the flashing of the second alarm lamp；Operator passes through
Control flow input switching control instruction, executive device receive switching control instruction after by the second primary filter switch to through
Cross the first primary filter of replacement or cleaning；
S8, operator carry out blowback operation to the second filter cylinder inner filter core；The sundries fallen after blowback from filter core is fallen
Enter in the second trash receptacle below the second filter cylinder；
S9, when differential pressure controller monitor air inlet and air outlet pressure difference be more than setting value after a certain period of time prosthetic operate
Switching, then differential pressure controller sends switching signal to executive device, and executive device is to the first intake valve, the first air outlet valve, second
Intake valve, the second air outlet valve send the work shape of switching signal switching the first primary filter and the second primary filter
State is performed simultaneously device to back-blowing device transmission blowback and washes signal, and back-blowing device fills the primary filter in off working state
The filter core set carries out blowback cleaning.
In conclusion dust-extraction unit and dust removal method of the invention, dust-extraction unit compared to the prior art not only filter
Effect is good, and the filter device service life extends, it is no longer necessary to frequently replace filter core；In addition operator can manually or automatically cut
The working condition for changing the first primary filter and the second primary filter is filtered in non-stop-machine situation with regard to replaceable or cleaning
Core avoids the consequence of molded part processing failure, improves the level of increasing material manufacturing, reduces costs, while can guarantee
Filter the safety of journey.
Detailed description of the invention
Fig. 1 is the positive structure schematic of preferred embodiment of the present invention dust removal and filtration system；
Fig. 2 is the structure schematic diagram of preferred embodiment of the present invention dust removal and filtration system；
Fig. 3 is the first filter cylinder/second filter cylinder partial structure diagram of preferred embodiment of the present invention dust removal and filtration system；
Fig. 4 is the secondary filter components of system as directed structural schematic diagram of preferred embodiment of the present invention dust removal and filtration system.
Fig. 5 is the back-blowing device structural schematic diagram of preferred embodiment of the present invention dust removal and filtration system.
In figure:
1, the first alarm lamp；2, blower；
3, secondary filter assembly；31, rectangular filter core case；32, sliding rail；33, cam；34, rectangular filter core；35, shaft；36,
Handle；
4, the first outlet valve group；
5, back-blowing device；51, gas cylinder；52, intake valve；53, pressure controller；54, rapid escape valve；55, back-blowing device
Air inlet；56, back-blowing device gas outlet；
6, the first filter cylinder；7, the first air inlet valve group；8, the first trash receptacle；9, safety door；10, the second alarm lamp；11, outlet
Mouthful；12, executive device；13, the second outlet valve group；14, the second filter cylinder；15, air inlet；16, the second air inlet valve group；17, second
Trash receptacle；18, lambda sensor；19, filter core；20, blowback port；21, outer case.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The fixed present invention.
Increasing material manufacturing laser formation equipment belongs to a kind of high-end material molding equipment, and people bring in enjoyment increasing material manufacturing
Convenience when, dust-extraction unit but exists such as poor filtration effect, the filter device service life is low, replacement filter core needs to shut down, there are inflammable wind
The various problems such as danger.
In view of the above-mentioned problems, as shown in Figures 1 to 4, the present invention provides a kind of removing for increasing material manufacturing laser formation equipment
Dirt device, including air inlet 15, gas outlet 11, blower 2, the first primary filter, the second primary filter, the first air inlet
Valve group 7, the first outlet valve group 4, the second air inlet valve group 16 and the second outlet valve group 13；
First primary filter is connect by the first air inlet valve group 7 with air inlet 15, and the first primary filter passes through
First outlet valve group 4 is connect with gas outlet 11；
Second primary filter is connect by the second air inlet valve group 16 with air inlet 15, and the second primary filter passes through
Second outlet valve group 13 is connect with gas outlet 11；
The blower 2 is located at gas outlet 11.
Preferably, as shown in figure 3, first primary filter includes the first filter cylinder 6, filter is equipped in the first filter cylinder 6
Core 19；Equally, the second primary filter includes the second filter cylinder 14, also is provided with filter core 19 in the second filter cylinder 14.
Preferably, the first air inlet valve group 7, the first outlet valve group 4, the second air inlet valve group 16 and the second outlet valve group 13
It include a Pneumatic butterfly valve and a Hand-operated butterfly valve.
In order to further increase the effect of dust-extraction unit filtering, further, the dust-extraction unit further includes secondary filter
Device, the first primary filter are connect by the first outlet valve group 4 with secondary filter assembly 3, and the second primary filter is logical
It crosses the second outlet valve group 13 to connect with secondary filter assembly 3, secondary filter assembly 3 is connect with gas outlet 11.
For prolonging service life of filter elements, it is preferred that be all provided in the first primary filter and the second primary filter
Have back-blowing device 5, be illustrated by taking the first primary filter as an example below: the back-blowing device 5 is connect with the first filter cylinder 6,
And the filter core 19 into the first filter cylinder 6 is blown, 6 bottom of the first filter cylinder is connected with the first trash receptacle 8, for collecting the first filter cylinder 6
Interior waste material；It is the intake valve 52 connect with gas cylinder, pressure controller 53, quick as shown in figure 4, back-blowing device 5 includes gas cylinder 51
Exhaust apparatus 54；The rapid exhaust 54 is located at the port of the gas cylinder 51, and the intake valve 52 is filled set on Quick air-discharge
It sets on 54, one end of the intake valve 52 is equipped with back-blowing device air inlet 55, the other end is equipped with back-blowing device gas outlet 56；
It is connected between the back-blowing device 5 and first filter cylinder 6 by blowback port 20；Specifically, the blowback air
One end of mouth 20 is connect with the back-blowing device gas outlet 56, and the other end/inside of blowback port 20 is protruded into the first filter cylinder 6
Portion.
When the back-blowing device 5 on the first primary filter works, gas cylinder 51 on back-blowing device 5 passes through at the beginning of first
Filter core in grade filter device is reversely blown, and the dust on filter core 19 is blown off；After blowback, since pressure controller 53 is supervised
Air pressure is too low in survey gas cylinder 51, begins through back-blowing device air inlet 55 and is filled with enough gas into gas cylinder 51, so as to next anti-
Blow use.
The connection relationship of second primary filter and back-blowing device 5 is same as above, and details are not described herein again.Second filter cylinder, 14 bottom
It is connected with the second trash receptacle 17, for collecting the waste material in the second filter cylinder 14.
Dust-extraction unit of the invention further includes handover control system；The handover control system includes: for detecting air inlet
The differential pressure controller of mouth and gas outlet draught head, (the first intake valve, the first air outlet valve, the second intake valve, second go out control valve group
Air valve) switch executive device 12 and prompt the first alarm lamp 1；The I/O terminal of the differential pressure controller respectively with execute dress
Set the trigger terminal electrical connection of the 12, first alarm lamp 1；The I/O terminal of the executive device 12 respectively with valve group (the first air inlet
Valve, the first air outlet valve, the second intake valve, the second air outlet valve), the electrical connection of the trigger terminal of back-blowing device 5.
One pressure elements of differential pressure controller is located at air inlet 15, and then detects to intake pressure；Pressure difference control
Another pressure elements of device processed is located at gas outlet 11, and then detects to outlet air pressure, it can real-time monitoring air inlet
The draught head of mouth 15 and gas outlet 11；When air inlet and air outlet pressure difference is more than setting value, such as 2000Pa (filter core, pipeline knot
The difference such as structure value is different, is subject to actual measurement) when illustrate that the pressure difference of gas outlet is too low, differential pressure controller is to first at this time
Alarm lamp 1 sends alarm signal, and it is serious to inform that operator's tubular strainer currently in use is blocked by dust or metallic particles, needs
It is switched to another filter cylinder and carries out blowback cleaning or replacement to serious tubular strainer is blocked.Operator at this time should be to holding
Luggage sets the control instruction for issuing switching primary filter；After the first alarm lamp 1 issues alarm signal a few minutes, such as operate
Personnel do not reply, then differential pressure controller sends switching signal to executive device 12, and executive device 12 is to the first intake valve, first
Air outlet valve, the second intake valve, the second air outlet valve send switching signal and switch the first primary filter and the second primary filter dress
The working condition set is performed simultaneously device 12 to the transmission blowback of back-blowing device 5 and washes signal, and back-blowing device 5 is in inoperative shape
The filter core 19 of the primary filter of state carries out blowback cleaning.
Preferably, the lambda sensor 18 of detection oxygen content is respectively provided in the first filter cylinder 6 and in the second filter cylinder 14,
Lambda sensor 18 is respectively provided in the first filter cylinder 6 and the second filter cylinder 14, oxygen content in real-time monitoring filter cylinder, when oxygen content is higher than peace
When total head, lambda sensor 18 will test signal and be sent to the second alarm lamp 10, so as to ensure that oxygen content is in safety in filter cylinder
In range (such as no more than 4%, according to filtering material difference, the value is different).
Preferably, as shown in figure 5, secondary filter assembly 3 includes rectangular filter core case 31 and is arranged in rectangular filter core case 31
Rectangular filter core 34.Rectangular 31 bottom of filter core case is equipped with sliding rail 32, and rectangular filter core 34 can slide into rectangular filter core along sliding rail 32
In case 31.
Rectangular 31 top plate of filter core case is set there are two the pushing cam set being parallel to each other, and pushing cam set includes two cams 33
The shaft 35 being fixedly connected with two cams 33, shaft 35 are connect with rectangular 31 top panel turns of filter core case, and shaft is to rectangular filter
Extend outside core case 31 and forms handle 36.
When rectangular filter core 34 is installed, rectangular filter core 34 is smoothly entered into operating position along filter core sliding rail 32, passes through handle
Rectangular 34 top of filter core is tightly pushed down in 36 two pushing cam sets of rotation, rectangular 34 direction of filter core under the long end of cam 33 is turned to
Four angles, so that the sealing surface of rectangular filter core 34 be made tightly to be fitted in 32 surface of filter core sliding rail, realization is fast, easily sealed.
It is additionally provided with outer case 21, the air inlet 15 and gas outlet 11 are located at the same vertical wall of the outer case 21
On；The blower 2 is located on the roof of outer case 21；Air inlet 15 and gas outlet 11 are the through-hole being opened in vertical wall；?
The pipeline being in communication with the outside is equipped in two through-holes.
It is equipped with the safety door 9 equipped with electronic lock in the front and back of the outer case 21, the outside of safety door 9 is set
There is control flow, control flow can show 19 state of filter core, and the first primary filter and the second primary can be manipulated by control flow
The working condition of filter device is completed the blowback to filter core 19 and is operated.Electronic lock is in close state when system works, and is prevented
Only operator leads to dangerous generation to system misoperation in cabinet.
The method being dusted using above-mentioned dust-extraction unit, comprising the following steps:
Before S1, filtering start, makes the first primary filter, the first air inlet valve group 7 and the work of the first outlet valve group 4, make
Second primary filter, the second air inlet valve group 16 and the second outlet valve group 13 are in spare；Specifically: make the first air inlet valve group
7 and first outlet valve group 4 Hand-operated butterfly valve and Pneumatic butterfly valve it is in the open state；Second air inlet valve group 16 and the second outlet valve group
Hand-operated butterfly valve it is in the open state, Pneumatic butterfly valve is in close state；
When S2, filtering start, the gas with flue dust and metal powder enters the first primary filter by air inlet 15 and fills
Carry out primary filter is set, it is for re-filtering to enter secondary filter assembly 3 by the filtered gas of the first primary filter,
It is admitted in the molding cavity of increasing material manufacturing equipment by the filtered gas of secondary filter assembly 3 by blower 2；
S3, when the first primary filter after a period of work, in the first filter cylinder 6 19 surface impurity of filter core accumulation compared with
More, flue dust, metal powder block filter core 19, and 11 air quantity of gas outlet reduces at this time, and air inlet 15 and 11 pressure difference of gas outlet is caused to become
Greatly, determine that this filter core 19 needs clearly when pressure difference is more than predetermined value at differential pressure controller monitors air inlet 15 and gas outlet 11
It washes or replaces, differential pressure controller sends warning message number to the first alarm lamp 1, makes the flashing of the first alarm lamp 1 to notify operator
Member；
S4, operator can input switching control instruction by control flow, and executive device 12 receives switching control instruction
The Pneumatic butterfly valve in the first air inlet valve group 7 and the first outlet valve group 4 is closed afterwards, and opens the second air inlet valve group 16 and the second outlet
The Pneumatic butterfly valve of valve group 13, switching use the second primary filter；People is needed when needing replacing the filter core 19 in the first filter cylinder 6
The Hand-operated butterfly valve that work is closed in the first air inlet valve group 7 and the first outlet valve group 4 ensures safe operating environment；
S5, operator input cleaning control instruction by control flow, and back-blowing device 5 receives first to beat when cleaning control instruction
It drives air valve into, by pressure controller by after the pressure control to 4.5bar in gas cylinder, closes intake valve, the gas in gas cylinder is just
The first filter cylinder 6 can be quickly entered by rapid exhaust, and then is sprayed along blowback port 20, and blowback process is completed.By anti-
After blowing from the first trash receptacle 8 that the sundries that filter core 19 is fallen falls into 6 lower section of the first filter cylinder；
S6, similarly, the second primary filter carries out primary filter to the gas entered by air inlet 15, by second
It is for re-filtering that the filtered gas of primary filter enters secondary filter assembly 3, after the filtering of secondary filter assembly 3
Gas be admitted in the molding cavity of increasing material manufacturing equipment by blower 2；
S7, illustrate that the filter core 19 in the second filter cylinder 14 needs to clear up or replace when the flashing of the second alarm lamp 10, from second
Operator can input switching control instruction by control flow when primary filter is switched to the first primary filter, execute
Device 12 closes the Pneumatic butterfly valve in the second air inlet valve group 16 and the second outlet valve group 13 after receiving switching control instruction, and opens
The Pneumatic butterfly valve of the first air inlet valve group 7 and the first outlet valve group 4 is opened, switching uses the first primary filter by replacement or cleaning
Device.Artificial close in the second air inlet valve group 16 and the second outlet valve group 13 is needed when replacing the filter core 19 in the second filter cylinder 14
Hand-operated butterfly valve ensures safe operating environment；
It is S8, identical as the blowback operation to 6 inner filter core 19 of the first filter cylinder to the blowback of 14 inner filter core 19 of the second filter cylinder operation
This will not be repeated here.After blowback from the second trash receptacle 17 that the sundries that filter core 19 is fallen falls into 14 lower section of the second filter cylinder；
S9, when differential pressure controller monitor air inlet and air outlet pressure difference be more than setting value after a certain period of time prosthetic operate
Switching, then differential pressure controller sends switching signal to executive device, and executive device is to the first intake valve, the first air outlet valve, second
Intake valve, the second air outlet valve send the work shape of switching signal switching the first primary filter and the second primary filter
State is performed simultaneously device to back-blowing device transmission blowback and washes signal, and back-blowing device fills the primary filter in off working state
The filter core set carries out blowback cleaning.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of dust-extraction unit of increasing material manufacturing laser formation equipment, it is characterised in that: including air inlet, gas outlet, blower,
One primary filter, the second primary filter, the first air inlet valve group, the first outlet valve group, the second air inlet valve group and second
Outlet valve group；
First primary filter is connect by the first air inlet valve group with air inlet, and the first primary filter passes through the first outlet
Valve group is connect with gas outlet；
Second primary filter is connect by the second air inlet valve group with air inlet, and the second primary filter passes through the second outlet
Valve group is connect with gas outlet；
The blower is located at gas outlet.
2. the dust-extraction unit of increasing material manufacturing laser formation equipment as described in claim 1, it is characterised in that: the dust-extraction unit
It further include being equipped with secondary filter assembly, first primary filter is connected by the first outlet valve group and secondary filter assembly
It connects, second primary filter is connect by the second outlet valve group with secondary filter assembly；Secondary filter assembly and outlet
Mouth connection.
3. the dust-extraction unit of increasing material manufacturing laser formation equipment as claimed in claim 2, it is characterised in that: secondary filter assembly
Including rectangular filter core case and the rectangular filter core being arranged in rectangular filter core case；The rectangular filter core bottom portion is equipped with sliding rail, rectangular
Filter core can slide into rectangular filter core case along sliding rail.
4. the dust-extraction unit of increasing material manufacturing laser formation equipment as described in claim 1, it is characterised in that: described first is primary
Back-blowing device is equipped in filter device and the second primary filter；The back-blowing device and first filter cylinder/second filter
It is connected between cylinder by blowback port；First filter cylinder/second filter cylinder bottom is connected with the first trash receptacle/bis- trash receptacles.
5. the dust-extraction unit of increasing material manufacturing laser formation equipment as claimed in claim 4, it is characterised in that: back-blowing device includes
Gas cylinder, the intake valve being connect with gas cylinder, pressure controller and rapid exhaust；The rapid exhaust is located at the gas cylinder
Port, the intake valve is set on rapid exhaust, and one end of the intake valve is equipped with back-blowing device air inlet, the other end
Equipped with back-blowing device gas outlet.
6. the dust-extraction unit of increasing material manufacturing laser formation equipment as described in claim 1, it is characterised in that: further include switching control
System processed；The handover control system include for detecting the differential pressure controller of air inlet and air outlet pressure difference, control valve group is opened
The executive device of pass and the first alarm lamp；The triggering with executive device, the first alarm lamp respectively of the I/O terminal of the differential pressure controller
Terminal electrical connection；The I/O terminal of the executive device is electrically connected with valve group, the trigger terminal of back-blowing device respectively.
7. the dust-extraction unit of increasing material manufacturing laser formation equipment as described in claim 1, it is characterised in that: in the first filter cylinder and
The lambda sensor of detection oxygen content, the triggering of the I/O terminal and the second alarm lamp of lambda sensor are respectively equipped in second filter cylinder
Terminal electrical connection.
8. the dust-extraction unit of increasing material manufacturing laser formation equipment as described in claim 1, it is characterised in that: first air inlet
Valve group, the first outlet valve group, the second air inlet valve group, the second air outlet valve group respectively include a Pneumatic butterfly valve and a hand adjustment
Valve.
9. the dust-extraction unit of increasing material manufacturing laser formation equipment as described in claim 1, it is characterised in that: be additionally provided with outer container
Body；It is equipped with the safety door equipped with electronic lock in the front and back of the outer case, the outside of safety door is equipped with control flow.
10. the side that the dust-extraction unit of increasing material manufacturing laser formation equipment according to any one of claims 1 to 9 is dusted
Method, it is characterised in that: including following work step:
Before S1, filtering start, the Hand-operated butterfly valve of the first air inlet valve group and the first outlet valve group and Pneumatic butterfly valve is made to be in opening state
State；The Hand-operated butterfly valve of second air inlet valve group and the second outlet valve group is in the open state, and Pneumatic butterfly valve is in close state；
When S2, filtering start, the gas with flue dust and metal powder is carried out by air inlet into the first primary filter
Primary filter it is for re-filtering to enter secondary filter assembly by the filtered gas of the first primary filter, by secondary
The grade filtered gas of filter device is admitted in the molding cavity of increasing material manufacturing equipment by blower；
S3, when the first primary filter after a period of work, air inlet and air outlet pressure difference becomes larger；When differential pressure controller is supervised
It measures and determines that this filter core needs to clean or replace when pressure difference is more than predetermined value at air inlet and air outlet, differential pressure controller is sent
Warning message number gives the first alarm lamp, makes the flashing of the first alarm lamp to notify operator；
S4, operator input switching control instruction by control flow, and executive device closes the after receiving switching control instruction
The pneumatic butterfly of one air inlet valve group and Pneumatic butterfly valve and unlatching the second air inlet valve group and the second outlet valve group in the first outlet valve group
Valve；
S5, operator by control flow input cleaning control instruction, back-blowing device receive cleaning control instruction when first open into
Air valve, pressure controller is by after the pressure control to 4.5bar in gas cylinder, and intake valve is closed, and the gas in gas cylinder is run past fastly
Fast exhaust apparatus quickly enters the first filter cylinder, and then sprays along blowback port, completes blowback process；Fall after blowback from filter core
The sundries fallen is fallen into the first trash receptacle below the first filter cylinder；
S6, the second primary filter carry out primary filter to the gas entered by air inlet；
S7, illustrate that the filter core in the second filter cylinder needs to clear up or replace when the flashing of the second alarm lamp；Operator passes through control
Screen input switching control instruction, executive device switch to the second primary filter by more after receiving switching control instruction
The first primary filter for changing or clearing up；
S8, operator carry out blowback operation to the second filter cylinder inner filter core；The sundries fallen after blowback from filter core falls into
In the second trash receptacle below two filter cylinders；
S9, when differential pressure controller monitor air inlet and air outlet pressure difference be more than setting value after a certain period of time prosthetic operation cut
Change, then differential pressure controller to executive device send switching signal, executive device to the first intake valve, the first air outlet valve, second into
Air valve, the second air outlet valve send the working condition of switching signal switching the first primary filter and the second primary filter,
It is performed simultaneously device and washes signal to back-blowing device transmission blowback, back-blowing device is to the primary filter in off working state
Filter core carries out blowback cleaning.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811105983.XA CN108970266A (en) | 2018-09-21 | 2018-09-21 | A kind of dust-extraction unit and dust removal method of increasing material manufacturing laser formation equipment |
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| CN201811105983.XA CN108970266A (en) | 2018-09-21 | 2018-09-21 | A kind of dust-extraction unit and dust removal method of increasing material manufacturing laser formation equipment |
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