CN113750670A - A purifier for 3D prints - Google Patents
A purifier for 3D prints Download PDFInfo
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- CN113750670A CN113750670A CN202111136660.9A CN202111136660A CN113750670A CN 113750670 A CN113750670 A CN 113750670A CN 202111136660 A CN202111136660 A CN 202111136660A CN 113750670 A CN113750670 A CN 113750670A
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- box body
- communicated
- hole
- filter element
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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
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0091—Including arrangements for environmental or personal protection
- B01D46/0093—Including arrangements for environmental or personal protection against fire or explosion
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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
- 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
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Materials Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention relates to a purification device for 3D printing, comprising: a box body; the partition board is fixed in the box body and divides the box body into an upper clean cavity and a lower precipitation cavity; the partition board is also provided with a through hole which is communicated up and down; the cyclone precipitation box is arranged outside the box body, an inlet of the cyclone precipitation box is communicated with an exhaust port of the printing device D, and an outlet of the cyclone precipitation box is communicated with the precipitation cavity through a first pipeline; the filter element is arranged in the lower sedimentation cavity and fixed on the lower surface of the partition plate; and the exhaust pipe is fixed on the outer wall of the box body and communicated with the upper clean cavity. This purifier can avoid the deflagration risk of active metal, improves the life of filter core.
Description
Technical Field
The invention relates to the technical field of 3D printing systems, in particular to a purifying device for 3D printing.
Background
In the sintering process of metal 3D printing, high temperature impact powder bed can produce sintering black smoke and arouse the raise dust, and black smoke and raise dust are one of the core key elements that influence printing quality. The filter core purification treatment is the main mode of peeling off the impurity air current, and the filter core lasts life-span consumption in the course of working, because the flammable and explosive characteristics of active metal, untimely change filter core, the active metal who adheres to on the filter core also has the detonation risk.
Disclosure of Invention
The invention aims to provide a purification device for D printing, which can avoid the deflagration risk of active metals and prolong the service life of a filter element.
In order to achieve the above object, the present invention provides a purge device for D-printing, the purge device including:
a box body;
the partition board is fixed in the box body and divides the box body into an upper clean cavity and a lower precipitation cavity; the lower surface of the partition board is provided with an annular groove with a downward notch, the partition board is also provided with a vent hole communicated with the annular groove, and the partition board is also provided with a through hole which is communicated up and down;
the cyclone precipitation box is arranged outside the box body, an inlet of the cyclone precipitation box is communicated with an exhaust port of the printing device D, and an outlet of the cyclone precipitation box is communicated with the precipitation cavity through a first pipeline;
the filter element is arranged in the lower precipitation cavity and is in a cylindrical shape, and a sealing gasket is fixed on the upper surface of the filter element; the sealing gasket completely covers the notch of the annular groove;
the negative pressure fan is arranged on the outer wall of the box body, and an air suction port of the negative pressure fan is communicated with the air vent through a second pipeline;
the upper cleaning cavity is communicated with the interior of the filter element through the connecting through hole;
and the exhaust pipe is fixed on the outer wall of the box body and communicated with the upper clean cavity.
Further, still be equipped with atomizing system on the box, atomizing system includes:
the water accumulation kettle is arranged outside the box body;
the water outlet pipeline is fixed on the water accumulation kettle, and a water inlet of the water outlet pipeline is communicated with the interior of the water accumulation kettle;
the water supply pipe is fixed on the box body, and a water outlet of the water outlet pipeline is communicated with the water supply pipe;
the electromagnetic valve is arranged on the water outlet pipeline;
the atomizing nozzles are symmetrically arranged around the filter element, and water inlets of the atomizing nozzles are communicated with a water supply pipeline;
the gas inlet pipeline is fixed on the water accumulation kettle, a gas outlet of the gas inlet pipeline is communicated with the inside of the water accumulation kettle, and a gas inlet of the gas inlet pipeline is communicated with the pressurizing equipment.
Further, still be equipped with the pulse system on the box, the pulse system includes:
the mounting seat is fixed on the outer wall of the box body;
the air collecting bag is arranged on the mounting seat;
the one-way valve is arranged at the air inlet of the air collecting bag;
one end of the output pipeline is communicated with the air outlet of the air collecting bag;
the pulse valve is arranged on the output pipeline;
the bell mouth is fixed at the other end of the output pipeline, the bell mouth is positioned in the filter element, and the opening of the bell mouth is downward;
the box body is also provided with a pressing mechanism, and the pressing mechanism can seal the connecting through hole.
Further, the horn mouth is the ring form, the horn mouth coincides with the axis that allies oneself with the through-hole, the horn mouth with the axis coincidence of filter core.
Furthermore, a top plate of the box body is provided with a mounting hole, and the mounting hole is superposed with the central axis of the through hole; the hold-down mechanism includes:
the telescopic rod of the air cylinder can extend into the upper clean cavity;
the end sealing plug is fixed on the end face of the free end of the telescopic rod, and a pressure release valve is arranged on the end sealing plug;
when the telescopic rod moves downwards and the end sealing plug contacts the upper surface of the partition plate, the end sealing plug completely covers the communicating hole, and the communicating hole is sealed.
Still further, the pressing mechanism also comprises a tubular step flange, and the outer wall of the upper end of the step flange is provided with an annular gap; the upper end face of the step flange penetrates through the mounting hole to be hermetically fixed with the bottom face of the cylinder, the top plate of the box body is clamped between the annular notch and the cylinder, and a rubber pad is arranged between the annular notch and the top plate of the box body; a first annular step and a second annular step are arranged in the step flange from bottom to top, a first accommodating hole is formed between the lower end face of the step flange and the first annular step, and the first annular step and the second annular step are second accommodating holes; the diameter of the inner ring of the first annular step is smaller than that of the end sealing plug, and the diameter of the outer ring of the first annular step is not smaller than that of the end sealing plug;
when the telescopic rod moves upwards, the end sealing plug enters the first accommodating hole, and the upper end surface of the end sealing plug is tightly attached to the first annular step.
Further, when the communication hole is sealed, the pulse valve is activated.
Furthermore, the bottom of the lower sedimentation cavity is also provided with a material collecting box.
Furthermore, an openable sealing door is further arranged on the box body.
The invention has the positive effects that: according to the purification device, black smoke and raised dust formed by 3D printing are introduced into the cyclone precipitation box, large-particle impurities are stripped by cyclone dust removal, and the surface of a particle deposition filter element is avoided; the bell mouth releases pulse type impact airflow to spray the inner wall of the filter element, so as to remove dust impurities on the surface of the filter element, and the deposited dust is reversely stripped by utilizing the instantaneous release pressure of the gas, so that the service life of the filter element is greatly prolonged; meanwhile, the device adopts an atomization system to humidify the surface of the filter element, and the deflagration risk of active metals is avoided, so that the safe and reliable long-life application of the filter element is ensured.
Drawings
FIG. 1 is a schematic overall structure diagram of a purification apparatus for 3D printing according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a purification apparatus for 3D printing according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view taken along the line A-A in FIG. 2;
FIG. 4 is a schematic view of an installation structure of the pressing mechanism according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of the pulse system according to the embodiment of the present invention;
fig. 6 is an enlarged schematic structural view of the pressing mechanism according to the embodiment of the present invention.
In the figure: 1. the device comprises a box body, 101, an upper cleaning cavity, 102, a partition plate, 103, a lower precipitation cavity, 104, a filter element, 105, an annular groove, 106, vent holes, 107, a communicating hole, 108, a sealing gasket, 109 and a mounting hole; 2. a pulse system 201, a mounting seat 202, a gas collection bag 203, a one-way valve 204, a pulse valve 205, an output pipeline 206 and a bell mouth; 3. the pressing mechanism comprises a pressing mechanism body 301, an air cylinder 302, a step flange 3021, a first annular step 3022, a second annular step 3023, an annular notch 303, a telescopic rod 304, an end sealing plug 305 and a pressure release valve; 4. a negative pressure fan 401 and a second pipeline; 5. an exhaust pipe; 6. a cyclone settling box 601, a first pipeline; 7. an atomization system 701, a water accumulation kettle 702, a water outlet pipeline 703, a water supply pipe 704 and an electromagnetic valve; 705. an atomizing nozzle 706 and an air inlet pipeline; 8. and (4) sealing the door.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 5, the present embodiment provides a purge apparatus for 3D printing, comprising a case 1; a partition plate 102 is fixed in the box body 1, and the box body 1 is divided into an upper clean cavity 101 and a lower precipitation cavity 103 by the partition plate 102; the lower surface of the partition plate 102 is provided with an annular groove 105 with a downward notch, the partition plate 102 is also provided with a vent hole 106 communicated with the annular groove 105, and the partition plate 102 is also provided with a communicating hole 107 which is communicated up and down; a cyclone precipitation box 6 is arranged outside the box body 1, an inlet of the cyclone precipitation box 6 is communicated with an exhaust port of the 3D printing equipment, and an outlet of the cyclone precipitation box 6 is communicated with the precipitation cavity 103 through a first pipeline 601; when the 3D printing equipment works, black smoke and dust can be generated by impacting the powder bed at high temperature in the sintering process, waste gas containing the black smoke and the dust is discharged from an exhaust port of the 3D printing equipment, enters the cyclone precipitation box 6 from an inlet of the cyclone precipitation box 6, is subjected to cyclone dust removal to strip large-particle impurities in the waste gas, and then enters the sedimentation cavity 103 from the first pipeline 601; a filter element 104 is arranged in the lower precipitation cavity 103, the filter element 104 is in a cylindrical shape, and a sealing gasket 108 is fixed on the upper surface of the filter element 104; the sealing gasket 108 completely covers the notch of the annular groove 105; a negative pressure fan 4 is arranged on the outer wall of the box body 1, and a suction port of the negative pressure fan 4 is communicated with the vent hole 106 through a second pipeline 401; the sealing washer 108 seals the notch of the annular groove 105, the negative pressure fan 4 pumps the gas in the annular groove 105, a negative pressure space is formed in the annular groove 105, and the sealing washer 108 is adsorbed on the annular groove 105, so that the filter element 104 is fixed below the partition plate 102; in order to ensure that the annular groove 105 is continuously under negative pressure, a check valve may be further disposed on the second conduit 401; the waste gas entering the lower precipitation cavity 103 is filtered by the filter element 104 to become clean gas and enters the filter element 104; the upper cleaning cavity 101 is communicated with the interior of the filter element 104 through a communicating hole 107; an exhaust pipe 5 is fixed on the outer wall of the box body 1, and the exhaust pipe 5 is communicated with the upper cleaning cavity 101; the clean gas enters the upper clean chamber through the communication hole 107 and is finally exhausted from the exhaust pipe 5. In addition, the cyclone precipitation box 6 adopts cyclone dust removal to strip large-particle impurities in the waste gas, so that the large-particle impurities are prevented from being deposited on the surface of the filter element 104, and the service life of the filter element 104 is prolonged.
In order to facilitate the replacement of the filter element 104, an openable sealing door 8 is further provided on the box body 1. When the sealing door 8 closes the tank 1, the upper cleaning chamber 101 and the lower deposition chamber 102 can communicate only at the communication hole 107.
In the 3D printing process, the used gas is inert gas, the generated waste gas is mainly inert gas and also contains active metal, when the filter element 104 filters the waste gas, the active metal in the waste gas is easy to attach to the outer surface of the filter element 104, when the device is normally used, the box body 1 is sealed, the inside of the box body 1 is mainly inert gas, and the active metal in the box body 1 cannot be exploded; when the filter element 104 needs to be replaced, the box body 1 is opened, the active metal in the box body 1 is exposed to the air, and the active metal risks deflagration.
In this embodiment, when the filter element is replaced, in order to prevent the active metal from exploding and hurting people, the box body 1 is further provided with an atomization system 7, and the atomization system 7 comprises a water accumulation kettle 701 arranged outside the box body 1; a water outlet pipeline 702 is fixed on the water accumulation kettle 701, and a water inlet of the water outlet pipeline 702 is communicated with the interior of the water accumulation kettle 701; in order to ensure that water in the water accumulation kettle 701 can continuously and stably enter the water outlet pipeline 702, the end surface of the water inlet of the water outlet pipeline 702 is in contact with the bottom surface of the interior of the water accumulation kettle 701, and a notch penetrating through the pipe wall is formed in the end surface of the water inlet of the water outlet pipeline 702; a water supply pipe 703 is fixed on the box body 1, and a water outlet of the water outlet pipeline 702 is communicated with the water supply pipe 703; an electromagnetic valve 704 is arranged on the water outlet pipeline 702; a plurality of atomizing nozzles 705 are fixed on the inner wall of the sedimentation cavity 103, the atomizing nozzles 705 are symmetrically arranged around the filter element 104, and water inlets of the atomizing nozzles 705 are communicated with a water supply pipeline 703; water in the water collecting kettle 701 enters the water supply pipe 703 from the water outlet pipe 702, then enters the atomizing nozzle 705 from the water supply pipe 703, and finally the atomizing nozzle 705 atomizes and sprays the water. It should be noted here that at least two atomizing nozzles 705 are provided to ensure that the atomizing nozzles 705 are located around the filter element 104, so that the water mist sprayed from the atomizing nozzles 705 can completely wet the outer surface of the filter element 104, thereby preventing the active metal attached to the outer surface of the filter element 104 from exploding, and improving the safety of the device. Still be fixed with air intake pipe 706 on the ponding kettle 701, the inside of ponding kettle 701 is communicated to the gas outlet of air intake pipe 706, air intake pipe 706's air inlet intercommunication pressure equipment, pressure equipment pass through air intake pipe 706 and pressurize ponding kettle 701 is inside, with water pressure business turn over water pipe 702.
In this embodiment, the box body 1 is further provided with a pulse system 2, and the pulse system 2 includes a mounting seat 201 fixed on the outer wall of the box body 1; a gas collecting bag 202 is fixedly arranged on the mounting base 201, and inert gas is filled in the gas collecting bag 202; the air inlet of the air collection bag 202 is provided with a one-way valve 203, air is filled into the air collection bag 202 from the air inlet of the air collection bag 202, and the one-way valve 203 prevents the air in the air collection bag 202 from escaping from the air inlet, so that the interior of the air collection bag 202 is ensured to be in a high-pressure state; the air outlet of the air collecting bag 202 is communicated with a bell mouth 206 through an output pipeline 205; the bell mouth 206 is positioned in the filter element 104, and the bell mouth 206 is opened downwards; a pulse valve 204 is arranged on the output pipeline 205; under normal conditions, the pulse valve 204 closes the output pipe 205; after the pulse valve 204 is started, the output pipeline 205 is opened and closed instantly, that is, the high-pressure gas in the gas collecting bag 202 passes through the output pipeline 205 intermittently, the bell mouth 206 ejects the pulse type impact gas flow, the impact gas flow ejects the inner wall of the filter element 104, and the smoke deposited on the filter element 104 is stripped reversely, so that the service life of the filter element 104 is greatly prolonged. Since the gas in the filter element 104 can rapidly flow into the upper cleaning chamber 101 through the communicating hole 107, which will reduce the effect of the impinging gas flow on the reverse stripping of the soot deposited on the filter element 104, the pressing mechanism 3 is further provided on the box body 1, and the communicating hole 107 can be sealed by the pressing mechanism 3.
In addition, the bell mouth 206 is the ring form, bell mouth 206 and the coincidence of the axis of antithetical couplet hole 107, bell mouth 206 with the coincidence of the axis of filter core 104. The impact air flow sprayed from the bell mouth 206 can be ensured to be uniformly applied to the filter element 104.
In order to seal the connecting hole 107, as shown in fig. 4, in this embodiment, a mounting hole 109 is formed in a top plate of the box body 1, the pressing mechanism 3 includes an air cylinder 301 mounted at the mounting hole 109, and an expansion rod 303 of the air cylinder 301 can extend into the upper cleaning cavity 101; an end sealing plug 304 is fixed on the end face of the free end of the telescopic rod 303; when the telescopic rod 303 moves downwards and the end sealing plug 304 contacts the upper surface of the partition board 102, the end sealing plug 304 completely covers the communicating hole 107, the communicating hole 107 is sealed, and at the moment, the impact air flow sprayed out from the bell mouth 206 cannot rapidly flow into the upper cleaning cavity 101 from the communicating hole 107, so that the effect of the impact air flow on reversely stripping deposited smoke dust is ensured.
When the communication hole 107 is sealed, the pulse valve 204 is started, and the pulse-type impact airflow ejected from the bell mouth 206 can increase the air pressure in the filter element 104 instantaneously, so that the filter element 104 falls off from the partition plate 102 to avoid the sudden increase of the internal air pressure, and the end sealing plug 304 is provided with the pressure release valve 305. Then, when the air pressure in the filter element 104 reaches a certain level, the pressure relief valve 305 automatically opens to relieve the pressure, so as to prevent the filter element 104 from falling off from the partition plate 102 due to excessive air pressure in the filter element 104 while ensuring the effect of reverse stripping of deposited soot by the impinging air flow.
It should be noted that when the pressure relief valve 305 is not working properly, the air pressure inside the filter element 104 is increased instantaneously by the pulse air flow, and since the filter element 104 is not rigidly connected to the partition plate 102, even if the air pressure inside the filter element 104 is too high, the filter element 104 is separated, but the filter element 104 is not damaged, and if the filter element 104 is rigidly connected to the partition plate 102, the filter element 104 is easily damaged at the connection or the filter holes by the pulse air flow.
In order to ensure the sealing of the box body 1 and avoid air leakage at the connection position of the air cylinder, as shown in fig. 6, the pressing mechanism 3 further comprises a tubular step flange 302, and an annular gap 3023 is formed in the outer wall of the upper end of the step flange 302; the upper end surface of the step flange 302 penetrates through the mounting hole 109 to be fixed with the bottom surface of the cylinder 301 in a sealing manner, the top plate of the box body 1 is clamped between the annular gap 3023 and the cylinder 301, and a rubber pad is arranged between the annular gap 3023 and the top plate of the box body 1; a first annular step 3021 and a second annular step 3022 are arranged in the stepped flange 302 from bottom to top, a first accommodating hole is formed between the lower end surface of the stepped flange 302 and the first annular step 3021, and the first annular step 3021 and the second annular step 3022 are second accommodating holes; the diameter of the inner ring of the first annular step 3021 is smaller than that of the end sealing plug 304, and the diameter of the outer ring of the first annular step 3021 is not smaller than that of the end sealing plug 304; when the extension rod 303 moves upward, the tip sealing plug 304 enters the first receiving hole, and the upper end surface of the tip sealing plug 304 abuts against the first annular step 3021. Under the normal dust removal state, the end sealing plug 304 is located in the first accommodating hole, and at this time, the end sealing plug 304, the rubber pad and the stepped flange 302 are matched with each other to ensure the sealing of the box body 1.
In order to ensure that the telescopic rod 303 applies uniform pressure to the end sealing plug 304 and that the end sealing plug 304 applies uniform pressure to the periphery of the connecting through hole 107, the mounting hole 109 coincides with the central axis of the connecting through hole 107.
In this embodiment, the bottom of the lower settling chamber 103 is further provided with a material collecting box for collecting the solid waste filtered from the exhaust gas by the filter element 104.
a. When purifying waste gas: the tip sealing plug 304 is positioned in the first receiving hole; the negative pressure fan 4 sucks the gas in the annular groove 105, a negative pressure space is formed in the annular groove 105, and the sealing gasket 108 is adsorbed on the annular groove 105, so that the filter element 104 is fixed below the partition plate 102; the pulse valve 204 closes the output pipe 205;
the 3D printing equipment works, waste gas containing black smoke and raised dust generated by sintering is discharged from an exhaust port of the 3D printing equipment, enters the cyclone precipitation box 6 from an inlet of the cyclone precipitation box 6, is subjected to cyclone dust removal to strip large-particle impurities in the cyclone precipitation box, and then enters the lower precipitation cavity 103 from the first pipeline 601; the waste gas entering the lower precipitation cavity 103 is filtered by the filter element 104 to become clean gas and enters the filter element 104; the clean gas enters the upper clean chamber through the communication hole 107 and is finally exhausted from the exhaust pipe 5.
b. When cleaning the cartridge 104: starting the air cylinder 301, moving the telescopic rod 303 downwards, and sealing the communication hole 107 when the end sealing plug 304 contacts the upper surface of the partition plate 102; then, the pulse valve 204 is started, the horn mouth 206 ejects pulse type impact air flow, the impact air flow ejects the inner wall of the filter element 104, and the smoke deposited on the filter element 104 is stripped reversely; after the filter cartridge 104 is cleaned, the cylinder 301 is actuated again, the telescopic rod 303 moves upward, the head sealing plug 304 enters the first receiving hole, and the upper end surface of the head sealing plug 304 abuts against the first annular step 3021.
c. When the filter element 104 is replaced, the pressurizing device is started, the inside of the water accumulation kettle 701 is pressurized through the air inlet pipe 706, water in the water accumulation kettle 701 enters the water supply pipe 703 from the water outlet pipe 702 and then enters the atomizing nozzle 705 from the water supply pipe 703, the atomizing nozzle 705 atomizes and sprays the water, then the sealing door 8 is opened, and the sealing door 8 is closed after the filter element 104 is replaced.
Claims (9)
1. A purification device for 3D printing, characterized in that the purification device comprises:
a box body (1);
the partition plate (102) is fixed in the box body (1), and the box body (1) is divided into an upper clean cavity (101) and a lower precipitation cavity (103) by the partition plate (102); the lower surface of the partition plate (102) is provided with an annular groove (105) with a downward notch, the partition plate (102) is also provided with a vent hole (106) communicated with the annular groove (105), and the partition plate (102) is also provided with a through hole (107) which is communicated up and down;
the cyclone sedimentation box (6) is arranged outside the box body (1), an inlet of the cyclone sedimentation box (6) is communicated with an exhaust port of the 3D printing equipment, and an outlet of the cyclone sedimentation box (6) is communicated with the sedimentation cavity (103) through a first pipeline (601);
the filter element (104) is arranged in the lower precipitation cavity (103), the filter element (104) is in a barrel shape, and a sealing gasket (108) is fixed on the upper surface of the filter element (104); the sealing gasket (108) completely covers the notch of the annular groove (105);
the negative pressure fan (4) is arranged on the outer wall of the box body (1), and a suction port of the negative pressure fan (4) is communicated with the vent hole (106) through a second pipeline (401);
the upper cleaning cavity (101) is communicated with the interior of the filter element (104) through a communicating hole (107);
the exhaust pipe (5) is fixed on the outer wall of the box body (1), and the exhaust pipe (5) is communicated with the upper clean cavity (101).
2. The purging device for 3D printing according to claim 1, wherein; still be equipped with atomizing system (7) on box (1), atomizing system (7) include:
a water accumulation kettle (701) arranged outside the box body (1);
a water outlet pipeline (702) fixed on the water accumulation kettle (701), wherein a water inlet of the water outlet pipeline (702) is communicated with the inside of the water accumulation kettle (701);
a water supply pipe (703) fixed on the box body (1), wherein the water outlet of the water outlet pipeline (702) is communicated with the water supply pipe (703);
a solenoid valve (704) mounted on the outlet conduit (702);
the atomizing nozzles (705) are fixed on the inner wall of the lower settling cavity (103), the atomizing nozzles (705) are symmetrically arranged around the filter element (104), and a water inlet of the atomizing nozzles (705) is communicated with a water supply pipeline (703);
the gas inlet pipeline (706) is fixed on the water accumulation kettle (701), the gas outlet of the gas inlet pipeline (706) is communicated with the interior of the water accumulation kettle (701), and the gas inlet of the gas inlet pipeline (706) is communicated with a pressurizing device.
3. The purging device for 3D printing according to claim 1, wherein; still be equipped with pulse system (2) on box (1), pulse system (2) include:
a mounting seat (201) fixed on the outer wall of the box body (1);
the air collecting bag (202) is arranged on the mounting seat (201);
a check valve (203) arranged at the air inlet of the air collection bag (202);
an output pipeline (205) with one end communicated with the air outlet of the air collecting bag (202);
a pulse valve (204) arranged on the output pipeline (205);
a bell mouth (206) fixed at the other end of the output pipeline (205), wherein the bell mouth (206) is positioned in the filter element (104), and the bell mouth (206) is opened downwards;
the box body (1) is further provided with a pressing mechanism (3), and the pressing mechanism (3) can seal the communicating hole (107).
4. The purging device for 3D printing according to claim 3, wherein; horn mouth (206) are the ring form, horn mouth (206) and the coincidence of the axis of antithetical couplet through-hole (107), horn mouth (206) with the coincidence of the axis of filter core (104).
5. The purging device for 3D printing according to claim 3, wherein; a top plate of the box body (1) is provided with a mounting hole (109), and the mounting hole (109) is superposed with the central axis of the through hole (107); the pressing mechanism (3) includes:
the air cylinder (301) is arranged at the mounting hole (109), and a telescopic rod (303) of the air cylinder (301) can extend into the upper cleaning cavity (101);
the end sealing plug (304) is fixed on the end face of the free end of the telescopic rod (303), and a pressure release valve (305) is installed on the end sealing plug (304);
when the telescopic rod (303) moves downwards and the end sealing plug (304) contacts the upper surface of the partition plate (102), the end sealing plug (304) completely covers the communication hole (107), and the communication hole (107) is sealed.
6. The purging device for 3D printing according to claim 5, wherein: the pressing mechanism (3) further comprises a tubular stepped flange (302), and an annular gap (3023) is formed in the outer wall of the upper end of the stepped flange (302); the upper end face of the step flange (302) penetrates through the mounting hole (109) to be fixed with the bottom face of the cylinder (301) in a sealing mode, the top plate of the box body (1) is clamped between the annular notch (3023) and the cylinder (301), and a rubber pad is arranged between the annular notch (3023) and the top plate of the box body (1); a first annular step (3021) and a second annular step (3022) are arranged in the stepped flange (302) from bottom to top, a first accommodating hole is formed between the lower end face of the stepped flange (302) and the first annular step (3021), and the first annular step (3021) and the second annular step (3022) are second accommodating holes; the diameter of the inner ring of the first annular step (3021) is smaller than that of the end sealing plug (304), and the diameter of the outer ring of the first annular step (3021) is not smaller than that of the end sealing plug (304);
when the telescopic rod (303) moves upwards, the head sealing plug (304) enters the first accommodating hole, and the upper end surface of the head sealing plug (304) is tightly attached to the first annular step (3021).
7. The purging device for 3D printing according to claim 5, wherein: when the communication hole (107) is sealed, the pulse valve (204) is actuated.
8. The purging device for 3D printing according to claim 1, wherein; the bottom of the lower sedimentation cavity (103) is also provided with a material collecting box.
9. The purging device for 3D printing according to claim 1, wherein; the box body (1) is also provided with an openable sealing door (8).
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| CN202111136660.9A CN113750670B (en) | 2021-09-27 | 2021-09-27 | A purifier for 3D prints |
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| CN202111136660.9A CN113750670B (en) | 2021-09-27 | 2021-09-27 | A purifier for 3D prints |
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| CN113750670B CN113750670B (en) | 2023-04-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115156557A (en) * | 2022-07-21 | 2022-10-11 | 南京铖联激光科技有限公司 | Real-time dust collector of 3D printing |
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| CN113750670B (en) | 2023-04-07 |
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