Smoke dust filtering device for metal powder 3D printer
By introducing impurity separation channels and multi-stage filter mechanisms into the dust filtration device of a metal powder 3D printer, the problem of large particles of impurities directly entering the filter element is solved, the filter element life is extended and the filtration effect is improved, and stable dust filtration and recycling are achieved.
Patent Information
- Application Number
- CN202423215516.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-12-25
AI Technical Summary
In existing metal powder 3D printers, large particles of impurities in high-temperature dust enter the filter element directly without being screened, causing damage to the filter element and affecting its service life.
A dust filtration device including an impurity separation channel and a filter element mechanism was designed. Large particulate impurities are separated and collected by a blocking tube to prevent them from entering the filter element. Multi-stage filtration is performed using primary and secondary filter elements to ensure that small particulate impurities can pass through the filter element.
It effectively prevents large particles of impurities from damaging the filter element, extends the filter element's service life, and improves the filtration effect through multi-stage filtration, forming a closed-loop circulating filtration system to ensure the stable operation of the metal powder 3D printer.
Smart Images
Figure CN223800259U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a smoke filter device for metal powder 3D printer. BACKGROUND
[0002] The high-temperature smoke produced by laser sintering metal powder in the forming bin of the current laser selective metal powder 3D printer is directly extracted through the pipeline and transported into the smoke filter device, and the filter element of the smoke filter device is used for filtering treatment, the high-temperature smoke contains a large amount of impurities with different particle sizes, and the pipeline does not filter and screen these impurities in the transportation process, so that a large amount of large-particle impurities will enter the filter element along with the high-temperature smoke, which is easy to cause damage to the filter element and affect the service life. SUMMARY
[0003] The utility model aims at providing a smoke filter device for metal powder 3D printer to solve the above-mentioned technical problem.
[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a smoke filter device for metal powder 3D printer, including impurity separation channel and filter element mechanism, one end of impurity separation channel is connected at the inlet end of filter element mechanism, impurity separation channel includes first channel, second channel and separation collection barrel, the first end of first channel is used for connecting the exhaust end of the forming bin of metal powder 3D printer, the last end of first channel is connected at the top of the periphery of separation collection barrel, the first end of second channel is connected at the top of separation collection barrel, the last end of second channel is connected with the first end of filter element mechanism, the inner top of separation collection barrel is provided with the blocking pipe that is connected with the first end of second channel and is communicated, is used for blocking the large-particle impurities that are transported to separation collection barrel in first channel, so that the large-particle impurities drop down to the bottom of separation collection barrel and are collected, and the small-particle impurities enter filter element mechanism through blocking pipe and second channel in sequence and are filtered.
[0005] Preferably, the separation collection barrel includes a separation barrel and a collection barrel that are detachably connected in an up-down manner, the blocking pipe is arranged at the center of the inner top of the separation barrel, and the first channel is tangentially arranged at the periphery of the top of the separation barrel.
[0006] Preferably, the separation barrel includes a cylindrical body and a conical body that are integrally formed in an up-down manner.
[0007] Preferably, the utility model further includes an output recovery channel and an air extraction mechanism, the output recovery channel includes a first output channel and a second output channel, the air extraction mechanism is installed between the first output channel and the second output channel, the first end of the first output channel is connected with the last end of the filter element mechanism, and the last end of the second output channel is used for connecting the air inlet end of the forming bin of the metal powder 3D printer.
[0008] Preferably, the second output channel is externally connected with an air discharge channel, and a valve is installed on the air discharge channel.
[0009] Preferably, the filter core mechanism comprises a primary filter core mechanism and a secondary filter core mechanism connected in sequence, the primary filter core mechanism comprises a box body and at least one primary filter core piece installed in the box body, an air outlet is arranged at the inner top end of the box body, an upper connecting piece is arranged around the air outlet in the box body, and a lower connecting piece is arranged around the top end of the primary filter core piece; the upper connecting piece and the lower connecting piece are connected through screwing to achieve detachable installation of the primary filter core piece below the air outlet.
[0010] Preferably, the upper connecting piece is a ring-shaped cover, a plurality of first outer screwing pieces are arranged on the circumferential outer wall of the ring-shaped cover and extend radially inward, a plurality of first inner screwing pieces are arranged on the circumferential inner wall of the ring-shaped cover and extend radially outward, the lower connecting piece is a ring-shaped seat, a plurality of second outer screwing pieces are arranged on the circumferential outer wall of the ring-shaped seat and extend radially outward, a plurality of second inner screwing pieces are arranged on the circumferential inner wall of the ring-shaped seat and extend radially inward, the first inner screwing pieces and the second inner screwing pieces are connected through corresponding rotation, and the first outer screwing pieces and the second outer screwing pieces are connected through corresponding rotation.
[0011] Preferably, the secondary filter core mechanism is installed outside the box body and connected with the air outlet of the box body.
[0012] Preferably, the secondary filter core mechanism comprises a shell and a secondary filter core piece arranged in the shell.
[0013] Preferably, the primary filter core piece and the secondary filter core piece are sintered filter core pieces, the filtering accuracy of which is not more than 1 micrometer, and the bottom end of the box body is connected with a primary collection barrel.
[0014] The utility model has the following beneficial effects:
[0015] The utility model discloses a blocking pipe is blocked to the first channel and is transported to the big particle impurity in the separation collection barrel, makes big particle impurity drop down to the bottom of separation collection barrel and collects, and small particle impurity then sequentially passes through the blocking pipe, the second channel and enters the filter core mechanism and filters, thereby can filter big particle impurity, prevent big particle impurity from entering the filter core mechanism and causing filter core damage along with the smoke and dust upwards, guarantee the filtering effect, prolong the service life of filter core mechanism. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is the appearance schematic drawing of the embodiment of the utility model.
[0017] Figure 2 It is the perspective view of the internal structure of the embodiment of the utility model after hiding the shell.
[0018] Figure 3 It is the front view of the internal structure of the embodiment of the utility model after hiding the shell.
[0019] Figure 4 is the right view of the internal structure of the embodiment of the utility model after hiding the shell.
[0020] Figure 5 is the sectional view of the separation and collection barrel of the embodiment of the utility model.
[0021] Figure 6 is the internal structure schematic view of the primary filter core mechanism of the embodiment of the utility model.
[0022] Figure 7 is the structure schematic view of the primary filter core part of the embodiment of the utility model.
[0023] Figure 8 is the exploded schematic view of the secondary filter core mechanism of the embodiment of the utility model.
[0024] Fig. 1 first channel, 2 second channel, 3 separation and collection barrel, 31 separation barrel, 32 collection barrel, 33 blocking pipe, 4 primary filter core mechanism, 41 box, 42 primary filter core part, 43 air outlet, 44 primary collection barrel, 5 secondary filter core mechanism, 51 shell, 52 secondary filter core part, 6 upper connecting piece, 61 first outer screw buckle, 62 first inner screw buckle, 7 lower connecting piece, 71 second outer screw buckle, 72 second inner screw buckle, 8 first output channel, 9 second output channel, 10 air suction mechanism, 11 air discharge channel, 12 valve, 13 shell. DETAILED DESCRIPTION
[0025] To further illustrate the embodiments, the utility model provides the drawing. These drawings are part of the utility model disclosure, which mainly serves to illustrate the embodiments, and can be combined with the relevant description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawing are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0026] In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawing, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0027] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "connects", "connects" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connects;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium.
[0028] Referring to Figures 1-8 As shown in the utility model, as an embodiment of the utility model, a kind of for metal powder 3D printer's smoke dust filtering device is provided, including impurity separation channel and filter core mechanism, one end of impurity separation channel is connected in the inlet end of filter core mechanism, impurity separation channel includes first channel 1, second channel 2 and separation collection barrel 3, the first end of first channel 1 is used to connect the exhaust end of the forming bin of metal powder 3D printer, the end of first channel 1 is connected in the top of separation collection barrel 3, the first end of second channel 2 is connected in the top of separation collection barrel 3, the end of second channel 2 is connected with the first end of filter core mechanism, the inner top of separation collection barrel 3 is provided with the blocking pipe 33 of the first end of second channel 2 butt joint communication, for the first channel 1 is transported to the large particle impurities in separation collection barrel 3 and is blocked, so that large particle impurities drop down to the bottom of separation collection barrel 3 and are collected, small particle impurities then sequentially pass through blocking pipe 33, second channel 2 and enter filter core mechanism and are filtered, so that large particle impurities can be filtered, prevent large particle impurities from entering filter core mechanism and cause filter core damage, ensure filtering effect, prolong the service life of filter core mechanism.
[0029] Wherein, large particle impurities refer to the particle impurities with size greater than 5 microns, and large particle impurities refer to the particle impurities with size between 1 and 5 microns.
[0030] Wherein, in order to ensure airtightness, the smoke dust filtering device of the metal powder 3D printer of the utility model is provided with a shell 13 outside.
[0031] Specifically, the separation and collection barrel 3 comprises a separation barrel 31 and a collection barrel 32 which are detachably connected in sequence, the separation barrel 31 comprises a cylindrical body and a conical body which are integrally formed in sequence, large-particle impurities can sequentially pass through the cylindrical body and the conical body and fall into the collection barrel 32 for collection, the collection barrel 32 can be detached and emptied after being filled with the large-particle impurities, the blocking pipe 33 is arranged at the center of the inner top of the separation barrel 31, and the first channel 1 is tangentially arranged at the circumferential side of the top of the separation barrel 31, that is, the air outlet end of the first channel 1 is not directly arranged opposite to the blocking pipe 33, but is inscribed between the outer wall of the blocking pipe 33 and the inner wall of the separation barrel 31, so that the large-particle impurities can form a cyclone and gradually fall into the collection barrel 32, thereby preventing the large-particle impurities from directly impacting and damaging the blocking pipe 33.
[0032] In the embodiment, the output recovery channel and the air extraction mechanism 10 are further included, the air extraction mechanism 10 is an air extractor, the output recovery channel comprises the first output channel 8 and the second output channel 9, the air extraction mechanism 10 is installed between the first output channel 8 and the second output channel 9, the first end of the first output channel 8 is connected with the end of the filter core mechanism, and the end of the second output channel 9 is used for connecting the air inlet end of the forming bin of the metal powder 3D printer, so that the smoke dust filtering device for the metal powder 3D printer and the forming bin of the metal powder 3D printer form a closed-loop circulating filtering system, the exhaust gas is repeatedly filtered and recycled, and the energy saving and environmental protection are better.
[0033] In the embodiment, the air discharge channel 11 is externally connected to the second output channel 9, the valve 12 is installed on the air discharge channel 11, the valve 12 is opened to discharge the air in the circulating filtering system to the outside, the purity of the inert gas in the circulating filtering system is ensured, and the stable operation of the metal powder 3D printer is ensured.
[0034] In the embodiment, the filter core mechanism comprises the first filter core mechanism 4 and the second filter core mechanism 5 which are sequentially connected, the first filter core mechanism 4 comprises a box body 41 and a plurality of first filter core pieces 42 which are installed in the box body 41, the inner top end of the box body 41 is provided with an air outlet 43, the periphery of the box body 41 is provided with the upper connecting piece 6 corresponding to the air outlet 43, the periphery of the top end of the first filter core piece 42 is provided with the lower connecting piece 7, and the upper connecting piece 6 and the lower connecting piece 7 are detachably connected by screwing and buckling to realize detachable installation of the first filter core piece 42 below the air outlet 43.
[0035] Specifically, the upper connecting piece 6 is a ring-shaped cover, a plurality of first outer rotating buckles 61 are arranged on the circumferential outer wall of the ring-shaped cover and extend radially inward, a plurality of first inner rotating buckles 62 are arranged on the circumferential inner wall of the ring-shaped cover and extend radially outward, the lower connecting piece 7 is a ring-shaped seat, a plurality of second outer rotating buckles 71 are arranged on the circumferential outer wall of the ring-shaped seat and extend radially outward, a plurality of second inner rotating buckles 72 are arranged on the circumferential inner wall of the ring-shaped seat and extend radially inward, the first inner rotating buckles 62 and the second inner rotating buckles 72 are correspondingly rotated and buckled, the first outer rotating buckles 61 and the second outer rotating buckles 71 are correspondingly rotated and buckled, and each rotating buckle is uniformly arranged in the circumferential direction, so that the installation and disassembly process of the primary filter element 42 is more convenient and fast, and the replacement and maintenance are facilitated, and the connection is stable and reliable.
[0036] In the embodiment, the secondary filter element mechanism 5 is installed outside the box body 41 and connected with the air outlet 43 of the box body 41, and the smoke is filtered by the plurality of primary filter elements 42 and then filtered again by the secondary filter element mechanism 5, so that the filtering effect is ensured.
[0037] In the embodiment, the secondary filter element mechanism 5 includes a shell 51 and a secondary filter element 52 arranged in the shell 51, and the primary filter element 42 and the secondary filter element 52 are both sintered filter elements, which have high strength and rigidity and a filtering precision of not more than 1 micron, so that particles with a size greater than 1 micron can be filtered, and the filtering precision is higher, and the bottom end of the box body 41 is connected with a primary collection barrel 44 for collecting particles with a size greater than 1 micron.
[0038] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes fall within the protection scope of the utility model.
Claims
1. A fume filtration device for a metal powder 3D printer, characterized in that: The impurity separation channel and the filter core mechanism are connected at one end of the filter core mechanism, and the impurity separation channel includes a first channel, a second channel and a separation and collection barrel. The first channel is used for connecting the exhaust end of the forming bin of the metal powder 3D printer. The end of the first channel is connected to the top of the separation and collection barrel. The first end of the second channel is connected to the top of the separation and collection barrel. The end of the second channel is connected to the first end of the filter core mechanism. The inner top of the separation and collection barrel is provided with a blocking pipe connected to the first end of the second channel. The blocking pipe blocks the large-particle impurities transported into the separation and collection barrel through the first channel, so that the large-particle impurities fall downward to the bottom of the separation and collection barrel for collection, and the small-particle impurities pass through the blocking pipe and the second channel upward into the filter core mechanism for filtration.
2. The fume filtering device for a metal powder 3D printer according to claim 1, characterized in that: The separation and collection barrel includes a separation barrel and a collection barrel which are detachably connected. The blocking pipe is arranged at the center of the inner top of the separation barrel. The first channel is tangentially arranged at the top of the separation barrel.
3. The fume filtering device for a metal powder 3D printer according to claim 2, characterized in that: The separation barrel includes a cylindrical body and a conical body which are integrally formed.
4. The fume filtering device for a metal powder 3D printer according to claim 1, characterized in that: The output recovery channel includes a first output channel and a second output channel. The suction mechanism is installed between the first output channel and the second output channel. The first end of the first output channel is connected to the end of the filter core mechanism. The end of the second output channel is used for connecting the air inlet end of the forming bin of the metal powder 3D printer.
5. The soot filtering device for a metal powder 3D printer according to claim 4, characterized in that: The air discharge channel is installed on the second output channel. The valve is installed on the air discharge channel.
6. The fume filtering device for a metal powder 3D printer according to claim 1, characterized in that: The filter core mechanism includes a primary filter core mechanism and a secondary filter core mechanism which are sequentially connected. The primary filter core mechanism includes a box body and at least one primary filter core piece installed in the box body. The inner top of the box body is provided with an air outlet. The outer periphery of the box body is provided with an upper connecting piece corresponding to the air outlet. The top of the primary filter core piece is provided with a lower connecting piece. The upper connecting piece and the lower connecting piece are connected by screwing to realize detachable installation of the primary filter core piece below the air outlet.
7. The soot filtering device for a metal powder 3D printer according to claim 6, characterized in that: The upper connecting piece is a ring-shaped cover. The circumferential outer wall of the ring-shaped cover is radially inwardly extended and provided with a plurality of first outer screwing buckles. The circumferential inner wall of the ring-shaped cover is radially outwardly extended and provided with a plurality of first inner screwing buckles. The lower connecting piece is a ring-shaped seat. The circumferential outer wall of the ring-shaped seat is radially outwardly extended and provided with a plurality of second outer screwing buckles. The circumferential inner wall of the ring-shaped seat is radially inwardly extended and provided with a plurality of second inner screwing buckles. The first inner screwing buckle and the second inner screwing buckle are correspondingly screwed. The first outer screwing buckle and the second outer screwing buckle are correspondingly screwed.
8. The soot filtering device for a metal powder 3D printer according to claim 6, characterized in that: The secondary filter core mechanism is installed outside the box body and connected to the air outlet of the box body.
9. The fume filtering device for a metal powder 3D printer according to claim 6, characterized in that: The secondary filter core mechanism includes a shell and a secondary filter core piece arranged in the shell.
10. The soot filtering device for a metal powder 3D printer according to claim 9, characterized in that: The primary filter core piece and the secondary filter core piece are both sintered filter core pieces with a filtering accuracy of not more than 1 micrometer. The bottom of the box body is connected to a primary collection barrel.