CN209754015U - Smoke filtering and powder recovering device for metal selective laser melting - Google Patents
Smoke filtering and powder recovering device for metal selective laser melting Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 70
- 238000002844 melting Methods 0.000 title claims abstract description 25
- 230000008018 melting Effects 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 238000001914 filtration Methods 0.000 title claims 6
- 239000000779 smoke Substances 0.000 title abstract description 28
- 238000000926 separation method Methods 0.000 claims abstract description 47
- 238000011084 recovery Methods 0.000 claims abstract description 42
- 239000000428 dust Substances 0.000 claims abstract description 33
- 238000000465 moulding Methods 0.000 claims abstract description 26
- 239000004071 soot Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 13
- 230000007704 transition Effects 0.000 claims description 3
- 230000002452 interceptive effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
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- 239000002356 single layer Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
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- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
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- 238000004064 recycling Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- 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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Abstract
本实用新型涉及一种金属选区激光熔化用的烟尘过滤及粉末回收装置,包括成型缸,与成型缸相连成一闭合循环管道回路的烟尘过滤装置,和粉末回收装置,其也与成型缸相连,在成型缸的上方设有吸尘罩,并通过管道与分离区相连。本实用新型解决了选区激光熔化成形过程烟尘难以有效处理的难题,实现了烟尘的有效实时处理,保证了零件的高质量成形;本实用新型还提高了金属粉末的回收效率,降低了由人工操作而造成的失误。
The utility model relates to a soot filter and powder recovery device for metal selective laser melting, which includes a forming cylinder, which is connected with the forming cylinder to form a closed cycle pipeline loop soot filter device, and a powder recovery device, which is also connected with the forming cylinder. There is a vacuum hood above the molding cylinder, and it is connected with the separation area through a pipeline. The utility model solves the problem that it is difficult to effectively deal with the smoke and dust in the selective laser melting forming process, realizes the effective real-time treatment of the smoke and dust, and ensures the high-quality forming of parts; the utility model also improves the recovery efficiency of metal powder and reduces the need for manual operation. resulting in errors.
Description
技术领域technical field
本实用新型涉及3D快速成型领域,涉及一种金属选区激光熔化用的烟尘过滤及粉末回收装置。The utility model relates to the field of 3D rapid prototyping, and relates to a dust filter and powder recovery device for laser melting of selected metal areas.
背景技术Background technique
选区激光熔化(SLM)技术是制造复杂零件的一种有效方式,金属选区激光熔化的能量来源为光纤激光器,激光只熔化选择区域的金属粉末,未熔化区域粉末可以回收再利用,大大提高了材料的利用率。选区激光熔化技术制件只需进行少量加工,就可以达到较高的精度要求,无需其他后续处理工艺,这种近净成型技术的诸多优点使得其应用范围越来越广。Selective laser melting (SLM) technology is an effective way to manufacture complex parts. The energy source of metal selective laser melting is fiber laser. The laser only melts the metal powder in the selected area, and the powder in the unmelted area can be recycled and reused, which greatly improves the material quality. utilization rate. Selective laser melting technology can achieve high precision requirements with only a small amount of processing, without other subsequent processing processes. The many advantages of this near-net shape technology make its application range wider and wider.
然而,选区激光熔化成型过程中产生的烟尘难以有效处理,由于重力作用烟尘会落在成形零件表面,对零件性能产生影响;而且,选区激光熔化成型结束后,金属粉末回收一直是难点之一,这一问题在一定程度上也阻碍了这项技术的推广和规模化生产的发展。现有金属粉末回收方式基本采用人工方式,这种方式降低了生产效率,另外,还可能造成操作失误,对回收的金属粉末造成污染和浪费,而且在空气中操作大量金属粉末危险性较高。However, it is difficult to effectively deal with the smoke and dust generated during the selective laser melting molding process. Due to the gravity, the smoke and dust will fall on the surface of the formed part, which will affect the performance of the part; moreover, after the selective laser melting molding is completed, metal powder recovery has always been one of the difficulties. This problem also hinders the promotion of this technology and the development of large-scale production to a certain extent. The existing metal powder recovery method basically adopts the manual method, which reduces the production efficiency. In addition, it may also cause operational errors, pollution and waste of the recovered metal powder, and it is dangerous to operate a large amount of metal powder in the air.
发明内容Contents of the invention
为了解决上述问题,本实用新型提供了一种金属选区激光熔化用的烟尘过滤及粉末回收装置,以及使用该烟尘过滤及粉末回收装置的方法,In order to solve the above problems, the utility model provides a smoke filter and powder recovery device for metal selective laser melting, and a method of using the smoke filter and powder recovery device,
本实用新型的技术方案如下:The technical scheme of the utility model is as follows:
一种金属选区激光熔化用的烟尘过滤及粉末回收装置,包括A smoke filter and powder recovery device for metal selective laser melting, including
成型缸,其为选区激光熔化成型区;A forming cylinder, which is a selective laser melting forming area;
烟尘过滤装置,其与所述的成型缸相连,成一闭合的循环管道回路,其中,所述的烟尘过滤装置包括设在管道回路上的第一离心式通风机、冷却装置和过滤器;A soot filter device, which is connected with the forming cylinder to form a closed circulation pipeline circuit, wherein the soot filter device includes a first centrifugal fan, a cooling device and a filter arranged on the pipeline circuit;
和,粉末回收装置,其与所述的成型缸相连,其中,所述的粉末回收装置包括吸尘罩、第二离心式通风机、分离区、鼓风机和集粉盒,所述的吸尘罩设于所述的成型缸的上方,并通过管道与所述的分离区相连,所述的第二离心式通风机设于该管道上,所述的集粉盒设于所述的分离区的下端,所述的鼓风机与所述的分离区相连。And, a powder recovery device, which is connected to the molding cylinder, wherein the powder recovery device includes a dust suction hood, a second centrifugal fan, a separation area, a blower and a powder collection box, and the dust suction hood It is arranged above the forming cylinder and connected to the separation area through a pipe, the second centrifugal fan is arranged on the pipe, and the powder collecting box is arranged in the separation area At the lower end, the blower is connected with the separation zone.
本实用新型的一实施例中,所述的分离区包括由两级相连的分离室构成,其中,所述的吸尘罩通过管道与第一级分离室相连,所述的集粉盒设于所述的第一级分离室的下端,所述的鼓风机与第二级分离室相连,在所述的第二级分离室的上端设有出风口。In one embodiment of the present utility model, the separation area is composed of two-stage connected separation chambers, wherein the dust collection hood is connected with the first-stage separation chamber through pipes, and the powder collecting box is located in the At the lower end of the first-stage separation chamber, the blower is connected with the second-stage separation chamber, and an air outlet is provided at the upper end of the second-stage separation chamber.
本实用新型的一实施例中,所述的分离室由空心圆柱体经平滑过渡至空心圆锥体构成。In an embodiment of the present invention, the separation chamber is formed of a hollow cylinder through a smooth transition to a hollow cone.
本实用新型的一实施例中,所述的吸尘罩为可拆卸式连接至所述的成型缸上方进行吸附和离开所述的成型缸上方区域避免干扰激光束熔化成型。In an embodiment of the present invention, the dust collection hood is detachably connected to the upper part of the forming cylinder to absorb and leave the area above the forming cylinder to avoid interference with the laser beam melting and forming.
本实用新型的一实施例中,所述的第一离心式通风机设于所述的成型缸的一侧,所述的过滤器设于所述的成型缸的另一侧,所述的冷却装置设于所述的成型缸与所述的过滤器之间。In one embodiment of the present utility model, the first centrifugal fan is arranged on one side of the forming cylinder, the filter is arranged on the other side of the forming cylinder, and the cooling The device is arranged between the forming cylinder and the filter.
本实用新型的一实施例中,所述的冷却装置包括水箱,其中,穿过所述的水箱的管道为螺旋式设计。In an embodiment of the present invention, the cooling device includes a water tank, wherein the pipe passing through the water tank is designed in a spiral manner.
本实用新型的一实施例中,连通所述的成型缸与所述的水箱的管道由耐高温材料制成。In an embodiment of the present invention, the pipe connecting the forming cylinder and the water tank is made of high temperature resistant material.
本实用新型的一实施例中,所述的耐高温材料为无规共聚聚丙烯。In an embodiment of the present utility model, the high temperature resistant material is random copolymerized polypropylene.
本实用新型的一实施例中,在近所述的水箱侧的所述的成型缸管道上设有阻火圈。In an embodiment of the present utility model, a fire arresting ring is provided on the pipe of the forming cylinder near the side of the water tank.
本实用新型还公开了上述的烟尘过滤及粉末回收装置的使用方法,包括以下步骤:The utility model also discloses the use method of the above-mentioned smoke filter and powder recovery device, which includes the following steps:
(1)在选区激光熔化之前,将所述的成型缸和所述的烟尘过滤装置里的气体抽空并充满惰性气体,然后,进行单层截面熔化成型;(1) Before the selective laser melting, the gas in the forming cylinder and the dust filter device is evacuated and filled with an inert gas, and then, a single-layer cross-section is melted and formed;
(2)开启所述的第一离心式通风机,将所述的成型缸里的烟尘依次送入所述的冷却装置和所述的过滤器,过滤烟尘中的杂质;(2) Turn on the first centrifugal fan, send the soot in the forming cylinder into the cooling device and the filter in sequence, and filter the impurities in the soot;
(3)开启所述的第二离心式通风机,将过滤后的烟尘抽至所述的第一级分离室作为一次风,向下旋转,旋转气流下旋到达反射板反转成上升气流,此时,旋转气流中所含的粗粉末颗粒由于离心力和重力的作用,从气流中分离出来掉入所述的集粉盒,而上升气流中的细粉末颗粒向旋转气流的外周汇集;(3) Turn on the second centrifugal ventilator, pump the filtered smoke to the first-stage separation chamber as the primary air, and rotate downward, and the swirling airflow reaches the reflection plate and reverses to become an upward airflow, At this time, the coarse powder particles contained in the swirling air flow are separated from the air flow and fall into the powder collection box due to centrifugal force and gravity, while the fine powder particles in the upward air flow gather towards the periphery of the swirling air flow;
(4)同时,所述的鼓风机向所述的第二级分离室送入二次风,成为下旋气流,在上升气流外侧同方向旋转,使细粉末加速向外周汇集,并被二次风强制带到所述的集粉盒,上旋气流从所述的出风口排出;(4) At the same time, the blower sends the secondary air into the second-stage separation chamber to form a downward swirling airflow, which rotates in the same direction on the outside of the upward airflow, so that the fine powder is accelerated and collected to the outer periphery, and is blown by the secondary airflow. Forcibly brought to the powder collecting box, the upper swirling air flow is discharged from the air outlet;
(5)判断成型件是否已完成,若已完成,取出成型件,否则继续重复上述步骤(1)~(4)直到成型件加工完成。(5) Determine whether the molded part has been completed, if it has been completed, take out the molded part, otherwise continue to repeat the above steps (1) to (4) until the molded part is processed.
与现有技术相比,本实用新型的有益效果如下:Compared with the prior art, the beneficial effects of the utility model are as follows:
本实用新型通过设置烟尘过滤装置和粉末回收装置,一旦单层截面熔化成型完毕后,就依次启动烟尘过滤装置和粉末回收装置,先将成型缸中的烟尘送至过滤器,除去烟尘的杂质,然后净化后的烟尘送至粉末回收装置,经分离,完成此次的粉末回收,再继续下一单层的熔化成型,重复上述步骤,直至完成成型件的制作。因此,本实用新型解决了烟尘沉积在工件表面,以及粉末回收难的问题,使得制得的成型件精度高、质量优,且粉末回收率高、易回收。The utility model is provided with a smoke filter device and a powder recovery device. Once the single-layer section is melted and formed, the smoke filter device and the powder recovery device are started in sequence, and the smoke in the forming cylinder is sent to the filter first to remove the impurities of the smoke. Then the purified dust is sent to the powder recovery device, and after separation, the powder recovery is completed this time, and then the melting and molding of the next single layer is continued, and the above steps are repeated until the production of the molded part is completed. Therefore, the utility model solves the problems of smoke and dust deposited on the surface of the workpiece and the difficulty of powder recovery, so that the manufactured molded parts have high precision, high quality, high powder recovery rate and easy recovery.
当然,实施本实用新型的任一产品并不一定需要同时达到以上所述的所有优点。Of course, any product implementing the present utility model does not necessarily need to achieve all the above-mentioned advantages at the same time.
附图说明Description of drawings
图1为本实用新型实施例的一种金属选区激光熔化用的烟尘过滤及粉末回收装置的结构示意图;Fig. 1 is a schematic structural view of a smoke filter and powder recovery device for metal selective laser melting according to an embodiment of the present invention;
图2为图1的分离区33的结构示意图;Fig. 2 is a schematic structural view of the separation zone 33 of Fig. 1;
图3为图2的剖视图。FIG. 3 is a cross-sectional view of FIG. 2 .
图中标记:1-成型缸、2-烟尘过滤装置、21-循环管道回路、22-第一离心式通风机、23-冷却装置、231-水箱、232-阻火圈、24-过滤器、3-粉末回收装置、31-吸尘罩、32-第二离心式通风机、33-分离区、331(332)-分离室、34-鼓风机、35-集粉盒、36-管道、37-出风口。Marks in the figure: 1-forming cylinder, 2-smoke filter device, 21-circulation pipeline loop, 22-first centrifugal fan, 23-cooling device, 231-water tank, 232-fire arresting ring, 24-filter, 3-Powder recovery device, 31-Dust suction hood, 32-Second centrifugal fan, 33-Separation area, 331(332)-Separation chamber, 34-Blower, 35-Powder collection box, 36-Pipeline, 37- air outlet.
具体实施方式Detailed ways
为使本实用新型的上述目的、特征和优点能够更加明显易懂,下面结合附图对本实用新型的具体实施方式做详细的说明。In order to make the above purpose, features and advantages of the present utility model more obvious and understandable, the specific implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings.
在下面的描述中阐述了很多具体细节以便于充分理解本实用新型。但是本实用新型能够以很多不同于在此描述的其他方式来实施,本领域技术人员可以在不违背本实用新型内涵的情况下做类似推广,因此本实用新型不受下面公开的具体实施的限制。In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention. However, the utility model can be implemented in many other ways different from those described here, and those skilled in the art can do similar promotions without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below .
在本实用新型中,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本实用新型中的具体含义。In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.
参见图1~3所述,本实用新型实施例的一种金属选区激光熔化用的烟尘过滤及粉末回收装置,包括Referring to Figures 1 to 3, a smoke filter and powder recovery device for metal selective laser melting according to an embodiment of the present invention includes
成型缸1,其为选区激光熔化成型区,提供工件3D成型所需要的各功能部件,如输出模型制造分层信息的计算机控制台、铺粉装置等;Forming cylinder 1, which is a selected laser melting forming area, provides various functional components required for 3D forming of the workpiece, such as a computer console for outputting model manufacturing layered information, powder spreading devices, etc.;
烟尘过滤装置2,其与所述的成型缸1相连,成一闭合的循环管道回路21,以除去烟尘中的杂质,其中,所述的烟尘过滤装置2包括设在管道回路21上的第一离心式通风机22、冷却装置23和过滤器24,第一离心式通风机22提供管道回路中空气的循环动力,以使成型缸1的烟尘经过所述的过滤器24;The soot filter device 2 is connected with the molding cylinder 1 to form a closed circulation pipeline loop 21 to remove impurities in the soot, wherein the soot filter device 2 includes a first centrifugal filter set on the pipeline loop 21 Type ventilator 22, cooling device 23 and filter 24, the first centrifugal ventilator 22 provides the circulation power of the air in the pipeline circuit, so that the soot of forming cylinder 1 passes through described filter 24;
和,粉末回收装置3,其与所述的成型缸1相连,其中,所述的粉末回收装置3包括吸尘罩31、第二离心式通风机32、分离区33、鼓风机34和集粉盒35,所述的吸尘罩31设于所述的成型缸1的上方,并通过管道36与所述的分离区33相连,所述的第二离心式通风机32设于该管道36上,所述的集粉盒35设于所述的分离区33的下端,所述的鼓风机34与所述的分离区33相连;And, a powder recovery device 3, which is connected to the molding cylinder 1, wherein the powder recovery device 3 includes a dust suction hood 31, a second centrifugal fan 32, a separation area 33, a blower 34 and a powder collection box 35. The dust collection hood 31 is arranged above the molding cylinder 1, and is connected to the separation area 33 through a pipeline 36, and the second centrifugal fan 32 is arranged on the pipeline 36, The powder collecting box 35 is arranged at the lower end of the separation area 33, and the blower 34 is connected with the separation area 33;
烟尘经过滤后,所述的第二离心式通风机32经吸尘罩31将其送入分离区33,经分离,粉末汇集于所述的集粉盒35,完成粉末回收。After the dust is filtered, the second centrifugal fan 32 sends it to the separation area 33 through the dust suction hood 31. After separation, the powder is collected in the powder collection box 35 to complete the powder recovery.
本实用新型通过设置烟尘过滤装置2和粉末回收装置3,一旦单层截面熔化成型完毕后,就依次启动烟尘过滤装置2和粉末回收装置3,先将成型缸1中的烟尘送至过滤器24,除去烟尘的杂质,然后净化后的烟尘送至粉末回收装置3,经分离,完成此次的粉末回收,再继续下一单层的熔化成型,重复上述步骤,直至完成成型件的制作。因此,本实用新型在每一次单层截面熔化成型完毕后,解决了烟尘沉积在工件表面,以及粉末回收难的问题,使得制得成型件精度高、质量优,且粉末回收率高、易回收。The utility model is provided with a smoke filter device 2 and a powder recovery device 3. Once the single-layer section is melted and formed, the smoke filter device 2 and the powder recovery device 3 are started in sequence, and the smoke in the forming cylinder 1 is sent to the filter 24 first. , remove the impurities of the soot, and then the purified soot is sent to the powder recovery device 3, after separation, the powder recovery is completed this time, and then the melting and molding of the next single layer is continued, and the above steps are repeated until the production of the molded part is completed. Therefore, the utility model solves the problem of soot deposition on the surface of the workpiece and difficult powder recovery after each single-layer cross-section is melted and formed, so that the formed parts have high precision, excellent quality, high powder recovery rate and easy recovery. .
所述的分离区33用于提供粉末分离的区域,其可以由多级串联、并联或混合设置的分离室构成,其中,在本实用新型的另一实施例中,所述的分离区33包括由两级相连的分离室331(332)构成,其中,所述的吸尘罩31通过管道36与第一级分离室331相连,所述的集粉盒35设于所述的第一级分离室331的下端,所述的鼓风机34与第二级分离室332相连,在所述的第二级分离室332的上端设有出风口37。The separation zone 33 is used to provide a powder separation area, which can be composed of multiple stages of separation chambers arranged in series, parallel or mixed, wherein, in another embodiment of the present utility model, the separation zone 33 includes It is composed of two-stage connected separation chambers 331 (332), wherein the dust suction hood 31 is connected to the first-stage separation chamber 331 through a pipe 36, and the powder collecting box 35 is located in the first-stage separation chamber. At the lower end of the chamber 331, the blower 34 is connected to the second-stage separation chamber 332, and an air outlet 37 is provided at the upper end of the second-stage separation chamber 332.
其中,优选为,所述的分离室331(332)由空心圆柱体经平滑过渡至空心圆锥体构成。Wherein, preferably, the separation chamber 331 ( 332 ) is composed of a hollow cylinder with a smooth transition to a hollow cone.
在实用新型的又一实施例中,所述的吸尘罩31为可拆卸式连接至所述的成型缸1上方进行吸附和离开所述的成型缸1上方区域避免干扰激光束熔化成型。其中可选的可拆卸式连接方式为:螺纹连接。In yet another embodiment of the utility model, the dust suction hood 31 is detachably connected to the top of the molding cylinder 1 to absorb and leave the area above the molding cylinder 1 to avoid interfering with the laser beam melting molding. The optional detachable connection method is: threaded connection.
本实用新型的又一实施例中,所述的第一离心式通风机22设于所述的成型缸1的一侧,所述的过滤器24设于所述的成型缸1的另一侧,所述的冷却装置23设于所述的成型缸1与所述的过滤器24之间。In yet another embodiment of the present utility model, the first centrifugal fan 22 is arranged on one side of the molding cylinder 1, and the filter 24 is arranged on the other side of the molding cylinder 1 , the cooling device 23 is arranged between the molding cylinder 1 and the filter 24 .
本实用新型的一实施例中,所述的冷却装置23包括水箱231,其中,穿过所述的水箱231的管道为螺旋式设计,且水箱231中的水漫过管道,即在烟尘过滤前先冷却烟尘,再将其送至过滤器24吸附杂质,其中,螺旋式设计是为了延长烟尘在管道内的流动时长,提高冷却效果。In an embodiment of the present utility model, the cooling device 23 includes a water tank 231, wherein the pipeline passing through the water tank 231 is designed in a spiral type, and the water in the water tank 231 overflows the pipeline, that is, before the smoke is filtered Cool the smoke and dust first, and then send it to the filter 24 to absorb impurities. The spiral design is to prolong the flow time of the smoke and dust in the pipeline and improve the cooling effect.
优选,连通所述的成型缸1与所述的水箱231的管道由耐高温材料制成。更优选,所述的耐高温材料为无规共聚聚丙烯(PPR),PPR管韧性好、强度高、较高温度下抗蠕变性能好,可以承受成形缸1中排出的较高温度气体。Preferably, the pipe connecting the molding cylinder 1 and the water tank 231 is made of high temperature resistant material. More preferably, the high-temperature-resistant material is random copolymerized polypropylene (PPR). The PPR pipe has good toughness, high strength, and good creep resistance at relatively high temperatures, and can withstand the relatively high-temperature gas discharged from the forming cylinder 1 .
此外,还进一步优选,在近所述的水箱231侧的所述的成型缸1管道上设有阻火圈232,以防止激光熔化过程中的火星溅射进PPR管中造成火灾。In addition, it is further preferred that a fire arresting ring 232 is provided on the pipe of the molding cylinder 1 near the water tank 231 to prevent sparks during the laser melting process from splashing into the PPR pipe and causing a fire.
本实用新型还公开了一种烟尘过滤及粉末回收装置的使用方法,包括以下步骤:The utility model also discloses a method for using the smoke filter and powder recovery device, which includes the following steps:
(1)在选区激光熔化之前,将所述的成型缸和所述的烟尘过滤装置里的气体抽空并充满惰性气体,然后,进行单层截面熔化成型;(1) Before the selective laser melting, the gas in the forming cylinder and the dust filter device is evacuated and filled with an inert gas, and then, a single-layer cross-section is melted and formed;
(2)开启所述的第一离心式通风机,将所述的成型缸里的烟尘依次送入所述的冷却装置和所述的过滤器,过滤烟尘中的杂质;(2) Turn on the first centrifugal fan, send the soot in the forming cylinder into the cooling device and the filter in sequence, and filter the impurities in the soot;
(3)开启所述的第二离心式通风机,将过滤后的烟尘抽至所述的第一级分离室作为一次风,向下旋转,旋转气流下旋到达反射板反转成上升气流,此时,旋转气流中所含的粗粉末颗粒由于离心力和重力的作用,从气流中分离出来掉入所述的集粉盒,而上升气流中的细粉末颗粒向旋转气流的外周汇集;(3) Turn on the second centrifugal ventilator, pump the filtered smoke to the first-stage separation chamber as the primary air, and rotate downward, and the swirling airflow reaches the reflection plate and reverses to become an upward airflow, At this time, the coarse powder particles contained in the swirling air flow are separated from the air flow and fall into the powder collection box due to centrifugal force and gravity, while the fine powder particles in the upward air flow gather towards the periphery of the swirling air flow;
(4)同时,所述的鼓风机向所述的第二级分离室送入二次风,成为下旋气流,在上升气流外侧同方向旋转,使细粉末加速向外周汇集,并被二次风强制带到所述的集粉盒,上旋气流从所述的出风口排出;(4) At the same time, the blower sends the secondary air into the second-stage separation chamber to form a downward swirling airflow, which rotates in the same direction on the outside of the upward airflow, so that the fine powder is accelerated and collected to the outer periphery, and is blown by the secondary airflow. Forcibly brought to the powder collecting box, the upper swirling air flow is discharged from the air outlet;
(5)判断成型件是否已完成,若已完成,取出成型件,否则继续重复上述步骤(1)~(4)直到成型件加工完成。(5) Determine whether the molded part has been completed, if it has been completed, take out the molded part, otherwise continue to repeat the above steps (1) to (4) until the molded part is processed.
综上,本实用新型解决了选区激光熔化成形过程烟尘难以有效处理的难题,实现了烟尘的有效实时处理,保证了零件的高质量成形;本实用新型还提高了金属粉末的回收效率,降低了由人工操作而造成的失误。To sum up, the utility model solves the problem that the smoke and dust in the selective laser melting forming process is difficult to be effectively processed, realizes the effective real-time processing of the smoke and dust, and ensures the high-quality forming of the parts; the utility model also improves the recycling efficiency of the metal powder and reduces the Errors caused by manual operation.
以上公开的本实用新型优选实施例只是用于帮助阐述本实用新型。优选实施例并没有详尽叙述所有的细节,也不限制该实用新型仅为所述的具体实施方式。显然,根据本说明书的内容,可作很多的修改和变化。本说明书选取并具体描述这些实施例,是为了更好地解释本实用新型的原理和实际应用,从而使所属技术领域技术人员能很好地理解和利用本实用新型。本实用新型仅受权利要求书及其全部范围和等效物的限制。The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not exhaust all details, nor do they limit the utility model to the specific implementations described. Obviously, many modifications and variations can be made based on the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that those skilled in the art can well understand and utilize the utility model. The invention is to be limited only by the claims and their full scope and equivalents.
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CN109848416A (en) * | 2019-04-12 | 2019-06-07 | 上海应用技术大学 | A soot filter and powder recovery device for metal selective laser melting |
CN112872366A (en) * | 2021-01-11 | 2021-06-01 | 江苏省特种设备安全监督检验研究院 | Cooling auxiliary device in SLM metal vibration material disk manufacturing process |
CN113263188A (en) * | 2021-04-29 | 2021-08-17 | 西安交通大学 | Smoke discharging and dust removing device and method for additive manufacturing of annular hollow parts |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109848416A (en) * | 2019-04-12 | 2019-06-07 | 上海应用技术大学 | A soot filter and powder recovery device for metal selective laser melting |
CN112872366A (en) * | 2021-01-11 | 2021-06-01 | 江苏省特种设备安全监督检验研究院 | Cooling auxiliary device in SLM metal vibration material disk manufacturing process |
CN113263188A (en) * | 2021-04-29 | 2021-08-17 | 西安交通大学 | Smoke discharging and dust removing device and method for additive manufacturing of annular hollow parts |
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