A filtering device and filtering assembly for 3D printing alloy powder

Abstract

The application discloses a kind of filtering device and filtering assembly of 3D printing alloy powder, it is related to metal additive powder processing technical field, including self-processing component, self-processing component includes box, two material pipes are fixedly connected on the box symmetrically, rotatingly connected with four through holes one in annular array being set up on the inner side wall of box in the box, one through hole two is set up in the center position of disc, each be provided with one filter screen in the four through holes one of disc, the inner wall bottom of box is fixedly connected with servo motor one, and the outside of servo motor one is equipped with protection pipe;The operation of self-processing component is through dynamic switching filter screen and active screen cleaning mechanism, from the two aspects of preventing blockage and quickly clearing blockage, the efficiency bottleneck of traditional filtering device is broken through, the filtering quality of alloy powder is guaranteed, and the production efficiency is significantly improved through continuous operation and automatic screen cleaning, and it has practicality and innovation.

Description

Technical Field

[0001] This invention relates to the field of powder processing technology for metal additive manufacturing, specifically to a filtration device and filtration assembly for 3D printed alloy powder. Background Technology

[0002] 3D printing alloy powder filtration devices are designed to precisely remove impurities, particulate contaminants, oxide scale, clumps, and missized particles, ensuring high purity, good flowability, and uniform particle size of the processed powder, thus laying the foundation for high-quality printed parts. However, in practical applications, alloy powder is highly susceptible to oxidation, moisture absorption, or mechanical compression during storage or transportation, forming hard lumps and granules. These agglomerated substances are hard and conventional screen filtration devices are unable to effectively disperse them, instead becoming stuck in the screen channels, forming stubborn physical blockages. Once the screen is blocked, the effective filtration area is significantly reduced, or even the sieving function is completely lost.

[0003] Meanwhile, if the alloy powder remaining on the top of the screen during filtration is not removed in time, it will gradually accumulate and compact, forming a dense powder layer. This powder layer not only blocks the screen channels, hindering powder passage, but also forces the filtration unit to frequently stop for cleaning. This vicious cycle of screen clogging and shutdown for cleaning greatly reduces the filtration efficiency of the alloy powder, seriously affecting production progress and powder processing quality.

[0004] To address this, a filtration device and filtration assembly for 3D printed alloy powder are proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a filtration device and filtration assembly for 3D printed alloy powder, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a filtration device and filtration assembly for 3D printed alloy powder, comprising a self-processing assembly, the self-processing assembly comprising a housing, two material tubes symmetrically and fixedly connected to the housing, a turntable rotatably connected to the inner side wall of the housing, four through holes I arranged in a circular array on the turntable, a through hole II at the center of the turntable, a filter screen disposed in each of the four through holes I of the turntable, a servo motor I fixedly connected to the bottom of the inner wall of the housing, a protective tube fixedly connected to the bottom of the inner wall of the housing, the protective tube being sleeved outside the servo motor I, the servo motor I being divided into a fixed end and an output shaft, the output shaft of the servo motor I facing upwards, an extension shaft coaxially and fixedly connected to the output shaft end of the servo motor I, and an inverted tube fixedly connected to the top end of the extension shaft of the servo motor I.

[0007] Furthermore, the turntable has four sets of rotating slots arranged in a circular array, with two slots per set. Each slot contains a rotatable telescopic tube, which is divided into a rotating tube and a telescopic shaft. The telescopic shaft of each telescopic tube faces the center of the filter screen on the corresponding side. Each telescopic tube contains a spring, with its two ends fixedly connected to the rotating tube and the telescopic shaft of the telescopic tube, respectively. A shaped wedge is fixedly connected to the end of the telescopic shaft of each telescopic tube. The rotating tube of the telescopic tube closest to the center of the turntable extends into the through-hole of the turntable. Each telescopic tube is located... Each of the two through holes in the turntable has a block fixedly connected to one end. Each block has a long gear fixedly connected to the end away from the corresponding telescopic tube. Two L-shaped toothed plates are symmetrically fixedly connected to the inner wall of the protective tube. Four sets of support plates are fixedly connected in a ring array on the inner wall of the two through holes in the turntable. Two support plates form a group. The two support plates in each group are symmetrically arranged on both sides of the adjacent blocks. Guide rods are slidably connected to the support plates. A push plate is fixedly connected to the end of the guide rod near the adjacent block. A spring is sleeved on the guide rod. A vibrator is fixedly connected to the inner wall of the box.

[0008] Furthermore, an external discharge pipe is fixedly connected to the bottom of the box, and a filter material collection device is connected to the end of the external discharge pipe away from the box. The two material pipes are coaxially arranged and eccentrically arranged on the box. The diameter of the two material pipes corresponds to the diameter of the filter screen. It should be noted that the material pipe located at the top is the upper material pipe, and the material pipe located at the bottom is the lower material pipe.

[0009] Furthermore, servo motor one is located at the center of the turntable, and the extension shaft of servo motor one extends through the through hole two of the turntable to the top of the turntable. The protective tube and the inverted tube are both set at the same center as the turntable. The bottom end of the inverted tube is fixedly connected to the turntable, and the top end of the protective tube is rotatably connected to the turntable. Servo motor one is electrically connected to a remote control.

[0010] Furthermore, in each group, the groove on the side closest to the center of the turntable connects to the through hole one and through hole two of the turntable. In each group, the groove on the side furthest from the center of the turntable is opened on the side wall of the through hole one of the turntable. The two grooves in each group are horizontally corresponding, and the two grooves in each group are located at the two ends of the adjacent filter screen. The shape of the irregular wedge is set to be a combination of a cylinder and a hexagonal prism. One end of the cylindrical irregular wedge is fixedly connected to the telescopic shaft end of the telescopic tube. One end of the cylindrical irregular wedge is slidably connected to the groove and fits tightly. The outer surface of the filter screen has a hexagonal groove corresponding to the hexagonal prism of the irregular wedge. One end of the hexagonal prism of the irregular wedge is inserted into and adapted to the hexagonal groove of the filter screen. The rotating tube of the telescopic tube is limited and rotatedly connected to the groove wall of the groove. The two ends of the spring two are fixedly connected to the push plate and the side of the support plate that are close to each other, respectively.

[0011] Furthermore, the end of the long gear away from the block meshes with the top of the L-shaped toothed plate, and the number of teeth on the L-shaped toothed plate is half the number of teeth on the long gear. The two L-shaped toothed plates are symmetrically arranged on both sides of the filtration area. The vibration generating end of the vibrator is in contact with the top surface of the filter screen. The vibrator is electrically connected to a remote control.

[0012] A 3D printing alloy powder filter assembly is provided on a housing. The filter assembly includes a second servo motor, which is fixedly connected to the inner wall of the top feed tube. The second servo motor has a fixed end and an output shaft. Multiple grid plates are fixedly connected in a ring array on the output shaft of the second servo motor. Multiple grid plates are fixedly connected in a ring array on the inner wall of the top feed tube. A second vibrator is installed on the inner wall of the bottom feed tube. Two disassembly slots are symmetrically opened on the filter screen. An inspection door is rotatably connected to the top of the housing.

[0013] Furthermore, the fixed end of the servo motor 2 is fixedly connected to the inner wall of the material tube located at the top via a connecting rod. A protective cover is fitted on the servo motor 2. The bottom surface of the grid plate 2 is in contact with the top surface of the filter screen. Both the grid plate 1 and the grid plate 2 are set as straight plates with multiple straight grooves, and the straight grooves on the grid plate 1 and the grid plate 2 are staggered.

[0014] Furthermore, the second vibrator can disturb the airflow, causing the airflow to guide the alloy powder downwards.

[0015] Furthermore, the disassembly slot connects to the hexagonal groove of the filter screen.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] With a four-set filter switching progressive design, when one set of filters becomes clogged, it can be immediately switched to another filter to continue filtering, avoiding filtration interruption or reduction in effective area due to clogging of a single filter, ensuring uninterrupted operation of the filtration process, avoiding production stoppage due to shutdown for cleaning the filters, and significantly increasing the amount of alloy powder processed per unit time.

[0018] By combining flipping and vibration to clean the screen, gravity discharge can quickly remove large clumps and accumulated residual powder, while vibration can further loosen the fine particles stuck in the micropores, ensuring that the filter screen channels are unobstructed. The continuously unobstructed filter screen channels can ensure that the alloy powder is always filtered with uniform particle size and flow rate.

[0019] During the operation of the filter assembly, the crushing action of the first and second grid plates directly applies mechanical pressure to the hard lumps and agglomerates in the alloy powder, forcibly breaking them into single particles or small-diameter agglomerates. This overcomes the limitation of traditional screens that cannot handle agglomerates by simply sieving, making the subsequent filtration process smoother and optimizing the alloy powder processing flow.

[0020] By allowing users to replace filters with different pore sizes or replace them when they are severely worn, the system enables rapid filter replacement, adapting to diverse alloy powder processing needs. This solves the problems of time-consuming filter replacement and cumbersome disassembly and assembly in traditional devices, reduces downtime for maintenance, and accelerates alloy powder processing efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall device of the present invention;

[0022] Figure 2 This is a cross-sectional schematic diagram of the box body, material pipe, and other structures of the present invention;

[0023] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle;

[0025] Figure 5 For the present invention Figure 3 Enlarged view of point C in the middle;

[0026] Figure 6 This is a cross-sectional schematic diagram of the turntable, filter screen, and other structures of the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged view of point D;

[0028] Figure 8 This is a schematic diagram showing the structural positions of the servo motor 2, grille plate 1, and grille plate 2 of the present invention;

[0029] Figure 9 For the present invention Figure 8 Enlarged view of point E in the middle;

[0030] Figure 10 This is a schematic diagram showing the positions of the turntable, filter screen, disassembly groove, and other structures of the present invention;

[0031] Figure 11 This is a schematic diagram illustrating the assembly of the telescopic tube, irregular wedge, filter screen, and other structures of the present invention.

[0032] Figure 12 This is an exploded view of the structure of the filter screen, block, telescopic tube, etc. of the present invention.

[0033] Figure 13 For the present invention Figure 12 Enlarged diagram at point F;

[0034] Figure 14 For the present invention Figure 12Enlarged diagram of point G in the middle.

[0035] In the picture:

[0036] 11. Housing; 12. Feed pipe; 13. Turntable; 14. Filter screen; 15. Servo motor one; 16. Protective tube; 17. Inverted tube; 18. Rotary groove; 19. Telescopic tube; 110. Spring one; 111. Irregular wedge block; 112. Block; 113. Long rod gear; 114. L-shaped toothed plate; 115. Support plate; 116. Guide rod; 117. Push plate; 118. Spring two; 119. Vibrator one;

[0037] 21. Servo motor 2; 22. Grille 1; 23. Grille 2; 24. Vibrator 2; 25. Disassembly slot; 26. Inspection door. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0039] The embodiments provided by this invention:

[0040] Example 1:

[0041] Please see Figures 1 to 14As shown, a filtration device and filtration assembly for 3D printed alloy powder includes a self-processing component. The self-processing component includes a housing 11, with two feed pipes 12 symmetrically fixedly connected to the housing 11. A turntable 13 is rotatably connected to the inner wall of the housing 11. The turntable 13 has four through holes arranged in a circular array, and a second through hole is opened at the center of the turntable 13. Each of the four through holes 14 of the turntable 13 is equipped with a filter screen 14. A servo motor 15 is fixedly connected to the bottom of the inner wall of the housing 11, and a protective tube 16 is fixedly connected to the bottom of the inner wall of the housing 11. 16 are mounted outside the servo motor 15. The servo motor 15 consists of a fixed end and an output shaft. The output shaft of the servo motor 15 faces upward. An extension shaft is coaxially and fixedly connected to the output shaft end of the servo motor 15. An inverted tube 17 is fixedly connected to the top of the extension shaft of the servo motor 15. The turntable 13 has four sets of rotating slots 18 arranged in a circular array. Two rotating slots 18 form a group. Each rotating slot 18 is rotatably connected to a telescopic tube 19. Each telescopic tube 19 consists of a rotating tube and a telescopic shaft. The telescopic shaft of each telescopic tube 19 faces the corresponding side of the filter screen 14. In the direction of the center, each telescopic tube 19 is equipped with a spring 110 inside. The two ends of the spring 110 are fixedly connected to the rotating tube and the telescopic shaft of the telescopic tube 19, respectively. Each telescopic tube 19 has a special-shaped wedge 111 fixedly connected to the telescopic shaft end. The rotating tube of the telescopic tube 19 on the side closer to the center of the turntable 13 extends into the through hole 2 of the turntable 13. Each end of the telescopic tube 19 located in the through hole 2 of the turntable 13 is fixedly connected to a square block 112. Each square block 112 has a long rod gear 11 fixedly connected to the end away from the corresponding telescopic tube 19. 3. Two L-shaped toothed plates 114 are symmetrically fixedly connected to the inner wall of the protective tube 16. Four sets of support plates 115 are fixedly connected in a ring array on the inner wall of the through hole of the turntable 13. Two support plates 115 form a group. The two support plates 115 in each group are symmetrically arranged on both sides of the adjacent block 112. A guide rod 116 is slidably connected to the support plate 115. A push plate 117 is fixedly connected to one end of the guide rod 116 near the adjacent block 112. A spring 118 is sleeved on the guide rod 116. A vibrator 119 is fixedly connected to the inner wall of the box 11.

[0042] Reference Figure 2 As shown: The bottom of the box 11 is fixedly connected to an external drain pipe. The end of the external drain pipe away from the box 11 is connected to a filter material collection device. The user can discharge the filter material inside the box 11 by cooperating with the external drain pipe and the filter material collection device.

[0043] Where: Reference Figure 2 , Figure 3As shown, the two material pipes 12 are coaxially arranged and eccentrically arranged on the housing 11. The diameter of the two material pipes 12 corresponds to the diameter of the filter screen 14. It should be noted that the material pipe 12 located at the top is the upper material pipe and the material pipe 12 located at the bottom is the lower material pipe. The user can pour alloy powder into the material pipe 12 located at the top. The alloy powder is filtered by the filter screen 14 and discharged through the material pipe 12 located at the bottom.

[0044] It should be noted that the filter screen 14 located between the two feed pipes 12 is hereinafter referred to as the filtration area.

[0045] Reference Figure 3 As shown, servo motor 15 is located at the center of turntable 13. The extension shaft of servo motor 15 extends through the through hole 2 of turntable 13 to the top of turntable 13. Protective tube 16 and inverted tube 17 are both set concentrically with turntable 13. The bottom end of inverted tube 17 is fixedly connected to turntable 13, and the top end of protective tube 16 is rotatably connected to turntable 13. The function of protective tube 16 is to prevent alloy powder inside housing 11 from interfering with the normal operation of servo motor 15. The function of inverted tube 17 is to enable the operation of servo motor 15 to drive turntable 13 to rotate. It should be added that: Servo motor 15 is electrically connected to a remote control. Under the control of the remote control, servo motor 15 has the following motion characteristics: each time servo motor 15 runs, its output shaft rotates one-quarter of a revolution. Specifically, the output shaft of servo motor 15 drives turntable 13 to rotate one-quarter of a revolution. That is, one run of servo motor 15 can drive four filters 14 to rotate and switch positions inside the housing 11. That is, adjacent filters 14 switch and progressively enter the filtration area between the two feed pipes 12.

[0046] It should be added that: (refer to) Figure 3 As shown, and with Figure 3 For position reference, servo motor 15 drives turntable 13 to rotate clockwise.

[0047] Where: Reference Figure 3 , Figure 4 , Figure 11 , Figure 12 and Figure 14As shown, in each group, the groove 18 on the side closest to the center of the turntable 13 connects to the through hole one and through hole two of the turntable 13. In each group, the groove 18 on the side furthest from the center of the turntable 13 is formed on the side wall of the through hole one of the turntable 13. The two grooves 18 in each group are horizontally aligned and located at the two ends of the adjacent filter screen 14. The irregular wedge 111 is shaped as a combination of a cylinder and a hexagonal prism. One end of the cylindrical part of the irregular wedge 111 is fixed to the telescopic shaft end of the telescopic tube 19. The cylindrical end of the irregular wedge 111 is slidably connected to and tightly fitted with the rotating groove 18. The outer surface of the filter screen 14 is provided with a hexagonal groove corresponding to the hexagonal prism of the irregular wedge 111. One end of the hexagonal prism of the irregular wedge 111 is inserted and adapted to the hexagonal groove of the filter screen 14. The function of the cylindrical end of the irregular wedge 111 is to prevent alloy powder inside the box 11 from entering the rotating groove 18. The function of the hexagonal prism end of the irregular wedge 111 is to enable the rotation of the telescopic tube 19 to drive the filter screen 14 to rotate synchronously.

[0048] Where: Reference Figure 4 As shown, the rotating tube of the telescopic tube 19 is rotatably connected to the wall of the rotating groove 18, so that the telescopic tube 19 can only rotate on its own inside the rotating groove 18.

[0049] Where: Reference Figure 7 , Figure 11 , Figure 13 As shown, the two ends of spring 118 are fixedly connected to the push plate 117 and the side of the support plate 115 that are close to each other. It should be added that: under the elastic extension of the two springs 118, the two inverted tubes 17 are always in contact with and attached to the block 112, and the four corners of the square of the block 112 are set as rounded corners.

[0050] It should be added that: (refer to) Figure 7 , Figure 11 , Figure 13 As shown, in conjunction with the supplement of spring 118 and block 112, when block 112 rotates, it pushes push plates 117 to both sides, causing the push plates 117 on both sides to move away from the corresponding guide rods 116. At the same time, it elastically compresses the spring 118 on the corresponding side. During this process, the rounded corners of block 112 are designed to facilitate the rotation of block 112. When block 112 rotates 90 degrees, that is, when the straight part of block 112 contacts the push plates 117 on both sides, the springs 118 on both sides elastically extend, and the push plates 117 squeeze and limit block 112. At this time, the straight part of block 112 is designed to prevent block 112 from rotating due to external influences when it is not needed.

[0051] Where: Reference Figure 4 , Figure 7 , Figure 11As shown, the end of the long gear 113 furthest from the block 112 meshes with the top of the L-shaped toothed plate 114, and the number of teeth on the L-shaped toothed plate 114 is half the number of teeth on the long gear 113. Specifically, the meshing movement of the long gear 113 and the L-shaped toothed plate 114 allows the long gear 113 to rotate 180 degrees. As mentioned above, this means the filter screen 14 rotates 180 degrees. The two L-shaped toothed plates 114 are symmetrically arranged on both sides of the filtration area. As mentioned above, when the four filter screens 14 switch positions, the filter screen 14 originally located in the filtration area switches to the opposite position. When the filter is in the adjacent position, it will be flipped 180 degrees. When the filter 14, which was originally in the adjacent position, is switched to the filtration area, it will also be flipped 180 degrees. The function is as follows: the material filtered by the filter 14 in the original filtration area always stays on the top surface of the filter 14. As the filter 14, which was originally in the filtration area, is switched to the non-filtration area, it is flipped 180 degrees, so that the top surface of the filter 14 is flipped to the bottom surface. Then, the filtered material is poured into the bottom of the inner wall of the box 11 under the action of gravity. The filter 14 that has switched to the filtration area is in the state of having completed the processing of the filtered material.

[0052] Where: Reference Figure 2 As shown, the vibrator 119 is a known technology. The vibration generating end of the vibrator 119 is in contact with the top surface of the filter screen 14. The vibrator 119 is electrically connected to a remote control. Specifically, the vibrator 119 can vibrate the filter screen 14, which was originally located in the filtration area, and switch it to the non-filtration area. This causes the filter screen 14 to be vibrated while rotating 180 degrees, which causes the filtered substances on the filter screen 14 to detach from the filter screen 14.

[0053] In summary, during the operation of the self-processing component, alloy powder is poured into the top feed pipe 12. The alloy powder is filtered by the filter screen 14 and discharged from the bottom feed pipe 12. During this process, the user starts the servo motor 15 via remote control, causing the output shaft of the servo motor 15 to drive the four filter screens 14 to switch periodically. This causes the filter screens 14 that actually act in the filtration area to switch periodically. The filter screens 14 that are switched out of the filtration area are rotated 180 degrees, so that the filtered material is poured into the bottom of the inner wall of the box 11 under the action of gravity. At the same time, the filter screens 14 are rotated and vibrated by the vibrator 119, which makes the filtered material on the filter screens 14 better detach from the filter screens 14. As the switching of the filter screens 14 continues, the filter screens 14 that act in the filtration area can always remain in a state where they are not blocked or disturbed by the filtered material.

[0054] The operation of self-processing components can achieve the following beneficial effects:

[0055] With the design of four sets of filter screens 14 switching progressively, when one set of filter screens 14 is blocked by a blockage, it can be immediately switched to other filter screens 14 to continue filtering, avoiding filtration interruption or reduction of effective area caused by blockage of a single filter screen 14, ensuring uninterrupted operation of the filtration process, avoiding production stagnation caused by shutdown for screen cleaning, and significantly improving the amount of alloy powder processed per unit time.

[0056] By combining flipping and vibration to clean the screen, gravity discharge can quickly remove large clumps and accumulated residual powder, while vibration can further loosen the fine particles stuck in the micropores, ensuring that the pores of the filter screen 14 are unobstructed. The continuously unobstructed pores of the filter screen 14 can ensure that the alloy powder is always filtered with a uniform particle size and flow rate.

[0057] In summary, the operation of the self-processing component breaks through the efficiency bottleneck of traditional filtration devices by dynamically switching filters and actively cleaning them, thus preventing clogging and quickly clearing blockages. It not only ensures the filtration quality of alloy powder, but also significantly improves production efficiency through continuous operation and automated cleaning, combining practicality and innovation.

[0058] Example 2:

[0059] Reference Figures 1 to 4 as well as Figure 5 , Figures 9 to 12 As shown, a filter assembly is provided on the housing 11. The filter assembly includes a servo motor 21, which is fixedly connected to the inner wall of the feed tube 12 located at the top. The servo motor 21 is divided into a fixed end and an output shaft. Multiple grid plates 22 are fixedly connected in a ring array on the output shaft of the servo motor 21. Multiple grid plates 23 are fixedly connected in a ring array on the inner wall of the feed tube 12 located at the top. A vibrator 24 is installed on the inner wall of the feed tube 12 located at the bottom. Two disassembly slots 25 are symmetrically opened on the filter screen 14. An inspection door 26 is rotatably connected to the top of the housing 11.

[0060] Where: Reference Figure 5 As shown, the fixed end of the servo motor 21 is fixedly connected to the inner wall of the material tube 12 located at the top via a connecting rod. A protective cover is fitted on the servo motor 21 to prevent the alloy powder inside the material tube 12 from interfering with the operation of the servo motor 21.

[0061] Where: Reference Figure 5 , Figure 9As shown, the bottom surface of the second grid plate 23 is in contact with the top surface of the filter screen 14. Both the first grid plate 22 and the second grid plate 23 are set as straight plates with multiple straight grooves. The straight grooves on the first grid plate 22 and the second grid plate 23 are staggered. Specifically, the first grid plate 22 can pass through the second grid plate 23 while being rotated by the output shaft of the second servo motor 21. This causes the alloy powder clumps on the filter screen 14 to be pushed and rotated synchronously by the first grid plate 22. When the clumps rotate to contact the second grid plate 23, the first grid plate 22 passes through the second grid plate 23 and breaks up the clumps, so that the broken clumps are restored to powder.

[0062] Where: Reference Figure 3 As shown, the vibrator 24 is a known technology. The function of the vibrator 24 is to drive the corresponding filter screen 14 to vibrate through vibration, so that the alloy powder passes through the filter screen 14.

[0063] Where: Reference Figure 4 as well as Figures 10 to 12 As shown, the disassembly groove 25 is connected to the hexagonal groove of the filter screen 14. The function of the disassembly groove 25 is as follows: when the hexagonal prism of the irregular wedge 111 is inserted into the hexagonal groove of the filter screen 14, the user can use a tool such as a screwdriver or a pry tool to insert into the disassembly groove 25 and push the irregular wedge 111 away from the center of the filter screen 14, so that the irregular wedge 111 pushes the telescopic tube 19 to move in the direction of the telescopic axis of the tube. At the same time, the elastic compression spring 110 is compressed. When the hexagonal prism of the irregular wedge 111 is pushed to completely disengage from the hexagonal groove of the filter screen 14, that is, at this time the filter screen 14 is no longer limited by the irregular wedges 111 on both sides. At this time, the user can take out the filter screen 14. After the filter screen 14 is taken out, the user no longer pushes the irregular wedge 111. Under the elastic extension of the spring 110, the irregular wedge 111 is reset.

[0064] When it is necessary to install the filter screen 14, the user uses a tool such as a screwdriver or a pry tool to push the irregular wedge 111 to the elastic compression spring 110. Then, the filter screen 14 is placed so that the hexagonal slot is aligned with the hexagonal prism of the housing 11. After this is completed, the irregular wedge 111 is no longer pushed. At this time, under the elastic extension of the spring 110, the spring 110 pushes the irregular wedge 111 to move towards the filter screen 14, so that the hexagonal prism of the irregular wedge 111 is inserted into the hexagonal slot of the filter screen 14. At this time, the installation of the filter screen 14 is completed.

[0065] In summary, the function of the disassembly slot 25 is to facilitate the user to replace the filter screen 14 with different filter pore sizes or to replace it when the filter screen 14 is severely worn.

[0066] The function of the inspection door 26 is that the user can rotate the inspection door 26 to expose the inside of the box 11, making it convenient for the user to perform operations such as replacing 14 inside the box 11.

[0067] In summary, during the operation of the filter assembly, the crushing action of the first grid plate 22 and the second grid plate 23 directly applies mechanical pressure to the hard lumps and agglomerates in the alloy powder, forcibly breaking them into single particles or small-diameter agglomerates. This overcomes the limitation of traditional screens that cannot handle agglomerates by simply sieving, making the subsequent filtration process smoother and optimizing the alloy powder processing flow.

[0068] Furthermore, by allowing users to replace the filter screen 14 with different pore sizes or replace it when it is severely worn, the filter screen 14 can be quickly replaced, adapting to diverse alloy powder processing needs. This solves the problems of time-consuming replacement and cumbersome disassembly and assembly of the filter screen 14 in traditional devices, reduces downtime maintenance time, and accelerates the efficiency of alloy powder processing.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A filtration device for 3D printed alloy powder, characterized in that: The system includes a self-processing component, which includes a housing (11). Two material pipes (12) are symmetrically fixedly connected to the housing (11). A turntable (13) is rotatably connected to the inner wall of the housing (11). The turntable (13) has four through holes in a circular array. A through hole (2) is opened at the center of the turntable (13). Each of the four through holes (14) of the turntable (13) is equipped with a filter screen (14). A servo motor (15) is fixedly connected to the bottom of the inner wall of the housing (11). A protective tube (16) is fixedly connected to the bottom of the inner wall of the housing (11). The protective tube (16) is sleeved on the outside of the servo motor (15). The servo motor (15) is divided into a fixed end and an output shaft. The output shaft of the servo motor (15) faces upward. An extension shaft is coaxially fixedly connected to the output shaft end of the servo motor (15). A buckle tube (17) is fixedly connected to the top end of the extension shaft of the servo motor (15). Four sets of rotating slots (18) are arranged in a ring array on the turntable (13). Two rotating slots (18) form a group. Each rotating slot (18) is rotatably connected to a telescopic tube (19). Each telescopic tube (19) is divided into a rotating tube and a telescopic shaft. The telescopic shaft of each telescopic tube (19) faces the center of the filter screen (14) on the corresponding side. Each telescopic tube (19) is equipped with a spring (110). The two ends of the spring (110) are fixedly connected to the rotating tube and the telescopic shaft of the telescopic tube (19) respectively. A special-shaped wedge (111) is fixedly connected to the end of the telescopic shaft of each telescopic tube (19). The rotating tube of the telescopic tube (19) on one side of the center of the turntable (13) extends into the through hole two of the turntable (13). Each telescopic tube (19) is fixedly connected to a block (112) at one end of the through hole two of the turntable (13). Each block (112) is fixedly connected to a long rod gear (113) at the end away from the corresponding telescopic tube (19). Two L-shaped toothed plates (114) are symmetrically fixedly connected to the inner wall of the protective tube (16). Four sets of support plates (115) are fixedly connected in a ring array on the inner wall of the through hole two of the turntable (13). Two support plates (115) form a group. The two support plates (115) in each group are symmetrically arranged on both sides of the adjacent block (112). Guide rods (114) are slidably connected to the support plates (115). 6) A push plate (117) is fixedly connected to one end of the guide rod (116) near the adjacent block (112). A spring (118) is sleeved on the guide rod (116). A vibrator (119) is fixedly connected to the inner wall of the box (11). An external drain pipe is fixedly connected to the bottom of the box (11). A filter material collection device is connected to the end of the external drain pipe away from the box (11). Two material pipes (12) are coaxially arranged and eccentrically arranged on the box (11). The diameter of the two material pipes (12) corresponds to the diameter of the filter screen (14). The material pipe (12) at the top is set as the upper material pipe, and the material pipe (12) at the bottom is set as the lower material pipe. The servo motor (15) is located at the center of the turntable (13).The extension shaft of servo motor 1 (15) extends through the through hole 2 of turntable (13) to the top of turntable (13). The protective tube (16) and the buckle tube (17) are both set with the same center as turntable (13). The bottom end of the buckle tube (17) is fixedly connected to turntable (13), and the top end of the protective tube (16) is rotatably connected to turntable (13). Servo motor 1 (15) is electrically connected to a remote control. The rotating groove (18) on the side of turntable (13) closest to the center of each group is connected to turntable (13). 3) Through holes one and through holes two, in each group, the rotating groove (18) on the side away from the center of the turntable (13) is opened on the side wall of through hole one of the turntable (13). The two rotating grooves (18) in each group are horizontally corresponding, and the two rotating grooves (18) in each group are located at the two ends of the adjacent filter screen (14). The shape of the irregular wedge (111) is set to be composed of a cylinder and a hexagonal prism. One end of the cylinder of the irregular wedge (111) is fixed to the telescopic shaft end of the telescopic tube (19). The cylindrical part of the irregular wedge (111) is slidably connected to and tightly fitted with the rotating groove (18). The outer surface of the filter screen (14) is provided with a hexagonal groove corresponding to the hexagonal prism of the irregular wedge (111). One end of the hexagonal prism of the irregular wedge (111) is inserted into and adapted to the hexagonal groove of the filter screen (14). The rotating tube of the telescopic tube (19) is limited and rotatably connected to the groove wall of the rotating groove (18). The two ends of the second spring (118) are respectively connected to the push plate (117) and the support plate (118). 115) The two L-shaped gears (113) are fixedly connected on the adjacent side. The end of the long gear (113) away from the block (112) meshes with the top of the L-shaped toothed plate (114), and the number of teeth of the L-shaped toothed plate (114) is half the number of teeth of the long gear (113). The two L-shaped toothed plates (114) are symmetrically arranged on both sides of the filter area. The vibration generating end of the vibrator (119) is in contact with the top surface of the filter screen (14). The vibrator (119) is electrically connected to a remote control.

2. A filter assembly for 3D printed alloy powder, characterized in that: The 3D printing alloy powder filtration device described in claim 1 is provided on the housing (11). The filtration assembly includes a servo motor 2 (21). The servo motor 2 (21) is fixedly connected to the inner wall of the material tube (12) located at the top. The servo motor 2 (21) is divided into a fixed end and an output shaft. Multiple grid plates 1 (22) are fixedly connected in a ring array on the output shaft of the servo motor 2 (21). Multiple grid plates 2 (23) are fixedly connected in a ring array on the inner wall of the material tube (12) located at the top. A vibrator 2 (24) is installed on the inner wall of the material tube (12) located at the bottom. Two disassembly slots (25) are symmetrically opened on the filter screen (14). An inspection door (26) is rotatably connected to the top of the housing (11).

3. The filtration assembly for 3D printed alloy powder according to claim 2, characterized in that: The fixed end of the servo motor 2 (21) is fixedly connected to the inner wall of the material tube (12) located at the top through a connecting rod. The servo motor 2 (21) is fitted with a protective cover. The bottom surface of the grid plate 2 (23) is in contact with the top surface of the filter screen (14). Both the grid plate 1 (22) and the grid plate 2 (23) are set as straight plates with multiple straight grooves, and the straight grooves on the grid plate 1 (22) and the grid plate 2 (23) are staggered.

4. The filtration assembly for 3D printed alloy powder according to claim 3, characterized in that: Vibrator 2 (24) can disturb the airflow, causing the airflow to guide the alloy powder to move downwards.

5. The filtration device and filtration assembly for 3D printed alloy powder according to claim 4, characterized in that: The disassembly slot (25) connects to the hexagonal groove of the filter screen (14).

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