An anti-adhesion device for screening metal powders

Abstract

The present invention relates to an anti-adhesion device for metal powder screening, comprising: a roller part, the center of the outer wall of the roller part is connected to the output shaft of a driving component, the driving component is arranged on a support frame, and the inside of the roller part is adapted to store metal powder; a heating housing part, the heating housing part is supported on the ground through the support frame, the heating housing part is centered around the roller part, a hopper is fixedly connected to the heating housing part, and the inside of the heating housing part can heat the roller part at a constant temperature. In the present invention, due to the driving force of the driving component on the roller part, the metal powder is thrown out along its inner wall under the centrifugal force and impacts on the heating housing part to be filtered. The metal powder with a large particle size is blocked, and the metal powder with a small particle size is filtered out. During this process, the aggregated metal powder is dispersed by the centrifugal force and contacts the air from multiple angles, improving the anti-adhesion efficiency of the metal powder screening work.

Description

Technical Field

[0001] The present invention relates to the technical field of metal powder screening, and mainly relates to an anti-adhesion device for metal powder screening. Background Art

[0002] Metal powder is used for metal 3D printing work. During the preparation stage of metal powder, it is necessary to screen out appropriate particle sizes for future needs. Metal powder takes a certain amount of time from preparation to screening. During this time, the metal powder to be screened is easily affected by environmental moisture and adheres together, causing obstacles to the screening and drying process.

[0003] There is a prior art metal powder particle size screening device with the patent number CN202010783213.1. It is described in the specification that by adjusting the combined action of ultrasonic vibration and a vibrator, the target powder is screened out. Ultrasonic vibration separates the coarse and fine particles in the metal powder, reducing the probability of fine powder being carried away by coarse powder. At the same time, the high-amplitude vibration of the vibrator can also reduce the blockage of fine powder. The vibration and bounce of the elastic vibration balls can overall improve the powder screening rate and achieve refined screening work for metal powder used in additive manufacturing. However, this device has the following problems:

[0004] 1. Metal powder is in an aggregated state before and after the screening work. Relying solely on the force generated by the vibration force, the force angle is single, resulting in limited anti-adhesion effect during the metal powder screening process.

[0005] 2. The moisture in the metal powder still exists during the vibration separation process, and it may re-adhere in the next storage space and position, making the screening effect of the metal powder unable to be continuously guaranteed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the technical problem of poor metal powder screening methods in the prior art.

[0007] The technical solution adopted by the present invention to solve its technical problem is:

[0008] Provide an anti-adhesion device for metal powder screening, characterized by including:

[0009] A roller part, the center of the outer wall of the roller part is connected to the output shaft of a driving component. The driving component is arranged on a support frame, and the inside of the roller part is suitable for storing metal powder;

[0010] A heating housing part, the heating housing part is supported on the ground by a support frame. The heating housing part is centered around the roller part. A hopper is fixedly connected to the heating housing part, and the inside of the heating housing part can heat the roller part at a constant temperature;

[0011] The discharging part is integrally arranged outside the heating shell part, and the discharging part can exhaust gas and discharge materials, wherein

[0012] The driving component is used to drive the roller part to drive the metal powder to rotate after being heated by the heating shell part. The metal powder can be centrifuged with hot air and filtered by the heating shell part and then fed into the discharging part, so that the metal powder is discharged after being dehumidified and dried.

[0013] Further, the roller part includes a mesh cylinder, a fixed column arranged at the center of the mesh cylinder, and a plurality of partition plates arranged circumferentially at the side end of the fixed column;

[0014] The mesh cylinder can store metal powder;

[0015] The plurality of partition plates can separate the metal powder, wherein

[0016] The mesh cylinder can drive the plurality of partition plates to rotate, so that the metal powder is centrifuged with air and filtered by the heating shell part and then fed into the discharging part.

[0017] Further, the heating shell part includes a cylindrical outer shell supported on the ground by a support frame and a heating cylinder fixedly attached to the inner wall of the cylindrical outer shell;

[0018] An opening is provided on the side wall of the cylindrical outer shell, and the opening communicates with the discharging part, wherein

[0019] The heating cylinder is adapted to heat the metal powder through the mesh cylinder.

[0020] Further, the heating shell part further includes a filter port provided at the side end of the heating cylinder and an arc-shaped filter screen provided at the filter port;

[0021] The mesh holes of the arc-shaped filter screen and the mesh cylinder have the same diameter;

[0022] The arc-shaped filter screen and the heating cylinder form a cylindrical shape, wherein

[0023] The metal powder is centrifuged with air and filtered by the arc-shaped filter screen and then fed into the discharging part.

[0024] Further, the anti-adhesion device for screening metal powder further includes a vibration part;

[0025] The vibration part includes a support plate provided at the lower outer boundary of the arc-shaped filter screen, a triangular inclined plate hinged to the support plate, and a vibration motor provided at the bottom end of the triangular inclined plate;

[0026] The upper end surface of the triangular inclined plate is an inclined surface;

[0027] After being filtered by the arc-shaped filter screen, the metal powder can be placed on the inclined surface of the triangular inclined plate and slide down automatically, where

[0028] Drive the vibration motor, and the vibration motor can vibrate the triangular inclined plate so that the metal powder can be frequently shaken up and dried by the wind.

[0029] Further, the vibration part further includes an elastic support plate arranged at the lower end of the support plate;

[0030] The elastic support plate can abut against the triangular inclined plate upward, where

[0031] When the vibration motor vibrates the triangular inclined plate, the elastic support plate can deform up and down.

[0032] Further, the discharge part includes a triangular cover arranged on the cylindrical shell and a moisture discharge hole arranged at the top of the triangular cover, where

[0033] When the metal powder is dried by the wind, it can discharge moisture through the moisture discharge hole.

[0034] Further, the discharge part further includes a discharge port arranged on the triangular cover, a tipping plate arranged at one end inside the discharge port, and a vertical baffle arranged at the other end inside the discharge port, where

[0035] The metal powder can be spread and rotated and slide along the triangular cover so that the metal powder makes a parabolic motion through the tipping plate and impacts the vertical baffle, so that the metal powder is discharged from the discharge port.

[0036] Further, a plurality of diversion grooves are arranged in a straight line at the upper end of the triangular inclined plate;

[0037] The diversion grooves are hourglass-shaped, where

[0038] The plurality of diversion grooves are suitable for primary diversion of metal powder.

[0039] Further, a plurality of transverse V-shaped rods are arranged coaxially at one end of the plurality of diversion grooves, where

[0040] The plurality of transverse V-shaped rods are suitable for secondary diversion of metal powder.

[0041] The beneficial effect of the present invention is that the driving force of the driving component on the roller portion causes the metal powder to be thrown out along the inner wall by the centrifugal force and hit the heating shell portion to be filtered, so that the metal powder with large particle size is blocked and the metal powder with small particle size is filtered out. During the process, the gathered metal powder is dispersed by the centrifugal force to contact the air at multiple angles, thereby improving the anti-adhesion efficiency of the metal powder screening work; and the heating shell portion can heat the metal powder and the air inside the roller portion, and the roller portion can generate wind force during the rotation process, and the wind force blows the hot air to form hot air to continuously dry the small-particle-size metal powder after hot air filtering. The small-particle-size metal powder can be spread in the discharge portion by the wind to increase the heating area and then exhausted and unloaded, which is beneficial to ensure the continuous screening effect of the metal powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0043] Figure 1 is a stereogram of a preferred embodiment of the present invention;

[0044] Figure 2 is a front view of a preferred embodiment of the present invention;

[0045] Figure 3 is a schematic diagram of the interior of a preferred embodiment of the present invention;

[0046] Figure 4 It is a preferred embodiment of the present invention Figure 3 Enlarged view of point A in the middle;

[0047] Figure 5 It is a top view of the triangular inclined plate of the present invention.

[0048] In the figure:

[0049] 1. Roller part; 11. Net cylinder; 12. Fixed column; 13. Partition plate;

[0050] 2. Driving component; 21. Motor; 22. Driving wheel; 23. Driving ring; 24. Belt;

[0051] 3. Support frame;

[0052] 4. Heating shell portion; 41. Cylindrical shell; 42. Heating cylinder; 43. Opening; 44. Filter port; 45. Curved filter screen;

[0053] 5. Discharge part; 51. Triangular cover; 52. Moisture discharge hole; 53. Discharge port; 54. Rocker; 55. Vertical baffle;

[0054] 6. Vibration unit; 61. Support plate;

[0055] 62. Triangular inclined plate; 621. Flow dividing groove; 622. Transverse V-shaped rod; 63. Vibration motor; 64. Elastic support plate;

[0056] 7. Hopper. Detailed implementation manner

[0057] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0058] As Figures 1-5 shown, the present invention provides an anti-adhesion device for metal powder screening, including:

[0059] Roller part 1, the center of the outer wall of the roller part 1 is connected to the output shaft of the driving component 2, the driving component 2 is arranged on the support frame 3, the driving component 2 includes a motor 21, a driving wheel 22 that can be driven by the motor 21, a driving ring 23 connected to the roller part 1, and a belt 24 connected between the driving ring 23 and the driving wheel 22, and the inside of the roller part 1 is suitable for storing metal powder;

[0060] Heating housing part 4, the heating housing part 4 is supported on the ground by the support frame 3, the heating housing part 4 is centered around the roller part 1, a hopper 7 is fixedly connected to the heating housing part 4, and the integrally extended pipe at the lower end of the hopper 7 penetrates into the roller part 1, and the inside of the heating housing part 4 can heat the roller part 1 at a constant temperature;

[0061] Discharge part 5, the discharge part 5 is integrally arranged outside the heating housing part 4, and the discharge part 5 can exhaust gas and discharge materials, wherein

[0062] The driving component 2 is used to drive the roller part 1 to drive the metal powder to rotate after being heated by the heating housing part 4. The metal powder can be centrifuged with hot air and then filtered through the heating housing part 4 and fed into the discharge part 5, so that the metal powder is discharged after being dehumidified and dried. Specifically, in the present invention, the driving force of the driving component 2 on the roller part 1 causes the metal powder to be thrown out along its inner wall by the centrifugal force and hit the heating housing part 4 to be filtered. The metal powder with large particle size is blocked, and the metal powder with small particle size is filtered out. During this process, the aggregated metal powder is dispersed by the centrifugal force and contacts the air at multiple angles, improving the anti-adhesion efficiency of the metal powder screening work; and the heating housing part 4 can heat the metal powder and the air inside the roller part 1, and the rotating roller part 1 can generate wind power. The wind power blows the hot air to form hot air to continuously dry the filtered small-particle-size metal powder. The small-particle-size metal powder can be spread by the wind in the discharge part 5 to increase the heating area and then exhaust gas and discharge materials, which is beneficial to ensuring the continuous screening effect of the metal powder.

[0063] Optionally, the roller part 1 includes a mesh cylinder 11. A protective door that can be opened and closed is provided on the mesh cylinder 11, which is conducive to the entry of the metal powder to be sieved. A fixed column 12 disposed at the center of the mesh cylinder 11 and a plurality of partition plates 13 circumferentially disposed at the side end of the fixed column 12;

[0064] The mesh cylinder 11 can store metal powder;

[0065] A plurality of the partition plates 13 can separate the metal powder, wherein

[0066] The mesh cylinder 11 can drive a plurality of the partition plates 13 to rotate, so that the metal powder is centrifuged with the wind and fed into the discharge part 5 after being filtered by the heating housing part 4. Specifically, one end of a plurality of partition plates 13 does not contact the inner side wall of the mesh cylinder 11. During its rotation, the local metal powder close to the side wall in the mesh cylinder 11 is first centrifugally sieved during the rotation process, and the metal powder placed in the gaps between a plurality of partition plates 13 is separated and then sieved during the rotation process, so that the metal powder will not accumulate at one end of the mesh cylinder 11 during the sieving process, keeping the rotation state of the mesh cylinder 11 in a balanced state. The two end planes of the fixed column 12 and the two end planes of a plurality of partition plates 13 fit the two end planes inside the mesh cylinder 11, so that the sieving work in the balanced state will not be disturbed.

[0067] Optionally, the heating housing part 4 includes a cylindrical outer shell 41 supported on the ground by a support frame 3. A discharge door is provided on the cylindrical outer shell 41 and the heating cylinder 42. When the protective door rotates parallel to the mesh cylinder 11, the discharge door and the protective door are opened in sequence to discharge the metal powder with a large particle size. A heating cylinder 42 fixedly attached to the inner wall of the cylindrical outer shell 41;

[0068] An opening 43 is provided on the side wall of the cylindrical outer shell 41, and the opening 43 communicates with the discharge part 5, wherein

[0069] The heating cylinder 42 is adapted to heat the metal powder through the mesh cylinder 11. Specifically, the cylindrical outer shell 41 is made of heat-insulating material, and the temperature heated by the heating cylinder 42 will not easily dissipate. The heating cylinder 42 and the mesh cylinder 11 are co-centered, so that the heating effect obtained by the mesh cylinder 11 is uniform. After the opening 43 communicates with the discharge part 5, a good guiding effect is exerted on the hot air overflowing from the opening 43, making the continuous action of the hot air on the discharged metal powder with a small particle size stable.

[0070] Optionally, the heating housing part 4 further includes a filter port 44 provided at the side end of the heating cylinder 42 and an arc-shaped filter screen 45 provided at the filter port 44;

[0071] The arc-shaped filter screen 45 has the same diameter as the mesh holes of the mesh cylinder 11;

[0072] The arc-shaped filter screen 45 and the heating cylinder 42 form a cylindrical shape, wherein

[0073] After the metal powder is filtered by the arc-shaped filter screen 45 along with the wind and fed into the discharge part 5. Specifically, the filter opening 44 is located between the discharge part 5 and the opening 43. The arc-shaped filter screen 45 and the mesh cylinder 11 share the same center. The flow trajectory of the hot air and the trajectory of the small-particle-size metal powder after screening are the same trajectory, and they can fully influence each other, making the heating intensity of the small-particle-size metal powder stronger. The several mesh holes of the arc-shaped filter screen 45 and the several mesh holes of the mesh cylinder 11 are coaxial to prevent the filtering work of the small-particle-size metal powder from being blocked.

[0074] Optionally, the anti-adhesion device for screening metal powder further includes a vibration part 6;

[0075] The vibration part 6 includes a support plate 61 arranged at the lower outer boundary of the arc-shaped filter screen 45, a triangular inclined plate 62 hinged to the support plate 61, and a vibration motor 63 arranged at the bottom end of the triangular inclined plate 62;

[0076] The upper end surface of the triangular inclined plate 62 is an inclined surface;

[0077] After the metal powder is filtered by the arc-shaped filter screen 45, it can slide down automatically on the inclined surface of the triangular inclined plate 62. Among them,

[0078] When the vibration motor 63 is driven, the vibration motor 63 can vibrate the triangular inclined plate 62 to make the metal powder vibrate frequently and then be dried by the wind. Specifically, the end of the inclined surface of the triangular inclined plate 62 close to the support plate 61 is higher than the end far from the support plate 61, making the sliding operation of the small-particle-size metal powder smooth and convenient. The vibration motor 63 can continuously vibrate the triangular inclined plate 62. The small-particle-size metal powder sliding down through the triangular inclined plate 62 is repeatedly screened up in the vertical direction, increasing the drying angle and drying surface in the vertical direction and reducing the generation of drying dead corners.

[0079] Optionally, the vibration part 6 further includes an elastic support plate 64 arranged at the lower end of the support plate 61;

[0080] The elastic support plate 64 can abut against the triangular inclined plate 62 from below. Among them,

[0081] When the vibration motor 63 vibrates the triangular inclined plate 62, the elastic support plate 64 can deform up and down. Specifically, the elastic support plate 64 has both rigidity and flexibility, can maintain the support for the angle of the triangular inclined plate 62, and can maintain the support process for the triangular inclined plate 62 during the force deformation process, so that the screening amplitude of the triangular inclined plate 62 for the small-particle-size metal powder is kept within a certain range.

[0082] Optionally, the discharge portion 5 includes a triangular cover 51 disposed on the cylindrical housing 41 and a moisture discharge hole 52 disposed on the top of the triangular cover 51, wherein

[0083] When the metal powder is dried by wind, it can be dehumidified through the dehumidification holes 52. Specifically, the triangular cover 51 is made of heat-conducting metal material. As hot air is generated, it is conducted to a certain temperature. The small-particle metal powder flows along the inner wall of the triangular cover 51 and is continued to be spread and heated. The moisture generated in the process is discharged from the dehumidification holes 52.

[0084] Optionally, the discharge portion 5 further includes a discharge port 53 disposed in the triangular cover 51, a seesaw 54 disposed at one end of the discharge port 53, and a vertical baffle 55 disposed at the other end of the discharge port 53, wherein

[0085] The metal powder can be spread and rotated and slide along the triangular cover 51, so that the metal powder can make a parabolic motion along the seesaw 54 and then hit the vertical baffle 55, so that the metal powder can be discharged from the discharge port 53. Specifically, the small-particle metal powder that has undergone various drying and heating methods will hit the vertical baffle 55 in a parabolic trajectory when sliding through the seesaw 54, so that the small-particle metal powder will be further lifted in the process to avoid accumulation and moisture absorption. The vertical baffle 55 can play a protective role, so that the small-particle metal powder will not cross the discharge port 53 and cause the discharge work to fail.

[0086] Optionally, the upper end of the triangular inclined plate 62 is provided with a plurality of diverter grooves 621 in a straight line shape; the front and rear ends of the plurality of diverter grooves 621 are in a through form;

[0087] The diversion channel 621 is hourglass-shaped.

[0088] Several of the diverter grooves 621 are suitable for the first-level diversion of metal powder. Specifically, the diverter grooves 621 allow the small-particle metal powder passing through the triangular inclined plate 62 to be further diverted in the horizontal multiple heat conduction process. The flow process of the metal powder in the diverter grooves 621 has a process from diffusion to aggregation, and then aggregation to diffusion. The angle of the metal powder is squeezed and changed in this process, so that the metal powder at each angle is exchanged and heated.

[0089] Optionally, a plurality of transverse V-bars 622 are coaxially arranged at one end of the plurality of diverter slots 621, wherein

[0090] Several of the transverse V-rods 622 are suitable for secondary diversion of metal powder. Specifically, the transverse V-rods 622 are placed at one end of the diversion groove 621, and the sharp corners of the transverse V-rods 622 are oriented toward the path that small-particle metal powder must pass through, so that the small-particle metal powder can be diverted for the second time, thereby improving the degree of protection and allowing the block metal powder that is poorly dried to be broken up and continue to perform the drying work.

[0091] Inspired by the above-described ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An anti-adhesion device for screening metal powder, characterized in that, Comprising: A roller part (1), the center of the outer wall of the roller part (1) is connected to the output shaft of a driving component (2), the driving component (2) is arranged on a support frame (3), and the inside of the roller part (1) is suitable for storing metal powder; A heating housing part (4), the heating housing part (4) is supported on the ground by the support frame (3), the heating housing part (4) is centered around the roller part (1), a hopper (7) is fixedly connected to the heating housing part (4), and the inside of the heating housing part (4) can heat the roller part (1) at a constant temperature; A discharging part (5), the discharging part (5) is integrally arranged outside the heating housing part (4), and the discharging part (5) can exhaust gas and discharge materials, wherein The driving component (2) is used to drive the roller part (1) to drive the metal powder to rotate after being heated by the heating housing part (4), and the metal powder can be centrifuged with hot air and filtered by the heating housing part (4) and then fed into the discharging part (5) so that the metal powder is discharged after being dehumidified and dried; The roller part (1) includes a mesh cylinder (11), a fixed column (12) arranged at the center of the mesh cylinder (11), and a plurality of partition plates (13) arranged circumferentially at the side end of the fixed column (12); The mesh cylinder (11) can store metal powder; The plurality of partition plates (13) can separate the metal powder, wherein The mesh cylinder (11) can drive the plurality of partition plates (13) to rotate so that the metal powder is centrifuged with air and filtered by the heating housing part (4) and then fed into the discharging part (5); The heating housing part (4) includes a cylindrical outer shell (41) supported on the ground by the support frame (3) and a heating cylinder (42) fixedly attached to the inner wall of the cylindrical outer shell (41); An opening (43) is arranged on the side wall of the cylindrical outer shell (41), and the opening (43) communicates with the discharging part (5), wherein The heating cylinder (42) is suitable for heating the metal powder through the mesh cylinder (11).

2. The anti - adhesion device for screening metal powder according to claim 1, characterized in that The heating housing part (4) further includes a filtering port (44) arranged at the side end of the heating cylinder (42) and an arc - shaped filter screen (45) arranged at the filtering port (44); The mesh holes of the arc - shaped filter screen (45) and the mesh cylinder (11) have the same diameter; The arc - shaped filter screen (45) and the heating cylinder (42) form a cylindrical shape, wherein The metal powder is centrifuged with air and filtered by the arc - shaped filter screen (45) and then fed into the discharging part (5).

3. The anti - adhesion device for screening metal powder according to claim 2, characterized in that The anti - adhesion device for screening metal powder further includes a vibrating part (6); The vibrating part (6) includes a support plate (61) arranged at the outer lower end boundary of the arc - shaped filter screen (45), a triangular inclined plate (62) hinged to the support plate (61), and a vibration motor (63) arranged at the bottom end of the triangular inclined plate (62); The upper end surface of the triangular inclined plate (62) is an inclined surface; After being filtered by the arc-shaped filter screen (45), the metal powder can slide down automatically along the inclined surface of the triangular inclined plate (62), where The vibration motor (63) is driven, and the vibration motor (63) can vibrate the triangular inclined plate (62) so that the metal powder is frequently lifted and dried by the wind.

4. The anti-adhesion device for screening metal powder according to claim 3, wherein The vibration part (6) further includes an elastic support plate (64) arranged at the lower end of the support plate (61); The elastic support plate (64) can abut against the triangular inclined plate (62) upward, where When the vibration motor (63) vibrates the triangular inclined plate (62), the elastic support plate (64) can deform up and down.

5. The anti-adhesion device for screening metal powder according to claim 4, wherein The discharge part (5) includes a triangular cover (51) arranged on the cylindrical outer shell (41) and a moisture discharge hole (52) arranged at the top of the triangular cover (51), where When the metal powder is dried by the wind, moisture can be discharged through the moisture discharge hole (52).

6. The anti-adhesion device for screening metal powder according to claim 5, wherein The discharge part (5) further includes a discharge port (53) arranged on the triangular cover (51), a rocker (54) arranged at one end inside the discharge port (53), and a vertical baffle (55) arranged at the other end inside the discharge port (53), where The metal powder can be spread and rotated along the triangular cover (51) so that the metal powder makes a parabolic motion through the rocker (54) and then impacts the vertical baffle (55), so that the metal powder is discharged from the discharge port (53).

7. The anti-adhesion device for screening metal powder according to claim 6, wherein A plurality of diversion grooves (621) are arranged in a straight line at the upper end of the triangular inclined plate (62); The diversion grooves (621) are in the shape of an hourglass, where The plurality of diversion grooves (621) are suitable for primary diversion of the metal powder.

8. The anti-adhesion device for screening metal powder according to claim 7, wherein A plurality of transverse V-shaped rods (622) are arranged coaxially at one end of the plurality of diversion grooves (621), where The plurality of transverse V-shaped rods (622) are suitable for secondary diversion of the metal powder.

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