An atomization powder screening device for iron-based nanocrystalline alloy

Abstract

The present invention discloses an atomization powder screening device for an iron-based nanocrystalline alloy, which relates to the field of screening devices and includes a screening box body. A powder guiding channel is installed at the top of the screening box body, and a vibrating table is installed at the bottom of the screening box body. The driving device is installed outside the screening box body, and the top of the blocking plate slides under the bottom of the powder guiding channel. The screening mechanism includes a filter plate. After the driving device drives the blocking plate to move directly below the powder guiding channel, it drives the filter plate to rotate outside the screening box body; for this atomization powder screening device for an iron-based nanocrystalline alloy, the driving device synchronously drives the blocking plate and the filter plate to work successively, so that the powder remaining on the filter plate that cannot be screened out will be poured out of the screening box body. At this time, the powder particles that are likely to block the mesh holes on the filter plate are shaken off the filter plate under the vibration of the vibrating table, ensuring the screening efficiency of the mesh.

Description

Technical Field

[0001] The present invention relates to screening device technology, and in particular to an atomization powder making and screening device for iron-based nanocrystalline alloys. Background Art

[0002] Iron-based nanocrystalline alloy is a kind of amorphous material formed by a rapid solidification process of an alloy mainly composed of iron element and added with a small amount of Nb, Cu, Si, and B elements. After heat treatment, this amorphous material can obtain nanometer-sized diameters, which are diffusely distributed on the amorphous matrix. The atomization powder making method is a powder preparation method in which a rapidly moving fluid (atomization medium) impacts or otherwise breaks a metal or alloy liquid into fine droplets, and then condenses into solid powder.

[0003] In the Chinese utility model patent with the publication number of CN209918288U, an efficient water atomized iron powder screening device is disclosed. In this efficient water atomized iron powder screening device, the second motor is turned on through an external controller. While the second motor is rotating, it drives the oscillation disk to rotate, so as to meet the requirement of circular vibration of the first screen and the second screen. Because it uses one motor to drive the vibration of two screens, while ensuring the normal vibration of the device, the device is also reduced. However, when the screen is screening powder, for some powder particles with relatively low sphericity, their fluidity during vibration is relatively lower than that of powder with high sphericity. If their particle size is large and they cannot pass through the screen holes, they are more likely to block the screen holes of the screen for a short time or continuously, hindering the screening of other powders. At this time, it is generally necessary to manually stop the machine, take out the screen, invert the screen surface, and vibrate or strike the edge of the screen frame to shake off the powder blocked on the screen holes, reducing the efficiency of screening powder. Summary of the Invention

[0004] The purpose of the present invention is to provide an atomization powder making and screening device for iron-based nanocrystalline alloys to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An atomization powder making and screening device for iron-based nanocrystalline alloys, including a screening box body. A powder guiding channel is installed at the top of the screening box body, and a vibration table is installed at the bottom of the screening box body. The driving device is installed outside the screening box body. The top of the blocking plate slides under the bottom of the powder guiding channel. The screening mechanism includes a filter plate. After the driving device drives the blocking plate to move to directly below the powder guiding channel, it drives the filter plate to rotate to the outside of the screening box body.

[0006] Furthermore, the screening mechanism is installed on one side of the screening box, and at least one screening mechanism is provided. The screening mechanism also includes two side plates symmetrically installed on both sides of the screening box. There are two filter plates, and the opposite sides of the two side plates are fixedly connected to one side of the two filter plates respectively. The opposite ends of the two filter plates are provided with chamfers and abut against each other.

[0007] Furthermore, the driving device includes a motor, a first transmission mechanism, a second transmission mechanism and two sheave components, the sheave components include a driven sheave and an active dial that drives the driven sheave to rotate intermittently, one side of the two driven sheaves is respectively connected to one side of the first transmission mechanism and the second transmission mechanism, the two active dials are fixedly connected to one end of the motor output shaft, and one side of the motor is fixedly connected to one side of the screening box through a mounting frame.

[0008] Furthermore, the two driven sheaves are coaxially arranged, and the inner walls thereof are rotatably connected to a same rotating shaft, and one end of the rotating shaft is rotatably connected to one side of the screening box.

[0009] Furthermore, one side of the driven sheave is fixedly connected to a transmission wheel, and one side of the other driven sheave is fixedly connected to a sector gear, and the round pins on the two active dials have an angle relative to the axis of the active dial.

[0010] Furthermore, the screening mechanism also includes two rotating rods, and the rotation of the two rotating rods drives the two side plates to rotate toward the outside of the screening box. The transmission wheel is connected to one end of each rotating rod on each screening mechanism through the same transmission belt. One end of the sector gear is meshed with a U-shaped tooth plate, one end of the U-shaped tooth plate passes through the screening box and is slidably connected to the inner wall of the screening box, one end of the U-shaped tooth plate is fixedly connected to one side of the blocking plate, and the blocking plate is slidably installed in the screening box through a guide rod.

[0011] Furthermore, the filter plate has a rotation angle of 90-180°.

[0012] Compared with the prior art, the atomization powder making and screening device for iron-based nanocrystalline alloy provided by the present invention has the following beneficial effects:

[0013] 1. The atomization powder screening device of the iron-based nanocrystalline alloy drives the blocking plate to move and the filter plate to open through the driving device, so that the powder remaining on the filter plate that cannot be screened out will be dumped out of the screening box. At this time, the powder particles on the filter plate that are easy to block the screen holes are shaken out of the filter plate under the vibration of the vibration table, thereby ensuring the screening efficiency of the screen.

[0014] 2. The atomization powder screening device for the iron-based nanocrystalline alloy drives one sheave component to rotate first through the same motor, thereby driving the plugging plate to move to directly below the powder guiding channel to plug the powder guiding channel. Then, the motor rotates to drive the other sheave component to rotate, causing the filter plate to rotate outside the screening box, realizing that the driving device synchronously drives the plugging plate and the filter plate to work successively. Moreover, the driving device has a simple structure, low cost, stable operation, and high reliability, further ensuring the screening efficiency of the sieve mesh. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0016] Figure 1 Front view of the overall structure provided by the embodiment of the present invention;

[0017] Figure 2 Side view of the overall structure provided by the embodiment of the present invention;

[0018] Figure 3 Longitudinal sectional view of the overall structure provided by the embodiment of the present invention;

[0019] Figure 4 Provided by the embodiment of the present invention Figure 1 Enlarged view of A in

[0020] Figure 5 Schematic diagram of the structure of the sheave component provided by the embodiment of the present invention.

[0021] Explanation of the reference numerals in the drawings:

[0022] 1. Screening box; 2. Powder guiding channel; 3. Vibration table; 4. Driving device; 41. Motor; 42. First transmission mechanism; 421. Transmission wheel; 422. Transmission belt; 43. Second transmission mechanism; 431. Sector gear; 432. U-shaped tooth plate; 44. Sheave component; 441. Driven sheave; 442. Driving dial; 5. Plugging plate; 6. Screening mechanism; 61. Filter plate; 62. Side plate; 63. Rotating rod. Detailed Description of the Embodiments

[0023] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will further introduce the present invention in detail in conjunction with the drawings.

[0024] Embodiment 1:

[0025] Please refer to Figures 1-3, an atomization powder screening device for iron-based nanocrystalline alloy, comprising a screening box body 1. The screening box body 1 is used to carry out the screening process of iron-based nanocrystalline alloy powder in a closed environment, avoiding the powder splashing out of the box body during the screening process. A number of discharge ports are provided on the screening box body 1 to facilitate the discharge of the separated powder after screening. A powder guiding channel 2 is installed at the top of the screening box body 1, and the powder guiding channel 2 is connected to an atomization device. After being atomized by the atomization device, the iron-based nanocrystalline alloy is introduced into the screening box body 1 through the powder guiding channel 2. A vibration table 3 is installed at the bottom of the screening box body 1, and a vibration motor or an ultrasonic generator is installed on the vibration table 3 to make the screening box body 1 vibrate at a high frequency and screen through the sieve mesh on the filter plate 61 inside it;

[0026] A driving device 4 is installed outside the screening box body 1. The driving device 4 includes an electric telescopic rod and a stepping motor. The top of the blocking plate 5 slides at the bottom of the powder guiding channel 2. The blocking plate 5 is slidably installed in the screening box body 1 through a guide rod. One end of the output shaft of the electric telescopic rod is fixedly connected to one side of the blocking plate 5. The electric telescopic rod drives the blocking plate 5 to move, so that the blocking plate 5 can be pushed to directly below the powder guiding channel 2 to block the powder guiding channel 2 and prevent the powder from falling into the screening box body 1. At least one screening mechanism 6 is provided. When multiple screening mechanisms 6 are provided, iron-based nanocrystalline alloy powders with different mesh numbers can be classified and screened by setting sieve meshes with different apertures. The screening mechanism 6 includes a filter plate 61, and a sieve mesh is installed on the filter plate 61. The screening mechanism 6 further includes two side plates 62 symmetrically and rotatably installed on both sides of the screening box body 1. The side plates 62 are in sealed contact with the screening box body 1, and the side plates 62 are rotatably connected to the surface of the screening box body 1 through hinges. The number of filter plates 61 is two, and one side of each of the two side plates 62 is fixedly connected to one side of one of the two filter plates 61. The filter plate 61 can be inserted into the side plate 62 through a limiting member. When the filter plate 61 rotates to the outside of the screening box body 1, the filter plate 61 can be quickly replaced. The limiting member can be a protrusion provided on the side plate 62, and a groove adapted to the protrusion is provided on the filter plate 61. Chamfers are provided at the opposite ends of the two filter plates 61 and are in contact with each other. When the two filter plates 61 rotate to be in contact and flush with each other, they are closely attached and the gap is extremely small, so that when screening the iron-based nanocrystalline alloy powder, the powder larger than the aperture of the sieve mesh on the current filter plate 61 will not fall through the gap. In addition, when the filter plate 61 rotates towards the outside of the screening box body 1, the chamfer setting makes the two filter plates 61 not be stressed when they contact each other during rotation;

[0027] The screening mechanism 6 further includes two rotating rods 63. The surface of the rotating rod 63 is fixedly connected to one of the base rotating shafts in the hinge. When the rotating rod 63 rotates, it drives the side plate 62 fixedly connected to the base to rotate. The rotation of the two rotating rods 63 drives the two side plates 62 to rotate outward to the outside of the screening box 1. One end of each rotating rod 63 on each screening mechanism 6 is drivingly connected to the transmission wheel 421 through the same transmission belt 422. The rotating rod 63 is rotatably connected to the surface of the screening box 1 through a rotating seat. Driven transmission wheels are sleeved on the rotating rods 63, and an adjusting transmission wheel is installed on one side of one of the driven transmission wheels in each screening mechanism 6. The transmission belt 422 changes the transmission direction of the driven transmission wheel through the adjusting transmission wheel, so that when the two driven transmission wheels in the same screening mechanism 6 are transmitting, their rotation directions are opposite. The transmission wheel 421 is fixedly connected to one end of the motor output shaft. When the motor rotates, it drives the transmission wheel 421 to rotate. The rotation of the transmission wheel 421 drives the transmission belt 422 to rotate. The rotation of the transmission belt 422 drives the rotating rods 63 to rotate, so that the side plate 62 rotates and drives the filter plate 61 on one side to rotate outside the screening box 1. First, the electric telescopic rod drives the plugging plate 5 to move directly below the powder guiding channel 2 to block the powder guiding channel 2 and suspend the feeding. Then, the motor drives the filter plate 61 to rotate so that the filter plate 61 rotates outside the screening box 1, and the rotation angle of the filter plate 61 is between 90° and 180°. The powder remaining on the filter plate 61 that cannot be screened out will be poured out of the screening box 1. At this time, the powder particles that are likely to block the screen holes on the filter plate 61 are shaken off the filter plate under the vibration of the vibration table. After the stepping motor rotates in reverse to reset the filter plate 61, the electric telescopic rod drives the plugging plate 5 to reset, and the powder guiding channel 2 continues to drop the powder for screening work.

[0028] Embodiment 2:

[0029] Please refer to Figures 1-5 , an atomization powder screening device for iron-based nanocrystalline alloy, including a screening box 1. The screening box 1 is used for screening iron-based nanocrystalline alloy powder in a closed environment to prevent the powder from splashing out of the box during the screening process. A powder guiding channel 2 is installed at the top of the screening box 1. The powder guiding channel 2 is connected to an atomization device. After the iron-based nanocrystalline alloy is atomized by the atomization device, it is introduced into the screening box 1 through the powder guiding channel 2. A vibration table 3 is installed at the bottom of the screening box 1. The vibration table 3 is equipped with a vibration motor or an ultrasonic generator to make the screening box 1 vibrate at a high frequency and screen through the sieve on the filter plate 61 inside;

[0030] The driving device 4 is installed outside the screening box body 1. The driving device 4 includes a motor 41, a first transmission mechanism 42, a second transmission mechanism 43, and two sheave components 44. The sheave component 44 includes a driven sheave 441 and a driving dial 442 that drives the driven sheave 441 to rotate intermittently. One side of each of the two driven sheaves 441 is respectively connected to one side of the first transmission mechanism 42 and the second transmission mechanism 43. Both driving dials 442 are fixedly connected to one end of the output shaft of the motor 41. The motor 41 is a stepper motor. One side of the motor 41 is fixedly connected to one side of the screening box body 1 through a mounting bracket. The two driven sheaves 441 are coaxially arranged, and a same rotating shaft is rotatably connected to the inner walls thereof. One end of the rotating shaft is rotatably connected to one side of the screening box body 1. A transmission wheel 421 is fixedly connected to one side of one of the driven sheaves 441, and a sector gear 431 is fixedly connected to one side of the other driven sheave 441. The round pins on the two driving dials 442 have an angle relative to the axis of the driving dials 442. When one of the driving dials 442 rotates to drive the sector gear 431 to rotate, the other driving dial 442 is at this time in the process of turning to the other driven sheave 441. One end of the sector gear 431 is meshed with a U-shaped toothed plate 432. One end of the U-shaped toothed plate 432 penetrates through the screening box body 1 and is slidably connected to the inner wall of the screening box body 1. One end of the U-shaped toothed plate 432 is fixedly connected to one side of the blocking plate 5. The top of the blocking plate 5 slides at the bottom of the powder guiding channel 2. The blocking plate 5 is slidably installed in the screening box body 1 through a guiding rod. After the sector gear 431 drives the U-shaped toothed plate 432 to move and pushes the blocking plate 5 to block the powder guiding channel 2, the transmission wheel 421 rotates again;

[0031] At least one screening mechanism 6 is provided. When multiple screening mechanisms 6 are provided, iron-based nanocrystalline alloy powders with different mesh numbers can be classified and screened by setting sieves with different pore diameters. The screening mechanism 6 includes a filter plate 61, and a sieve is installed on the filter plate 61. The screening mechanism 6 further includes two side plates 62 that are symmetrically and rotatably installed on both sides of the screening box body 1. The side plates 62 are in sealed contact with the screening box body 1. The side plates 62 are rotatably connected to the surface of the screening box body 1 through hinges. The number of filter plates 61 is two. One side of each of the two side plates 62 is respectively fixedly connected to one side of the two filter plates 61. Chamfers are provided at opposite ends of the two filter plates 61 and are in contact with each other. When the two filter plates 61 rotate to be in contact and flush with each other, they are closely attached and the gap is extremely small, so that when screening the iron-based nanocrystalline alloy powder, the powder larger than the pore diameter of the sieve on the current filter plate 61 will not fall from the gap. In addition, when the filter plate 61 rotates outward to the outside of the screening box body 1, the chamfer setting enables the two filter plates 61 not to be stressed when they contact each other during rotation;

[0032] The screening mechanism 6 also includes two rotating rods 63, the surface of the rotating rod 63 is fixedly connected to one of the base rotating shafts in the hinge, and when the rotating rod 63 rotates, it drives the side plates 62 fixedly connected to the base to rotate, and the two rotating rods 63 rotate to drive the two side plates 62 to rotate toward the outside of the screening box 1. The transmission wheel 421 is connected to one end of each rotating rod 63 on each screening mechanism 6 through the same transmission belt 422. The rotating rod 63 is rotatably connected to the surface of the screening box 1 through a rotating seat. A driven transmission wheel is sleeved on the rotating rod 63, and an adjusting transmission wheel is installed on one side of one of the driven transmission wheels in each screening mechanism 6. The transmission belt 422 changes the transmission direction of the driven transmission wheel by adjusting the transmission wheel, so that the two driven transmission wheels in the same screening mechanism 6 rotate in opposite directions when transmitting. The motor 41 rotates to first drive one of the sheave components 44 to rotate, thereby driving the blocking plate 5 to move to the bottom of the powder guide channel 2, blocking the powder guide channel 2, causing it to suspend feeding, and preventing powder from falling into the screening box 1. Then the motor 41 rotates to drive the other sheave component 44 to rotate, so that the filter plate 61 rotates to the outside of the screening box 1, and the rotation angle of the filter plate 61 is between 90-180°. The rotation angle can be determined by setting the number of notches of the sheave component 44, or the size of the transmission wheels on the transmission wheel 421 and each rotating rod 63. The powder that cannot be screened out of the filter plate 61 will be dumped out of the screening box 1, and at this time, the powder particles on the filter plate 61 that are easy to clog the screen holes will be shaken out of the filter plate under the vibration of the vibration table.

[0033] Working principle: During use, after the iron-based nanocrystalline alloy is atomized into a powder, it is introduced into the screening box body 1 through the powder guiding channel 2 for screening. After the powder is screened by the sieve mesh on the screening mechanism 6, the qualified powder falls onto the next layer of the screening mechanism 6 or exits through the discharge port at the bottom of the box body. When the screening efficiency decreases due to blockage of the sieve mesh on the filter plate 61, start the stepping motor 41 to rotate, driving the two driving dials 442 to rotate synchronously. One of the driving dials 442 first drives the driven sprocket 441 on its side to rotate, causing the sector gear 431 to rotate. The rotation of the sector gear 431 drives the U-shaped tooth plate 432 to move horizontally, and the U-shaped tooth plate 432 pushes the plugging plate 5 to move, finally covering the bottom of the powder guiding channel 2 with the plugging plate 5 to temporarily prevent the powder guiding channel 2 from feeding materials. Then, the other driving dial 442 rotates to the side of the driven sprocket 441 on its side and continues to rotate to drive the transmission wheel 421 to rotate. The rotation of the transmission wheel 421 drives each rotating rod 63 to rotate through the transmission belt 422, and the two rotating rods 63 in the same screening mechanism 6 rotate in opposite directions, causing the two side plates 62 to rotate towards both sides of the screening box body 1. The filter plate 61 follows the side plates 62 to rotate and rotates outside the screening box body 1, and stop the stepping motor 41 to rotate and make it stay for a specified time, so that the powder remaining on the filter plate 61 that cannot be screened out will be poured out of the screening box body 1. And at this time, the powder particles that are likely to block the sieve mesh holes on the filter plate 61 are shaken off the filter plate under the vibration of the vibration table;

[0034] Then start the stepping motor 41 to rotate in the reverse direction, so that the filter plate 61 first returns to its original position, and then the plugging plate 5 moves to the side of the powder guiding channel 2, enabling the powder guiding channel 2 to continue feeding materials for the screening of the iron-based nanocrystalline alloy powder.

[0035] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An atomized powder-making and screening device for an iron-based nanocrystalline alloy, comprising a screening box (1), a powder guide channel (2) being installed on the top of the screening box (1), and a vibration table (3) being installed on the bottom of the screening box (1), characterized in that: A driving device (4), wherein the driving device (4) is installed outside the screening box (1); A sealing plate (5) having a top portion sliding on the bottom of the powder guide channel (2); A screening mechanism (6), wherein the screening mechanism (6) includes a filter plate (61), and after the driving device (4) drives the blocking plate (5) to move to the position directly below the powder guide channel (2), the filter plate (61) is driven to rotate to the outside of the screening box (1); The driving device (4) includes a motor (41), a first transmission mechanism (42), a second transmission mechanism (43) and two sheave components (44), the sheave component (44) includes a driven sheave (441) and an active dial (442) for driving the driven sheave (441) to intermittently rotate, one side of the two driven sheaves (441) is respectively connected to one side of the first transmission mechanism (42) and one side of the second transmission mechanism (43), the two active dials (442) are fixedly connected to one end of the output shaft of the motor (41), and one side of the motor (41) is fixedly connected to one side of the screening box (1) via a mounting frame; One side of one of the driven sheaves (441) is fixedly connected to a transmission wheel (421), and one side of the other driven sheave (441) is fixedly connected to a sector gear (431). The round pins on the two active dials (442) have an angle relative to the axis of the active dial (442). The screening mechanism (6) further comprises two rotating rods (63), and the two rotating rods (63) rotate to drive the two side plates (62) to rotate toward the outside of the screening box (1). The transmission wheel (421) is connected to one end of each rotating rod (63) on each screening mechanism (6) through the same transmission belt (422). One end of the sector gear (431) is meshedly connected with a U-shaped tooth plate (432). One end of the U-shaped tooth plate (432) passes through the screening box (1) and is slidably connected to the inner wall of the screening box (1). One end of the U-shaped tooth plate (432) is fixedly connected to one side of the blocking plate (5), and the blocking plate (5) is slidably installed in the screening box (1) through a guide rod.

2. The atomization powder screening device for an iron-based nanocrystalline alloy according to claim 1, characterized in that, The screening mechanism (6) is installed on one side of the screening box (1). At least one screening mechanism (6) is provided. The screening mechanism (6) further comprises two side plates (62) symmetrically mounted on both sides of the screening box (1). There are two filter plates (61). Opposite sides of the two side plates (62) are fixedly connected to one side of the two filter plates (61), respectively. Opposite ends of the two filter plates (61) are provided with chamfers and abut against each other.

3. The atomization powder-making screening device for an iron-based nanocrystalline alloy according to claim 2, wherein The two driven sheaves (441) are coaxially arranged, and their inner walls are rotatably connected to the same rotating shaft, one end of which is rotatably connected to one side of the screening box (1).

4. An atomization powder-making screening device for an iron-based nanocrystalline alloy according to claim 1, characterized in that, The filter plate (61) has a rotation angle of 90-180°.

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