Multistage screening and magnetic separation device for iron powder

Abstract

The utility model relates to the technical field of iron powder screening, in particular to an iron powder multi-stage screening magnetic separation device. Comprising a box body, the upper end of the box body fixedly communicates with an inlet pipe, a plurality of screening units are arranged in the box body in the vertical direction, the particle sizes of iron powder screened by the multiple screening units are sequentially reduced from top to bottom, magnetic separation assemblies are arranged on one side, above the screening units, of the box body, and material collecting assemblies are arranged on the outer side, below the magnetic separation assemblies, of the box body; the lower end of the box body fixedly communicates with a discharging pipe, and cleaning assemblies are arranged on one sides, above the screening units, of the box body. According to the device, the multiple screening units are arranged, iron powder of different particle sizes can be screened, the vibration frame is connected with the box body through the rubber sleeve, therefore, the iron powder can be prevented from falling off from the outer side of the vibration frame in the vibration process of the vibration frame, and the screening precision can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of iron powder screening, in particular to an iron powder multi-stage screening magnetic separation device. Background Art

[0002] High-purity iron powder usually refers to iron powder with higher purity, which is mainly used in some special industrial applications, such as electronic materials, magnetic materials, medicine, catalysts and other fields.

[0003] Chinese patent publication number CN210994751U discloses a multi-stage magnetic separation mechanism for separating garnet sand, belonging to the field of mineral magnetic separation machinery technology. A multi-stage magnetic separation mechanism for separating garnet sand includes a housing, characterized in that a feed port is fixedly connected to the upper surface of the housing, and a rectangular filter trough is fixedly connected to the bottom end of the feed port. During the magnetic separation process, the garnet sand first enters the arc-shaped trough below the primary magnetic separation wheel, so that in the area where the garnet sand flows in the arc-shaped trough, each part of the primary magnetic separation wheel has the same effect, thereby improving the magnetic separation effect. A conveyor belt is used below the arc-shaped trough, which serves as a buffer platform for the device. Under the action of gravity, if the buffer platform is not designed, the flow rate of the garnet sand will increase, and the intermediate and advanced magnetic separation wheels will lose their function. The magnetic strength of each layer of screening wheel increases, and the fineness of the screening also increases, while ensuring the magnetic separation effect and efficiency. The multi-stage magnetic separation mechanism does not have a multi-stage screening function. When it performs magnetic separation on high-purity iron powder, larger particles and impurities may not be effectively removed.

[0004] In order to solve the above technical problems, the patent document with publication number CN221657194U discloses a high-purity iron powder multi-stage screening magnetic separation device. When in use, when the high-purity iron powder enters the feed trough, it will fall onto the scattering roller through the feed trough and be scattered by the rotation of the scattering roller. The scattered high-purity iron powder will fall onto one of the screens and be affected by the screening of one of the screens. The smaller particles in the smaller high-purity iron powder will fall onto the other screen. When the smaller high-purity iron powder falls on the other screen, it will be affected by the screening of another screen again, and the smaller high-purity iron powder will be screened onto the slide. When the high-purity iron powder falls on the two screens and the slide respectively, it will be affected by the inclination of the two first magnetic separation rollers and the slide. The high-purity iron powder moves in the direction of the two first magnetic separation rollers and the second magnetic separation roller respectively. When the high-purity iron powder contacts the two first magnetic separation rollers and the second magnetic separation roller respectively, it will be adsorbed by the magnetic force of the two first magnetic separation rollers and the second magnetic separation roller. At the same time, the impurities in the high-purity iron powder on one of the screens will slide onto the other screen, and along with the impurities in the high-purity iron powder on the other screen, they will slide onto the slide. At the same time, along with the impurities in the high-purity iron powder on the slide, they will enter the waste box and be collected. When the two first magnetic separation rollers and the second magnetic separation roller rotate in opposite directions, the high-purity iron powder adsorbed on the two first magnetic separation rollers and the second magnetic separation roller will be scraped off by the scraper respectively, and enter the multiple collection boxes respectively through the multiple first slots. However, in this technical solution, the iron powder passing through the screen is easily adsorbed by the magnetic force of the magnetic separation roller below the screen. Therefore, there is a problem of low screening accuracy.

[0005] The patent document with publication number CN219073227U discloses a high-purity iron powder multi-stage screening magnetic separation device. When using the high-purity iron powder multi-stage screening magnetic separation device, first, the raw material is put into the feed port, and the motor of the anti-blocking component is started to drive gear one and gear two to rotate, and the power is transmitted to gear three and the transmission rod, so that the baffle one drives the magnetic separator and the fine brush to rotate, and the exhaust fan one is started, so that the raw material is filtered through the screen and collected in the collection box one, and a filter screen one is provided above the exhaust fan, so that the large-particle raw material rotates, thereby achieving the effect of preventing the large-particle raw material from blocking the screen and improving the filtration efficiency. After screening, the exhaust fan two installed on the support frame is started, and the valve is opened so that the raw material filtered by the screen is collected in the collection box two. However, in the process of starting the exhaust fan 2 and opening the valve to collect the raw materials filtered by the screen into the collection box 2, the exhaust fan 2 needs to have a strong suction force. However, if the iron powder blocks the filter 2, the iron powder above the screen cannot be effectively collected. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide an iron powder multi-stage screening magnetic separation device which can improve screening accuracy, can conveniently remove impurities in iron powder, and can conveniently take out the screened iron powder.

[0007] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0008] The iron powder multi-stage screening magnetic separation device includes a box body, the upper end of the box body is fixedly connected to an inlet pipe, a plurality of screening units are arranged in the vertical direction of the box body, and the particle size of the iron powder screened by the plurality of screening units decreases from top to bottom. A magnetic separation component is arranged on one side of the box body above the screening unit, and a material receiving component is arranged on the outer side of the box body below the magnetic separation component. The lower end of the box body is fixedly connected to a discharge pipe, and a cleaning component is arranged on one side of the box body above the screening unit; the magnetic separation component includes a window opened on the box body, an electromagnetic plate is arranged in the window, and the front and rear ends of the electromagnetic plate are connected to the window The front and rear side walls are sealed in contact with each other, an ear plate is fixed at the lower end of the window, the lower end of the ear plate is arc-shaped, and the lower end of the ear plate is in sealing contact with the rubber gasket in the lower end of the window, the upper end of the electromagnetic plate is arc-shaped, and the upper end of the electromagnetic plate is in sealing contact with the rubber gasket in the upper end of the window, a rotating shaft is fixed at the lower end of the ear plate, and the rotating shaft is rotatably connected to the box body, a motor is fixed on the box body, and the output shaft of the motor is concentrically fixedly connected to the rotating shaft, and after the electromagnetic plate rotates into the box body, it can magnetically adsorb the iron powder on the screening unit, and after the electromagnetic plate rotates out of the box body, the power is cut off, and the iron powder adsorbed by the electromagnetic plate can slide into the material receiving assembly.

[0009] Specifically, the screening unit includes a vibration frame, a screen is fixed in the vibration frame, a rubber sleeve is fixedly and sealedly connected to the outside of the vibration frame, the outer side of the rubber sleeve is fixedly and sealedly connected to the inner wall of the box, a vibration motor is fixedly connected to one side of the vibration frame, a support rod is fixed in the box below the vibration frame, and the support rod is connected to the vibration frame through a spring.

[0010] Specifically, the material receiving assembly includes a tray fixed on the outside of the box body, and the lower end of the tray is fixedly connected to the outlet pipe.

[0011] Specifically, the cleaning assembly includes a manhole opened on the box body, and a sealing plate is detachably fixedly and sealingly connected to the box body, and the sealing plate seals the manhole.

[0012] Specifically, a striking hammer is fixed on the side of the electromagnetic plate facing outside the box.

[0013] Specifically, a material guide plate is fixed in the lower end of the box.

[0014] Specifically, the mesh sizes of the multiple screening units increase sequentially from top to bottom.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This device can screen iron powder of different particle sizes by setting up multiple screening units. The vibration frame is connected to the box through a rubber sleeve, so the vibration frame can prevent iron powder from falling from the outside of the vibration frame during vibration, which can improve the screening accuracy.

[0017] 2. When the electromagnetic plate magnetically adsorbs the iron powder above the screen, other impurities can remain on the screen, which can be used to magnetically separate the iron powder and improve its purity.

[0018] 3. The electromagnetic plate can rotate inside or outside the box, so as to transfer the iron powder on the screening unit to the material receiving assembly outside the box.

[0019] 4. When the electromagnetic plate adsorbs the iron powder on the screening unit, the hammer can strike the electromagnetic plate, which can make the impurities mixed in the iron powder adsorbed by the electromagnetic plate fall off, thereby further improving the purity of the iron powder.

[0020] 5. After the electromagnetic plate rotates to the outside of the box, the electromagnetic plate is powered off and the hammer is started, which can accelerate the falling of iron powder on the electromagnetic plate.

[0021] 6. By setting a manhole, it is convenient to remove impurities on the screen.

[0022] 7. The material guide plate is set to facilitate the discharge of iron powder in the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the device.

[0024] Figure 2 A cross-sectional view of the device.

[0025] Figure 3 for Figure 2 Magnified view of area A in center.

[0026] Figure 4 Schematic diagram of the electromagnetic plate after rotation.

[0027] Figure 5 for Figure 4 Magnified view of area B.

[0028] Figure 6 for Figure 4 Magnified view of area C in the middle.

[0029] The names of the parts in the accompanying drawings are: 1. Box body, 2. Inlet pipe, 3. Electromagnetic plate, 4. Ear plate, 5. Percussion hammer, 6. Motor, 7. Tray, 8. Outlet pipe, 9. Guide plate, 10. Drain pipe, 11. Window, 12. Rubber pad, 13. Vibration frame, 14. Screen, 15. Rubber sleeve, 16. Support rod, 17. Spring, 18. Vibration motor, 19. Manhole, 20. Closing plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example 1: Reference Figures 1-6 As shown, the iron powder multi-stage screening magnetic separation device includes a box body 1, the upper end of the box body 1 is fixedly connected to an inlet pipe 2, and multiple screening units are arranged in the vertical direction inside the box body 1. The particle size of the iron powder screened by the multiple screening units decreases from top to bottom.

[0032] A magnetic separation component is provided on one side of the box body 1 above the screening unit, and a material receiving component is provided on the outer side of the box body 1 below the magnetic separation component.

[0033] The lower end of the box body 1 is fixedly connected to a discharge pipe 10 , and a material guide plate 9 is fixed inside the lower end of the box body 1 .

[0034] A cleaning assembly is provided on one side of the box body 1 above the screening unit.

[0035] The magnetic separation assembly includes a window 11 formed in the housing 1. An electromagnetic plate 3 is positioned within the window 11. The front and rear ends of the electromagnetic plate 3 are in sealed contact with the front and rear sidewalls of the window 11. A lug plate 4 is secured to the lower end of the window 11. The lower end of the lug plate 4 is curved and in sealed contact with a rubber gasket 12 within the lower end of the window 11. The upper end of the electromagnetic plate 3 is curved and in sealed contact with the rubber gasket 12 within the upper end of the window 11. The lug plate 4, electromagnetic plate 3, and rubber gasket 12 within the window 11 cooperate to seal the window 11, preventing iron powder from being discharged from the window 11 during screening.

[0036] A rotating shaft is fixed to the lower end of the ear plate 4, which is rotatably connected to the housing 1. A motor 6 is fixed to the housing 1, and the output shaft of the motor 6 is concentrically fixedly connected to the rotating shaft. When the electromagnetic plate 3 rotates into the housing 1, it can magnetically attract the iron powder on the screening unit. When the electromagnetic plate 3 rotates out of the housing 1 and is powered off, the iron powder attracted by the electromagnetic plate 3 can slide into the material receiving assembly.

[0037] When the electromagnetic plate 3 magnetically attracts the iron powder above the screen 14, other impurities can remain on the screen 14, magnetically separating the iron powder and improving the purity of the iron powder. The electromagnetic plate 3 can rotate inward or outward from the box 1, thereby transferring the iron powder on the screening unit to the material receiving assembly outside the box 1.

[0038] The screening unit includes a vibration frame 13, a screen 14 is fixed in the vibration frame 13, a rubber sleeve 15 is fixedly and sealedly connected to the outside of the vibration frame 13, the outer side of the rubber sleeve 15 is fixedly and sealedly connected to the inner wall of the box body 1, a vibration motor 18 is fixedly connected to one side of the vibration frame 13, and a support rod 16 is fixed in the box body 1 below the vibration frame 13, and the support rod 16 is connected to the vibration frame 13 by a spring 17. Specifically, the mesh size of the screens 14 of the multiple screening units increases from top to bottom.

[0039] This device can screen iron powder of different particle sizes by setting up multiple screening units. The vibration frame 13 is connected to the box body 1 through the rubber sleeve 15, so that the iron powder can be prevented from falling from the outside of the vibration frame 13 during the vibration process of the vibration frame 13, which can improve the screening accuracy.

[0040] The material receiving assembly includes a tray 7 fixed on the outside of the box body 1, and the lower end of the tray 7 is fixedly connected to an outlet pipe 8.

[0041] The cleaning assembly includes a manhole 19 opened on the box body 1 , and a sealing plate 20 is detachably fixedly and sealedly connected to the box body 1 , and the sealing plate 20 seals the manhole 19 .

[0042] During operation, the iron powder to be screened enters the box body 1 through the inlet pipe 2, and the vibration motor 18 is started. The vibration motor 18 causes the vibration frame 13 and the screen 14 to vibrate, and the iron powder is screened in sequence by multiple screening units, thereby screened iron powders of different particle sizes. The iron powder with the smallest particle size is discharged from the discharge pipe 10 to the outside of the box body 1 under the guidance of the guide plate 9.

[0043] When it is necessary to magnetically separate iron powder of different particle sizes, start the motor 6 to rotate the electromagnetic plate 3 90 degrees into the box 1. After the electromagnetic plate 3 rotates 90 degrees into the box 1, it is located above the screening unit on one side of it. Then, the electromagnetic plate 3 is energized. The electromagnetic plate 3 generates magnetic force and magnetically adsorbs the iron powder on the screening unit, and impurities in the iron powder remain on the screen 14.

[0044] Then the electromagnetic plate 3 is rotated toward the outside of the box 1. Since the rubber pad 12 is provided in the lower end of the window 11, the angle of rotation of the electromagnetic plate 3 toward the outside of the box 1 can be greater than 90 degrees. Figure 4 and Figure 6 As shown, at this time, the electromagnetic plate 3 outside the box body 1 is located above the tray 7 and is in an inclined state. Then the electromagnetic plate 3 is powered off, and the iron powder on the electromagnetic plate 3 can slide into the tray 7 and be discharged through the outlet pipe 8.

[0045] Example 2: Based on Example 1, refer to Figures 1-6 As shown, a striking hammer 5 is fixed on the side of the electromagnetic plate 3 facing outside the box body 1 .

[0046] When the electromagnetic plate 3 absorbs the iron powder on the screening unit, the hammer 5 can strike the electromagnetic plate 3, causing impurities contained in the iron powder absorbed by the electromagnetic plate 3 to fall off, thereby further improving the purity of the iron powder. After the electromagnetic plate 3 rotates to the outside of the box 1, the electromagnetic plate 3 is powered off and the hammer 5 is activated, which can accelerate the falling of the iron powder on the electromagnetic plate 3.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An iron powder multi-stage screening magnetic separation device, comprising a housing (1), wherein the upper end of the housing (1) is fixedly connected to an inlet pipe (2), and characterized in that: A plurality of screening units are arranged in the vertical direction in the box body (1), and the particle sizes of the iron powder screened by the plurality of screening units decrease from top to bottom. A magnetic separation component is arranged on one side of the box body (1) above the screening unit, and a material receiving component is arranged on the outer side of the box body (1) below the magnetic separation component. A discharge pipe (10) is fixedly connected to the lower end of the box body (1), and a cleaning component is arranged on one side of the box body (1) above the screening unit; the magnetic separation component includes a window (11) opened on the box body (1), an electromagnetic plate (3) is arranged in the window (11), the front and rear ends of the electromagnetic plate (3) are in sealing contact with the front and rear side walls of the window (11), and an ear plate (4) is fixed to the lower end of the window (11). The lower end of the ear plate (4) is arc-shaped, and the lower end of the ear plate (4) is in sealing contact with the rubber pad (12) in the lower end of the window (11). The upper end of the electromagnetic plate (3) is arc-shaped, and the upper end of the electromagnetic plate (3) is in sealing contact with the rubber pad (12) in the upper end of the window (11). A rotating shaft is fixed to the lower end of the ear plate (4), and the rotating shaft is rotatably connected to the box body (1). A motor (6) is fixed to the box body (1), and the output shaft of the motor (6) is concentrically fixedly connected to the rotating shaft. After the electromagnetic plate (3) rotates inwardly into the box body (1), it can magnetically adsorb the iron powder on the screening unit. After the electromagnetic plate (3) rotates outwardly into the box body (1), the power is cut off, and the iron powder adsorbed by the electromagnetic plate (3) can slide into the material receiving component.

2. The iron powder multi-stage screening magnetic separation device according to claim 1, characterized in that: The screening unit comprises a vibration frame (13), a screen (14) is fixed in the vibration frame (13), a rubber sleeve (15) is fixedly and sealedly connected to the outside of the vibration frame (13), the outside of the rubber sleeve (15) is fixedly and sealedly connected to the inner wall of the box (1), a vibration motor (18) is fixedly connected to one side of the vibration frame (13), a support rod (16) is fixed in the box (1) below the vibration frame (13), and the support rod (16) is connected to the vibration frame (13) via a spring (17).

3. The iron powder multi-stage screening magnetic separation device according to claim 1, characterized in that: The material receiving assembly comprises a tray (7) fixed on the outside of the box body (1), and the lower end of the tray (7) is fixedly connected to an outlet pipe (8).

4. The iron powder multi-stage screening magnetic separation device according to claim 1, characterized in that: The cleaning assembly comprises a manhole (19) opened on the box body (1), and a sealing plate (20) is detachably fixedly and sealedly connected to the box body (1), and the sealing plate (20) seals the manhole (19).

5. The iron powder multi-stage screening magnetic separation device according to claim 1, characterized in that: A striking hammer (5) is fixed on one side of the electromagnetic plate (3) facing outside the box (1).

6. The iron powder multi-stage screening magnetic separation device according to claim 1, characterized in that: A material guide plate (9) is fixed inside the lower end of the box body (1).

7. The iron powder multi-stage screening magnetic separation device according to claim 2, characterized in that: The mesh sizes of the screens (14) of the plurality of screening units increase sequentially from top to bottom.

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