Electric sieve for purifying iron powder

Abstract

The invention relates to the technical field of iron powder purifiers, and particularly provides an electric sieve for purifying iron powder. Comprising a purification machine provided with a feeding port and a discharging port, two first rollers rotating oppositely are installed in the purification machine, fixed first magnets are arranged in the first rollers, the section of each first magnet is semicircular, the length of each first magnet is the same as that of each first roller, and the cambered surfaces of the two first magnets are oppositely arranged. And the feeding port is located between the two rollers I. Through the arrangement of the rollers I and the magnets I, the two rollers I at the upper position in the purification machine perform primary extrusion adsorption on raw materials, the raw materials fall on the vibrating screen to be vibrated and dispersed along with rotation of the rollers I, and then secondary adsorption purification is performed, so that surface iron powder is gathered as much as possible, and the quality of the raw materials is improved. Meanwhile, the raw materials which are not adsorbed by the first roller above fall on the second roller to be subjected to re-purification operation, so that the purification efficiency is improved while the purification effect and the iron powder quality are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of iron powder purifying machines, and specifically proposes an electric screen for purifying iron powder. Background Art

[0002] The iron powder purification vibrating screen is a device used to screen iron powder during the iron powder purification process. Different types of vibrating screens are selected according to different usage environments. The traditional vibrating screen purification method only purifies and separates iron powder of different mesh sizes, and cannot purify iron powder and non-iron powder materials. The multi-roller iron powder purification machine is used to purify iron powder and non-iron powder materials. It is usually composed of multiple magnetic rollers, feeding devices, transmission devices, frames and other parts, and uses the magnetic differences of different materials to purify iron powder.

[0003] The multi-roller purifier purifies iron powder in sequence through multiple magnetic rollers, which can effectively remove impurities and improve the grade of iron powder. By adjusting the parameters of the magnetic rollers, it can adapt to the purification of iron powder with different magnetic differences, and can also have a good purification effect on weakly magnetic iron powder. The powder materials in the common warm baby in daily life, the mining of iron ore, and the waste treatment of the steel industry are all one of the raw materials for iron powder purification. In the purification process of multiple rollers: first, although the roller can adsorb iron powder, for raw materials with larger particle size, it is not all iron powder materials, and it will also be purified and collected with the roller, affecting the final iron powder grade; secondly, when a large amount of iron powder is adsorbed on the roller, it will entrain some non-iron powder raw materials. Although the multi-roller purifier can improve the grade of iron powder through multiple adsorption and detachment, the longer adsorption and screening process will greatly affect the efficiency of purification. Summary of the invention

[0004] In order to solve the above problems, the present invention provides an electric screen for purifying iron powder, which is used to solve the problems mentioned in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve the goal: an electric screen for purifying iron powder, comprising a purifier with an inlet and an outlet, wherein two rollers rotating in opposite directions are installed inside the purifier, a fixed magnet that does not rotate is arranged inside the roller, the cross-section of the magnet is semicircular, and its length is the same as the length of the roller, the arc surfaces of the two magnets are arranged oppositely, and the inlet is located between the two rollers; a re-purification mechanism is arranged directly below the two rollers for secondary purification of raw materials that are not adsorbed by the magnet; the same rotatable rollers are arranged correspondingly directly below the two rollers, a fixed magnet that does not rotate is arranged inside the roller, the cross-section of the magnet is semicircular, and its length is the same as the length of the roller, the arc surfaces of the two magnets are arranged oppositely, and the outlet is located between the two rollers.

[0006] Preferably, the re-purification mechanism includes a mounting frame horizontally arranged inside the purifier, a rotatable roller 2 is suspended directly above the mounting frame, a fixed magnet 2 is provided inside the roller 2, the cross-section of the magnet 2 is semicircular, and the length is the same as the length of the roller 2, the arc surface of the magnet 2 is facing upward and the plane is in a horizontal state, the mounting frame is located on one side of the roller 2 and has an area for placing waste, and the mounting frame is located on the other side of the roller 2 and has an area for placing iron powder.

[0007] Preferably, the mounting frame comprises two left and right areas, a material guide box with an inclined discharge port is arranged above the mounting frame, and its inclined direction is opposite to the rotation direction of the second roller, and the two sides of the material guide box are fixedly connected to the mounting frame through support rods, and a leak-proof leather strip is installed in one side area of ​​the mounting frame, and the leak-proof leather strip is against the surface of the second roller, and a gap is provided between the other side area of ​​the mounting frame (4) and the second roller.

[0008] Preferably, the width of the mounting frame is the distance between the centers of two horizontally adjacent rollers, vibrating screens are installed on both sides of the mounting frame, and a vibration assembly is installed on the surface of the mounting frame to ensure that the mounting frame and the vibrating screen can move longitudinally, and two inclined guide plates are symmetrically provided on the surface of the mounting frame, and the downward inclined direction of the guide plates extends to above the vibrating screen.

[0009] Preferably, the vibration assembly includes two shafts with multiple protrusions equidistantly provided on the surface, the two shafts are symmetrically arranged below the mounting frame, the mounting frame is symmetrically provided with two strip protrusions, and the protrusions of the shafts squeeze the strip protrusions to make the mounting frame move longitudinally.

[0010] Preferably, transverse grooves running through the front and back are provided on both sides of the mounting frame, limiting grooves are provided on both sides of the inner wall of the purifier, the two sides of the vibrating screen are respectively overlapped on the inside of the transverse grooves and the limiting grooves, the inner wall of the transverse groove is connected to the surface of the vibrating screen through a spring seat, and a plurality of inclined guide rods are arranged inside the limiting grooves, and the guide rods are movably connected to the surface of the vibrating screen.

[0011] Preferably, the vibrating screen includes cross frames on both sides and a screen therebetween, wherein one of the cross frames is located inside the cross groove and connected to the spring seat, and the other cross frame is located inside the limit groove and is movably penetrated by a guide rod, T-shaped rods are provided on both sides of the screen, corresponding T-shaped slots are opened on the sides of the cross frames, and the T-shaped rods are movably installed inside the T-shaped slots, and the surface of the purifier is equipped with an operating port with a sealed door.

[0012] Preferably, the connecting pipes at the ends of roller one and roller two extend to the outside of the purifier, the surface of roller one is sleeved with gear one, the surface of roller two is sleeved with gear two, and gear two is meshed with each gear one through a linkage assembly.

[0013] Preferably, the two shafts are driven by external motors.

[0014] Preferably, the same guide plates are installed on both sides of the discharge port of the purifier, and the guide plates extend in a downward inclined direction to the top of the discharge port. The guide plates are located directly below the roller one.

[0015] 1. The above technical solution has the following advantages or beneficial effects: The present invention provides an electric screen for purifying iron powder. By setting roller one and magnet one, two rollers at the upper position inside the purifier perform the first extrusion and adsorption of the raw material. As roller one rotates, it falls on the vibrating screen for vibration and dispersion, and then performs the second adsorption and purification to gather the surface iron powder as much as possible. At the same time, the raw material not adsorbed by the upper roller one falls on roller two for re-purification operation, which not only ensures the quality of the iron powder, but also improves the efficiency of purification.

[0016] 2. The above technical solution has the following advantages or beneficial effects: The present invention provides an electric screen for purifying iron powder. By setting a vibrating screen and a mounting frame, when the iron powder falls on the top of the vibrating screen, the vibrating screen will move horizontally while moving longitudinally. The regular movement will make the iron powder raw material more evenly dispersed, thereby improving the effect of iron powder purification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention and its features, configurations and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts throughout the drawings, which are not drawn to scale, with emphasis on illustrating the subject matter of the present invention.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an electric screen for purifying iron powder provided by the present invention.

[0019] Figure 2 It is a structural schematic diagram of the connection position of gear 1 and gear 2 of the present invention.

[0020] Figure 3 It is a schematic diagram of the side sectional structure.

[0021] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the purification machine.

[0022] Figure 5 It is a three-dimensional structural diagram of the re-purification mechanism.

[0023] Figure 6 It is a schematic diagram of the partially disassembled structure of the vibrating screen.

[0024] Figure 7 It is a schematic cross-sectional view of a purification machine.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the purification machine.

[0026] In the figure: 1. Purifier; 2. Roller 1; 3. Magnet 1; 4. Mounting frame; 5. Roller 2; 6. Magnet 2; 7. Material guide box; 8. Leak-proof leather strip; 9. Vibrating screen; 10. Guide plate; 11. Shaft rod; 12. Strip protrusion; 13. Horizontal groove; 14. Limiting groove; 15. Spring seat; 16. Guide rod; 17. Horizontal frame; 18. Screen; 19. T-shaped rod; 20. T-shaped slot; 21. Operating port; 22. Gear 1; 23. Gear 2. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] An electric sieve for purifying iron powder, Figure 1 In the embodiment, the feed inlet and the discharge outlet of the purifier 1 are both located in the middle, the raw material enters from the feed inlet, and the purified iron powder is discharged from the discharge outlet. Figure 3 In the figure, the upper part of the interior of the purifier 1 is equipped with two rollers 2 rotating in opposite directions. The length of roller 2 is the length of the inner wall of the purifier 1, ensuring that roller 2 has a sufficiently long purification range. According to the cross-section, a fixed magnet 3 is provided inside roller 2. The cross-section of magnet 3 is semicircular, and its length is the same as the length of roller 2. The arc surfaces of the two magnets 3 are arranged opposite to each other, and the feed port is located between the two rollers 2, that is, the feed range is the distance between the centers of the two magnets 3. Magnet 3 can be made by mixing magnetic material and strong metal material to provide support when the two rollers 2 rotate in opposite directions.

[0030] In this embodiment, it is necessary to ensure that the magnet 3 does not rotate and the roller 2 rotates. Figure 1 and Figure 7A round rod with a rectangular groove at one end passes through the middle of the middle roller 2. In fact, any non-circular groove will do. The magnet 3 can be fixed on the round rod by welding or bolting. One end of the round rod is located on the outside of the purifier 1. At this time, a protective cover is installed on the outside, and a rectangular block matching the rectangular groove is provided inside to ensure that the round rod will not rotate, but it will not affect the rotation of the roller 2.

[0031] Figure 3 In the embodiment, a re-purification mechanism is provided at the position directly below the two rollers 2, so as to ensure that the crushed raw materials cannot be adsorbed on the surface of the roller 2 in time, so as to ensure that the raw materials are purified for the second time to avoid waste; the two rollers 2 in the upper part of the purifier 1 are arranged in the same manner, and the roller 2 and magnet 3 below are installed in the same manner, the difference is that the arc surfaces of the two magnets 3 at this position are arranged opposite to each other, and the discharge port is located between the two rollers 2, that is, the center position of the two magnets 3, and the rotation direction of the roller 2 is referred to in Figure 2 The direction of the arrow.

[0032] The overall process is as follows: the raw material is poured in from the feed port, and first falls between the two upper rollers 2. The magnet 3 will first perform magnetic attraction to adsorb the iron powder on the surface of the roller 2. As the two rollers 2 rotate towards each other, the raw material will be brought into the position between the two rollers 2, and a strong extrusion force will be formed. The magnetic attraction force exists all the time in this process until the iron powder on the roller 2 rotates to a position away from the magnet 3. The centrifugal force will throw the first purified iron powder to a position far away from the center of the circle, and because the iron powder The iron powder gradually falls due to the gravity of the body. Since the iron powder gathers on the surface of roller 2, non-iron powder materials will be wrapped between the iron powders, affecting the purification effect; the falling iron powder raw material will fall between the two rollers 2 below. During the falling process, the gathered iron powder will disperse, and the iron powder will be adsorbed on the surface of roller 2 again. The same non-iron powder material will fall into the interior of the purifier 1. As the roller 2 below rotates, when the iron powder moves to a position away from magnet 3, it will also be thrown to the discharge port of the purifier 1 due to centrifugal force.

[0033] Figure 7 It can be clearly seen that the bottom of the purifier 1 is inclined, and there is a discharge port extending from the lower end. When the non-iron powder material falls on the bottom of the purifier 1, the waste will slide to the discharge port and be discharged.

[0034] Figure 3 and Figure 5In the embodiment, the re-purification mechanism includes a mounting frame 4 horizontally arranged inside the purifier 1, the length of the mounting frame 4 is the same as the length inside the purifier 1, and a rotatable roller 2 5 is suspended directly above the mounting frame 4. In this embodiment, a round rod with a rectangular groove at the end thereof passes through the roller 2 5, and the round rod extends out of the purifier 1. A rectangular block is also arranged inside the protective cover to prevent the round rod from rotating. A fixed magnet 2 6 is arranged inside the roller 2 5, and the magnet 2 6 is fixed to the round rod by welding or bolts. Figure 2 The cross section of the middle magnet 2 6 is semicircular and its length is the same as that of the roller 2 5 . The arc surface of the magnet 2 6 faces upward and the plane is in a horizontal state, ensuring that the raw material can first fall on one side of the magnet 2 6 for re-purification operation.

[0035] A material guide box 7 with an inclined discharge port is arranged above the mounting frame 4. The inclined direction is opposite to the rotation direction of the roller 2 5. That is, it is necessary to ensure that the falling material will fall on the left half of the magnet 2 6 (see Figure 2 ), part of the non-iron powder material falls on the right side of the mounting frame 4 due to its own gravity, and the iron powder is adsorbed on the surface of the roller 2 5 due to magnetic attraction. As it rotates to the non-magnetic area, it also falls due to centrifugal force and its own gravity, which is the waste collection area. Figure 2 and Figure 7 The mounting frame 4 is divided into two parts, the left side is the waste collection area, and the right side is the iron powder collection area. The left area of ​​the mounting frame 4 is installed with a leak-proof strip 8, which is made of rubber, and part of its surface area is against the surface of the roller 2 5. Due to its own deformation ability, it is ensured that during the rotation of the roller 2 5, the waste slides to the left side through the leak-proof strip 8. At the same time, this position is an inclined surface. The purifier 1 has a discharge port at the lower end to uniformly collect and process the waste. The gap between the other side area of ​​the mounting frame 4 and the roller 2 5 is to facilitate the iron powder to fall to the discharge port.

[0036] The overall process is as follows: the raw materials not adsorbed by roller 1 2 fall into the inside of the guide box 7, and the guide box 7 will evenly sprinkle the raw materials on the left half area of ​​roller 2 5. Due to the adsorption of iron powder by magnet 2 6, non-iron powder raw materials will fall on the left half of the mounting frame 4 and the waste collection area. The iron powder passes through the gap as roller 2 5 rotates until it moves to the non-magnetic area. The centrifugal force of roller 2 5 and the gravity of the iron powder itself will cause the iron powder to fall (see Figure 2 ), thereby realizing the function of secondary purification and reducing the waste of raw materials.

[0037] Figure 2 and Figure 6In the embodiment, the width of the mounting frame 4 is the distance between the centers of two horizontally adjacent rollers 2. Both sides of the mounting frame 4 are equipped with a vibrating screen 9. The vibrating screen 9 includes two cross frames 17, one of which is located inside the cross groove 13 and connected to the spring seat 15, and the other cross frame 17 is located inside the limit groove 14 and is movably penetrated by the guide rod 16. T-shaped rods 19 are provided on both sides of the screen 18. The T-shaped rods 19 and the screen 18 can be an integrally formed structure. Corresponding T-shaped slots 20 are opened on the sides of the cross frame 17, and the T-shaped rods 19 are movably installed inside the T-shaped slots 20. Figure 8 An operating port 21 is set in the medium purification machine 1 corresponding to the horizontal position of the screen 18. Since the mesh number of the screen 18 is fixed, but the mesh number of the iron powder is different during use, there will be a position where the raw material blocks the screen hole. The staff can replace the screen 18 through the operating port 21. Two inclined guide plates 10 are symmetrically provided on the surface of the mounting frame 4. The downward inclined direction of the guide plate 10 extends to the screen 18 to ensure that the iron powder purified for the first time falls on the screen 18.

[0038] Figure 3 In the figure, the vibration assembly includes two shafts 11 with multiple protrusions equidistantly provided on the surface. The shafts 11 are driven by an external motor (not shown in the figure). The length of the protrusions is the same as the length of the shafts 11. The two shafts 11 are symmetrically arranged below the mounting frame 4 to provide symmetrical support force for the mounting frame 4 to ensure that the movement of the mounting frame 4 is more stable. The mounting frame 4 is symmetrically provided with two strip protrusions 12. When the shafts 11 rotate, the protrusions of the shafts 11 squeeze the strip protrusions 12 to make the mounting frame 4 move longitudinally to achieve vibration, which can prevent the raw materials from accumulating at the discharge port of the guide box 7 and at the same time sieve out the gathered iron powder raw materials to ensure that the iron powder raw materials fall more evenly on the roller 2 below, thereby improving the purification effect.

[0039] Figure 3 and Figure 5 In the figure, transverse grooves 13 running through the front and back are provided on both sides of the mounting frame 4, and limiting grooves 14 are provided on both sides of the inner wall of the purifier 1. The two sides of the vibrating screen 9 are respectively overlapped on the inside of the transverse grooves 13 and the limiting grooves 14, and the vibrating screen 9 has space for lateral movement. The inner wall of the transverse groove 13 is connected to the surface of the vibrating screen 9 through a spring seat 15. A plurality of inclined guide rods 16 are arranged inside the limiting grooves 14, and the guide rods 16 movably penetrate the surface of the vibrating screen 9. When the vibrating screen 9 moves longitudinally with the mounting frame 4, the vibrating screen 9 will also move laterally. At this time, the iron powder raw material falling on the vibrating screen 9 will be dispersed more thoroughly; in order to ensure that the mounting frame 4 can move longitudinally stably, guide grooves are provided at the front and rear of the mounting frame 4, and guide blocks are provided at corresponding positions inside the corresponding purifier 1.

[0040] The overall process is: the shaft 11 rotates, and the protrusion on its surface squeezes the strip protrusion 12, driving the mounting frame 4 to move upward. When the protrusion no longer squeezes the strip protrusion 12, the mounting frame 4 will also drop due to its own gravity, repeatedly forming longitudinal vibrations to ensure stable material discharge of the material guide box 7. At the same time, the vibrating screen 9 will also move longitudinally during this process. During the rising process, it moves away from the mounting frame 4 along the axial direction of the guide rod 16, and during the descending process, it moves closer to the mounting frame 4 along the axial direction of the guide rod 16, forming a regular lateral movement to ensure a more uniform dispersion of the iron powder raw material.

[0041] Figure 2 and Figure 4 In the embodiment, the connecting pipes at the ends of roller 1 2 and roller 2 5 are extended to the outside of the purifier 1, the surface of roller 1 2 is sleeved with gear 1 22, and the surface of roller 2 5 is sleeved with gear 2 23, with gear 2 23 as the main driving wheel, and gear 2 23 is meshed with each gear 1 22 through a linkage assembly. In this embodiment, the vertical radius line of gear 2 23 is used to divide the gear 2 23, see Figure 2 Gear 2 23 is connected to the upper left gear 1 22 through two identical transmission gears, and gear 23 is connected to the lower right gear 1 22 through a transmission gear. The left and right sides are centrally symmetrical. It should be noted that the linkage assembly is not specifically limited, and it is only necessary to ensure that the rotation directions of roller 1 2 and roller 2 5 meet the requirements.

[0042] Figure 3 and Figure 7 In the figure, the same guide plates 10 are installed on both sides of the discharge port of the purifier 1. The guide plates 10 extend in a downward inclined direction to the top of the discharge port. The guide plates 10 are located directly below the roller 2. The area between the purifier 1 and the guide plates 10 is an inclined surface to achieve the discharge of waste.

[0043] The present invention provides an electric screen for purifying iron powder. The gear 23 and the shaft 11 rotate at the same time, and all the rollers 2 and 5 rotate. The raw material is poured in from the position of the feed port and first falls between the two upper rollers 2. The magnet 3 first performs a magnetic attraction action to adsorb the iron powder on the surface of the roller 2. As the two rollers 2 rotate towards each other, the raw material is brought into the position between the two rollers 2 and a strong extrusion force is formed. The magnetic attraction force exists in this process until the iron powder on the roller 2 rotates to a position away from the magnet 3. The centrifugal force throws the iron powder purified for the first time to a position far away from the center of the circle, and because the gravity of the iron powder itself gradually falls, the falling iron powder raw material falls on the vibrating screen 9, and the iron powder raw material is dispersed more evenly by vibration. The iron powder raw material continues to fall to the two rollers 2 below. The iron powder is once again adsorbed on the surface of roller 2. At this time, the non-iron powder material will fall to the two sides of the purifier 1. With the rotation of the roller 2 below, when the iron powder moves to the position away from the magnet 3, it will be thrown to the discharge port of the purifier 1 due to the centrifugal force, and the non-iron powder material will fall on the guide plate 10 below, and then fall on the two side areas, and finally slide out of the purifier 1 on the inclined surface; when the raw materials not adsorbed by roller 2 fall into the inside of the guide box 7, the guide box 7 will sprinkle the raw materials evenly on the right half area of ​​roller 2 5. Due to the adsorption of iron powder by magnet 2 6, the non-iron powder raw materials will fall on the left half of the mounting frame 4 and slide to the outside of the purifier 1. The iron powder passes through the gap with the rotation of roller 2 5 until it moves to the non-magnetic area. The centrifugal force of roller 2 5 and the gravity of the iron powder itself will cause the iron powder to fall, thereby realizing the purification of the iron powder.

[0044] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0046] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. An electric screen for purifying iron powder, comprising a purifier provided with an inlet and an outlet, characterized in that: Two rollers 1 rotating in opposite directions are installed inside the purifier, a fixed magnet 1 is arranged inside the roller 1, the cross section of the magnet 1 is semicircular, and its length is the same as that of the roller 1, the arc surfaces of the two magnets 1 are arranged opposite to each other, and the feed port is located between the two rollers 1; A re-purification mechanism is provided directly below the two rollers 1, for secondary purification of the raw materials not adsorbed by the magnet 1; An identical rotatable roller one is correspondingly arranged directly below the two rollers one, and a fixed non-rotating magnet one is arranged inside the roller one. The cross-section of the magnet one is semicircular, and its length is the same as the length of the roller one. The arc surfaces of the two magnets one are arranged back to back, and the discharge port is located between the two rollers one.

2. The electric screen for purifying iron powder according to claim 1, characterized in that: The re-purification mechanism includes a mounting frame horizontally arranged inside the purification machine, a rotatable roller 2 is suspended directly above the mounting frame, a fixed magnet 2 is arranged inside the roller 2, the cross-section of the magnet 2 is semicircular, and the length is the same as the length of the roller 2, the arc surface of the magnet 2 faces upward and the plane is in a horizontal state, the mounting frame is located on one side of the roller 2 and has an area for placing waste, and the mounting frame is located on the other side of the roller 2 and has an area for placing iron powder.

3. The electric screen for purifying iron powder according to claim 2, characterized in that: The mounting frame includes two left and right areas. A material guide box with a slanted discharge port is arranged above the mounting frame, and its slanted direction is opposite to the rotation direction of the second roller. Both sides of the material guide box are fixedly connected to the mounting frame through support rods. A leak-proof leather strip is installed in one side area of ​​the mounting frame, and the leak-proof leather strip rests on the surface of the second roller. A gap is provided between the other side area of ​​the mounting frame and the second roller.

4. The electric screen for purifying iron powder according to claim 2, characterized in that: The width of the mounting frame is the distance between the centers of two horizontally adjacent rollers. Vibrating screens are installed on both sides of the mounting frame. A vibration assembly is installed on the surface of the mounting frame to ensure that the mounting frame and the vibrating screen can move longitudinally. Two inclined guide plates are symmetrically arranged on the surface of the mounting frame, and the downward inclined direction of the guide plates extends to the top of the vibrating screen.

5. The electric screen for purifying iron powder according to claim 4, characterized in that: The vibration assembly includes two shafts with multiple protrusions equidistantly arranged on the surface. The two shafts are symmetrically arranged below the mounting frame. The mounting frame is symmetrically provided with two strip protrusions. The protrusions of the shafts squeeze the strip protrusions to make the mounting frame move longitudinally.

6. The electric screen for purifying iron powder according to claim 4, characterized in that: Both sides of the mounting frame are provided with transverse grooves running through the front and back, and both sides of the inner wall of the purifier are provided with limiting grooves, and both sides of the vibration screen are overlapped on the inside of the transverse groove and the limiting groove respectively, and the inner wall of the transverse groove is connected to the surface of the vibration screen through a spring seat, and a plurality of inclined guide rods are arranged inside the limiting groove, and the guide rods are movable and pass through the surface of the vibration screen.

7. The electric screen for purifying iron powder according to claim 6, characterized in that: The vibrating screen includes cross frames on both sides and a screen between them, wherein one of the cross frames is located inside the cross groove and connected to the spring seat, and the other cross frame is located inside the limit groove and is movably penetrated by a guide rod, T-shaped rods are provided on both sides of the screen, and corresponding T-shaped slots are opened on the sides of the cross frames, and the T-shaped rods are movably installed inside the T-shaped slots, and the surface of the purifier is equipped with an operating port with a sealed door.

8. The electric screen for purifying iron powder according to claim 5, characterized in that: The connecting pipes at the ends of roller one and roller two extend to the outside of the purifier, the surface of roller one is sleeved with gear one, the surface of roller two is sleeved with gear two, and gear two is meshed with each gear one through a linkage assembly.

9. The electric screen for purifying iron powder according to claim 8, characterized in that: The two shafts are driven by external motors.

10. The electric screen for purifying iron powder according to claim 4, characterized in that: The same guide plates are installed on both sides of the discharge port of the purifier. The guide plates extend in a downward inclined direction to the top of the discharge port. The guide plates are located directly below the roller one.

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