An electric sieve for iron powder purification

Abstract

The present invention relates to the technical field of iron powder purification machines, and specifically proposes an electric screen for purifying iron powder; it includes a purification machine with an inlet and a discharge port, two rollers rotating in opposite directions are installed inside the purification machine, a fixed magnet is provided 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 opposite to each other, and the inlet is located between the two rollers. The present invention arranges roller one and magnet one, and two rollers at the upper position inside the purification machine perform the first extrusion and adsorption on the raw material. As the roller rotates, it falls on the vibrating screen for vibration and dispersion, and then performs the second adsorption and purification to minimize the aggregation of surface iron powder. At the same time, the raw material not adsorbed by the upper roller falls on roller two for re-purification. While ensuring the purification effect and iron powder quality, the purification efficiency is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of iron powder purification machines, and particularly provides an electric screen for iron powder purification. Background Art

[0002] The iron powder purification vibrating screen is a device used to screen iron powder during the iron powder purification process. The type of vibrating screen selected varies according to the 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] A multi-roller purification machine uses multiple magnetic rollers to purify iron powder in sequence, effectively removing impurities and improving the grade of iron powder. By adjusting the magnetic roller parameters, it can adapt to the purification of iron powders with different magnetic differences, and can also achieve a good purification effect on weakly magnetic iron powder. The powder materials commonly found in daily life, such as the powder materials in hot packs, iron ore mining, and waste processing in the steel industry, are all raw materials for iron powder purification. During the purification process using multiple rollers: First, although the rollers can adsorb iron powder, for raw materials with larger particle sizes, not all of the iron powder itself will be purified and collected with the rollers, affecting the final iron powder grade; second, when a large amount of iron powder is adsorbed on the rollers, it will also carry along some non-iron powder materials. Although a multi-roller purification machine can improve the grade of iron powder through multiple adsorption and detachment, the long 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 solutions: an electric screen for purifying iron powder, comprising a purifier with an inlet and a discharge port, wherein two rollers rotating in opposite directions are installed inside the purifier, a fixed magnet is provided 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 provided directly below the two rollers for secondary purification of raw materials that are not adsorbed by the magnet; the same rotatable roller is correspondingly provided directly below the two rollers, a fixed magnet is provided 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 back to back, and the discharge port is located between the two rollers.

[0006] Preferably, 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 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 includes two left and right areas, a material guide box with an inclined discharge port is provided above the mounting frame, and its inclined direction is opposite to the rotation direction of the second roller, and both sides of the material guide box are fixedly connected to the mounting frame through support rods, and a leak-proof leather strip is installed on 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, and vibrating screens are installed on both sides of the mounting frame. The surface of the mounting frame is equipped with a vibration assembly to ensure that the mounting frame and the vibrating screen can move longitudinally. 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, and 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, and limiting grooves are provided on both sides of the inner wall of the purifier. The two sides of the vibrating screen are respectively overlapped with the inside of the transverse groove and the limiting groove, and the inner wall of the transverse groove is connected to the surface of the vibrating screen through a spring seat. 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 vibrating screen.

[0011] Preferably, 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 is connected to the spring seat, and the other cross frame is located inside the limit groove and is movably penetrated by the 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.

[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 arranging roller one and magnet one, two rollers at the upper position inside the purifier perform the first squeezing and adsorption of the raw material. As roller one rotates, the raw material falls on the vibrating screen for vibration dispersion, and then undergoes a second adsorption and purification, so as to minimize the aggregation of surface iron powder. 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 longitudinally and laterally at the same time. 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 from the detailed description of non-limiting embodiments made with reference to the following drawings, in which like reference numerals indicate like parts throughout the drawings, which are not drawn to scale, with emphasis placed 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 side sectional structural diagram.

[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 cross-sectional schematic diagram of the 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; 12. Bar-shaped 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. Operation port; 22. Gear 1; 23. Gear 2. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

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

[0029] An electric sieve for purifying iron powder, Figure 1 In the figure, the feed inlet and the discharge outlet of the purifier 1 are both located in the middle. The raw materials enter from the feed inlet, and the purified iron powder is discharged from the discharge outlet. Figure 3 In the figure, the upper half 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 magnet 1 3 does not rotate and roller 1 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 can be used. The magnet 3 can be fixed to 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 middle, a re-purification mechanism is provided just below the two rollers 2. In order to prevent the crushed raw materials from being adsorbed on the surface of the roller 2 in time, the raw materials can be 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 way. The roller 2 and magnet 3 below are installed in the same way. The difference is that the arc surfaces of the two magnets 3 in this position are arranged in opposite directions. The discharge port is located between the two rollers 2, that is, the center of the two magnets 3. The rotation direction of the roller 2 is shown in FIG. 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 at the same time. 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 will throw the first purified iron powder to a position 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 1-2, non-iron powder materials will be wrapped between the iron powders, affecting the purification effect; the falling iron powder raw materials will fall between the two rollers 1-2 below. During the falling process, the gathered iron powder will disperse and the iron powder will be adsorbed on the surface of roller 1-2 again. The same non-iron powder materials will fall into the interior of the purifier 1. As the roller 1-2 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 In the figure, 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 material 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. 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 is passed through the roller 2 5. The round rod extends out of the purifier 1. A rectangular block is also provided inside the protective cover to prevent the round rod from rotating. A fixed magnet 2 6 is provided inside the roller 2 5. 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 materials can first fall on one side of the magnet 2 6 for re-purification operation.

[0035] A guide box 7 with an inclined discharge port is provided 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 to 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. A leak-proof strip 8 is installed on the left area of the mounting frame 4. The leak-proof strip 8 is made of rubber, and part of its surface area is against the surface of roller 2 5. Due to its own deformation ability, it ensures that during the rotation of roller 2 5, the waste slides to the left 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 collect and process the waste in a unified manner. The gap between the other side area of the mounting frame 4 and 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 absorbed by roller 1 2 fall into the inside of the guide box 7, which evenly spreads the raw materials on the left half of roller 2 5. Due to the adsorption of iron powder by magnet 2 6, non-iron powder raw materials fall into the left half of the mounting frame 4 and the waste collection area. As roller 2 5 rotates, the iron powder passes through the gap until it moves to the non-magnetic area. The centrifugal force of roller 2 5 and the gravity of the iron powder itself 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 figure, the width of the mounting frame 4 is the distance between the centers of two horizontally adjacent rollers 2. A vibrating screen 9 is mounted on both sides of the mounting frame 4. 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. 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. The T-shaped rods 19 are movably mounted inside the T-shaped slots 20. Figure 8 An operating port 21 is set in the horizontal position of the medium purification machine 1 corresponding to the screen 18. Since the mesh number of the screen 18 is fixed, but during use, the mesh number of the iron powder is different, 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 component 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, ensuring 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, realizing 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. The vibrating screen 9 has space for horizontal movement. The inner wall of the transverse groove 13 is connected to the surface of the vibrating screen 9 through the spring seat 15. A plurality of inclined guide rods 16 are arranged inside the limiting groove 14. The guide rods 16 are movable through 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 back of the mounting frame 4, and guide blocks are provided at corresponding positions inside the corresponding purifier 1.

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

[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. Gear 2 23 is 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. Figure 2 Gear 2 23 is connected to the upper left gear 1 22 through two identical transmission gears, and gear 2 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 direction of roller 1 2 and roller 2 5 meets 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. Gear 2 23 and shaft 11 rotate at the same time, and all rollers 1 2 and roller 2 5 rotate. The raw material is poured in from the position of the feed port and first falls between the two upper rollers 2. Magnet 1 3 first performs a magnetic attraction action to adsorb the iron powder on the surface of roller 1 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 pressure is formed at the same time. The magnetic attraction force exists in this process until the iron powder on roller 1 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 away from the center of the circle, and because of the gravity of the iron powder itself, it gradually falls. The falling iron powder raw material will fall on the vibrating screen 9, and the iron powder raw material will be 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 1 2. At this time, the non-iron powder material will fall to the two sides of the purifier 1. As the roller 2 below rotates, 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. The non-iron powder material falls on the guide plate 10 below, and then falls on the two side areas, and finally slides out of the purifier 1 on the inclined surface; when the raw materials not adsorbed by roller 1 2 fall inside the guide box 7, the guide box 7 will sprinkle the raw materials evenly on the right half of the 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 as the 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, thereby realizing the purification of the iron powder.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention.

[0045] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "connected," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on 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 that do not depart 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: The purification machine is equipped with two rollers 1 rotating in opposite directions. A fixed magnet 1 is provided 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. 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 1 is correspondingly provided directly below the two rollers 1, and a fixed non-rotating magnet 1 is provided 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 back to back, and the discharge port is located between the two rollers 1; The re-purification mechanism includes a mounting frame horizontally arranged inside the purifier, with a rotatable roller 2 suspended directly above the mounting frame. The mounting frame includes two left and right areas. The mounting frame is located on one side of the roller 2 and is provided with an area for placing waste, and the mounting frame is located on the other side of the roller 2 and is provided with an area for placing iron powder; a gap is provided between the other side area of the mounting frame and the roller 2; Pour the raw materials in from the feed port and they will first fall between the two upper rollers. Magnet one will first perform magnetic attraction to adsorb the iron powder on the surface of roller one. As the two rollers rotate towards each other, the raw materials will be brought into the position between the two rollers until the iron powder on roller one rotates to a position away from magnet one. The centrifugal force will throw the iron powder purified for the first time to a position away from the center of the circle. The falling iron powder raw materials will fall between the two lower rollers. During the falling process, the gathered iron powder will disperse and be adsorbed on the surface of roller one again. The same non-iron powder material will fall into the interior of the purifier.

2. The electric screen for purifying iron powder according to claim 1, characterized in that: A second fixed magnet is provided inside the second roller. The cross section of the second magnet is semicircular and the length is the same as that of the second roller. The arc surface of the second magnet faces upward and the plane is in a horizontal state.

3. The electric screen for purifying iron powder according to claim 2, characterized in that: A material guide box with a slanted discharge port is provided 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, and a leak-proof leather strip is installed on one side area of the mounting frame, and the leak-proof leather strip is against the surface of 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. The surface of the mounting frame is equipped with a vibration assembly to ensure that the mounting frame and the vibrating screen can move longitudinally. 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.

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 provided 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. The two sides of the vibrating screen are respectively overlapped with the inside of the transverse groove and the limiting groove. The inner wall of the transverse groove is connected to the surface of the vibrating screen through a spring seat. 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 vibrating 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 the 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. 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, and the surface of roller two is sleeved with gear two. 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 slanting direction to the top of the discharge port. The guide plates are located directly below the roller one.

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