Vibrating type fine particle eddy current sorting device

Abstract

The utility model provides a vibration type fine particle eddy current sorting device. The vibration type fine particle eddy current sorting device mainly comprises an excitation mechanism, a sorting groove, a magnetic roller, a conductive particle early collecting plate, a conductive particle baffle, a product partition plate, a conductive product collecting groove and a non-conductive product collecting groove. Through research, it is proposed that the direction of eddy current force borne by the conductive particles is forward in the tangential direction of the circle (the circle center is in the axis of the magnetic roller) of the particles rather than in the radial direction of the magnetic roller and back to the magnetic roller, so that the particles fly out in the second quadrant of the magnetic field of the magnetic roller; according to the arrangement of the conductive particle early collection plate, conductive particles which take off in the second quadrant but do not fly rightwards for some reason are recovered as soon as possible, and the right end of the separation groove bottom plate and the upper end of the non-conductive product guide-out plate are connected into a whole to improve the rigidity of the separation groove bottom plate and the non-conductive product guide-out plate. The separation area section of the bottom plate of the separation groove can be thinner, so that the eddy current force borne by the conductive particles is larger, and the separation effect is improved.

Description

Technical Field

[0001] The utility model belongs to the field of solid particle separation, in particular to a vibration type fine particle eddy current sorting device. Background Art

[0002] Eddy current separation has been widely used in the separation of electronic waste, but the recovery effect of fine metal particles is not ideal. The invention patent (application number 201510258557.X) "Small fire scene electrical appliance melt separation machine" (using eddy current separation) can separate conductive particles larger than 0.5mm. If smaller conductive particles are separated, it will be helpful to analyze the cause of the fire. In addition, it needs to be small in size, light in weight and good in separation, that is, the separation efficiency must be high.

[0003] Furthermore, the dominant guiding idea so far is that the eddy current force on the conductive particles is in the radial direction of the magnetic roller and away from the magnetic roller. This understanding makes the structure of the existing eddy current separator unreasonable. Our research believes that the direction of the eddy current force is in the tangential direction of the magnetic roller, and based on this understanding, we proposed an eddy current separator with a new structure.

[0004] The utility model provides a vibration type fine particle eddy current sorting device to solve the above problem. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a vibration type fine particle eddy current sorting device to solve the above problems.

[0006] It mainly includes an exciting mechanism, a sorting trough, a magnetic roller, a conductive particle early collection plate, a conductive particle baffle, a product separator, a conductive product collecting trough and a non-conductive product collecting trough. The vibration trough body of the exciting mechanism is rigidly connected to the sorting trough. The magnetic roller is located below the right part of the bottom plate of the sorting trough. A non-conductive product guide plate is arranged at the right end of the sorting trough. A conductive particle early collection plate is arranged at the upper right of the non-conductive product guide plate. A product separator is arranged on the right side of the non-conductive product guide plate. A conductive particle baffle is arranged on the side of the product separator away from the non-conductive product guide plate. A non-conductive product collecting trough is arranged below the non-conductive product guide plate and the product separator. A conductive product collecting trough is arranged below the product separator and the conductive particle baffle.

[0007] Further: the vibration excitation mechanism includes a base, a left leaf spring, a right leaf spring, an electromagnet and a vibration trough.

[0008] Further: the sorting trough also includes a front vertical plate and a rear vertical plate, the front vertical plate and the rear vertical plate are respectively vertically connected to the two sides of the sorting trough bottom plate, a plurality of longitudinal reinforcing ribs are arranged on the sorting trough bottom plate, the longitudinal reinforcing ribs include reinforcing rib one, reinforcing rib two and reinforcing rib three, transverse tensioning ribs are installed on the sorting trough, the two ends of the transverse tensioning ribs are respectively perpendicular to the front vertical plate and the rear vertical plate, the left ends of the front vertical plate and the rear vertical plate are both provided with holes for rigid connection with the vibration trough body, the thickness of the sorting trough bottom plate is different in different sections of the forward direction of the selected material, one end of the sorting trough bottom plate is arranged directly above the magnetic roller, and the thickness of the sorting trough bottom plate close to the magnetic roller gradually decreases, the longitudinal reinforcing ribs on the sorting trough bottom plate are equidistantly arranged, the end of the sorting trough bottom plate close to the non-conductive product export plate is fixedly connected to the top of the non-conductive product export plate, and the two sides of the non-conductive product export plate are respectively fixedly connected to the side walls of the front vertical plate and the rear vertical plate.

[0009] Furthermore: the permanent magnets on the magnetic roller are made of strong permanent magnetic materials, the magnetic poles exposed on the outer cylindrical surface of the magnetic roller are arranged alternately with magnetic N poles and magnetic S poles along the circumferential direction, and the magnetic roller rotates in a clockwise direction.

[0010] Further: the horizontal height of the side of the conductive particle early collection plate close to the magnetic roller is higher than the horizontal height close to one end of the conductive particle baffle, the horizontal height of the end of the conductive particle early collection plate close to the magnetic roller is close to the horizontal height of the top of the magnetic roller, the other end of the conductive particle early collection plate extends to the right side of the product separator plate, and the conductive particle early collection plate is made of non-conductive material.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The conductive particle early collection plate provided in the utility model can early collect the conductive particles that take off from the second quadrant of the magnetic field of the magnetic roller but do not fly far to the right for some reason, thereby improving the separation effect.

[0013] 2. The upper end of the non-conductive product outlet plate in the utility model supports the right end of the bottom plate of the sorting trough, which makes the thickness of the thinnest bottom plate on the far right of the bottom plate of the sorting trough thinner, so that the selected material is closer to the magnetic roller so that the conductive particles are subjected to a greater eddy current force, and the direction of the eddy current force here is suitable for separation. Compared with the common conveyor belt eddy current separator, it omits the steering wheel of the conveyor belt and other devices, so it has a simple structure, light weight, and a reduced longitudinal length, resulting in a small volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1It is a schematic diagram of the overall structure of the utility model, and only the main components are drawn. In the figure, only the approximate positions of the sorting tank bottom plate and the non-conductive product outlet plate are drawn for the sorting tank, so as to indicate the relative positions of the main components;

[0015] Figure 2 This is a front view of the sorting tank. The dotted line AB indicates the approximate position of the bottom plate of the sorting tank, the curved dotted line BDE indicates the approximate position of the non-conductive product outlet plate, and the dotted circle indicates the position of the magnetic roller. The longitudinal reinforcement ribs and transverse tension ribs of the sorting tank are not drawn in the figure;

[0016] Figure 3 yes Figure 2 The KK-axis sectional view of the sorting trough in FIG. 1 does not show the transverse reinforcement of the sorting trough;

[0017] Figure 4 It is a partial enlarged schematic diagram of the sorting area. The front and rear vertical plates of the sorting trough are cut away in the figure, and the longitudinal reinforcement ribs and transverse tensioning ribs of the sorting trough are not drawn in the figure.

[0018] In the figure:

[0019] 1. Vibration mechanism; 11. Machine base; 12. Left leaf spring; 13. Vibration tank; 14. Electromagnet; 15. Right leaf spring;

[0020] 2. Sorting trough; 21. Non-conductive product outlet plate; 22. Rear vertical plate; 23. Sorting trough bottom plate; 24. Reinforcement rib 1; 25. Reinforcement rib 2; 26. Reinforcement rib 3; 27. Front vertical plate;

[0021] 3. Magnetic roller;

[0022] 4. Conductive particle early harvest board;

[0023] 5. Conductive particle baffle;

[0024] 6. Product separator;

[0025] 7. Conductive product collection tank;

[0026] 8. Non-conductive product collection trough. DETAILED DESCRIPTION

[0027] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0028] like Figure 1-4As shown, the utility model provides a vibrating fine particle eddy current sorting device, comprising a vibration mechanism 1, a sorting trough 2, a magnetic roller 3, a conductive particle early collection plate 4, a conductive particle baffle 5, a product separator 6, a conductive product collecting trough 7 and a non-conductive product collecting trough 8, the vibration trough body 13 of the excitation mechanism 1 is rigidly connected to the sorting trough 2, the magnetic roller 3 is located below the right part of the bottom plate 23 of the sorting trough, a non-conductive product lead-out plate 21 is arranged at the right end of the sorting trough 2, a conductive particle early collection plate 4 is arranged at the upper right side of the non-conductive product lead-out plate 21, a product separator 6 is arranged on the right side of the non-conductive product lead-out plate 21, a conductive particle baffle 5 is arranged on the side of the product separator 6 away from the non-conductive product lead-out plate 21, a non-conductive product collecting trough 8 is arranged below the non-conductive product lead-out plate 21 and the product separator 6, and a conductive product collecting trough 7 is arranged below the product separator 6 and the conductive particle baffle 5.

[0029] Among them, the vibration mechanism 1 includes a base 11, a left leaf spring 12, a right leaf spring 15, an electromagnet 14 and a vibration trough body 13. The vibration generated by the vibration mechanism 1 can make the selected material evenly distributed on the sorting trough bottom plate 23 of the sorting trough 2 and jump up and down to move to the right at a uniform speed.

[0030] The sorting trough 2 further comprises a front vertical plate 27 and a rear vertical plate 22, the front vertical plate 27 and the rear vertical plate 22 are respectively vertically connected to the two sides of the sorting trough bottom plate 23, a plurality of longitudinal reinforcing ribs are arranged on the sorting trough bottom plate 23, the longitudinal reinforcing ribs include a reinforcing rib 1 24, a reinforcing rib 2 25 and a reinforcing rib 3 26, a transverse reinforcing rib is installed on the sorting trough 2, the two ends of the transverse reinforcing rib are respectively vertical to the front vertical plate 27 and the rear vertical plate 22, and the transverse reinforcing rib of the sorting trough 2 is used to strengthen the sorting The rigidity of the trough 2 is improved. The left ends of the front vertical plate 27 and the rear vertical plate 22 are provided with holes for rigid connection with the vibrating trough body 13. The thickness of the bottom plate 23 of the sorting trough is different in different sections of the forward direction of the selected material. The thickness of the bottom plate 23 of the sorting trough on the right side of the dotted line mn is thinner than that on the left side of the dotted line mn, so that the material can approach the magnetic roller 3. One end of the bottom plate 23 of the sorting trough is arranged directly above the magnetic roller 3, and the thickness of the bottom plate 23 of the sorting trough close to the magnetic roller 3 gradually decreases, such as Figure 4 The length of the center line of the magnetic roller 3 extending to the right is as small as possible. The right end of the longitudinal reinforcing rib on the sorting trough bottom plate 23 extends to the right side of the Y axis, and the left end extends to the left to a length that exceeds the dotted line mn and is not less than the radius of the magnetic roller 3. The longitudinal reinforcing ribs on the sorting trough bottom plate 23 are arranged equidistantly. One end of the sorting trough bottom plate 23 close to the non-conductive product lead-out plate 21 is fixedly connected to the top of the non-conductive product lead-out plate 21. The two sides of the non-conductive product lead-out plate 21 are respectively fixedly connected to the side walls of the front vertical plate 27 and the rear vertical plate 22. The spacing between the longitudinal reinforcing ribs on the sorting trough bottom plate 23 is based on the premise that when the thinnest section at the right end of the sorting trough bottom plate 23 is deformed during operation, the distance between its lower surface and the magnetic roller 3 is not less than 1.0 mm.

[0031] In order to strengthen the rigidity of the sorting trough 2, transverse reinforcing ribs can be inserted between the longitudinal reinforcing ribs. At this time, a gap is left between the lower end of the transverse reinforcing ribs and the bottom plate 23 of the sorting trough to allow the selected materials to pass through. The longitudinal direction refers to the direction in which the selected materials move forward.

[0032] Among them, the longitudinal reinforcing ribs are not limited to reinforcing rib one 24, reinforcing rib two 25 and reinforcing rib three 26;

[0033] The distance from the lower surface of the thinnest part of the separation tank bottom plate 23 to the magnetic roller 3 is 1.0-1.5 mm.

[0034] The permanent magnets on the magnetic roller 3 are made of strong permanent magnetic materials, and the magnetic poles exposed on the outer cylindrical surface of the magnetic roller 3 are arranged alternately with magnetic N poles and magnetic S poles along the circumferential direction, and the magnetic roller 3 rotates in a clockwise direction.

[0035] Among them, the horizontal height of the side of the conductive particle early collection plate 4 close to the magnetic roller 3 is higher than the horizontal height close to one end of the conductive particle baffle 5, and the other end of the conductive particle early collection plate 4 extends to the right side of the product separator 6. The conductive particle early collection plate 4 is made of non-conductive material, and a vibrator can be installed on the conductive particle early collection plate 4.

[0036] The selected material is fed onto the vibrating trough body 13, moves rightward to the bottom plate 23 of the sorting trough, and then passes rightward over the magnetic roller 3. The conductive particles fly over the product separation plate 6 and enter the conductive product collecting trough 7, completing the sorting.

[0037] Embodiment 1

[0038] Take the "Eddy Current Separator for Electrically Fused Materials at Small Fire Sites" as an example. The diameter of the magnetic roller is 100mm, the length of the magnetic roller is 180mm, and the particle size of the selected material is less than 2mm.

[0039] The vibration requirements of this device are similar to those of the GZV micro electromagnetic vibrating feeder, and can be designed with reference to the relevant information of the latter, such as the national standard "GB10862-1989 GZ electromagnetic vibrating feeder form and basic parameters", the mechanical industry standard "JB / T 2604-1994 electromagnetic vibrating feeder technical conditions") and related monographs. The left leaf spring 12 and the right leaf spring 15 can be made of "GB / T1303.4-2009 epoxy resin glass cloth hard laminate" instead of spring steel.

[0040] The bottom plate 23 of the sorting trough can be cut from "GB / T1303.4-2009 epoxy resin glass cloth hard laminate" of different thicknesses and then bonded into a plate, while allowing one end close to the magnetic roller 3 to be as Figure 4As shown in the stepped shape, the front vertical plate 27 and the rear vertical plate 22 of the sorting trough 2 can be cut from "GB / T1303.4-2009 epoxy resin glass cloth hard laminate" with a thickness of 10 mm. The longitudinal reinforcing ribs can be cut from "GB / T1303.4-2009 epoxy resin glass cloth hard laminate" with a thickness of 4 mm. The non-conductive product outlet plate 21 can be formed by heating and bending a thermoplastic plastic (such as nylon, polycarbonate) plate with a thickness of 3 mm. The transverse tensioning ribs used to ensure the rigidity of the sorting trough 2 can be cut from "GB / T1303.4-2009 epoxy resin glass cloth hard laminate" with a thickness of 10 mm. The various parts are bonded with an adhesive, and local reinforcing ribs can be added near the bonding seam to ensure firm bonding.

[0041] The conductive particle early harvest plate 4, the conductive particle baffle plate 5 and the product partition plate 6 can be made of "GB / T1303.4-2009 epoxy resin glass cloth hard laminate" with a thickness of 5 mm.

[0042] The permanent magnet of the magnetic roller 3 can be made of a neodymium iron boron permanent magnet having a large magnetic energy product.

[0043] If the maximum size of the feed material is 2 mm, the spacing between adjacent longitudinal reinforcing ribs on the sorting trough bottom plate 23 is 20 mm, and the thin bottom plate at the rightmost part of the sorting trough bottom plate 23 ( Figure 4 The thickness of the section on the left and right of the Y axis) is 1.0mm, then the thin bottom plate is regarded as a "beam", and the longitudinal reinforcement ribs are regarded as the "support" of the beam. According to the formula of material mechanics and the simply supported beam calculation, it is assumed that the load from the selected material (including dynamic load) is equivalent to the gravity of a copper plate with a thickness of 2mm and is evenly distributed. At this time, the maximum downward protrusion of the "beam" is less than 1 micron, which does not affect the operation of the equipment.

[0044] In summary, the conductive particles are subject to greater eddy current force due to their proximity to the magnetic roller 3. The material is sorted while vibrating up and down, which reduces the probability and intensity of the conductive particles being blocked from taking off (this is even more important for fine particles). The conductive particles that do not fly far to the right can be recovered in time, thereby improving the separation effect.

[0045] Embodiment 2

[0046] The separation efficiency can also be improved by setting a conductive particle early collection plate 4 on the common "conveyor belt type eddy current separator". That is, the conductive particle early collection plate 4 is higher on the left and lower on the right so that the conductive particles caught by it can move to the right and enter the conductive product collection tank 7. The height of the left end of the conductive particle early collection plate 4 is roughly the same as the height of the highest point of the magnetic roller. Its left end should be moved to the left as much as possible so as not to catch the particles of the non-conductive product. Its right end should go over the product dividing plate 6 to the right for a distance to prevent the conductive particles from falling from the right end of the conductive particle early collection plate 4 into the non-conductive product collection tank 8. A vibrator can be installed on the conductive particle early collection plate 4 to promote the material on it to smoothly move down to the right.

[0047] The specific embodiments disclosed above are only used to help explain the present invention so that those skilled in the art can understand the present invention well. All equivalent designs made according to the present invention patent are within the protection scope of the present invention patent.

[0048] The implementation modes of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A vibrating fine particle eddy current sorting device, mainly comprising an excitation mechanism (1), a sorting tank (2), a magnetic roller (3), a conductive particle early collection plate (4), a conductive particle baffle (5), a product separation plate (6), a conductive product collection tank (7) and a non-conductive product collection tank (8), characterized in that: The vibration trough body (13) of the excitation mechanism (1) is rigidly connected to the sorting trough (2); the magnetic roller (3) is located below the right part of the bottom plate (23) of the sorting trough; a non-conductive product outlet plate (21) is provided at the right end of the sorting trough (2); a conductive particle early collection plate (4) is provided at the upper right of the non-conductive product outlet plate (21); a product separation plate (6) is provided on the right side of the non-conductive product outlet plate (21); a conductive particle baffle (5) is provided on the side of the product separation plate (6) away from the non-conductive product outlet plate (21); a non-conductive product collection trough (8) is provided below the non-conductive product outlet plate (21) and the product separation plate (6); and a conductive product collection trough (7) is provided below the product separation plate (6) and the conductive particle baffle (5).

2. The vibrating fine particle eddy current separation device according to claim 1, characterized in that: The vibration excitation mechanism (1) comprises a machine base (11), a left leaf spring (12), a right leaf spring (15), an electromagnet (14) and a vibration trough (13).

3. The vibrating fine particle eddy current separation device according to claim 1, characterized in that: The sorting trough (2) further comprises a front vertical plate (27) and a rear vertical plate (22), wherein the front vertical plate (27) and the rear vertical plate (22) are respectively vertically connected to the two sides of the sorting trough bottom plate (23), and the sorting trough bottom plate (23) is provided with a plurality of longitudinal reinforcing ribs, wherein the longitudinal reinforcing ribs comprise reinforcing rib one (24), reinforcing rib two (25) and reinforcing rib three (26). The sorting trough (2) is provided with transverse tensioning ribs, wherein the two ends of the transverse tensioning ribs are respectively vertical to the front vertical plate (27) and the rear vertical plate (22), and the left ends of the front vertical plate (27) and the rear vertical plate (22) are provided with holes for connecting with the vibration trough body ( 13) rigidly connected, the thickness of the sorting trough bottom plate (23) is different at different sections of the forward direction of the selected materials, one end of the sorting trough bottom plate (23) is arranged directly above the magnetic roller (3), and the thickness of the sorting trough bottom plate (23) close to the magnetic roller (3) gradually decreases, the longitudinal reinforcing ribs on the sorting trough bottom plate (23) are arranged at equal intervals, the end of the sorting trough bottom plate (23) close to the non-conductive product outlet plate (21) is fixedly connected to the top of the non-conductive product outlet plate (21), and the two sides of the non-conductive product outlet plate (21) are respectively fixedly connected to the side walls of the front vertical plate (27) and the rear vertical plate (22).

4. The vibrating fine particle eddy current separation device according to claim 1, characterized in that: The permanent magnets on the magnetic roller (3) are made of strong permanent magnetic material, the magnetic poles exposed on the outer cylindrical surface of the magnetic roller (3) are arranged alternately with magnetic N poles and magnetic S poles along the circumferential direction, and the magnetic roller (3) rotates in a clockwise direction.

5. The vibrating fine particle eddy current separation device according to claim 1, characterized in that: The horizontal height of the side of the conductive particle early collection plate (4) close to the magnetic roller (3) is higher than the horizontal height of one end close to the conductive particle baffle (5); the horizontal height of one end of the conductive particle early collection plate (4) close to the magnetic roller (3) is close to the horizontal height of the top of the magnetic roller (3); the other end of the conductive particle early collection plate (4) extends to the right side of the product separation plate (6); and the conductive particle early collection plate (4) is made of non-conductive material.

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