Waste circuit board crushed material screening device

Abstract

The utility model discloses a waste circuit board crushed material screening device which comprises an electrostatic screening machine body, a feeding cylinder connected to the top end of the electrostatic screening machine body, discharging guide plates symmetrically connected to the two sides of the bottom end of the electrostatic screening machine body and electrode plates symmetrically installed on the inner wall of the electrostatic screening machine body. A bracket is fixed to the side edge of the feeding cylinder, a feeding guide plate is installed on the bracket in a sliding mode, and the side edge of the feeding guide plate is elastically and telescopically connected with the bracket through a guide rod and a spring. And a conical splitter plate is arranged in the feeding cylinder. The feeding guide plate can continuously shake in the axial direction of the guide rod so that materials can be driven to be evenly discharged, meanwhile, the conical splitter plate can block the materials fed by the feeding guide plate, the materials slide down from the top of the conical splitter plate to the edge, the materials can be further dispersed, and the material feeding efficiency is improved. And the dispersion effect of the materials falling into the electrostatic screening machine body is effectively improved, and then the separation sufficiency between metal and resin is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste circuit board processing and recycling, in particular to a screening device for waste circuit board crushing materials. Background Art

[0002] There are a large number of useful metals in waste circuit boards. If these metals are not recycled secondarily, it will be a waste of resources. Currently, the main operations for recycling metals in waste circuit boards are as follows: First, the circuit boards are crushed to form a powdery mixture of metal and resin, and then an electrostatic screening device is used to effectively separate the metal and resin. The electrostatic screening device mainly utilizes the difference in electrical properties between metal materials and non-metal materials in a high-voltage electric field to achieve the separation purpose.

[0003] The existing electrostatic screening devices have the following deficiencies in the use process: When the crushed mixed materials are put into the electrostatic screening device, they are not easily dispersed and tend to pile up and fall in a heap. They fall rapidly in the electric field, resulting in incomplete separation of metal materials and non-metal materials and poor separation effect.

[0004] Therefore, we propose a screening device for waste circuit board crushing materials to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a screening device for waste circuit board crushing materials to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A screening device for waste circuit board crushing materials includes an electrostatic screening machine body, a feed cylinder connected to the top end of the electrostatic screening machine body, discharge guide plates symmetrically connected to both sides of the bottom end of the electrostatic screening machine body, and electrode plates symmetrically installed on the inner wall of the electrostatic screening machine body. A bracket is fixed to the side of the feed cylinder, and a feed guide plate is slidably installed on the bracket. The side of the feed guide plate is elastically telescopically connected to the bracket through a guide rod and a spring to drive the feed guide plate to shake along the axial direction of the guide rod for uniform feeding.

[0008] A conical diversion plate is arranged in the feed cylinder. A first bevel gear is installed below the conical diversion plate through a central rod, and a second bevel gear is meshed and connected to the side of the first bevel gear. A rotating rod is connected to the center of the second bevel gear, and one end of the rotating rod passing through the outer shell of the electrostatic screening machine body is connected to a motor. When the conical diversion plate rotates, it drives the crushed materials to be dispersed and fed.

[0009] In a further embodiment, a first synchronous pulley is coaxially fixed at the connection between the rotating rod and the motor. A roller is rotatably installed at the bottom of the feeding guide plate. A cam is closely attached to the side of the roller, and the cam is rotatably connected to the bracket. The end of the cam is connected to a second synchronous pulley, and a synchronous belt is sleeved between the second synchronous pulley and the first synchronous pulley.

[0010] In a further embodiment, both ends of the roller are thick and the middle is thin, and the edge of the cam is clamped in the middle of the roller.

[0011] In a further embodiment, a notch groove is formed at the upper port of the feeding cylinder, and the feeding guide plate is inserted into the notch groove.

[0012] In a further embodiment, the feeding cylinder and the electrostatic screening machine body are transitioned through a conical section. The outer diameter of the bottom port of the conical diversion plate is larger than the inner diameter of the feeding cylinder and smaller than the inner diameter of the conical section.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model is provided with a feeding guide plate which can reciprocate along the axial direction of the guide rod under the elastic action of the spring and the guide rod, so that the feeding guide plate continuously shakes, facilitating the uniform feeding of materials and reducing the situation of materials piling up during feeding.

[0015] The present utility model is provided with a conical diversion plate which can block the materials input by the feeding guide plate to prevent the materials from directly falling. The materials slide from the top of the conical diversion plate to the edge, facilitating the dispersion of the materials. When the conical diversion plate rotates, it can further disperse the sliding materials under the action of centrifugal force, effectively improving the dispersion effect of the materials when falling into the electrostatic screening machine body, and then improving the sufficiency of the separation between the metal and the resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a half-sectional structural diagram of the present utility model;

[0018] Figure 3 is a schematic installation structure diagram of the feeding guide plate and the feeding cylinder of the present utility model;

[0019] Figure 4 is a partial sectional structural diagram of the installation of the feeding guide plate and the feeding cylinder of the present utility model.

[0020] In the figure: 1. Static screening machine body; 2. Feed cylinder; 21. Notch groove; 3. Discharge guide plate; 4. Electrode plate; 5. Bracket; 6. Feed guide plate; 7. Guide rod; 8. Spring; 9. Conical shunt plate; 10. Central rod; 11. First bevel gear; 12. Second bevel gear; 13. Rotating rod; 14. Motor; 15. First synchronous pulley; 16. Synchronous belt; 17. Second synchronous pulley; 18. Roller; 19. Cam. Specific embodiments

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation to the present invention. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figure 1-2, a screening device for waste circuit board crushing materials, including the electrostatic screening machine body 1. The electrostatic screening machine body 1 is in a cuboid structure. The top of the electrostatic screening machine body 1 is connected to the feeding cylinder 2, and a conical body is used for transition between the feeding cylinder 2 and the electrostatic screening machine body 1. The two sides at the bottom of the electrostatic screening machine body 1 are connected to inclined discharge guide plates 3. The inner bottom of the electrostatic screening machine body 1 is in a pyramid shape, so that the separated materials can flow along the inclined surface of the pyramid to the discharge guide plates 3. A group of electrode plates 4 are symmetrically arranged on the inner wall of the electrostatic screening machine body 1. One of the two electrode plates 4 is a positive electrode and the other is a negative electrode. After being energized, an electric field is formed between the two electrode plates 4. When the materials pass through the electric field, metal particles and non-metal particles are quickly polarized in the electric field. Thus, the metal particles are positively charged and attracted by the negative electrode, and the non-metal particles are negatively charged and attracted by the positive electrode, so as to carry out sorting. In order to improve the sorting efficiency, a bracket 5 is fixed on the side of the feeding cylinder 2, and a feeding guide plate 6 is slidably installed on the bracket 5. One end of a guide rod 7 is fixed to the side of the feeding guide plate 6. The other end of the guide rod 7 passes through the vertical side plate of the bracket 5, and a spring 8 is sleeved around the guide rod 7 between the side plate and the side of the feeding guide plate 6, so as to use the spring 8 to help the feeding guide plate 6 reset. When the feeding guide plate 6 shakes along the axial direction of the guide rod 7, it can drive the materials in the feeding guide plate 6 to be evenly dispersed and fall into the inside of the feeding cylinder 2.

[0025] Please refer to Figure 3-4 , in order to prevent the materials from leaking out from the corners when the feeding guide plate 6 shakes, a notch groove 21 is opened at the upper port of the feeding cylinder 2, and the feeding guide plate 6 is inserted into the inside of the notch groove 21, so that the feeding guide plate 6 shakes in the notch groove 21, keeping the materials at the corners of the discharge port of the feeding guide plate 6 always inside the feeding cylinder 2, thus effectively preventing material leakage.

[0026] Please refer to Figure 3-4 , in order to further improve the sorting effect of the materials, a conical diversion plate 9 is arranged inside the feeding cylinder 2. A central rod 10 is fixed below the conical diversion plate 9. The bottom end of the central rod 10 is rotatably connected to the pyramid plate at the inner bottom of the electrostatic screening machine body 1. A first bevel gear 11 is fixed on the outer wall of the central rod 10. A second bevel gear 12 is meshed and connected to the side of the first bevel gear 11. A rotating rod 13 is connected to the axis center of the second bevel gear 12. The rotating rod 13 passes through the shell of the electrostatic screening machine body 1 and is rotatably connected thereto. The end of the rotating rod 13 far from the second bevel gear 12 is connected to the output shaft of the motor 14 through a coupling. When the motor 14 is started, it first drives the rotating rod 13 and the second bevel gear 12 to rotate, and then drives the first bevel gear 11 and the central rod 10 to rotate by means of meshing transmission, so as to drive the conical diversion plate 9 to rotate, making the materials falling on the top of the conical diversion plate 9 evenly disperse along the conical surface and fly around downward under the action of centrifugal force, facilitating the separated metal materials and non-metal materials to be attracted by different electrodes.

[0027] Please refer to Figure 2 , there is a transition through a conical section between the feeding cylinder 2 and the electrostatic screening machine body 1, and the outer diameter of the bottom port of the conical diversion plate 9 is larger than the inner diameter of the feeding cylinder 2, and the outer diameter of the bottom port of the diversion plate 9 is smaller than the inner diameter of the conical section, so that when the material passes through the gap between the feeding cylinder 2 and the conical diversion plate 9, it can slide down smoothly, and the material scattered from the conical diversion plate 9 can impact on the inner wall of the conical section and then fall into the electric field.

[0028] Please refer to Figure 3-4 , in order to facilitate the synchronous control of the rotating conical diversion plate 9 and the shaking feeding guide plate 6, a synchronous pulley one 15 is coaxially fixed at the connection between the rotating rod 13 and the motor 14. A mounting plate is fixed at the bottom of the feeding guide plate 6, and a roller 18 is rotatably mounted at the bottom of the mounting plate. The side of the roller 18 is closely attached to a cam 19, and one end of the cam 19 is rotatably connected to a mounting plate, and this mounting plate is fixed to the bracket 5. The other end of the cam 19 is connected to a synchronous pulley two 17, and a synchronous belt 16 is sleeved between the synchronous pulley two 17 and the synchronous pulley one 15. When the motor 14 drives the rotating rod 13 to rotate, it can also drive the synchronous pulley one 15 to rotate. The synchronous belt 16 and the synchronous pulley two 17 drive the cam 19 to rotate. When the cam 19 rotates, it squeezes the roller 18, and then drives the feeding guide plate 6 to shake by squeezing the roller 18. In order to ensure the stability of the fit between the roller 18 and the cam 19, the two ends of the roller 18 are thick, the middle is thin, and the middle is recessed inward, and the edge of the cam 19 just fits into the middle recess of the roller 18, so as to prevent the two from being misaligned and offset during the extrusion process.

[0029] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0030] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A waste circuit board crushing material screening device, comprising an electrostatic screening machine body (1), a feed cylinder (2) connected to the top of the electrostatic screening machine body (1), a discharge guide plate (3) symmetrically connected to both sides of the bottom of the electrostatic screening machine body (1), and an electrode plate (4) symmetrically installed on the inner wall of the electrostatic screening machine body (1), characterized in that: A bracket (5) is fixed to the side of the feed barrel (2), and a feed guide plate (6) is slidably mounted on the bracket (5). The side of the feed guide plate (6) is elastically telescopically connected to the bracket (5) via a guide rod (7) and a spring (8) to drive the feed guide plate (6) to shake along the axial direction of the guide rod (7) to uniformly discharge the material; A conical diverter plate (9) is provided in the feed barrel (2), a bevel gear 1 (11) is installed below the conical diverter plate (9) through a center rod (10), and the side of the bevel gear 1 (11) is meshingly connected with a bevel gear 2 (12), a rotating rod (13) is connected to the axis of the bevel gear 2 (12), and one end of the rotating rod (13) that passes through the outer shell of the electrostatic screening machine body (1) is connected to a motor (14), and when the conical diverter plate (9) rotates, it drives the crushed materials to be dispersed and discharged.

2. The device for screening scrapped circuit boards according to claim 1, characterized in that: A synchronous wheel 1 (15) is coaxially fixed at the connection between the rotating rod (13) and the motor (14), a roller (18) is rotatably mounted at the bottom of the feed guide plate (6), a cam (19) is tightly attached to the side of the roller (18), and the cam (19) is rotatably connected to the bracket (5), a synchronous wheel 2 (17) is connected to the end of the cam (19), and a synchronous belt (16) is sleeved between the synchronous wheel 2 (17) and the synchronous wheel 1 (15).

3. The device for screening scrapped circuit boards according to claim 2, characterized in that: The roller (18) is thick at both ends and thin in the middle, and the edge of the cam (19) is embedded in the middle of the roller (18).

4. The device for screening scrapped circuit boards according to claim 1, characterized in that: The upper end of the feed barrel (2) is provided with a notch groove (21), and the feed guide plate (6) is inserted into the notch groove (21).

5. The device for screening scrapped circuit boards according to claim 1, characterized in that: The feed barrel (2) and the electrostatic screening machine body (1) are transitioned via a vertebral segment, and the outer diameter of the bottom port of the conical diverter plate (9) is larger than the inner diameter of the feed barrel (2) and smaller than the inner diameter of the vertebral segment.

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