Waste PCB copper powder multistage screening device

Abstract

The utility model provides a waste PCB copper powder multistage screening device which comprises a screening box, a feeding port and a discharging port are fixedly formed in the screening box, a first screening plate and a second screening plate are movably arranged in the screening box, and spring telescopic rods are fixedly arranged on the two sides of the first screening plate and the two sides of the second screening plate correspondingly. According to the device, the impurity removal assembly is arranged, a splitter plate can adsorb and remove iron impurities, an electric telescopic rod is arranged to drive a movable screw rod to be inserted into rotating grooves in second bevel gears on the two sides, the movable screw rod can rotate in different directions, and therefore the impurity removal effect is improved. According to the copper powder screening device, the first screening plate and the second screening plate are arranged, so that the pressing roller is driven to flatten copper powder on the first screening plate in a reciprocating mode, the copper powder can be evenly distributed, knocking rods are arranged to knock the screening plates at the same time, the screening plates are prevented from being blocked, a second knocking rod can knock the material guiding plate, the copper powder is prevented from being attached to and remaining on the material guiding plate, and the screening and discharging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of copper powder production and processing, in particular to a multi-stage screening device for copper powder of waste PCB boards. Background Art

[0002] With the popularization of electronic products and the acceleration of the replacement speed, a large number of waste PCB boards (printed circuit boards) are generated. These waste PCB boards contain a large amount of copper powder and other valuable metals, but they may also contain harmful substances. Therefore, it has become an important topic at present to effectively treat waste PCB boards, realize the recycling of resources such as copper powder, and reduce environmental pollution. Copper, as an important metal resource, has a wide range of applications in the fields of electronics, construction, and transportation. Recycling copper powder from waste PCB boards can not only save natural resources and reduce production costs, but also help promote the development of a circular economy. Therefore, it is of great significance to develop an efficient technology for recycling copper powder from waste PCB boards. Screening technology is a commonly used physical separation method in the field of resource recovery. The material is graded by screens of different particle sizes to achieve effective separation of particles of different particle sizes.

[0003] Publication No. "CN218554766U" provides a multi-stage screening device, including a base, a screening box and a sound insulation sleeve; wherein, columns are arranged at the four corners of the top of the base, and a processing table is arranged on the top of the columns; the screening box is arranged on the top of the processing table, a feed port is arranged at the top of the screening box, a discharge port is arranged at the bottom of the screening box, a curved frame is arranged at the top of the feed port, a cylinder is arranged at the bottom of the curved frame, a mounting plate is arranged at the bottom of the cylinder, and a top pin is arranged at the bottom of the mounting plate; the sound insulation sleeve is arranged on the outer wall of the screening box, a honeycomb sound insulation layer is arranged on the inner side of the sound insulation sleeve, and a connecting layer is arranged on the inner side of the honeycomb sound insulation layer. The utility model has a reasonable design, and can prevent the feed port from being blocked during use, while having good sound insulation and noise reduction effects.

[0004] However, the above technical solutions and the prior art have the following defects:

[0005] Although the above device can prevent the feed port from being blocked during use and has good sound insulation and noise reduction effects, many iron impurities may be mixed into the waste PCB boards during the screening process, thereby affecting the screening of copper powder. Moreover, during the screening process, the screen will often reduce the screening efficiency due to the blockage of the screening port after working for a long time. Utility Model Content

[0006] The utility model aims to provide a multi-stage screening device for copper powder of waste PCB boards to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A multi-stage screening device for copper powder of waste PCB boards, comprising a screening box, wherein a feed port and a discharge port are fixedly arranged on the screening box, a first screening plate and a second screening plate are movably arranged in the screening box, spring telescopic rods are fixedly arranged on both sides of the first screening plate and the second screening plate, and the spring telescopic rods are fixedly connected to the inner wall of the screening box through a fixing block;

[0009] An impurity removal component, which is arranged inside the screening box and is used to adsorb and clean iron impurities in the copper powder;

[0010] A flattening component, which is arranged inside the screening box and is used to flatten the surface of the copper powder so that the copper powder is evenly distributed on the first screening plate;

[0011] A knocking component is arranged inside the screening box and is used to knock each component to prevent copper powder from clogging or adhering.

[0012] Preferably, the impurity removal component includes a diverter plate fixedly mounted on the inner wall of the screening box, the diverter plate is arranged directly below the feed port, the surface of the diverter plate is made of magnetic material, a rotating plate is symmetrically arranged on the inner wall of the screening box, one side of the rotating plate passes through the outer wall of the screening box and is fixedly connected to the driving motor, and the driving motors on both sides rotate in opposite directions.

[0013] Preferably, the flattening assembly includes a mounting plate symmetrically fixed on the outer wall of the screening box, a first bevel gear is rotatably arranged on the mounting plate, a second bevel gear is symmetrically rotatably arranged on the outer wall of the screening box, the first bevel gear and the second bevel gear are meshed with each other, a moving screw is movably arranged in the screening box, a moving block is threadedly sleeved on the moving screw, a guide rod is fixedly arranged in the screening box, a moving block is movably sleeved on the guide rod, and a pressure roller is rotatably arranged between the moving blocks on both sides.

[0014] Preferably, both ends of the movable screw can move within the inner walls of the screening box on both sides, a rotation groove is opened in the second bevel gear, and the movable screw can be inserted into the rotation groove, and an electric telescopic rod is fixedly provided on one side of the mounting plate, and the electric telescopic rod is rotationally connected to the movable screw.

[0015] Preferably, the knocking assembly includes a knocking rod symmetrically and rotatably arranged on the inner wall of the screening box, the knocking rod is arranged between the first screening plate and the second screening plate, a material guide plate is fixedly and symmetrically arranged inside the screening box, a second knocking rod is arranged below the material guide plate, and the second knocking rod is rotatably arranged on the inner wall of the screening box.

[0016] Preferably, the second knocking rod is rotationally connected to the knocking rod via a transmission belt, the knocking rod is rotationally connected to the first bevel gear via a second transmission belt, and the first bevel gear is rotationally connected to the drive motor via a third transmission belt.

[0017] Preferably, the screening diameter of the first screening plate is 1 mm larger than the screening diameter of the second screening plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The utility model provides an impurity removal component, which can adsorb the iron impurities in the copper powder through the diverter plate, and the rotating plate beats the copper powder, so that the copper powder is lifted up and contacts the diverter plate again, which can make the diverter plate have a better adsorption effect on the iron impurities, and also make the copper powder evenly scattered on the first screening plate.

[0020] 2. The utility model provides a flattening assembly, which can drive the movable screw to be inserted into the rotating groove in the second bevel gear on both sides through the electric telescopic rod, so that the movable screw can rotate in different directions, thereby driving the pressure roller to reciprocate and flatten the copper powder on the first screening plate, so that the copper powder can be evenly distributed on the first screening plate, thereby improving the screening effect.

[0021] 3. By setting a knocking component, the utility model can knock the first screening plate and the second screening plate at the same time through the knocking rod to prevent the screening plate from being blocked. At the same time, the second knocking rod can knock the guide plate to prevent the copper powder from adhering to the guide plate and remaining, thereby improving the screening and feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the utility model;

[0024] Figure 3 It is a three-dimensional schematic diagram of the back structure of the utility model;

[0025] Figure 4 It is a three-dimensional schematic diagram of the internal structure of the back side of the utility model;

[0026] Figure 5 It is a three-dimensional schematic diagram of the structure of the impurity removal component of the utility model;

[0027] Figure 6 It is a three-dimensional schematic diagram of the flattening component structure of the utility model;

[0028] Figure 7 It is a three-dimensional schematic diagram of the striking component structure of the utility model;

[0029] Figure 8 For the utility model Figure 6 Enlarged schematic diagram of point A inside.

[0030] In the figure: 1. screening box; 2. feed inlet; 3. discharge outlet; 4. first screening plate; 5. second screening plate; 6. spring telescopic rod; 7. fixed block; 8. diverter plate; 9. rotating plate; 10. driving motor; 11. mounting plate; 12. first bevel gear; 13. second bevel gear; 14. moving screw; 15. moving block; 16. guide rod; 17. pressure roller; 18. rotating groove; 19. electric telescopic rod; 20. knocking rod; 21. guide plate; 22. second knocking rod; 23. transmission belt; 24. second transmission belt; 25. third transmission belt. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figure 1-8 , the utility model provides a technical solution:

[0033] Embodiment 1:

[0034] A multi-stage screening device for copper powder of waste PCB boards, comprising a screening box 1, on which a feed port 2 and a discharge port 3 are fixedly arranged, a first screening plate 4 and a second screening plate 5 are movably arranged in the screening box 1, spring telescopic rods 6 are fixedly arranged on both sides of the first screening plate 4 and the second screening plate 5, the spring telescopic rods 6 are fixedly connected to the inner wall of the screening box 1 through a fixing block 7, and the screening diameter of the first screening plate 4 is 1 mm larger than the screening diameter of the second screening plate 5;

[0035] In this embodiment, the first screening plate 4 and the second screening plate 5 can perform multi-stage screening on the copper powder, so that the screened copper powder is finer and has less impurities. The arrangement of the spring telescopic rod 6 and the fixed block 7 can make the first screening plate 4 and the second screening plate 5 vibrate when being struck;

[0036] An impurity removal component is arranged inside the screening box 1 and is used to adsorb and clean the iron impurities in the copper powder;

[0037] A flattening component is arranged inside the screening box 1 and is used to flatten the surface of the copper powder so that the copper powder is evenly distributed on the first screening plate 4;

[0038] A knocking component is arranged inside the screening box 1 and is used to knock each component to prevent copper powder from clogging or adhering.

[0039] Embodiment 2:

[0040] On the basis of the first embodiment, this embodiment describes one of the implementable structures of the impurity removal component, the impurity removal component includes a diverter plate 8 fixedly arranged on the inner wall of the screening box 1, the diverter plate 8 is arranged just below the feed port 2, the surface of the diverter plate 8 is made of magnetic material, a rotating plate 9 is symmetrically arranged on the inner wall of the screening box 1, one side of the rotating plate 9 penetrates the outer wall of the screening box 1 and is fixedly connected to the drive motor 10, and the drive motors 10 on both sides rotate in opposite directions;

[0041] In this embodiment, the driving motor 10 drives the rotating plates 9 on both sides to rotate, and the rotating plates 9 on both sides rotate relatively, so that the falling copper powder is slapped onto the diverter plate 8, so that the copper powder contacts the diverter plate 8 for adsorption and impurity removal, and the diverter plate 8 diverts and guides the copper powder to the rotating plates 9 on both sides.

[0042] Embodiment three:

[0043] On the basis of Example 1, this example describes one of the implementable structures of the flattening assembly, and the flattening assembly includes a mounting plate 11 symmetrically fixedly arranged on the outer wall of the screening box 1, a first bevel gear 12 is rotatably arranged on the mounting plate 11, a second bevel gear 13 is symmetrically rotatably arranged on the outer wall of the screening box 1, the first bevel gear 12 and the second bevel gear 13 are meshed with each other, a moving screw 14 is movably arranged in the screening box 1, a moving block 15 is threadedly sleeved on the moving screw 14, a guide rod 16 is fixedly arranged in the screening box 1, a moving block 15 is movably sleeved on the guide rod 16, and a pressure roller 17 is rotatably arranged between the moving blocks 15 on both sides.

[0044] The two ends of the movable screw 14 can move in the inner walls of the screening box 1 on both sides. A rotation groove 18 is provided in the second bevel gear 13. The movable screw 14 can be inserted into the rotation groove 18. An electric telescopic rod 19 is fixedly provided on one side of the mounting plate 11. The electric telescopic rod 19 is rotatably connected to the movable screw 14.

[0045] In this embodiment, the driving motor 10 drives the first bevel gear 12 to rotate through the third transmission belt 25, and the first bevel gear 12 drives the second bevel gear 13 meshing therewith to rotate. When the moving screw 14 is inserted into the rotation groove 18 of the second bevel gear 13 on one side under the action of the electric telescopic rod 19, the other end of the moving screw 14 does not contact the rotation groove 18 on the other side, and the moving screw 14 can move in the rotation groove 18. At the same time, the friction generated in the rotation groove 18 can drive the moving screw 14 to rotate. The electric telescopic rod 19 can be set to timed extension to enable the moving screw 14 to achieve the effect of automatic forward and reverse rotation. The moving screw 14 can drive the pressure roller 17 to flatten the copper powder on the first screening plate 4.

[0046] Embodiment 4:

[0047] On the basis of the first embodiment, this embodiment describes one of the implementable structures of the knocking assembly, the knocking assembly includes a knocking rod 20 symmetrically rotatably arranged on the inner wall of the screening box 1, the knocking rod 20 is arranged between the first screening plate 4 and the second screening plate 5, the screening box 1 is fixedly and symmetrically provided with a guide plate 21, a second knocking rod 22 is arranged below the guide plate 21, and the second knocking rod 22 is rotatably arranged on the inner wall of the screening box 1;

[0048] In this embodiment, the knocking rod 20 can knock the first screening plate 4 and the second screening plate 5 at the same time to prevent the screening plates from being blocked. At the same time, the second knocking rod 22 can knock the material guide plate 21 to prevent copper powder from adhering to and remaining on the material guide plate 21, thereby improving the screening and unloading efficiency.

[0049] Embodiment five:

[0050] The second knocking rod 22 is rotatably connected to the knocking rod 20 via a transmission belt 23, the knocking rod 20 is rotatably connected to the first bevel gear 12 via a second transmission belt 24, and the first bevel gear 12 is rotatably connected to the drive motor 10 via a third transmission belt 25;

[0051] In this embodiment, the transmission belt 23 , the second transmission belt 24 and the third transmission belt 25 can enable the device to complete operation only by driving the motor 10 .

[0052] The drive motor 10 and the electric telescopic rod 19 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art, and the specifications and models of the drive motor 10 and the electric telescopic rod 19 are well known to those skilled in the art and will not be described in detail here.

[0053] Working principle: When it is necessary to perform multi-stage screening on the copper powder of waste PCB boards, turn on the drive motor 10, put the copper powder in from the feed port 2, and adsorb the iron impurities in the copper powder through the diverter plate 8. The drive motor 10 drives the rotating plate 9 to beat the copper powder, and lifts the copper powder to contact the diverter plate 8 again, so that the diverter plate 8 can better adsorb the iron impurities, and the copper powder can also be evenly scattered on the first screening plate 4;

[0054] At this time, the movable screw 14 is driven to be inserted into the rotating groove 18 in the second bevel gear 13 on both sides through the timed extension and retraction function of the electric telescopic rod 19 or the manual operation of the operator, so that the movable screw 14 can rotate in different directions, thereby driving the pressing roller 17 to reciprocate and flatten the copper powder on the first screening plate 4, so that the copper powder can be evenly distributed on the first screening plate 4, thereby improving the screening effect;

[0055] During the copper powder screening and falling process, the knocking rod 20 knocks the first screening plate 4 and the second screening plate 5 at the same time, and the second knocking rod 22 can knock the guide plate 21, which can prevent the copper powder from adhering to the guide plate 21 and improving the screening and feeding efficiency.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for waste PCB copper powder, comprising a screening box (1), characterized in that: The screening box (1) is fixedly provided with a feed inlet (2) and a discharge outlet (3), and a first screening plate (4) and a second screening plate (5) are movably provided in the screening box (1), and spring telescopic rods (6) are fixedly provided on both sides of the first screening plate (4) and the second screening plate (5), and the spring telescopic rods (6) are fixedly connected to the inner wall of the screening box (1) via a fixing block (7); An impurity removal component, which is arranged inside the screening box (1) and is used to adsorb and clean iron impurities in the copper powder; A flattening component, which is arranged inside the screening box (1) and is used to flatten the surface of the copper powder so that the copper powder is evenly distributed on the first screening plate (4); A knocking component is arranged inside the screening box (1) and is used to knock each component to prevent copper powder from clogging or adhering.

2. A multi-stage screening device for waste PCB copper powder according to claim 1, characterized in that: The impurity removal component comprises a diverter plate (8) fixedly arranged on the inner wall of the screening box (1), the diverter plate (8) being arranged directly below the feed port (2), the surface of the diverter plate (8) being made of a magnetic material, a rotating plate (9) being symmetrically arranged on the inner wall of the screening box (1), one side of the rotating plate (9) penetrating the outer wall of the screening box (1) and being fixedly connected to a driving motor (10), and the driving motors (10) on both sides rotating in opposite directions.

3. A multi-stage screening device for waste PCB copper powder according to claim 1, characterized in that: The flattening assembly comprises a mounting plate (11) symmetrically fixedly arranged on the outer wall of the screening box (1), a first bevel gear (12) being rotatably arranged on the mounting plate (11), a second bevel gear (13) being symmetrically rotatably arranged on the outer wall of the screening box (1), the first bevel gear (12) and the second bevel gear (13) being meshed with each other, a movable screw (14) being movably arranged in the screening box (1), a movable block (15) being threadedly sleeved on the movable screw (14), a guide rod (16) being fixedly arranged in the screening box (1), a movable block (15) being movably sleeved on the guide rod (16), and a pressure roller (17) being rotatably arranged between the movable blocks (15) on both sides.

4. A multi-stage screening device for waste PCB copper powder according to claim 3, characterized in that: The two ends of the movable screw rod (14) can move within the inner walls of the screening boxes (1) on both sides; a rotation groove (18) is provided in the second bevel gear (13); the movable screw rod (14) can be inserted into the rotation groove (18); an electric telescopic rod (19) is fixedly provided on one side of the mounting plate (11); the electric telescopic rod (19) is rotationally connected to the movable screw rod (14).

5. A multi-stage screening device for waste PCB copper powder according to claim 1, characterized in that: The knocking assembly comprises a knocking rod (20) symmetrically rotatably arranged on the inner wall of the screening box (1), the knocking rod (20) being arranged between the first screening plate (4) and the second screening plate (5), a material guide plate (21) being fixedly symmetrically arranged inside the screening box (1), a second knocking rod (22) being arranged below the material guide plate (21), and the second knocking rod (22) being rotatably arranged on the inner wall of the screening box (1).

6. A multi-stage screening device for waste PCB copper powder according to claim 5, characterized in that: The second knocking rod (22) is rotationally connected to the knocking rod (20) via a transmission belt (23), the knocking rod (20) is rotationally connected to the first bevel gear (12) via a second transmission belt (24), and the first bevel gear (12) is rotationally connected to the drive motor (10) via a third transmission belt (25).

7. A multi-stage screening device for waste PCB copper powder according to claim 2, characterized in that: The screening diameter of the first screening plate (4) is 1 mm larger than the screening diameter of the second screening plate (5).

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