Screening device for waste PCB recycling

Abstract

The utility model relates to the technical field of screening devices, in particular to a screening device for recycling waste PCBs (printed circuit boards), which comprises a shell, a conveyor and a screening mechanism are arranged in the shell, a paving mechanism is arranged at the top of the inner side of the shell, the conveyor is positioned at the top of the screening mechanism, the paving mechanism is positioned at the top of the conveyor, and the screening mechanism is positioned at the bottom of the shell. The paving mechanism comprises a fixed seat, two paving rods and a universal joint I; and the fixed seat is fixedly connected to the shell. According to the waste PCB particle spreading device, the spreading rods are fixedly connected with the first spreading bristles, the two spreading rods can rotate, the first spreading bristles are used for spreading waste PCB particles, and therefore the waste PCB particles on a conveyor can be evenly spread as much as possible, the waste PCB particles can fall into the whole area of a screening net as much as possible, and the screening efficiency is improved. The screening efficiency of the waste PCB particles can be guaranteed, the thickness of the waste PCB particles on the conveyor can be controlled as much as possible through the first paving bristles, and screening can be conducted smoothly.

Description

Technical Field

[0001] This utility model relates to the field of screening device technology, specifically a screening device for recycling waste PCB boards. Background Technology

[0002] Waste PCBs are not only covered with intricate circuit patterns, but also contain various metals (such as copper, gold, silver, tin, etc.), non-metals, and potentially hazardous substances. If discarded or landfilled indiscriminately, waste PCBs will cause serious pollution to the soil and water sources. Therefore, waste PCBs are usually recycled through crushing, screening, and other processes. After crushing, the waste PCBs are sometimes screened to classify and recycle them according to different particle sizes, which facilitates subsequent reprocessing.

[0003] In existing waste PCB board recycling screening devices, vibrating screening is sometimes used. However, during the screening process, a conveyor structure is typically used to directly transport the waste PCB board particles onto the screening device. Because the waste PCB board particles may accumulate in the middle of the conveyor structure, similar aggregation may occur when the particles enter the screening device. During vibrating screening, the particles move obliquely downwards, potentially leaving some screen edges unused, affecting screening efficiency. Furthermore, thicker aggregates may not be completely screened, hindering the screening process. Utility Model Content

[0004] The purpose of this invention is to provide a screening device for recycling waste PCB boards, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A screening device for recycling waste PCB boards includes a housing, inside which a conveyor and a screening mechanism are arranged, and at the top of the inner side of the housing is a spreading mechanism. The conveyor is located at the top of the screening mechanism, and the spreading mechanism is located at the top of the conveyor.

[0007] The paving mechanism includes a fixed base, two paving rods, and one universal joint;

[0008] The fixing seat is fixedly connected to the housing, and the top surface of the fixing seat is fixedly connected to the inner top surface of the housing.

[0009] Two paving rods are rotatably connected to both sides of the fixed base, and several paving roughnesses are fixedly connected to the sides of the paving rods. The two paving rods are set at an angle.

[0010] Universal joint one is fixedly connected to the ends of the two paving rods, and the universal joint one is located inside the fixed base.

[0011] Furthermore, the side of the housing is provided with a feed chute corresponding to the conveyor, and a number of soft sheets are fixedly connected to the inner side of the feed chute. The bottom of the conveyor is fixedly connected to the bottom surface of the feed chute, and two baffles are fixedly connected to the top surface of the conveyor. The soft sheets are located at the top of the conveyor.

[0012] Furthermore, the paving mechanism also includes two limit seats, a power box one, and a universal joint two;

[0013] Both limiting seats are fixedly connected to the housing, and both limiting seats are rotatably connected to the ends of adjacent paving rods, with the two paving rods located between the two limiting seats;

[0014] A power box is fixedly connected to the side of a limiting seat. A power motor is installed inside the power box. The side of the power box is fixedly connected to the side of the housing. The power box is located outside the housing.

[0015] Universal joint two is rotatably connected inside a limiting seat. Universal joint two is fixedly connected to the end of a paving rod. The output end of the power motor one is drivenly connected to the end of universal joint two.

[0016] Furthermore, a connecting seat is fixedly connected inside the housing to the paving mechanism, a rotating rod is rotatably connected to the inner side of the connecting seat, a plurality of paving rough parts are fixedly connected to the side of the rotating rod, a second power motor is provided on the side of the connecting seat, the output end of the second power motor is connected to the end of the rotating rod, a second power box is fixedly connected to the side of the connecting seat, and the second power motor is located inside the second power box.

[0017] Preferably, the screening mechanism includes a screening plate, three screening troughs, a shielding frame, and a shielding box;

[0018] The screening plate is located inside the housing;

[0019] All three screening troughs are set on a screening plate, and screening screens are fixedly connected inside the screening troughs. The mesh diameter of the three screening screens increases sequentially from high to low.

[0020] The shielding frame is fixedly connected to the top surface of the screening plate;

[0021] The shielding box is fixedly connected to the top of the shielding frame, and a vibration motor is installed inside the shielding box.

[0022] Furthermore, the bottom surface of the screening plate is fixedly connected to several guide plates, and three collection frames are slidably connected inside the housing. The three collection frames correspond to three screening slots respectively, and both sides of the collection frames are slidably connected to the sides of the adjacent guide plates.

[0023] Preferably, the bottom of the screening plate is provided with a plurality of elastic support components, the elastic support components including a fixed cylinder and a sliding cylinder, the inner side of the fixed cylinder is slidably connected to the side of the sliding cylinder, the bottom end of the fixed cylinder is fixedly connected to the bottom surface of the shell, the top end of the sliding cylinder is fixedly connected to the bottom surface of the screening plate, and a spring is fixedly connected to the inner side of the fixed cylinder and fixedly connected to the top surface of the sliding cylinder.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] 1. Several paving bobbins are fixedly connected by paving rods. Waste PCB board particles can be conveyed by a conveyor. The paving rods can rotate, which in turn drives the paving bobbins on them to rotate, spreading the waste PCB board particles evenly on the conveyor. This ensures that when the waste PCB board particles fall onto the screening mechanism, they can fall onto the entire area of ​​the screening screen, which helps to ensure the efficiency of screening. Furthermore, the thickness of the waste PCB board particles on the conveyor can be controlled by the paving bobbins, avoiding excessive thickness that could result in incomplete screening and facilitating smooth screening. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a screening device for recycling waste PCB boards according to this utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the shell in this utility model;

[0028] Figure 3 This is a schematic diagram of the screening mechanism in this utility model;

[0029] Figure 4 This is a bottom view schematic diagram of the paving mechanism in this utility model;

[0030] Figure 5 This is a schematic diagram of the internal structure of the elastic support component in this utility model.

[0031] In the diagram: 1. Shell; 11. Soft sheet; 12. Feed chute; 2. Conveyor; 21. Baffle; 3. Paving mechanism; 31. Paving rod; 32. Fixed seat; 33. Limiting seat; 34. Power box one; 35. Universal joint one; 36. Universal joint two; 4. Connecting seat; 41. Rotating rod; 42. Power box two; 5. Screening mechanism; 51. Screening plate; 52. Screening trough; 53. Covering frame; 54. Covering box; 55. Guide plate; 6. Collection frame; 7. Elastic support assembly; 71. Fixed cylinder; 72. Sliding cylinder; 73. Spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-4 In this embodiment of the utility model, a screening device for recycling waste PCB boards includes a housing 1. A conveyor 2 and a screening mechanism 5 are arranged inside the housing 1. A spreading mechanism 3 is arranged on the top inner side of the housing 1. The conveyor 2 is located on top of the screening mechanism 5, and the spreading mechanism 3 is located on top of the conveyor 2. A feeding trough 12 is opened on the side of the housing 1 corresponding to the conveyor 2. A plurality of soft sheets 11 are fixedly connected to the inner side of the feeding trough 12. The bottom of the conveyor 2 is fixedly connected to the bottom surface of the feeding trough 12. Two baffles 21 are fixedly connected to the top surface of the conveyor 2. The soft sheets 11 are located on the top of the conveyor 2 and can block the interior of the housing 1.

[0034] The paving mechanism 3 includes a fixed seat 32, two paving rods 31, universal joint one 35, two limit seats 33, power box one 34, and universal joint two 36;

[0035] The fixed base 32 is fixedly connected to the housing 1, and the top surface of the fixed base 32 is fixedly connected to the inner top surface of the housing 1. Two paving rods 31 are rotatably connected to both sides of the fixed base 32. The two paving rods 31 are located between two baffles 21, which can block waste PCB board particles. Several paving roughnesses are fixedly connected to the sides of the paving rods 31. The two paving rods 31 are inclined. Universal joint 35 is fixedly connected to the ends of the two paving rods 31. Universal joint 35 is located inside the fixed base 32. Two limiting seats 33 are fixedly connected to the housing 1. The two paving rods 31 are rotatably connected to the ends of adjacent paving rods 31, and are located between two limiting seats 33. A power box 34 is fixedly connected to the side of a limiting seat 33. A power motor 1 is installed inside the power box 34. The power box 34 can cover the power motor 1. The side of the power box 34 is fixedly connected to the side of the housing 1. The power box 34 is located outside the housing 1. A universal joint 36 is rotatably connected to the inside of a limiting seat 33. The universal joint 36 is fixedly connected to the end of a paving rod 31. The output end of the power motor 1 is connected to the end of the universal joint 36 for transmission.

[0036] Specifically, waste PCB board particles can be conveyed by conveyor 2. The waste PCB board particles can pass through the feed chute 12 into the interior of the housing 1, and then through the interior of the flexible sheet 11. The power motor 1 drives universal joint 2 36 to rotate, which in turn drives one paving rod 31 to rotate. One paving rod 31 can drive another paving rod 31 to rotate through universal joint 1 35, thus making the two paving rods 31 rotate synchronously. The paving rod 31 can drive the paving mat 1 on it to rotate, so that the paving mat 1 spreads the waste PCB board particles on the conveyor 2. The inclined setting allows the PCB board particles to be spread from the middle of the conveyor 2 to both sides, keeping the thickness of the waste PCB board particles as uniform as possible. This ensures that when the waste PCB board particles fall onto the screening mechanism 5, they can fall onto the entire area of ​​the screening mechanism 5, which helps to ensure the efficiency of screening the waste PCB board particles. In addition, there is a certain distance between the spreading material and the conveyor 2, which can control the thickness of the waste PCB board particles on the conveyor 2 as much as possible, avoiding the situation where the waste PCB board particles are too thick and are not completely screened, thus facilitating the smooth screening process.

[0037] Example 1

[0038] like Figure 2 and Figure 4 As shown, in this embodiment, a connecting seat 4 is fixedly connected inside the housing 1 to the paving mechanism 3. The connecting seat 4 is fixed to the inner top surface of the housing 1 corresponding to the fixing seat 32. A rotating rod 41 is rotatably connected to the inner side of the connecting seat 4. Several paving burrs are fixedly connected to the side of the rotating rod 41. A power motor is provided on the side of the connecting seat 4. The output end of the power motor is connected to the end of the rotating rod 41. A power box 42 is fixedly connected to the side of the connecting seat 4. The power motor is located inside the power box 42. The power box 42 can shield the power motor.

[0039] In practice, when the conveyor 2 transports the waste PCB board particles, the waste PCB board particles will first pass the bottom of the connecting seat 4, and then pass the bottom of the paving mechanism 3. The rotating rod 41 can be driven to rotate by the power motor 2. The rotating rod 41 can drive the paving rod 2 on it to rotate, thereby controlling the thickness of the waste PCB board in the middle of the conveyor 2 and paving the waste PCB board particles between the two paving rods 31, which is conducive to improving the paving effect.

[0040] like Figure 2-3 As shown, in this embodiment, the screening mechanism 5 includes a screening plate 51, three screening troughs 52, a shielding frame 53, and a shielding box 54.

[0041] The screening plate 51 is set inside the housing 1. The screening plate 51 is inclined. The height of the end of the screening plate 51 away from the soft sheet 11 is greater than the height of the end of the screening plate 51 close to the soft sheet 11. Three screening grooves 52 are all opened on the screening plate 51. Screening mesh is fixedly connected inside the screening groove 52. The mesh diameter of the three screening meshes increases from high to low. The shielding frame 53 is fixedly connected to the top surface of the screening plate 51. The shielding box 54 is fixedly connected to the top of the shielding frame 53. A vibration motor is installed inside the shielding box 54.

[0042] Several guide plates 55 are fixedly connected to the bottom surface of the screening plate 51. Three collection frames 6 are slidably connected inside the housing 1. The three collection frames 6 correspond to three screening troughs 52 respectively. Both sides of the collection frames 6 are slidably connected to the sides of the adjacent guide plates 55.

[0043] In practice, after the conveyor 2 transports the waste PCB board particles to its end, the waste PCB board particles will fall onto the screening plate 51. The vibration motor can be started to make the shielding box 54 and the shielding frame 53 vibrate, thereby causing the screening plate 51 to vibrate. This causes the waste PCB board particles to gradually move obliquely downward along the screening plate 51 and be screened sequentially by three screening screens. Waste PCB board particles of the corresponding diameter can pass through the corresponding screening screen and then fall into the corresponding collection frame 6, thereby classifying and screening the waste PCB board particles. The falling waste PCB board particles can be blocked by the guide plate 55. After the collection frame 6 is full, the collection frame 6 can be pushed out of the housing 1 and then replaced with a new collection frame 6.

[0044] Example 2

[0045] Based on Example 1, such as Figure 5 As shown, in this embodiment, the bottom of the screening plate 51 is provided with a plurality of elastic support components 7. The elastic support components 7 include a fixed cylinder 71 and a sliding cylinder 72. The inner side of the fixed cylinder 71 is slidably connected to the side of the sliding cylinder 72. The bottom end of the fixed cylinder 71 is fixedly connected to the bottom surface of the inner shell 1. The top end of the sliding cylinder 72 is fixedly connected to the bottom surface of the screening plate 51. A spring 7 is fixedly connected to the inner side of the fixed cylinder 71 and to the inner top surface of the sliding cylinder 72.

[0046] In practice, the fixed cylinder 71 can support the screening mechanism 5 through the sliding cylinder 72 and the spring 73. The sliding cylinder 72 can move inside the fixed cylinder 71, so that the screening plate 51 can vibrate smoothly inside the housing 1.

[0047] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 screening device for recycling waste PCB boards, comprising a housing (1), wherein a conveyor (2) and a screening mechanism (5) are disposed inside the housing (1), characterized in that, A paving mechanism (3) is provided on the top of the inner side of the shell (1); The paving mechanism (3) includes: The mounting base (32) is fixedly connected to the housing (1); Two paving rods (31) are rotatably connected to both sides of the fixed base (32), and several paving roughnesses are fixedly connected to the sides of the paving rods (31); Universal joint 1 (35) is fixedly connected to the ends of the two paving rods (31).

2. The screening device for recycling waste PCBs according to claim 1, characterized in that, The side of the housing (1) is provided with a feed trough (12) corresponding to the conveyor (2), and several soft sheets (11) are fixedly connected to the inner side of the feed trough (12).

3. The screening device for recycling waste PCBs according to claim 1, characterized in that, The paving mechanism (3) also includes: Both limiting seats (33) are fixedly connected to the shell (1), and both limiting seats (33) are rotatably connected to the end of the adjacent paving rod (31); Power box 1 (34) is fixedly connected to the side of a limit seat (33), and power motor 1 is installed inside power box 1 (34); Universal joint two (36) is rotatably connected inside a limit seat (33). Universal joint two (36) is fixedly connected to the end of a paving rod (31). The output end of the power motor is connected to the end of universal joint two (36) for transmission.

4. The screening device for recycling waste PCBs according to any one of claims 1-3, characterized in that, Inside the shell (1), a connecting seat (4) is fixedly connected to the paving mechanism (3). A rotating rod (41) is rotatably connected to the inner side of the connecting seat (4). Several paving burrs are fixedly connected to the side of the rotating rod (41). A power motor is provided on the side of the connecting seat (4). The output end of the power motor is connected to the end of the rotating rod (41) for transmission.

5. The screening device for recycling waste PCBs according to any one of claims 1-3, characterized in that, The screening mechanism (5) includes: A screening plate (51) is disposed inside the housing (1); Three screening troughs (52) are all opened on the screening plate (51), and screening screens are fixedly connected inside the screening troughs (52); The shielding frame (53) is fixedly connected to the top surface of the screening plate (51); The shielding box (54) is fixedly connected to the top of the shielding frame (53), and a vibration motor is installed inside the shielding box (54).

6. The screening device for recycling waste PCBs according to claim 5, characterized in that, Several guide plates (55) are fixedly connected to the bottom surface of the screening plate (51), and three collection frames (6) are slidably connected inside the shell (1).

7. The screening device for recycling waste PCB boards according to claim 5, characterized in that, Several elastic support components (7) are provided at the bottom of the screening plate (51).

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