A primary crushing device for PCB copper powder recovery

Abstract

This utility model discloses a primary crushing device for PCB copper powder recycling, including a crushing cylinder. A feed shell for feeding is installed through the top of the crushing cylinder, and a discharge port for discharging is opened at the bottom of one side of the crushing cylinder. Crushing mechanisms are provided both inside and outside the crushing cylinder. Utilizing these crushing mechanisms, when crushing waste PCBs, a drive motor drives the crushing rod and crushing roller to rotate, initially crushing the PCBs. The crushed material is then guided into the crushing chamber by the crushing blocks and the crushing cylinder. Simultaneously, the crushing rod rotates, driving the crossbar to rotate via a pulley and a transmission belt. The meshing of the driving and driven bevel gears then drives the crushing blocks to rotate, further crushing the PCBs inside the crushing chamber. This method achieves uniform crushing of waste PCBs, avoiding the advantage of secondary crushing.

Description

Technical Field

[0001] This utility model relates to the field of waste PCB board crushing and recycling technology, specifically a primary crushing device for PCB board copper powder recycling. Background Technology

[0002] With the rapid development of the electronics industry, the use of PCBs (Printed Circuit Boards) has increased dramatically, resulting in a large amount of waste PCBs. Waste PCBs contain abundant metal resources, especially copper, making their recycling significant for both economic and environmental reasons. In the PCB copper powder recycling process, primary crushing is a crucial initial step, aimed at breaking the waste PCBs into smaller particles to facilitate more efficient subsequent processing.

[0003] However, existing technologies still have significant shortcomings, such as:

[0004] In the existing technology, the crushing equipment currently on the market has low efficiency and the crushed particles are of uneven size, which makes it difficult to meet the process requirements of subsequent copper powder separation and purification. Therefore, secondary crushing is often required, which greatly reduces the crushing efficiency of waste PCB boards. Utility Model Content

[0005] The purpose of this invention is to provide a primary crushing device for PCB board copper powder recovery, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a primary crushing device for PCB copper powder recovery, comprising a crushing cylinder, a feed shell for feeding is installed through the top of the crushing cylinder, a discharge port for discharging is opened at the bottom of one side of the crushing cylinder, and crushing mechanisms for crushing are provided inside and outside the crushing cylinder.

[0007] The crushing mechanism includes two crushing rods rotatably mounted on the top of the inner cavity of the crushing cylinder, and crushing rollers are mounted on the surface of both crushing rods. A drive motor is mounted on the top of one side of the crushing cylinder, and the output end of the drive motor passes through the crushing cylinder and is fixedly connected to one of the crushing rods.

[0008] The crushing cylinder is equipped with a crushing assembly for further crushing the crushed PCB copper board.

[0009] Preferably, the crushing assembly includes a crushing cylinder fixedly installed inside the crushing cylinder, and the crushing cylinder is divided into upper and lower parts, and a fixing plate is fixedly installed on the surface of the crushing cylinder located in the lower part, and the outer wall of the fixing plate is fixedly connected to the inner wall of the crushing cylinder.

[0010] The crushing cylinder contains crushing blocks, and a crushing chamber is formed between the crushing cylinder and the crushing blocks. The top of the crushing chamber is designed as an arc-shaped surface.

[0011] Preferably, a vertical rod is installed through the inside of the crushed block, and the bottom end of the vertical rod is rotatably connected to the bottom of the inner cavity of the crushing cylinder; a horizontal rod is installed through the bottom of one side of the crushing cylinder.

[0012] One end of the crushing rod passes through the crushing cylinder and extends to the outside of the crushing cylinder. A driven bevel gear is fixedly installed on the bottom of the surface of the vertical rod. A driving bevel gear is fixedly installed on the end of the horizontal rod located inside the crushing cylinder. The driven bevel gear and the driving bevel gear are meshed together.

[0013] Both the crossbar and the crushing rod are fixedly mounted with pulleys at one end outside the crushing cylinder. A drive belt is wound around the surface of the pulleys, and the two pulleys are connected by the drive belt.

[0014] Preferably, the top of the fixed plate is provided with an annular groove, and wedge-shaped blocks are fixedly installed on both sides inside the annular groove;

[0015] A leak-proof ring is slidably installed on the inner wall of the crushing cylinder. A fixing rod is installed through both sides of the top of the leak-proof ring. The top ends of the two fixing rods are fixedly connected to the bottom of the crushed block. The bottom ends of the two fixing rods penetrate the crushing cylinder and extend into the interior of the annular groove. A slider is fixedly installed at the end of the fixing rod located inside the annular groove.

[0016] Preferably, four sliding grooves are provided at the penetration point between the crushing block and the vertical rod, and a limiting strip is fixedly installed on the surface of the vertical rod inside the crushing block, and the crushing block is slidably connected to the limiting strip through the sliding grooves.

[0017] Preferably, a guide plate is fixedly installed at the bottom of the inner cavity of the crushing cylinder, and the guide plate is rotatably connected to the vertical rod;

[0018] Furthermore, the guide plate is installed on the top of the driven bevel gear and the driving bevel gear to protect the driven bevel gear and the driving bevel gear.

[0019] Preferably, a protective shell is fixedly installed on one side of the crushing cylinder, and the protective shell covers the surface of the pulley and the drive belt to protect the pulley and the drive belt.

[0020] Preferably, a control panel is installed on the front surface of the crushing cylinder, and the electrical output terminal of the control panel is connected to the electrical input terminal of the drive motor.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. By utilizing the crushing mechanism, when crushing waste PCB boards, the drive motor drives the crushing rod and crushing roller to rotate, initially crushing the PCB boards. The crushed PCB boards are then guided into the crushing chamber by the crushing blocks and crushing cylinder. While the crushing rod rotates, it drives the crossbar to rotate synchronously through the transmission belt and pulley. Then, the meshing connection between the active bevel gear and the driven bevel gear drives the crushing blocks to rotate synchronously, further crushing the PCB boards inside the crushing chamber. This allows the waste PCB boards to be crushed evenly, avoiding the advantage of secondary crushing.

[0023] 2. While the crushing block rotates to crush the PCB board, it simultaneously drives the fixed rod and slider to rotate. Utilizing the wedge shape design, the crushing block moves up and down through the sliding between the slider and the wedge as it rotates, impacting the PCB board inside the crushing chamber. This further improves the uniformity of PCB board crushing and greatly enhances crushing efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a cross-sectional structural diagram of the crushing cylinder of this utility model;

[0026] Figure 3 This is a schematic diagram of the crushing mechanism of this utility model;

[0027] Figure 4 This is a partial structural schematic diagram of the crushing mechanism of this utility model;

[0028] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A;

[0029] Figure 6 This is a schematic diagram of the wedge block structure of this utility model.

[0030] In the diagram: 1. Crushing cylinder; 2. Feed shell; 3. Discharge port; 4. Crushing mechanism; 41. Crushing rod; 42. Crushing roller; 43. Drive motor; 44. Crushing assembly; 441. Crushing cylinder; 442. Fixed plate; 443. Crushing block; 444. Crushing chamber; 445. Arc-shaped surface; 446. Vertical rod; 447. Horizontal rod; 448. Driven bevel gear; 449. Driven bevel gear; 4401. Pulley; 4402. Transmission belt; 4403. Annular groove; 4404. Wedge block; 4405. Leak-proof ring; 4406. Fixed rod; 4407. Slider; 4408. Limiting strip; 4409. Protective shell; 45. Guide plate; 5. Control panel. Detailed Implementation

[0031] 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.

[0032] Example 1:

[0033] Please see Figures 1-6 This utility model provides a technical solution: a primary crushing device for PCB copper powder recycling, including a crushing cylinder 1, a feed shell 2 for feeding is installed through the top of the crushing cylinder 1, a discharge port 3 for discharging is opened at the bottom of one side of the crushing cylinder 1, and crushing mechanisms 4 for crushing are provided inside and outside the crushing cylinder 1.

[0034] The crushing mechanism 4 includes two crushing rods 41 rotatably mounted on the top of the inner cavity of the crushing cylinder 1, and crushing rollers 42 are mounted on the surface of both crushing rods 41. A drive motor 43 is mounted on the top of one side of the crushing cylinder 1, and the output end of the drive motor 43 passes through the crushing cylinder 1 and is fixedly connected to one of the crushing rods 41.

[0035] The crushing cylinder 1 is equipped with a crushing assembly 44 for further crushing the crushed PCB copper board.

[0036] The crushing assembly 44 includes a crushing cylinder 441 fixedly installed inside the crushing cylinder 1. The crushing cylinder 441 is divided into upper and lower parts. A fixing plate 442 is fixedly installed on the surface of the lower crushing cylinder 441, and the outer wall of the fixing plate 442 is fixedly connected to the inner wall of the crushing cylinder 1. A crushing block 443 is installed inside the crushing cylinder 441. A crushing chamber 444 is separated between the crushing cylinder 441 and the crushing block 443, and the top of the crushing chamber 444 is set as an arc-shaped surface 445. A vertical rod 446 is installed through the inside of the crushing block 443, and the bottom end of the vertical rod 446 is rotatably connected to the bottom of the inner cavity of the crushing cylinder 1. A crossbar 447 is installed through the bottom of the crusher; one end of a crushing rod 41 passes through the crushing cylinder 1 and extends to the outside of the crushing cylinder 1; a driven bevel gear 448 is fixedly installed on the bottom of the surface of the vertical rod 446; a driving bevel gear 449 is fixedly installed on the end of the crossbar 447 located inside the crushing cylinder 1, and the driven bevel gear 448 and the driving bevel gear 449 are meshed; a pulley 4401 is fixedly installed on the end of the crossbar 447 and the end of the crushing rod 41 located outside the crushing cylinder 1; a transmission belt 4402 is wound around the surface of the pulley 4401, and the two pulleys 4401 are connected by the transmission belt 4402.

[0037] In this embodiment, when the waste PCB board is crushed, the drive motor 43 drives the crushing rod 41 and the crushing roller 42 to rotate, which initially crushes the PCB board. The crushed PCB board is then guided by the crushing block 443 and the crushing cylinder 441 into the crushing chamber 444. While the crushing rod 41 is rotating, it drives the crossbar 447 to rotate synchronously through the transmission connection of the pulley 4401 and the transmission belt 4402. Then, the meshing connection of the driving bevel gear 449 and the driven bevel gear 448 drives the crushing block 443 to rotate synchronously, which crushes the PCB board that has entered the crushing chamber 444 again. This allows the waste PCB board to be crushed evenly and avoids the advantage of secondary crushing.

[0038] A guide plate 45 is fixedly installed at the bottom of the inner cavity of the crushing cylinder 1. The guide plate 45 is rotatably connected to the vertical rod 446. The guide plate 45 is installed on the top of the driven bevel gear 448 and the driving bevel gear 449 to protect the driven bevel gear 448 and the driving bevel gear 449.

[0039] In this embodiment, the driven bevel gear 448 and the driving bevel gear 449 are protected, while the crushed PCB board is guided so that it can be discharged through the discharge port 3.

[0040] A protective shell 4409 is fixedly installed on one side of the crushing cylinder 1, and the protective shell 4409 covers the surface of the pulley 4401 and the transmission belt 4402 to protect the pulley 4401 and the transmission belt 4402.

[0041] A control panel 5 is mounted on the front surface of the crushing drum 1. The electrical output terminal of the control panel 5 is connected to the electrical input terminal of the drive motor 43.

[0042] Example 2:

[0043] Based on Embodiment 1, this embodiment takes into account that although Embodiment 1 can uniformly crush the PCB board to ensure the uniformity of PCB board crushing, in actual use, the fixed-design crushing block 443 is prone to jamming when the PCB board enters the crushing chamber 444. Therefore, this embodiment uses the following structure to further improve the uniformity of PCB board crushing while avoiding jamming.

[0044] The top of the fixed plate 442 is provided with an annular groove 4403, and wedge blocks 4404 are fixedly installed on both sides inside the annular groove 4403; a leak-proof ring 4405 is slidably installed on the inner wall of the crushing cylinder 441, and a fixing rod 4406 is installed through both sides of the top of the leak-proof ring 4405. The top ends of the two fixing rods 4406 are fixedly connected to the bottom of the crushing block 443, and the bottom ends of the two fixing rods 4406 penetrate the crushing cylinder 441 and extend into the interior of the annular groove 4403. A slider 4407 is fixedly installed at one end of the fixing rod 4406 inside the annular groove 4403.

[0045] In this embodiment, while the crushing block 443 rotates to crush the PCB board, the crushing block 443 simultaneously drives the fixed rod 4406 and the slider 4407 to rotate. Utilizing the shape design of the wedge block 4404, the crushing block 443 moves up and down during rotation through the sliding between the slider 4407 and the wedge block 4404, impacting the PCB board inside the crushing chamber 444. This further improves the uniformity of PCB board crushing and greatly enhances crushing efficiency.

[0046] Four sliding grooves are provided at the penetration point between the crushing block 443 and the vertical rod 446, and a limiting strip 4408 is fixedly installed on the surface of the vertical rod 446 inside the crushing block 443. The crushing block 443 is slidably connected to the limiting strip 4408 through the sliding grooves.

[0047] In this embodiment, the stability of the crushing block 443 during rotation can be further maintained while the crushing block 443 moves up and down.

[0048] Working principle: When crushing waste PCB boards, the drive motor 43 drives the crushing rod 41 and crushing roller 42 to rotate, which initially crushes the PCB boards. The crushed boards are then guided by the crushing block 443 and the crushing cylinder 441 into the crushing chamber 444. While the crushing rod 41 is rotating, it drives the crossbar 447 to rotate synchronously through the transmission connection of the pulley 4401 and the transmission belt 4402. Then, the meshing connection of the active bevel gear 449 and the driven bevel gear 448 synchronously drives the crushing block 443 to rotate, which further crushes the PCB boards that have entered the crushing chamber 444.

[0049] Furthermore, while the crushing block 443 rotates to crush the PCB board, the crushing block 443 simultaneously drives the fixed rod 4406 and the slider 4407 to rotate. Utilizing the shape design of the wedge block 4404, the crushing block 443 moves up and down during rotation through the sliding between the slider 4407 and the wedge block 4404, impacting the PCB board inside the crushing chamber 444 to further improve the uniformity of PCB board crushing.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PCB copper powder recovery primary crushing device, comprising a crushing cylinder (1), a feeding shell (2) for feeding is installed through the top of the crushing cylinder (1), a discharge port (3) for discharging is opened at the bottom of one side of the crushing cylinder (1), characterized in that: The crushing cylinder (1) is equipped with crushing mechanisms (4) both inside and outside. The crushing mechanism (4) includes two crushing rods (41) rotatably mounted on the top of the inner cavity of the crushing cylinder (1), and crushing rollers (42) are mounted on the surface of the two crushing rods (41). A drive motor (43) is mounted on the top of one side of the crushing cylinder (1), and the output end of the drive motor (43) passes through the crushing cylinder (1) and is fixedly connected to one of the crushing rods (41). The crushing cylinder (1) is equipped with a crushing assembly (44) for further crushing the crushed PCB copper board.

2. The PCB copper powder recycling primary crushing device according to claim 1, characterized in that: The crushing assembly (44) includes a crushing cylinder (441) fixedly installed inside the crushing cylinder (1), and the crushing cylinder (441) is divided into upper and lower parts. A fixing plate (442) is fixedly installed on the surface of the crushing cylinder (441) located in the lower part. The outer wall of the fixing plate (442) is fixedly connected to the inner wall of the crushing cylinder (1). The crushing cylinder (441) has a crushing block (443) installed inside. A crushing chamber (444) is separated between the crushing cylinder (441) and the crushing block (443), and the top of the crushing chamber (444) is set as an arc-shaped surface (445).

3. The primary crushing device for PCB board copper powder recovery according to claim 2, characterized in that: A vertical rod (446) is installed through the inside of the crushing block (443), and the bottom end of the vertical rod (446) is rotatably connected to the bottom of the inner cavity of the crushing cylinder (1). A horizontal rod (447) is installed through the bottom of one side of the crushing cylinder (1). One end of the crushing rod (41) passes through the crushing cylinder (1) and extends to the outside of the crushing cylinder (1). A driven bevel gear (448) is fixedly installed on the bottom of the surface of the vertical rod (446). A driving bevel gear (449) is fixedly installed on one end of the horizontal rod (447) located inside the crushing cylinder (1). The driven bevel gear (448) and the driving bevel gear (449) are meshed. Both the crossbar (447) and the crushing rod (41) are fixedly installed with pulleys (4401) at one end outside the crushing cylinder (1). A transmission belt (4402) is wound around the surface of the pulley (4401), and the two pulleys (4401) are connected by the transmission belt (4402).

4. The primary crushing device for PCB copper powder recovery according to claim 3, characterized in that: The top of the fixed plate (442) is provided with an annular groove (4403), and wedge blocks (4404) are fixedly installed on both sides inside the annular groove (4403). A leak-proof ring (4405) is slidably installed on the inner wall of the crushing cylinder (441). A fixing rod (4406) is installed through both sides of the top of the leak-proof ring (4405). The top ends of the two fixing rods (4406) are fixedly connected to the bottom of the crushing block (443). The bottom ends of the two fixing rods (4406) penetrate the crushing cylinder (441) and extend into the interior of the annular groove (4403). A slider (4407) is fixedly installed at one end of the fixing rod (4406) inside the annular groove (4403).

5. The primary crushing device for PCB copper powder recovery according to claim 4, characterized in that: Four sliding grooves are provided at the penetration point between the crushing block (443) and the vertical rod (446), and a limiting strip (4408) is fixedly installed on the surface of the vertical rod (446) inside the crushing block (443). The crushing block (443) is slidably connected to the limiting strip (4408) through the sliding grooves.

6. The primary crushing device for PCB copper powder recovery according to claim 3, characterized in that: A guide plate (45) is fixedly installed at the bottom of the inner cavity of the crushing cylinder (1), and the guide plate (45) and the vertical rod (446) are rotatably connected. The guide plate (45) is installed on the top of the driven bevel gear (448) and the driving bevel gear (449) to protect the driven bevel gear (448) and the driving bevel gear (449).

7. The primary crushing device for PCB copper powder recovery according to claim 3, characterized in that: A protective shell (4409) is fixedly installed on one side of the crushing cylinder (1), and the protective shell (4409) covers the surface of the pulley (4401) and the transmission belt (4402) to protect the pulley (4401) and the transmission belt (4402).

8. The primary crushing device for PCB board copper powder recovery according to claim 1, characterized in that: The front surface of the crushing cylinder (1) is equipped with a control panel (5), and the electrical output terminal of the control panel (5) is connected to the electrical input terminal of the drive motor (43).

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