Airflow sorting mechanism for recycling copper powder of waste PCB (Printed Circuit Board)

Abstract

The utility model discloses an airflow sorting mechanism for recycling copper powder of a waste PCB (Printed Circuit Board). The airflow sorting mechanism is arranged in the collecting box and at the top of the collecting box, is used for sorting and recycling the copper powder and comprises a sorting shell arranged on one side of the top of the collecting box, the bottom of the sorting shell communicates with a connecting pipe, and the bottom end of the connecting pipe communicates with the top of the collecting box; by means of the arrangement of the airflow sorting mechanism, suction force generated by an air pump is transmitted into a collecting box and a sorting shell through a connecting pipe, powder entering the sorting shell is sucked, when the powder mixed with other impurities passes through a filter plate, resin, glass fibers and other large impurities in the powder are preliminarily filtered, and meanwhile the powder is separated from the sorting shell through the filter plate. And the filtered powder falls to the surface of the first pore plate, and small impurities such as resin and glass fibers in the powder are filtered again through the first metal filter screen, so that the copper powder is separated from the impurities, and the situation that the recovery efficiency of the copper powder is affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of copper powder recycling technology, specifically an airflow sorting mechanism for recycling copper powder from waste PCB boards. Background Technology

[0002] With the development of my country's electronics industry, the amount of discarded electronic products and household appliances is increasing, resulting in a large number of waste circuit boards. We also see people specializing in recycling these circuit boards. Currently, PCB recycling has become a professional production line. Using specialized machinery, PCBs can be quickly crushed and their usable components recovered. The current waste PCB recycling process includes the following steps: waste cutting, manual sorting, gold removal, tin removal, primary crushing, magnetic separation, secondary crushing, vibration sorting, airflow sorting, granulation crushing, gravity sorting, and molding compounding, to achieve preliminary recycling of both metals and non-metals.

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

[0004] In existing technologies, after waste PCB boards undergo pretreatment such as crushing, the copper powder and other impurities (such as resin, glass fiber, etc.) are mixed together. Due to the limitation of the sorting particle size, the airflow separation mechanism is often unable to completely separate the components, and further separation and purification are required, which greatly affects the copper powder recovery efficiency. Utility Model Content

[0005] The purpose of this invention is to provide an airflow sorting mechanism for recycling copper powder from waste PCB boards, 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: an airflow sorting mechanism for recycling copper powder from waste PCB boards, comprising:

[0007] Collection box;

[0008] An airflow separation mechanism is installed inside and on top of a collection box for separating and recycling copper powder. It includes a separation housing located on one side of the top of the collection box. The bottom of the separation housing is connected to a connecting pipe, the bottom end of which is connected to the top of the collection box. An air pump is installed on the other side of the top of the collection box. The air inlet of the air pump is connected to a connecting pipe. The end of the connecting pipe away from the air pump passes through the collection box and extends into the interior of the collection box. Separation components for removing impurities from copper powder are installed inside both the collection box and the separation housing.

[0009] Preferably, the separation assembly includes several fixed plates fixedly installed on the top and bottom of the inner cavity of the sorting housing, and a spring is fixedly installed on one side of each of the fixed plates. A filter plate and a first perforated plate are fixedly installed on the end of the spring away from the fixed plate, and a first metal filter screen is fixedly installed in the hole of the first perforated plate.

[0010] A second perforated plate is fixedly installed inside the collection box to divide the collection box into two storage chambers. A second metal filter screen is fixedly installed inside the holes of the second perforated plate. The mesh size of the second metal filter screen is smaller than that of the first metal filter screen.

[0011] Preferably, wedge blocks are fixedly installed on the side of the first perforated plate adjacent to the filter plate. A motor is installed on the top of the sorting housing. The output end of the motor passes through the sorting housing and extends into the interior of the sorting housing. A rotating rod is fixedly installed on the output end of the motor. Several mounting brackets are fixedly installed on the surface of the rotating rod between the first perforated plate and the filter plate. Push blocks are fixedly installed on both ends of the mounting brackets away from the rotating rod. The push blocks and the wedge blocks are slidably connected.

[0012] Preferably, the bottom end of the rotating rod passes through the sorting housing and the connecting pipe in sequence and extends into the interior of the connecting pipe, and a spiral conveying blade is installed on the surface of the rotating rod located inside the connecting pipe.

[0013] Preferably, a sleeve is fixedly installed on one side of the top of the inner cavity of the collection box, the sleeve is installed on the surface of the connecting pipe located at one end inside the collection box, and a non-woven fabric layer is fixedly installed at the bottom of the inner cavity of the sleeve.

[0014] Preferably, both sides of the front surface of the sorting housing and the front surface of the collection box are hinged with sealing doors, and the surface of the sealing doors is equipped with handles.

[0015] Preferably, a controller is mounted on the surface of one of the sealing doors, and the electrical output terminal of the controller is connected to the electrical input terminals of the air pump and the motor, respectively.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. Utilizing the airflow separation mechanism, the suction force generated by the air pump is transmitted through the connecting pipe to the inside of the collection box and the separation shell to draw in the powder entering the separation shell. When the powder mixed with other impurities passes through the filter plate, larger impurities such as resin and glass fiber are initially filtered. At the same time, the filtered powder falls to the surface of the first perforated plate, and smaller impurities such as resin and glass fiber in the powder are filtered again by the first metal filter screen to separate the copper powder from the impurities and avoid affecting the copper powder recovery efficiency.

[0018] 2. As copper powder enters the collection box through the connecting pipe, the heavier, larger copper powder particles fall into one storage chamber through the second metal filter screen on the surface of the second perforated plate, while the lighter, smaller copper powder particles enter another storage chamber as the air pump continues to operate. This process is designed to classify the copper powder by particle size, making it easier for subsequent workers to reuse the copper powder.

[0019] 3. When copper powder mixed with other impurities enters the interior of the sorting housing, the motor drives the rotating rod and push block to rotate. Utilizing the inclined surface design of the wedge block, when the push block contacts the wedge block, it abuts against the filter plate and the first perforated plate. The elasticity of the spring drives the filter plate and the first perforated plate to reciprocate, thereby further improving the filtration efficiency of the copper powder. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a cross-sectional view of the collection box of this utility model;

[0022] Figure 3 This is a cross-sectional view of the sorting housing of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the detachable component of this utility model;

[0024] Figure 5 This utility model Figure 4 A magnified structural diagram of point A in the middle.

[0025] In the diagram: 1. Collection box; 11. Sealed door; 12. Handle; 2. Airflow sorting mechanism; 21. Sorting housing; 22. Connecting pipe; 23. Air pump; 24. Connecting pipe; 25. Separation assembly; 251. Fixing plate; 252. Spring; 253. Filter plate; 254. First perforated plate; 255. First metal filter screen; 256. Second perforated plate; 257. Second metal filter screen; 258. Wedge block; 259. Motor; 2501. Rotating rod; 2502. Mounting bracket; 2503. Push block; 2504. Spiral conveyor blade; 26. Sleeve; 27. Non-woven fabric layer; 3. Controller. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-5 This utility model provides a technical solution: an airflow sorting mechanism for recycling copper powder from waste PCB boards, comprising:

[0028] Collection Box 1;

[0029] An airflow separation mechanism 2 is installed inside and on top of the collection box 1 for separating and recycling copper powder. It includes a separation housing 21 installed on one side of the top of the collection box 1. A connecting pipe 22 is connected to the bottom of the separation housing 21. The bottom end of the connecting pipe 22 is connected to the top of the collection box 1. An air pump 23 is installed on the other side of the top of the collection box 1. A connecting pipe 24 is connected to the air inlet of the air pump 23. The end of the connecting pipe 24 away from the air pump 23 passes through the collection box 1 and extends into the interior of the collection box 1. Separation components 25 for removing impurities and separating copper powder are installed inside both the collection box 1 and the separation housing 21.

[0030] Reference Figure 3 as well as Figure 4 As shown, the separation assembly 25 includes several fixed plates 251 fixedly installed on the top and bottom of the inner cavity of the sorting housing 21, and springs 252 are fixedly installed on one side of each of the fixed plates 251. A filter plate 253 and a first perforated plate 254 are fixedly installed on the end of the spring 252 away from the fixed plate 251, respectively. A first metal filter screen 255 is fixedly installed in the hole of the first perforated plate 254.

[0031] In this embodiment, the suction force generated by the air pump 23 is transmitted to the inside of the collection box 1 and the sorting housing 21 through the connecting pipe 24 to draw in the powder entering the sorting housing 21. When the powder mixed with other impurities passes through the filter plate 253, the larger impurities such as resin and glass fiber are initially filtered. At the same time, the filtered powder falls to the surface of the first perforated plate 254, and the smaller impurities such as resin and glass fiber in the powder are filtered again by the first metal filter screen 255 to separate the copper powder from the impurities inside.

[0032] Reference Figure 2 As shown, a second perforated plate 256 is fixedly installed inside the collection box 1 to divide the collection box 1 into two storage chambers. A second metal filter 257 is fixedly installed in the holes of the second perforated plate 256. The mesh count of the second metal filter 257 is smaller than that of the first metal filter 255.

[0033] In this embodiment, when copper powder enters the collection box 1 through the connecting pipe 22, the heavier large copper powder particles fall into the storage chamber through the filtration of the second metal filter 257 on the surface of the second perforated plate 256, while the lighter small copper powder particles enter the other storage chamber as the air pump 23 continues to work, so as to classify the particle size of the copper powder.

[0034] Reference Figure 3 as well as Figure 4 As shown, wedge blocks 258 are fixedly installed on the side of the first perforated plate 254 adjacent to the filter plate 253. A motor 259 is installed on the top of the sorting housing 21. The output end of the motor 259 passes through the sorting housing 21 and extends into the interior of the sorting housing 21. A rotating rod 2501 is fixedly installed on the output end of the motor 259. Several mounting brackets 2502 are fixedly installed on the surface of the rotating rod 2501 between the first perforated plate 254 and the filter plate 253. Push blocks 2503 are fixedly installed on both ends of the mounting brackets 2502 away from the rotating rod 2501. The push blocks 2503 and the wedge blocks 258 are slidably connected.

[0035] In this embodiment, the motor 259 drives the rotating rod 2501 and the push block 2503 to rotate. Utilizing the inclined surface design of the wedge block 258, when the push block 2503 contacts the wedge block 258, it abuts against the filter plate 253 and the first perforated plate 254. The elasticity of the spring 252 drives the filter plate 253 and the first perforated plate 254 to reciprocate, thereby further improving the filtration efficiency of copper powder.

[0036] Reference Figure 4 as well as Figure 5 As shown, the bottom end of the rotating rod 2501 passes through the sorting housing 21 and the connecting pipe 22 in sequence and extends into the interior of the connecting pipe 22. The rotating rod 2501 is mounted with a spiral conveying blade 2504 on the surface inside the connecting pipe 22.

[0037] In this embodiment, when the copper powder after impurity removal passes through the connecting pipe 22, the spiral conveying blade 2504 conveys the copper powder along with the rotation of the rotating rod 2501, so as to avoid the copper powder being too much and causing the connecting pipe 22 to become blocked, thus affecting the copper powder recovery efficiency.

[0038] Reference Figure 2 As shown, a sleeve 26 is fixedly installed on one side of the top of the inner cavity of the collection box 1. The sleeve 26 is installed on the surface of the connecting pipe 24 located at one end inside the collection box 1. A non-woven fabric layer 27 is fixedly installed at the bottom of the inner cavity of the sleeve 26.

[0039] In this embodiment, the non-woven fabric layer 27 is used to filter the copper powder entering the collection box 1, so as to prevent the copper powder from entering the connecting pipe 24 without affecting the suction of the air pump 23.

[0040] Reference Figure 1 As shown, sealing doors 11 are hinged to both sides of the front surface of the sorting housing 21 and the front surface of the collection box 1, and handles 12 are installed on the surface of the sealing doors 11.

[0041] In this embodiment, it is convenient to collect the impurities inside the sorting shell 21 and the copper powder inside the collection box 1. It is convenient to clean the impurities inside the sorting shell 21 and to collect the copper powder inside the collection box 1.

[0042] Reference Figure 1 As shown, a controller 3 is mounted on the surface of a sealed door 11. The electrical output terminal of the controller 3 is connected to the electrical input terminal of the air pump 23 and the motor 259, respectively.

[0043] In this embodiment, the device is designed to facilitate operator control and to enable operators to perform airflow separation of copper powder.

[0044] Working principle: When filtering copper powder mixed with other impurities, the air pump 23 transmits suction to the inner cavity of the collection box 1 and the sorting housing 21 through the connecting pipe 24 to suck up the mixed powder entering the sorting housing 21. At the same time, the motor 259 drives the rotating rod 2501 and the push block 2503 to rotate. Utilizing the inclined surface design of the wedge block 258, when the push block 2503 contacts the wedge block 258, it abuts against the filter plate 253 and the first perforated plate 254. The elasticity of the spring 252 drives the filter plate 253 and the first perforated plate 254 to reciprocate. When the powder mixed with other impurities passes through the filter plate 253, larger impurities such as resin and glass fiber are initially filtered. At the same time, the filtered powder falls onto the surface of the first perforated plate 254, and smaller impurities such as resin and glass fiber in the powder are filtered again by the first metal filter screen 255.

[0045] As copper powder enters the collection box 1 through the connecting pipe 22, the heavier large copper powder particles fall into the storage chamber through the second metal filter 257 on the surface of the second perforated plate 256, while the lighter small copper powder particles enter the other storage chamber as the air pump 23 continues to work, thus classifying the copper powder by particle size.

[0046] 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. An airflow separation mechanism for recycling copper powder from waste PCB boards, characterized in that, include: Collection box (1); An airflow sorting mechanism (2) is installed inside and on top of a collection box (1) for sorting and recycling copper powder. It includes a sorting housing (21) on one side of the top of the collection box (1). The bottom of the sorting housing (21) is connected to a connecting pipe (22). The bottom end of the connecting pipe (22) is connected to the top of the collection box (1). An air pump (23) is installed on the other side of the top of the collection box (1). The air inlet of the air pump (23) is connected to a connecting pipe (24). The end of the connecting pipe (24) away from the air pump (23) passes through the collection box (1) and extends into the interior of the collection box (1). Separation components (25) for removing impurities from copper powder are installed inside both the collection box (1) and the sorting housing (21).

2. The airflow sorting mechanism for recycling copper powder from waste PCB boards according to claim 1, characterized in that: The separation assembly (25) includes several fixed plates (251) fixedly installed at the top and bottom of the inner cavity of the sorting housing (21), and a spring (252) is fixedly installed on one side of each of the fixed plates (251). A filter plate (253) and a first perforated plate (254) are fixedly installed at the end of the spring (252) away from the fixed plate (251), and a first metal filter screen (255) is fixedly installed in the hole of the first perforated plate (254). The collection box (1) is fixedly installed with a second perforated plate (256) to divide the collection box (1) into two storage chambers. A second metal filter (257) is fixedly installed in the hole of the second perforated plate (256). The mesh number of the second metal filter (257) is smaller than that of the first metal filter (255).

3. The airflow sorting mechanism for recycling copper powder from waste PCB boards according to claim 2, characterized in that: A wedge block (258) is fixedly installed on the side of the first perforated plate (254) adjacent to the filter plate (253). A motor (259) is installed on the top of the sorting housing (21). The output end of the motor (259) passes through the sorting housing (21) and extends into the interior of the sorting housing (21). A rotating rod (2501) is fixedly installed on the output end of the motor (259). Several mounting brackets (2502) are fixedly installed on the surface of the rotating rod (2501) between the first perforated plate (254) and the filter plate (253). Push blocks (2503) are fixedly installed on both ends of the mounting brackets (2502) away from the rotating rod (2501). The push blocks (2503) and the wedge block (258) are slidably connected.

4. The airflow sorting mechanism for recycling copper powder from waste PCB boards according to claim 3, characterized in that: The bottom end of the rotating rod (2501) passes through the sorting housing (21) and the connecting pipe (22) in sequence and extends into the interior of the connecting pipe (22). The rotating rod (2501) is equipped with a spiral conveying blade (2504) on the surface inside the connecting pipe (22).

5. The airflow sorting mechanism for recycling copper powder from waste PCB boards according to claim 1, characterized in that: A sleeve (26) is fixedly installed on one side of the top of the inner cavity of the collection box (1). The sleeve (26) is installed on the surface of the connecting pipe (24) located at one end inside the collection box (1). A non-woven fabric layer (27) is fixedly installed at the bottom of the inner cavity of the sleeve (26).

6. The airflow sorting mechanism for recycling copper powder from waste PCB boards according to claim 3, characterized in that: Both sides of the front surface of the sorting housing (21) and the front surface of the collection box (1) are hinged with sealing doors (11), and handles (12) are installed on the surface of the sealing doors (11).

7. The airflow sorting mechanism for recycling copper powder from waste PCB boards according to claim 6, characterized in that: A controller (3) is mounted on the surface of one of the sealed doors (11), and the electrical output terminal of the controller (3) is connected to the electrical input terminal of the air pump (23) and the motor (259), respectively.

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