Vibration winnowing device for photovoltaic recycled materials

Abstract

The utility model discloses a vibration winnowing device for photovoltaic recycled materials, which comprises a frame, a screen component and a feeding hopper, the screen component is matched with the frame, the screen component is in an inclined shape with one end higher than the other end, and the feeding hopper is mounted on the upper portion of the frame. One end of the first connecting rod assembly is connected with the torque output end of the eccentric motor, the other end of the first connecting rod assembly is connected with the middle of the screen assembly, one end of the second connecting rod assembly is connected with the machine frame, and the other end of the second connecting rod assembly is connected with the machine frame. The other end of the second connecting rod assembly is connected with the end of the screen assembly, the first discharging groove is connected with one end of the screen assembly, the second discharging groove is connected with the other end of the screen assembly, the draught fan is located below the screen assembly, and an air outlet of the draught fan corresponds to screen holes of the screen assembly. According to the utility model, glass, silicon wafers and solder strips can be separated.

Description

Technical Field

[0001] This utility model relates to the field of renewable resource recycling, specifically to a vibratory air separation device for photovoltaic material recycling. Background Technology

[0002] A typical photovoltaic (PV) module, from front to back, consists of: glass, a first EVA layer, a silicon wafer, a second EVA layer, a backsheet, and a fluorine film (some PV modules do not have a fluorine film). The first EVA layer bonds the glass to the silicon wafer, and the second EVA layer bonds the silicon wafer to the backsheet. Disassembling recycled PV modules is valuable because it allows for the extraction of precious metals and other substances.

[0003] CN109092842A discloses a method for dismantling scrapped photovoltaic modules. The method includes the steps of dismantling the aluminum frame, dismantling the junction box, removing the fluorine film, removing the backsheet, separating the EVA adhesive layer and the backsheet, separating the silicon wafer layer, solder strip and glass, and separating the materials separately.

[0004] In the above process, the backplane is peeled off after the fluorine film is removed, and then the silicon wafer layer, solder ribbon, and glass are separated. After disassembly using the above method, some of the decomposition products are in the form of particles (such as silicon particles or EVA particles), while others are in the form of ribbons or strips (such as solder ribbons), so it is necessary to separate the decomposition products.

[0005] CN217664711U discloses a sorting device for glass particles and silicon wafer particles. This device is based on the fact that the thickness of glass particles and silicon wafer particles is different, and the thickness of glass particles is many times that of silicon wafer particles. Therefore, by utilizing the difference in thickness, when the glass particles and silicon wafer particles are displaced to the input port of the second discharge hopper, the silicon wafer particles pass through the gap between the second discharge hopper and the belt conveyor mechanism and enter the first discharge hopper, but the glass particles are blocked by the second discharge hopper and cannot pass through the gap between the second discharge hopper and the belt conveyor mechanism to enter the first discharge hopper.

[0006] Although the sorting device described above can separate glass particles and silicon wafer particles, it cannot separate the solder ribbons because the disassembled photovoltaic modules also contain solder ribbons. The thickness of the solder ribbons is based on the distance between the glass and the silicon wafers. Utility Model Content

[0007] This invention provides a vibratory air separation device for photovoltaic material recycling, which can separate glass, silicon wafers and solder ribbons.

[0008] The technical solutions to the above technical problems are as follows:

[0009] A vibrating air classifier for photovoltaic material recycling includes a frame, a screen assembly, and a feeding hopper. The screen assembly is fitted to the frame and is inclined with one end higher than the other. The feeding hopper is installed on the upper part of the frame. The device also includes an eccentric motor, a first connecting rod assembly, a second connecting rod assembly, a first discharge chute, a second discharge chute, and a fan. One end of the first connecting rod assembly is connected to the torque output end of the eccentric motor, and the other end is connected to the middle of the screen assembly. One end of the second connecting rod assembly is connected to the frame, and the other end is connected to the end of the screen assembly. The first discharge chute is connected to one end of the screen assembly, and the second discharge chute is connected to the other end of the screen assembly. The fan is located below the screen assembly, and the fan's outlet corresponds to the screen holes of the screen assembly.

[0010] Furthermore, the screen assembly includes a frame, a screen body, a first support rod, and a second support rod. The screen body is fixed to the frame, the first support rod is located in the middle of the frame and passes through the frame, the second support rod is located in the middle of the frame and passes through the frame, the other end of the first connecting rod assembly is connected to the first support rod, and the other end of the second connecting rod assembly is connected to the end of the second support rod.

[0011] Furthermore, the screen assembly also includes a cover, the axial direction of the screen holes on the screen body is inclined to the axial direction of the screen body, a cover is provided above each screen hole, and an input port for the welding strip to enter is formed between the cover and the screen hole.

[0012] Furthermore, the screen assembly also includes a buffer sleeve, with the buffer sleeve installed at the end of the first support rod and / or the second support rod.

[0013] Furthermore, the first linkage assembly includes a first linkage and a first sleeve. One end of the first linkage is connected to an eccentric motor, and the other end of the first linkage is connected to the first sleeve. The first sleeve is fitted around the middle of the screen assembly.

[0014] Furthermore, the second connecting rod assembly includes a second connecting rod, a second clamping sleeve, a mandrel, a bushing, and a first bearing. One end of the second connecting rod is connected to the second clamping sleeve, the second clamping sleeve is fitted onto the mandrel, the mandrel is mounted on the frame, the other end of the second connecting rod is fixed to the bushing, the bushing is fitted onto the first bearing, and the first bearing is connected to the end of the screen assembly.

[0015] Furthermore, it also includes a dust suction port, which is located on the frame and above the screen assembly.

[0016] In use, this invention involves feeding a mixture of glass, solder ribbon, and silicon wafers into a hopper. The mixture slides down the hopper to the center of a screen assembly. An eccentric motor then operates, outputting torque to rotate the first connecting rod assembly. This first connecting rod assembly causes the screen assembly to oscillate reciprocally. Airflow from a blower passes through the screen holes of the screen assembly, acting on the lightest component, the silicon wafer. This airflow causes the silicon wafer to move from the center of the screen assembly towards the second discharge chute, where it is finally output. Due to the presence of glass particles and solder ribbon in the mixture... The weight of the ribbon is greater than that of the silicon wafer. Therefore, the force of the airflow cannot move the glass particles and the ribbon towards the second discharge chute. During the reciprocating swing of the screen assembly, the glass particles and the ribbon in the mixture move from the middle of the screen assembly towards the direction of the first discharge chute. During this process, because the thickness of the glass particles is greater than that of the ribbon, the glass particles cannot enter the screen holes. However, the ribbon, which is thinner than the glass particles and heavier than the silicon wafer, passes through the screen holes and falls below the screen assembly and is collected. The glass particles are finally output from the first discharge chute. Attached Figure Description

[0017] Figure 1 This is a front view of a vibratory air classifier for recycling photovoltaic materials.

[0018] Figure 2 This is a three-dimensional view of a vibratory air classifier for photovoltaic material recycling.

[0019] Figure 3 This is a three-dimensional view of the screen assembly in the first direction.

[0020] Figure 4 This is a perspective view of the screen assembly in the second direction.

[0021] Figure 5 This is a schematic diagram of the first link assembly.

[0022] Figure 6 This is an assembly drawing of the second link assembly and the frame.

[0023] Figure 7 This is a schematic diagram of the fan casing.

[0024] Labels in the attached diagram:

[0025] Frame 1, screen assembly 2, frame 2a, screen body 2b, first support rod 2c, second support rod 2d, cover 2e, inlet 2f, buffer sleeve 2g, baffle 2h, feeding hopper 3, eccentric motor 4, first connecting rod assembly 5, first connecting rod 5a, first clamp 5b, second connecting rod assembly 6, second connecting rod 6a, second clamp 6b, spindle 6c, bushing 6d, second bearing 6e, first discharge chute 7, second discharge chute 8, fan 9, housing 9a, protective plate 9b, first cavity 9c, second cavity 9d, dust suction port 10. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 7 As shown, the vibrating air separation device for photovoltaic recycling materials of this utility model includes a frame 1, a screen assembly 2, and a feeding hopper 3. The screen assembly 2 is fitted with the frame 1 and is inclined with one end higher than the other. The feeding hopper 3 is installed on the upper part of the frame 1. It also includes an eccentric motor 4, a first connecting rod assembly 5, a second connecting rod assembly 6, a first discharge chute 7, a second discharge chute 8, and a fan 9. One end of the first connecting rod assembly 5 is connected to the torque output end of the eccentric motor 4, and the other end of the first connecting rod assembly 5 is connected to the middle of the screen assembly 2. One end of the second connecting rod assembly 6 is connected to the frame 1, and the other end of the second connecting rod assembly 6 is connected to the end of the screen assembly 2. The first discharge chute 7 is connected to one end of the screen assembly 2, and the second discharge chute 8 is connected to the other end of the screen assembly 2. The fan 9 is located below the screen assembly 2, and the air outlet of the fan 9 corresponds to the screen hole of the screen assembly 2.

[0028] The blower 9 consists of a housing 9a and a blower body installed inside the housing 9a. A protective plate 9b is provided inside the housing 9a, which divides the inner cavity of the housing 9a into a first cavity 9c and a second cavity 9d. The blower body is located in the first cavity 9c. The protective plate 9b is arc-shaped and blocks part of the blower body. Before the airflow generated by the blower body passes through the screen holes of the screen body 2b, the force of the airflow is greater than the weight of the welding strip. Therefore, the welding strip moves towards the weaker airflow direction away from the air outlet of the first cavity 9c under the action of the airflow and eventually falls into the second cavity 9d. This prevents the welding strip from falling into the first cavity 9c and causing obstruction to the blower body. The operator can collect the welding strip from the second cavity 9d.

[0029] In use, this invention involves feeding a mixture of glass, solder ribbon, and silicon wafers into the feeding hopper 3. The mixture slides down the feeding hopper 3 to the middle of the screen assembly 2. The eccentric motor 4 operates, outputting torque to rotate the first connecting rod assembly 5. The first connecting rod assembly 5 drives the screen assembly 2 to oscillate back and forth. The airflow from the blower 9 passes through the screen holes of the screen assembly 2, acting on the lightest silicon wafer, causing it to move from the middle of the screen assembly 2 towards the second discharge chute 8. Finally, the silicon wafer is output from the second discharge chute 8. Due to the glass particles in the mixture... The glass particles and solder ribbons are heavier than silicon wafers, so the airflow force cannot move them toward the second discharge chute 8. During the reciprocating swing of the screen assembly 2, the glass particles and solder ribbons in the mixture move from the middle of the screen assembly 2 toward the first discharge chute 7. During this process, because the thickness of the glass particles is greater than that of the solder ribbons, the glass particles cannot enter the screen holes. However, the solder ribbons, which are thinner than the glass particles and heavier than silicon wafers, pass through the screen holes and fall below the screen assembly 2 and are collected. The glass particles are finally output from the first discharge chute 7.

[0030] The screen assembly 2 includes a frame 2a, a screen body 2b, a first support rod 2c, and a second support rod 2d. The screen body 2b is fixed to the frame 2a. The first support rod 2c is located in the middle of the frame 2a and passes through the frame 2a. The second support rod 2d is located in the middle of the frame 2a and passes through the frame 2a. The other end of the first connecting rod assembly 5 is connected to the first support rod 2c, and the other end of the second connecting rod assembly 6 is connected to the end of the second support rod 2d. The screen holes on the screen body 2b are arranged in a rectangular array, that is, it includes multiple rows of screen holes, and the spacing between any two screen holes in each row is equal.

[0031] The screen assembly 2 also includes a cover 2e. The axial direction of the screen holes on the screen body 2b is inclined to the axial direction of the screen body 2b. A cover 2e is provided above each screen hole, and an inlet 2f for the solder ribbon to enter is formed between the cover 2e and the screen hole. The cover 2e, on the one hand, blocks the solder ribbon, which facilitates the solder ribbon to enter the screen hole through the inlet 2f. On the other hand, it can prevent glass particles from entering the screen hole and can also change the direction of airflow, which is beneficial for the airflow to act on the silicon wafer.

[0032] The screen assembly 2 also includes a buffer sleeve 2g. The buffer sleeve 2g is installed at the end of the first support rod 2c and / or the second support rod 2d. The buffer sleeve 2g helps to reduce the impact of the first connecting rod assembly 5 on the screen assembly 2. The screen assembly 2 also includes a baffle 2h. The baffle 2h is located on both sides of the screen body 2b. The baffle 2h is fixed to the frame 2a or the screen body 2b. The baffle 2h blocks the material from leaking from the side of the screen assembly 2.

[0033] The first connecting rod assembly 5 includes a first connecting rod 5a and a first clamping sleeve 5b. One end of the first connecting rod 5a is connected to the eccentric motor 4, and the other end of the first connecting rod 5a is connected to the first clamping sleeve 5b. The first clamping sleeve 5b is fitted onto the middle of the screen assembly 2. The first clamping sleeve 5b is fitted onto the buffer sleeve 2g.

[0034] The second connecting rod assembly 6 includes a second connecting rod 6a, a second clamping sleeve 6b, a spindle 6c, a bushing 6d, and a first bearing (not shown in the figure). One end of the second connecting rod 6a is connected to the second clamping sleeve 6b, which is fitted onto the spindle 6c. The spindle 6c is mounted on the frame 1, which has mounting holes. The spindle 6c passes through the mounting holes on the frame 1 and is clearance-fitted with them. The other end of the second connecting rod 6a is fixed to the bushing 6d, which is fitted onto the first bearing. The first bearing is connected to the end of the screen assembly 2. The first bearing is connected to the second support rod 2d.

[0035] This utility model also includes a dust suction port 10, which is disposed on the frame 1 and located above the screen assembly 2. An air extractor is installed at the dust suction port 10. Since dust inevitably exists in the mixture, it will be blown away by the airflow and reciprocating vibration during the sorting process. The airflow generated by the air extractor carries away the dust, reducing the pollution of the air by the dust.

Claims

1. A vibrating air separation device for photovoltaic recycling materials, comprising a frame (1), a screen assembly (2), and a feeding hopper (3), wherein the screen assembly (2) is fitted with the frame (1), the screen assembly (2) is inclined with one end higher than the other, and the feeding hopper (3) is installed on the upper part of the frame (1), characterized in that, It also includes an eccentric motor (4), a first connecting rod assembly (5), a second connecting rod assembly (6), a first discharge chute (7), a second discharge chute (8), and a fan (9). One end of the first connecting rod assembly (5) is connected to the torque output end of the eccentric motor (4), and the other end of the first connecting rod assembly (5) is connected to the middle of the screen assembly (2). One end of the second connecting rod assembly (6) is connected to the frame (1), and the other end of the second connecting rod assembly (6) is connected to the end of the screen assembly (2). The first discharge chute (7) is connected to one end of the screen assembly (2), and the second discharge chute (8) is connected to the other end of the screen assembly (2). The fan (9) is located below the screen assembly (2), and the air outlet of the fan (9) corresponds to the screen hole of the screen assembly (2).

2. The vibratory air separation device for photovoltaic recycled materials according to claim 1, characterized in that, The screen assembly (2) includes a frame (2a), a screen body (2b), a first support rod (2c), and a second support rod (2d). The screen body (2b) is fixed to the frame (2a). The first support rod (2c) is located in the middle of the frame (2a) and passes through the frame (2a). The second support rod (2d) is located in the middle of the frame (2a) and passes through the frame (2a). The other end of the first connecting rod assembly (5) is connected to the first support rod (2c). The other end of the second connecting rod assembly (6) is connected to the end of the second support rod (2d).

3. The vibratory air separation device for photovoltaic recycled materials according to claim 2, characterized in that, The screen assembly (2) also includes a cover (2e), the axial direction of the screen holes on the screen body (2b) is inclined to the axial direction of the screen body (2b), a cover (2e) is provided above each screen hole, and an input port (2f) for the welding strip to enter is formed between the cover (2e) and the screen hole.

4. The vibratory air separation device for photovoltaic recycled materials according to claim 2, characterized in that, The screen assembly (2) also includes a buffer sleeve (2g), and the buffer sleeve (2g) is installed at the end of the first support rod (2c) and / or the second support rod (2d).

5. The vibratory air separation device for photovoltaic recycled materials according to claim 1, characterized in that, The first link assembly (5) includes a first link (5a) and a first sleeve (5b). One end of the first link (5a) is connected to the eccentric motor (4), and the other end of the first link (5a) is connected to the first sleeve (5b). The first sleeve (5b) is fitted in the middle of the screen assembly (2).

6. The vibratory air separation device for photovoltaic recycled materials according to claim 1, characterized in that, The second link assembly (6) includes a second link (6a), a second sleeve (6b), a spindle (6c), a bushing (6d), and a first bearing. One end of the second link (6a) is connected to the second sleeve (6b), the second sleeve (6b) is fitted on the spindle (6c), the spindle (6c) is mounted on the frame (1), and the other end of the second link (6a) is fixed to the bushing (6d). The bushing (6d) is fitted on the first bearing, and the first bearing is connected to the end of the screen assembly (2).

7. The vibratory air separation device for photovoltaic recycled materials according to any one of claims 1 to 6, characterized in that, It also includes a dust suction port (10), which is set on the frame (1) and located above the screen assembly (2).

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