Automatic sorting equipment for photovoltaic glass

Abstract

The present invention relates to the technical field of photovoltaic component recycling, and discloses an automatic sorting equipment for photovoltaic glass, including an optical sorter, the optical sorter including a conveying device, the conveying device including a first feeding device, a primary screening device, a second feeding device, and a slide; the primary screening device includes a screen drum, the screen drum includes a filter cylinder, a tipping bucket cavity, and a plurality of tipping bucket cavities are arranged on the outer wall surface of the filter cylinder, the first feeding device is used to transfer materials into the tipping bucket cavity, and materials with a diameter smaller than the diameter of the filter holes on the filter cylinder pass through the filter cylinder into the second feeding device, and the second feeding device is used to convey materials to the slide, wherein materials with a diameter larger than the diameter of the filter holes on the filter cylinder are fed by the tipping bucket cavity into an area outside the second feeding device, and a guide baffle is provided in the filter cylinder for guiding the materials in the filter cylinder to the second feeding device. The advantage is that photovoltaic glass can be pre-screened during the photovoltaic glass sorting process, thereby improving the sorting accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic component recycling, and in particular to an automatic sorting device for photovoltaic glass. Background Art

[0002] At present, physical separation is mostly used when recycling photovoltaic modules. The aluminum frame, glass and junction box are disassembled manually to obtain frameless modules. The frameless modules are then crushed to obtain broken glass and broken solar cells. In the existing technology, color sorters are usually used to screen and separate them. However, color sorters rely on the gas ejected from the spray valve to sort the mixed fragments. Some larger fragments cannot be sprayed away from the original path, resulting in the fragments after sorting still not being effectively separated. Therefore, in the existing sorting process, the sorted fragments need to be further screened, which greatly reduces the recycling efficiency.

[0003] In summary, there is an urgent need for an automatic sorting device for photovoltaic glass that can pre-screen the crushed photovoltaic glass during the photovoltaic glass sorting process, sort out the larger fragments in advance, and improve the final sorting accuracy. Summary of the Invention

[0004] In view of the problem of low sorting accuracy of large photovoltaic glass fragments in the existing technology, an automatic sorting equipment for photovoltaic glass is proposed, which can pre-screen the crushed photovoltaic glass during the photovoltaic glass sorting process, sort out the larger fragments in advance, and improve the final sorting accuracy.

[0005] In order to solve the above problems, the technical solution of the present invention is:

[0006] An automatic sorting device for photovoltaic glass, including an optical sorter, the optical sorter including a conveying device, the conveying device including a first feeding device, a primary screening device, a second feeding device, and a slide; the primary screening device including a screen drum, the screen drum rotating around its axis, the screen drum including a filter cylinder and a tipping bucket cavity, a plurality of the tipping bucket cavities being arranged on the outer wall surface of the filter cylinder, the first feeding device being used to transfer material into the tipping bucket cavity, the material having a diameter smaller than the diameter of the filter hole on the filter cylinder passing through the filter cylinder into the second feeding device, the second feeding device being used to convey material to the slide, wherein the material having a diameter larger than the diameter of the filter hole on the filter cylinder is fed by the tipping bucket cavity into an area outside the second feeding device, the filter cylinder being provided with a guide baffle, the guide baffle being used to guide the material in the filter cylinder to the second feeding device.

[0007] As a preferred technical solution, the primary screening device further includes a collecting box, which is used to collect materials sent out from the dump bucket cavity.

[0008] As a preferred technical solution, the tipping bucket chambers are provided with 6 groups, which are evenly arranged around the outer wall of the filter cylinder.

[0009] As a preferred technical solution, a splash guard is provided on the screen drum.

[0010] As a preferred technical solution, the screen drum is provided with two groups, including a first screen drum and a second screen drum. The first screen drum is used to receive the material on the first feeding device, and the second screen drum is used to receive the material on the first screen drum.

[0011] As a preferred technical solution, the diameter of the first screen drum is smaller than the diameter of the second screen drum.

[0012] As a preferred technical solution, the first screen drum and the second screen drum rotate in opposite directions about their respective axes, and one end of the guide baffle in the first screen drum is located above the axis of the second screen drum and crosses the axis of the second screen drum.

[0013] As a preferred technical solution, the first screen drum and the second screen drum rotate in the same direction about their respective axes, and one end of the guide baffle in the first screen drum is located above the axis of the second screen drum and does not cross the axis of the second screen drum.

[0014] As a preferred technical solution, the first feeding device and the second feeding device are both vibrating feeders.

[0015] Beneficial effects of the present invention:

[0016] The automatic sorting equipment for photovoltaic glass described in the present invention includes an optical sorter, and the conveying device of the optical sorter includes a first feeding device, a primary screening device, a second feeding device, and a slide; the primary screening device includes a screen drum, and the screen drum is composed of a filter cylinder and a bucket cavity, and can rotate around its central axis. The material in the first feeding device is conveyed to the bucket cavity, and the material that meets the requirements can directly pass through the filter cylinder into the second feeding device, and the larger material is left in the bucket cavity. As the screen drum rotates, it first leaves the optical sorter sorting process to avoid entering the subsequent spray valve sorting process, which causes impurities in the sorted material. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the automatic sorting equipment for photovoltaic glass according to the present invention;

[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram in the middle;

[0019] Figure 3 This is a partial cross-sectional schematic diagram of the screen drum of the automatic sorting equipment for photovoltaic glass according to the present invention;

[0020] Figure 4 This is a schematic diagram of another primary screening device of the automatic sorting equipment for photovoltaic glass according to the present invention;

[0021] Figure 5 This is a partial cross-sectional schematic diagram of another primary screening device of the automatic sorting equipment for photovoltaic glass described in the present invention.

[0022] The reference numerals and components in the drawings are as follows:

[0023] 1. First feeding device; 2. Primary screening device; 3. Second feeding device; 4. Slide; 5. Feed hopper; 6. Diverter; 21. Screen drum; 22. Collecting box; 23. Splash shield; 211. Screen cylinder; 212. Tipping bucket chamber; 213. Partition; 214. Fixed baffle; 215. Guide baffle; 216. First screen drum; 217. Second screen drum. DETAILED DESCRIPTION

[0024] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] To better understand the automatic sorting equipment for photovoltaic glass provided in this embodiment, the following first briefly introduces existing automatic sorting equipment for photovoltaic glass. Existing automatic sorting equipment for photovoltaic glass generally refers to an optical sorter or color sorter. Specifically, it includes a feeding system responsible for evenly and stably conveying materials to the detection area of ​​the color sorter, ensuring that the materials pass through the detection channel in a single layer and stable state; an optical detection system composed of a light source, a lens, and a photoelectric sensor. The light emitted by the light source illuminates the materials, and the light reflected by the materials is focused by the lens onto the photoelectric sensor. The photoelectric sensor converts the optical signal into an electrical signal and transmits it to an information processing system. The information processing system is used to high-speed process and analyze the electrical signal transmitted by the photoelectric sensor, determine the color, shape, and other characteristics of the materials according to preset standards, and issue control instructions to the separation execution system. The separation execution system is generally composed of solenoid valves, nozzles, etc. According to the instructions of the information processing system, it sprays airflow at different-colored particles at appropriate times to separate them from the material flow and achieve material sorting. However, it is difficult to change the movement path of larger materials by spraying airflow, which reduces the final sorting accuracy.

[0026] Please see the attached Figure 1 , Figure 1 It is a three-dimensional schematic diagram of the automatic sorting equipment for photovoltaic glass according to the present invention; in order to solve the above problems, the present invention provides an automatic sorting equipment for photovoltaic glass, including an optical sorter, the optical sorter including a feed hopper 5, a conveying device, a light source assembly, an image sensor, a background plate, an intelligent data processing system, a spray valve, and a diverter device 6. The feed hopper 5 is used to convey materials to the conveying device, the feed hopper 5 is used to store materials and distribute materials to the conveying device, the conveying device conveys the materials in a single layer and stable state to the position of the light source assembly and the image sensor, and controls the diversion of materials on the diverter device 6 through the intelligent data processing system to complete the sorting of materials. It is a prior art.

[0027] Please see the attached Figure 2 , Figure 2 for Figure 1A partial enlarged schematic diagram at center A; in the present invention, the conveying device includes a first feeding device 1, a primary screening device 2, a second feeding device 3, and a slide 4; the first feeding device 1 is a vibrating feeder located below the feed hopper 5, for conveying materials to the primary screening device 2; the primary screening device 2 includes a screen drum 21, the screen drum 21 includes a filter cylinder 211, a dump bucket cavity 212, the filter cylinder 211 is an annular cylindrical structure with filter holes on the wall, the filter cylinder 211 is provided with a plurality of partitions 213 arranged axially around it, and circular fixed baffles 214 are provided on both sides of the filter cylinder 211, and the two adjacent partitions 213 and the fixed baffles 214 on both sides and the two partitions 21 3. The outer wall surface of the filter cylinder 211 between the two parts constitutes the tipping bucket chamber 212. The materials that cannot pass through the filter holes are temporarily stored in the tipping bucket chamber 212 and move with the tipping bucket chamber 212. The filter cylinder 211 and the partition 213 thereon rotate around their axis driven by the motor; the materials that pass through the filter holes first enter the filter cylinder 211, and then pass out of the filter cylinder 211 and enter the second feeding device 3. In order to guide the flow path of the material in the filter cylinder 211 so that it can smoothly enter the second feeding device 3, a guide baffle 215 is provided therein. The second feeding device 3 is also a vibrating feeder, which transmits the material passing through the filter cylinder 211 to the slide 4 to complete the subsequent sorting work.

[0028] Specifically, in the present embodiment, the rotation direction of the screen cylinder 211 is counterclockwise, and the first feeding device 1 is arranged on the right side of the screen cylinder 211, that is, on the side opposite to the rotation direction of the top of the screen cylinder 211. At this time, preferably, the outlet of the first feeding device 1 is located above the screen drum 21 and on the right side of the axis, so that the material coming out of the first feeding device 1 falls into the tipping bucket 212 on the upper right side of the screen cylinder 211. As the screen cylinder 211 rotates, the material in the tipping bucket 212 has sufficient time to be filtered; the second feeding device 3 is located below the screen drum 21, and is located on the right side of the axis, that is, on the side pointed by the rotation tangent direction of the bottom of the screen cylinder 211. Please refer to the attached figure. Figure 3 , Figure 3 This is a partial cross-sectional schematic diagram of the screen drum of the automatic sorting equipment for photovoltaic glass according to the present invention. The guide baffle 215 is closely attached to the inner wall of the lower left area of ​​the filter cylinder 211, covering the lower left 1 / 4 of the arc area from an axial view. Preferably, the inlet of the second feeding device 3 is located below the filter cylinder 211 and to the right of the axis. At the same time, it should be ensured that the material discharged by the guide baffle 215 falls onto the second feeding device 3. When the tipping bucket chamber 212 filled with material is flipped to the lower left of the filter cylinder 211, the material in the tipping bucket chamber 212 is poured out of the tipping bucket chamber 212, and the poured material does not enter the second feeding device 3.

[0029] Preferably, in order to collect the materials filtered out from the bucket cavity 212, the primary screening device 2 also includes a collecting box 22, which is a box structure. In this embodiment, the opening of the collecting box 22 is located below the bucket cavity 212 at the lower left of the primary screening device 2, so that the materials transferred to the bucket cavity 212 at the lower left are poured out and fall directly into the collecting box 22.

[0030] Preferably, in this embodiment, there are 6 groups of the tipping hopper cavities 212, which are evenly arranged around the outer wall of the filter cylinder 211, that is, 6 partitions 213 are arranged at equal intervals along the radial direction on the surface of the filter cylinder 211. The 6 groups of tipping hopper cavities 212 ensure that during the rotation process, the tipping hopper cavities 212 located under the outlet of the first feeding device 1 are always in a state of opening upward to receive materials.

[0031] Preferably, in order to prevent the material output from the first feeding device 1 from being directly thrown out of the area outside the primary screening device 2, a splash guard 23 is provided on the screen drum 21. Specifically, in this embodiment, the splash guard 23 is arranged at the upper left of the primary screening device 2, facing the outlet of the first feeding device 1. The splash guard 23 can also control the position of the bucket cavity 212 into which the material output from the first feeding device 1 enters, so that the material in the bucket cavity 212 has sufficient time to be filtered.

[0032] The method of using the present invention is as follows: the material, i.e. the crushed photovoltaic glass, is conveyed into the feed hopper 5 and falls from the outlet of the feed hopper 5 onto the first feeding device 1. Under the guidance of the vibrating feeder of the first feeding device 1, the material is spread out and conveyed in an orderly manner to the rotating primary screening device 2. In this embodiment, the material falls into the tipping bucket cavity 212 on the upper right side of the filter cylinder 211. For materials with a higher horizontal speed when falling, they will also fall into the tipping bucket cavity 212 on the upper right side under the obstruction of the splash guard 23. A part of the material in the tipping bucket cavity 212 enters the interior of the filter cylinder 211 through the filter holes on the filter cylinder 211, and continues to pass through the filter holes from the inside to the outside and passes through the filter again. The mesh cylinder 211 falls onto the second feeding device 3. A guide baffle 215 is provided at the lower left bottom of the inner wall of the filter cylinder 211. The material falling on the guide baffle 215 is eventually guided to the filter hole of the filter cylinder 211 located above the second feeding device 3; and the material that cannot pass through the filter hole is retained in the bucket cavity 212. As the filter cylinder 211 rotates, it rotates in the direction away from the second feeding device 3, and during the rotation, the material in the bucket cavity 212 moves in the bucket cavity 212, thereby improving the adequacy of the filtration. When the bucket cavity 212 begins to rotate below the axis, the material therein begins to detach from the top of the bucket cavity 212 and falls into the collection box 22 below.

[0033] The automatic sorting equipment for photovoltaic glass described in the present invention includes an optical sorter, and the conveying device of the optical sorter includes a first feeding device 1, a primary screening device 2, a second feeding device 3, and a slide 4; the primary screening device 2 includes a screen drum 21, and the screen drum 21 is composed of a filter cylinder 211 and a tipping bucket cavity 212, and can rotate around its central axis. The material in the first feeding device 1 is conveyed to the tipping bucket cavity 212, and the material that meets the requirements can directly pass through the filter cylinder 211 and enter the second feeding device 3, and the larger material is left in the tipping bucket cavity 212, and as the screen drum 21 rotates, it first leaves the optical sorter sorting process to avoid entering the subsequent spray valve sorting process, which causes impurities in the sorted material.

[0034] Example 2: As the photovoltaic glass fragments are irregular diamond-shaped, they do not have the fluidity of liquid, powder, sphere, etc. During the sorting process, when larger photovoltaic glass fragments block some filter holes, the materials will be stuck in the filter holes below the tipping bucket chamber 212, and even if they are turned over, they cannot be cleared. In addition, the first feeding device 1 continues to feed materials into the tipping bucket chamber 212, and the newly entered materials will aggravate the blockage, causing the blocked filter holes in the tipping bucket chamber 212 to be mixed with completely broken photovoltaic glass, resulting in reduced sorting accuracy. In order to solve this problem and improve the efficiency of filtering and sorting, please refer to the attached Figure 4 , Figure 4 This is a schematic diagram of another primary screening device of the automatic sorting equipment for photovoltaic glass described in the present invention; in this embodiment, the screen roller 21 of the primary screening device 2 is provided with two groups, namely the first screen roller 216 and the second screen roller 217, the first screen roller 216 and the second screen roller 217 are distributed in a trapezoidal shape, the first screen roller 216 is used to receive the material on the first feeding device 1, and the second screen roller 217 is used to receive the material on the first screen roller 216, so that the photovoltaic glass mixed in the bucket cavity 212 of the first screen roller 216 is subjected to secondary screening in the second screen roller 217.

[0035] In order to allow the material in the first screen drum 216 to smoothly enter the second screen drum 217, the diameter of the first screen drum 216 is smaller than the diameter of the second screen drum 217, that is, the partition 213 on the filter cylinder 211 of the first screen drum 216 is shorter than the partition 213 on the second screen drum 217, so that the parabola of the material falling from the first screen drum 216 is located in the tipping bucket cavity 212 of the second screen drum 217.

[0036] Preferably, in this embodiment, the first screen drum 216 and the second screen drum 217 rotate in opposite directions about their respective axes. Specifically, the first screen drum 216 and the second screen drum 217 are engaged with each other through a gear set and driven by a motor.

[0037] In this embodiment, one end of the guide baffle 215 in the first screen drum 216 is located above the axis of the second screen drum 217 and crosses the axis of the second screen drum 217. Specifically, the guide baffle 215 in the first screen drum 216 is a flat plate structure, one side of which is located on the left side of the filter cylinder 211 and flush with the axis and fits the inner wall of the filter cylinder 211, and the other side is located below the plane where the axis is located, and preferably, close to the right side of the filter cylinder 211, leaving time and space for filtration for the material entering the second screen drum 217; the guide baffle 215 in the second screen drum 217 is set in the same position as the guide baffle 215 in Example 1.

[0038] In some other embodiments, the first screen drum 216 and the second screen drum 217 rotate in the same direction about their respective axes, and one end of the guide baffle 215 in the first screen drum 216 is located above the axis of the second screen drum 217 and does not cross the axis of the second screen drum 217.

[0039] Please see the attached Figure 5 , Figure 5 It is a partial cross-sectional schematic diagram of another primary screening device of the automatic sorting equipment for photovoltaic glass described in the present invention; the usage of the present invention: the material of the first feeding device 1 is transported in an orderly manner to the rotating first screen drum 216. In this embodiment, the material falls into the tipping bucket 212 on the upper right of the filter cylinder 211, and a part of the material in the tipping bucket 212 enters the interior of the filter cylinder 211 through the filter holes on the filter cylinder 211, and continues to pass through the filter holes from the inside to the outside along the guide baffle 215 therein, passes through the filter cylinder 211 again, falls onto the second screen drum 217, and continues to pass through the filter cylinder 2 of the second screen drum 217 to complete the screening; the material in the tipping bucket 212 on the first screen drum 216 can be screened again by the second screen drum 217.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the principles of the present invention. These improvements and supplements should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic sorting device for photovoltaic glass, comprising an optical sorter, wherein the optical sorter comprises a conveying device, characterized in that: The conveying device includes a first feeding device, a primary screening device, a second feeding device, and a slide; the primary screening device includes a screen drum, which rotates around its axis, and the screen drum includes a filter cylinder and a tipping bucket cavity. Several of the tipping bucket cavities are arranged on the outer wall of the filter cylinder. The first feeding device is used to transfer the material into the tipping bucket cavity. The material with a diameter smaller than the diameter of the filter hole on the filter cylinder passes through the filter cylinder and enters the second feeding device. The second feeding device is used to convey the material to the slide, wherein the material with a diameter larger than the diameter of the filter hole on the filter cylinder is sent by the tipping bucket cavity to an area outside the second feeding device. A guide baffle is provided in the filter cylinder, and the guide baffle is used to guide the material in the filter cylinder to the second feeding device. The conveying device allows the material with a diameter larger than the diameter of the filter hole on the filter cylinder to first separate from the optical sorting machine sorting process to avoid entering the subsequent spray valve sorting process, resulting in impurities in the sorted material.

2. The automatic sorting equipment for photovoltaic glass according to claim 1, characterized in that: The primary screening device further comprises a collecting box, which is used to collect materials sent out from the dump bucket cavity.

3. The automatic sorting equipment for photovoltaic glass according to claim 1, characterized in that: The tipping bucket chambers are provided with 6 groups, which are evenly arranged around the outer wall of the filter cylinder.

4. The automatic sorting equipment for photovoltaic glass according to claim 1, characterized in that: The screen drum is provided with a splash-proof baffle.

5. The automatic sorting equipment for photovoltaic glass according to claim 1, characterized in that: The screen drum is provided with two groups, including a first screen drum and a second screen drum. The first screen drum is used to receive the material on the first feeding device, and the second screen drum is used to receive the material on the first screen drum.

6. The automatic sorting equipment for photovoltaic glass according to claim 5, characterized in that: The diameter of the first screen drum is smaller than the diameter of the second screen drum.

7. The automatic sorting equipment for photovoltaic glass according to claim 5, characterized in that: The first screen drum and the second screen drum rotate in opposite directions about their respective axes, and one end of the guide baffle in the first screen drum is located above the axis of the second screen drum and crosses the axis of the second screen drum.

8. The automatic sorting equipment for photovoltaic glass according to claim 5, characterized in that: The first screen drum and the second screen drum rotate in the same direction about their respective axes, and one end of the guide baffle in the first screen drum is located above the axis of the second screen drum and does not cross the axis of the second screen drum.

9. The automatic sorting equipment for photovoltaic glass according to claim 1, characterized in that: The first feeding device and the second feeding device are both vibrating feeders.

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