Recycling and reusing system for waste glass

Abstract

The invention discloses a waste glass recycling and reusing system, and belongs to the technical field of photovoltaic glass production. Comprising a feeding conveying device, a layered conveying device, a discharging conveying device and a crushing device, and the crushing device comprises an input roller way, an upper crusher, a receiving bin, a crushed material conveying structure and a lower crusher; the upper pulverizator is located above the rear portion of the lower pulverizator, and the lower portion of the upper pulverizator rotates forwards. A boss is arranged on the front bin wall of the receiving bin, the rear side of the boss is a tip, and the projection of the boss is located on the front side or adjacent front of the lower crusher; the material receiving bin and the boss are both made of hard alloy, and a plurality of grooves are formed in the four bin walls of the material receiving bin side by side up and down. The upper crusher comprises a roller arranged in the left-right direction and a plurality of first striking assemblies arranged on the roller side by side in the left-right direction, each first striking assembly comprises a circular ring coaxially arranged on the circumferential face of the roller and two tip protrusions at the two opposite ends of the circular ring, the tip protrusions of all the first striking assemblies are distributed in a spiral line mode, and the spiral line and the roller are coaxially arranged.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic glass production technology, specifically to a waste glass recycling and reuse system, particularly for recycling photovoltaic glass. The crushed photovoltaic glass can be directly sent to the batching device without further crushing and iron removal, and the iron content of the processed crushed glass is less than 90 ppm. Background Technology

[0002] Photovoltaic glass is a special type of glass used in solar photovoltaic modules. It is mainly divided into two categories: crystalline silicon photovoltaic glass (including monocrystalline silicon and polycrystalline silicon) and thin-film photovoltaic glass. It is used in building-integrated photovoltaics (BIPV) applications such as solar smart windows and photovoltaic curtain walls. Its mainstream products include ultra-clear rolled glass and AR coated glass, which need to have high light transmittance and weather resistance to protect photovoltaic cells.

[0003] The production process of photovoltaic glass generally includes steps such as raw material crushing, weighing, mixing, melting, rolling, annealing, testing, and slitting. One or more glass sheets that fail the tests need to be sent to a crushing device.

[0004] For example, patent application number CN202121450618.X discloses a multi-level sorting system for raw glass sheets, including a glass conveying device, a detection device, a cutting device, a crushing device, a grading device, and a sampling inspection platform. The grading device consists of multiple grading units connected in series. The crushing device includes a front-layer conveying device, a crushing device, and a front upper-layer conveying structure and a front lower-layer conveying structure arranged side by side. The front upper-layer conveying structure and the front lower-layer conveying structure are located directly behind the front-layer conveying device and are both arranged in the front-back direction. The front-layer conveying device is arranged in the front-back direction, its front end is connected to the rear end of the glass conveying device, and its rotation is mounted on a corresponding flipping shaft. Its rear end can move up and down and is connected to the front end of the front upper-layer conveying structure and the front end of the front lower-layer conveying structure, respectively. The crushing device is located at the rear end of the front lower-layer conveying structure. The grading unit includes a rear-layer conveying device, a horizontal... The system includes a reversing conveyor structure and two parallel rear upper and lower conveyor structures, both located directly behind the rear layer conveyor and arranged along the front-to-back direction. The rear layer conveyor is arranged along the front-to-back direction, with its front end rotatably mounted on a corresponding flipping shaft and its rear end capable of vertical movement. The front end of the rear layer conveyor in the first-level grading unit is connected to the rear end of the front upper conveyor structure, and the front end of the rear layer conveyor in the remaining grading units is connected to the rear end of the previous level's rear lower conveyor structure. When the rear end of the rear layer conveyor moves vertically, it connects to the front end of the rear upper conveyor structure and the front end of the rear lower conveyor structure, respectively. The sampling platform is located at the rear end of the rear lower conveyor structure of the last grading unit. The rear end of the rear upper conveyor structure has a positioning baffle along the left-to-right direction and a transverse reversing conveyor structure that outputs the glass along the left-to-right direction at its rear.

[0005] The structure of the crushing device can be found in patent application number CN202021690440.1, which discloses a glass plate conveying device with crushing function, including a receiving hopper, a crushing conveyor, roller conveyor A, roller conveyor B, a crusher, and a reversing conveyor; the crushing conveyor is arranged below the receiving hopper; the reversing conveyor is mounted on the top of the receiving hopper via a frame; roller conveyor A is arranged at one end of the reversing conveyor; roller conveyor B is arranged at the other end of the reversing conveyor; the crusher is arranged below between the reversing conveyor and roller conveyor B; the crusher includes a mounting frame, a drive roller, and a mounting bracket. The system includes a crushing box, an active crushing roller, and a driven crushing roller. The crushing box is mounted at an angle on a mounting frame. Multiple drive rollers are mounted at an angle on a mounting frame on one side of the crushing box. Driven and active crushing rollers are mounted vertically within the crushing box on one side of the drive rollers via bearings. One end of the driven and active crushing rollers is meshed with each other via a gear transmission pair. A crushing motor is mounted on the crushing box on one side of the active crushing roller. The crushing motor is connected to one end of the active crushing roller via a sprocket and a transmission chain. The active crushing roller is connected to one end of a set of drive rollers via a transmission chain. Adjacent drive rollers are interconnected via transmission chains and sprockets.

[0006] Photovoltaic glass differs significantly from ordinary glass, primarily in its iron content. Photovoltaic glass (with an iron content of less than 150 ppm) achieves a high light transmittance of over 91.5% by reducing the iron content to about 1 / 10 or even lower than that of ordinary glass.

[0007] When using existing crushing and recycling equipment, a large amount of iron is introduced into the glass during the contact process with the crusher and receiving bin, which makes the crushed glass unrecyclable. Summary of the Invention

[0008] To address the aforementioned issues, photovoltaic glass is pulverized using three methods: 1) upper pulverizer with downward pressure; 2) boss impact pulverization (optional); and 3) conventional pulverization with a lower pulverizer. The lower pulverizer's rotation speed can be set relatively slowly (e.g., less than 250 r / min), and the spacing between impacting components can be set relatively wide (e.g., greater than 3 cm). The upper pulverizer employs a special design to minimize contact with the glass; the bosses have a sharp structure, minimizing contact with the glass; and grooves are incorporated into the receiving hopper (further reducing contact with the glass through the bosses). This is combined with material improvements (conventional improvements). The goal is to introduce virtually no or only trace amounts of iron during the pulverization process; the pulverized glass can be directly reused. The solution is as follows:

[0009] This invention provides a waste glass recycling and reuse system. The system includes a frame, a feeding conveyor 1, a layered conveyor 2, a discharging conveyor 3, and a crushing device 4. The feeding conveyor 1, layered conveyor 2, and discharging conveyor 3 are arranged sequentially from front to back on the frame. The crushing device 4 is located directly below the discharging conveyor 3. The layered conveyor 2 can rotate downwards to connect with the input roller conveyor 41 of the crushing device 4. The crushing device 4 includes an input roller arranged obliquely downwards from front to back. The system includes a feed roller conveyor 41, an upper crusher 42 at the rear end of the feed roller conveyor 41, a receiving hopper 43 below the upper crusher 42, and a crushed material conveying structure 47 directly below the receiving hopper 43. The receiving hopper 43 is a conical hopper that is wider at the top and narrower at the bottom. The crushed material conveying structure 47 delivers the crushed glass to the batching device of the glass furnace. A lower crusher 44 is located at the discharge port at the bottom of the receiving hopper 43. The upper crusher 42 is located at the rear of the receiving hopper 43, above and behind the lower crusher 44, and its lower part rotates forward. The front wall of the receiving hopper 43 is equipped with... There is at least one boss 45, the rear side of which is pointed and its rear projection is located in front of or adjacent to the lower crusher 44; the receiving bin 43 and the boss 45 are both made of cemented carbide, and the four walls of the receiving bin 43 are provided with multiple grooves arranged vertically and horizontally; the upper crusher 42 and the lower crusher 44 are both arranged horizontally, and the upper crusher 42 includes a roller arranged horizontally and a plurality of first impact components arranged horizontally and horizontally on it. The first impact assembly includes a ring coaxially arranged on the circumference of the drum and two pointed protrusions at its opposite ends. The pointed protrusions of all the first impact assemblies are distributed in a spiral line, which is coaxial with the drum. The lower end of the pointed protrusion at the bottom is located behind and below the input roller 41 and presses against the upper side of the glass sheet 5 output from the input roller 41. The lower crusher 44 includes a crushing shaft arranged in a left-right direction and a plurality of second impact assemblies arranged side by side on its upper left and right sides. The second impact assembly includes at least three impact arms evenly distributed around the crushing shaft.

[0010] Specifically, in this embodiment of the invention, the receiving bin 43 is a four-sided pyramidal bin arranged in the left-right direction, and its discharge port is a rectangular opening arranged in the left-right direction. Its front and rear bin walls are inclined in the front-back direction. There are two protrusions 45. The two protrusions 45 are arranged side by side, respectively located on the left and right sides of the front bin wall of the receiving bin 43. They are located on the upper or middle part of the front bin wall and are located above the left and right ends of the discharge port. The protrusions 45 are angular protrusions with their tops horizontally arranged. Their front side is fixed to the receiving bin 43, and their rear side is inclined downward from back to front. The projection of the rear end of its top is located in front of or adjacent to the lower crusher 44.

[0011] Specifically, in this embodiment of the invention, the lower crusher 44 and the discharge port of the receiving bin 43 are arranged adjacent to each other on their four sides. The second impact assembly includes an equilateral triangular frame and three impact arms evenly distributed around the crushing shaft. The equilateral triangular frame is coaxially arranged on the circumferential surface of the crushing shaft. The three impact arms are respectively located at the three vertices of the equilateral triangular frame, and the included angle between two adjacent impact arms is 120°. The impact arms are arranged radially along the crushing shaft, with their inner ends fixed to the corresponding vertices of the equilateral triangular frame and their outer ends having enlarged portions.

[0012] In this embodiment of the invention, the roller is located above and behind the rear end of the input roller conveyor 41; the pointed protrusion is an isosceles triangle, which is arranged radially along the roller, and its two sides smoothly transition with the annulus.

[0013] Furthermore, in this embodiment of the invention, the rotational speed of the upper pulverizer 42 is greater than that of the lower pulverizer 44, and the distance between two adjacent first impact components is greater than the distance between two adjacent second impact components.

[0014] Specifically, in this embodiment of the invention, the upper crusher 42 rotates at a speed of 300-600 r / min, and the lower crusher 44 rotates at a speed of 150-250 r / min; the distance between two adjacent first impact components is 5-15 cm, the distance between the tip of the protruding tip and the roller is 3-5 cm, and the distance between two adjacent second impact components is 3-7 cm; the angle between the wall of the receiving bin 43 and the vertical direction is 10-30°.

[0015] Furthermore, in this embodiment of the invention, the top of the receiving hopper 43 is provided with a protective cover 46; the protective cover 46 is arranged in the left and right direction, with its front and lower sides open, and its rear side located behind the receiving hopper 43 and having an inspection port on it; the upper crusher 42 is located inside the protective cover 46.

[0016] Preferably, in the embodiments of the present invention, the upper crusher 42, the lower crusher 44, the conical chamber 43, the boss 45 and the conveying roller at the end of the input roller table 41 are all made of hard alloy without iron or hard alloy with low iron content.

[0017] In this embodiment of the invention, the feeding conveying device 1, the layered conveying device 2, and the discharging conveying device 3 can all simultaneously convey three glass sheets 5. The layered conveying device 2 includes a central conveying structure 6 and two end conveying structures 7 on its left and right sides. The central conveying structure 6 and the end conveying structures 7 are arranged side by side and can both rotate downwards. Their front ends are rotatably mounted on the frame, and each conveys one glass sheet 5. The lower rear side of each structure is provided with a flipping support structure, and their rear ends are connected to the discharging conveying device 3. The central conveying structure 6 includes two inner flipping arms 21 arranged side by side and multiple support components arranged side by side on the inner flipping arms 21. The support components include components located on the left and right sides of the inner flipping arms 21 and driven synchronously. Two second conveyor wheels 22; the end conveying structure 7 includes two outward tilting arms 31 arranged side by side and multiple conveyor shafts 32 arranged side by side between them. The conveyor shafts 32 are arranged in the left-right direction and have multiple first conveyor wheels 33 arranged side by side on them. The outer tilting arm 31 is provided with a first synchronous drive assembly that synchronously drives multiple conveyor shafts 32 and has a drive motor 34 at its front. The outer tilting arm 31 and the inner tilting arm 21 are both arranged horizontally in the front-back direction, and their front ends are rotatably mounted on the frame. The first conveyor wheels 33 and the second conveyor wheels 22 are both arranged in the left-right direction and their tops are flush. The inner tilting arm 21 is provided with a second synchronous drive assembly that synchronously drives multiple support components. The inner end of the front conveyor shaft 32 is aligned with the corresponding side of the... The second synchronous drive assembly or the front support assembly of the inner tilting arm 21 are connected by a left-right universal coupling 23. The tilting support structure includes two tilting support units arranged side by side. Each tilting support unit includes a bushing 51 rotatably mounted on the frame, a long rotating shaft 52 coaxially mounted inside and passing through the bushing 51, two outer support arms 53 arranged side by side on the upper side of the bushing 51, an inner support arm 54 at the inner end of the long rotating shaft 52, an inner drive mechanism 55 for driving the bushing 51 to rotate, and an outer drive mechanism 56 at the outer end of the long rotating shaft 52 for driving the long rotating shaft 52 to rotate. The bushings 51 of the two tilting support units are located directly below the two end conveying structures 7, and the long rotating shafts 52 of the two tilting support units are... The inner ends are located directly below the two inner flip arms 21; both the outer support arm 53 and the inner support arm 54 are vertically arranged and their upper ends are provided with support wheels 57 in the left and right directions. The two outer support arms 53 are used to support the rear of the two outer flip arms 31 of the end conveying structure 7, and the two inner support arms 54 are used to support the rear of the two inner flip arms 21, respectively. The support wheels 57 abut against the lower side of the corresponding outer flip arm 31 or inner flip arm 21 and can slide back and forth; the two inner drive mechanisms 55 are driven asynchronously, the two outer drive mechanisms 56 are driven synchronously, and the two drive motors 34 are driven synchronously; the inner drive mechanism 55 can drive the corresponding outer support arm 53 to rotate backward, and the outer drive mechanism 56 can drive the corresponding inner support arm 54 to rotate backward.When the outer support arm 53 rotates backward, the end conveying structure 7 is arranged diagonally downward from front to back and connects with the input roller conveyor 41; when the inner support arm 54 rotates backward, the middle conveying structure 6 is arranged diagonally downward from front to back and connects with the input roller conveyor 41.

[0018] Further, in this embodiment of the invention, for the end conveying structure 7: the inner end of the conveying shaft 32 extends inward relative to the inner outer flipping arm 31, and is rotatably disposed on the upper side of the inner outer flipping arm 31; a first conveying wheel 33 is coaxially disposed at its inner end; the first conveying wheel 33 at the inner end is located on the adjacent inner side of the inner outer flipping arm 31; the glass sheet 5 in the middle is located between the inner ends of the conveying shafts 32 of the two end conveying structures 7; the outer diameters of the first conveying wheel 33 and the second conveying wheel 22 are the same; each conveying shaft 3 2. A support component is provided accordingly; a short rotating shaft is provided between the two second conveying wheels 22 of each support component. The short rotating shaft is provided on the inward rotating arm 21 in the left-right direction and is connected to the second synchronous drive component. The second conveying wheel 22 is coaxially provided at the end of the short rotating shaft. The front support component is connected to the front conveying shaft 32 of the corresponding end conveying structure 7 through a universal coupling 23. The inner end of the universal coupling 23 is coaxially fixed with the outer end of the short rotating shaft, and its outer end is coaxially fixed with the inner end of the conveying shaft 32.

[0019] The beneficial effects of the embodiments of the present invention are as follows: This invention provides a waste glass recycling and reuse system. Photovoltaic glass is crushed using three methods: 1) upper crusher with downward pressure; 2) boss impact crushing (optional); and 3) conventional crushing with a lower crusher. The lower crusher's rotation speed can be set relatively slowly (e.g., less than 250 r / min), and the spacing between the impact components can be set relatively wide (e.g., greater than 3 cm). The upper crusher employs a special design to minimize contact with the glass; the bosses have a sharp structure, further reducing contact with the glass; and grooves are provided on the receiving hopper (further reducing contact with the glass by adding bosses). Improvements to the materials (conventional improvements) ensure that minimal or no iron is introduced during the crushing process (meeting usage requirements); the crushed glass can be directly reused. Furthermore, the layered conveying device is improved, simplifying the structure to require only two drive motors and two tilting support units. Specifically, the three glass panels employ two types of flipping conveying mechanisms: two end conveying structures and one middle conveying structure. The middle conveying structure features a special design where the second conveying wheels on the two arms are driven by two drive motors. The inner and outer drive mechanisms are located on the outside of the layered conveying device, with sufficient space for easy maintenance. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the waste glass recycling and reuse system provided in an embodiment of the present invention; Figure 2 yes Figure 1 A schematic diagram of the structure of the layered conveyor as it rotates downwards; Figure 3 This is a schematic diagram of the upper pulverizer; Figure 4 This is a schematic diagram of the structure of the lower pulverizer; Figure 5 This is a schematic diagram of the structure of a layered conveying device; Figure 6 This is a rear view of the tiered conveyor system.

[0021] In the diagram: 1 Feeding conveyor, 2 Layered conveyor, 3 Discharge conveyor, 4 Crushing device, 5 Glass sheet, 6 Middle conveying structure, 7 End conveying structure; 21 Inward tilting arm, 22 Second conveyor wheel, 23 Universal coupling; 31 Outward tilting arm, 32 Conveying shaft, 33 First conveying wheel, 34 Drive motor; 41 Input roller conveyor, 42 Upper crusher, 43 Receiving hopper, 44 Lower crusher, 45 Boss, 46 Protective cover, 47 Crushed material conveying structure; 51. Bushing, 52. Long shaft, 53. Outer support arm, 54. Inner support arm, 55. Inner drive mechanism, 56. Outer drive mechanism, 57. Support wheel. Detailed Implementation

[0022] The invention will be further described below through specific embodiments. However, it should be noted that these embodiments are merely illustrative and do not limit the scope of the invention.

[0023] Example 1 See Figure 1-4 Example 1 provides a waste glass recycling and reuse system. The system includes a frame, a feeding conveyor 1, a layered conveyor 2, an output conveyor 3, and a crushing device 4. The feeding conveyor 1, layered conveyor 2, and output conveyor 3 are sequentially arranged on the frame from front to back and connected sequentially. All three devices are arranged in a front-to-back direction. Both the feeding conveyor 1 and the output conveyor 3 include multiple conveying shafts arranged side-by-side (in a left-to-right direction), with multiple conveying wheels (plastic wheels) arranged side-by-side on each shaft. The layered conveyor 2 can rotate downwards to connect with the input roller conveyor 41 of the crushing device 4, thus conveying abnormal glass sheets 5 to the crushing device 4.

[0024] The crushing device 4 is located directly below the discharge conveying device 3. The crushing device 4 includes an input roller conveyor 41, an upper crusher 42, a receiving hopper 43, a crushed material conveying structure 47, a lower crusher 44, and a protective cover 46. The input roller conveyor 41 is arranged diagonally downwards from front to back, directly below the discharge conveying device 3 and below and behind the layered conveying device 2. It includes multiple conveying rollers arranged side-by-side. The conveying rollers are arranged in a left-right direction and are metal rollers. The protective cover 46 is located on top (specifically at the rear) of the receiving hopper 43, arranged in a left-right direction, with open front and bottom sides. Its rear side is located behind the receiving hopper 43 and has an inspection port; it is specifically a rectangular protective cover.

[0025] The upper crusher 42 is located at the rear end of the input roller conveyor 41, inside the protective cover 46, and is arranged in a left-right direction. It is located behind the receiving hopper 43 and above and behind the lower crusher 44. Its lower part rotates forward (throwing the crushed glass forward). It includes a roller arranged in a left-right direction and multiple first impact components arranged side by side on its upper and lower sides. The first impact component includes a ring (with an outer diameter 15-30mm larger than the diameter of the roller) coaxially arranged on the circumference of the roller and two pointed protrusions at its opposite ends. The pointed protrusions of all the first impact components are distributed in a spiral line (forming two spiral lines). The spiral lines are arranged coaxially with the roller, and their pitch is greater than 1m. The lower end of the pointed protrusion at the bottom (arranged vertically at this time) is located below and behind the input roller conveyor 41 and presses against the upper side of the glass sheet 5 output from the input roller conveyor 41 to crush the glass sheet 5 downward (usually only 2-6 pointed protrusions contact the glass sheet 5).

[0026] The receiving bin 43 is located below the upper crusher 42. It is a conical bin, wider at the top and narrower at the bottom. At least one protrusion 45 is located on its front wall, below ground level. Multiple grooves are arranged vertically on all four bin walls. The protrusion 45 serves two purposes: first, to prevent forward-falling glass from contacting the front bin wall; and second, to allow the glass to shatter (reducing the contact time between the glass and the lower crusher 44, as the pointed end breaks the glass, resulting in a smaller contact area). The grooves also reduce the contact area between the glass and the bin walls. The rear side of the protrusion 45 is pointed, and its rear projection is located in front of or adjacent to the lower crusher 44 to minimize contact. The grooves are arranged horizontally, with a depth of 3-10 mm and a width of 3-10 mm; the distance between adjacent grooves is 20-60 mm.

[0027] The lower crusher 44 is located at the discharge port at the bottom of the receiving hopper 43. It is arranged in a left-right direction and its shape matches the discharge port. It is adjacent to the four sides of the discharge port of the receiving hopper 43. It includes a crushing shaft arranged in a left-right direction and multiple second impact components arranged side by side on its upper left and right sides. The second impact components include at least three impact arms evenly distributed around the crushing shaft, similar to the conventional structure.

[0028] Among them, the crushed material conveying structure 47 is located directly below the receiving bin 43, which delivers the crushed glass to the batching device of the glass furnace, specifically a belt conveyor structure.

[0029] The receiving bin 43 and the boss 45 are both made of cemented carbide. Preferably, the upper crusher 42 and the lower crusher 44 are also made of cemented carbide. Furthermore, the upper crusher 42, the lower crusher 44, the conical bin 43, the boss 45 and the conveying roller at the end of the input roller conveyor 41 are all made of cemented carbide without iron (since the upper crusher 42, the lower crusher 44, the conical bin 43 and the boss 45 will use a large amount of metal, especially the conical bin 43, if cemented carbide without iron is used, the cost will be very high. Considering the overall cost, cemented carbide with low iron content can usually be used) or cemented carbide with low iron content (such as less than 5 wt%, preferably less than 0.5 wt%).

[0030] Among them, the rotational speed of the upper crusher 42 is greater than that of the lower crusher 44, and the distance between two adjacent first impact components is greater than the distance between two adjacent second impact components.

[0031] Specifically, the roller is located above and behind the rear end of the input roller conveyor 41 to avoid contact between the glass and the roller. The pointed protrusion is an isosceles triangle, which is arranged radially along the roller, with its two sides smoothly transitioning to the annulus, and its front end may be rounded.

[0032] Example 2 See Figure 1-2 Example 2 provides a waste glass recycling and reuse system, whose structure is basically the same as that of Example 1. The difference is that the receiving bin 43 in this embodiment is a four-sided pyramid bin arranged in the left-right direction, its discharge port is a rectangular opening arranged in the left-right direction, its front and rear bin walls are inclined in the front-back direction, and its left and right bin walls are inclined in the left-right direction. The angle between the bin wall of the receiving bin 43 and the vertical direction is 10-30°.

[0033] Example 3 See Figure 1-2 Example 3 provides a waste glass recycling and reuse system, the structure of which is basically the same as that of Example 1. The difference is that there are two bosses 45 in this embodiment. The two bosses 45 are arranged side by side, located on the left and right sides of the front wall of the receiving bin 43, respectively. They are located on the upper or middle part (preferably the upper part) of the front wall, and are located above the left and right ends of the discharge port. The bosses 45 are angular bosses with their tops horizontally arranged. Their front side is fixed to the receiving bin 43, and their rear side is arranged obliquely downward from back to front. The projection of the rear end of its top (located on the path of more forward-thrown glass) is located in front of or adjacent to the lower crusher 44.

[0034] Example 4 See Figure 1-2 Example 4 provides a waste glass recycling and reuse system, whose structure is basically the same as that of Example 1. The difference lies in that the second impact component in this embodiment includes an equilateral triangular frame and three impact arms evenly distributed around the crushing shaft. The equilateral triangular frame is coaxially arranged on the circumference of the crushing shaft (located at the center of the equilateral triangular frame). The three impact arms are respectively located at the three vertices of the equilateral triangular frame, with an included angle of 120° between adjacent impact arms. The impact arms are arranged radially along the crushing shaft, with their inner ends fixed to the corresponding vertices of the equilateral triangular frame, and their outer ends having enlarged portions. The arrangement of the second impact component ensures that the glass is crushed to a predetermined size.

[0035] Example 5 Example 5 provides a waste glass recycling and reuse system, the structure of which is basically the same as that of Example 1. The difference is that the rotation speed of the upper crusher 42 in this embodiment is 300-600 r / min, and the rotation speed of the lower crusher 44 is 150-250 r / min. The distance between two adjacent first impact components is 5-15 cm, the distance between the tip of the protruding part and the drum is 3-5 cm, and the distance between two adjacent second impact components is 3-7 cm.

[0036] Example 6 See Figure 5-6 Example 6 provides a waste glass recycling and reuse system, whose structure is basically the same as that of Example 1. The difference is that the feeding conveyor 1, the layered conveyor 2, and the discharging conveyor 3 in this embodiment can all simultaneously convey three glass sheets 5. The layered conveyor 2 includes a central conveying structure 6 and two end conveying structures 7 on its left and right sides. The central conveying structure 6 and the end conveying structures 7 are arranged side by side and can both rotate downwards. Their front ends are rotatably mounted on the frame (via left and right rotating shafts), and each conveys one glass sheet 5. The lower rear side of each structure is provided with a flipping support structure, and their rear ends are connected to the discharging conveyor 3. Specifically, the two end flipping conveying mechanisms 7 are used to convey two glass sheets 5 at the ends, and the central flipping conveying mechanism 6 is used to convey one glass sheet 5 in the middle.

[0037] The central conveying structure 6 includes two inner tilting arms 21 arranged side-by-side and multiple support components arranged front-to-back on the inner tilting arms 21. A second synchronous drive component is provided on the inner tilting arms 21 to synchronously drive the multiple support components. The two inner tilting arms 21 are located below the left and right sides of a central glass plate 5, respectively. The support components include two second conveying wheels 22 located on the left and right sides of the inner tilting arms 21 and driven synchronously. Specifically, a short rotating shaft is provided between the two second conveying wheels 22 of each support component. The short rotating shaft is located on the inner tilting arm 21 in a left-right direction and is connected to the second synchronous drive component. The second conveying wheels 22 are coaxially located at the ends (left or right) of the short rotating shaft.

[0038] The end conveying structure 7 includes two outwardly rotating arms 31 arranged side-by-side and multiple conveying shafts 32 arranged front-to-back between them. The outer outwardly rotating arms 31 are located outside the glass sheet 5 (the end glass sheet 5) on the corresponding side. The conveying shafts 32 are arranged in a left-right direction and have multiple first conveying wheels 33 arranged side-by-side on them. The outer outwardly rotating arms 31 are equipped with a first synchronous drive assembly that synchronously drives the multiple conveying shafts 32, and a drive motor 34 (specifically a servo motor) is located at the front of the assembly. The drive motor 34 is connected to the first synchronous drive assembly or the first conveying shaft 32 at the front end.

[0039] Both the first and second synchronous drive components are conventional structures, specifically chain synchronous drive structures, which are omitted in detail in this embodiment. Both the first and second synchronous drive components are equipped with protective covers to prevent oil stains, metal shavings, etc., from splashing.

[0040] Both the outer tilting arm 31 and the inner tilting arm 21 are horizontally arranged in the front-to-back direction, with their front ends rotatably mounted on the frame (via a left-to-right rotating shaft). The first conveying wheel 33 and the second conveying wheel 22 are both arranged in the left-to-right direction, with their tops flush and having the same outer diameter, and their tops higher than the outer tilting arm 31 and the inner tilting arm 21. The inner end of the front conveying shaft 32 is connected to the second synchronous drive assembly of the corresponding inner tilting arm 21 or the front support assembly via a left-to-right universal coupling 23 to achieve synchronous drive between the support assembly on the inner tilting arm 21 and the corresponding end conveying structure 7; specifically, the front support assembly is connected to the first conveying shaft 32 at the front end of the corresponding end tilting conveying mechanism 7 via the universal coupling 23. The inner end of the universal coupling 23 is coaxially fixed to the outer end of the short rotating shaft, and its outer end is coaxially fixed to the inner end of the first conveying shaft 32.

[0041] The tilting support structure includes two tilting support units arranged side by side on the left and right sides of the frame, respectively, in a symmetrical configuration. Each tilting support unit includes a bushing 51, a long rotating shaft 52, an inner support arm 54, an inner drive mechanism 55, an outer drive mechanism 56, and two outer support arms 53. The bushing 51 is positioned horizontally and rotates (specifically via bearing seats) on the frame. The bushings 51 of the two tilting support units are located directly below the two end conveying structures 7 (specifically, the rear). The long rotating shaft 52 is coaxially mounted inside the bushing 51, passing through it and rotating within the bushing 51. Its left and right ends (rotatably mounted on corresponding bearing seats) protrude from the corresponding ends of the bushing 51. The inner ends of the long rotating shafts 52 of the two tilting support units are located directly below the two inner tilting arms 21. Two outer support arms 53 are arranged side by side and fixed to the upper side of the bushing 51. They are located on the left and right sides of the bushing 51, respectively, and are used to support the rear of the two outer flipping arms 31 of the end conveying structure 7. An inner support arm 54 is located at the inner end of the long rotating shaft 52; the two inner support arms 54 of the two flipping support units are used to support the rear of the two inner flipping arms 21 respectively. Both the outer support arms 53 and the inner support arms 54 are arranged vertically and each has a support wheel 57 at its upper end. The support wheel 57 is arranged in the left-right direction, abutting against the lower side of the corresponding outer flipping arm 31 or inner flipping arm 21 and can slide back and forth. The inner drive mechanism 55 is used to drive the bushing 51 to rotate, and the outer drive mechanism 56 is located at the outer end of the long rotating shaft 52 and is used to drive the long rotating shaft 52 to rotate. Both the inner drive mechanism 55 and the outer drive mechanism 56 are cylinder driven structures. Specifically, the inner drive mechanism 55 can drive the outer support arm 53 to rotate backward, and the outer drive mechanism 56 can drive the inner support arm 54 to rotate backward. When the outer support arm 53 rotates backward, the end conveying structure 7 is arranged obliquely downward from front to back and connects with the input roller conveyor 41. When the inner support arm 54 rotates backward, the middle conveying structure 6 is arranged obliquely downward from front to back and connects with the input roller conveyor 41.

[0042] Among them, the two inner drive mechanisms 55 drive asynchronously (controlling the rotation of the two end conveying structures 7 respectively), the two outer drive mechanisms 56 drive synchronously (controlling the rotation of the middle conveying structure 6 at the same time), and the two drive motors 34 drive synchronously to ensure that the speed of the support components on the two inner flipping arms 21 is the same.

[0043] Specifically, for the left-side end conveying structure 7: a universal coupling 23 is provided between the right end of the first conveying shaft 32 at the front end and the support assembly at the front end of the left-side inner tilting arm 21. For the right-side end conveying structure 7: a universal coupling 23 is provided between the left end of the first conveying shaft 32 at the front end and the support assembly at the front end of the right-side inner tilting arm 21. For the left-side tilting support unit: this tilting support unit is used to support the left-side end conveying structure 7, and an inner support arm 54 is provided at the right end of the long rotating shaft 52, which is used to support the left-side inner tilting arm 21. For the right-side tilting support unit: this tilting support unit is used to support the right-side end conveying structure 7, and an inner support arm 54 is provided at the left end of the long rotating shaft 52, which is used to support the right-side inner tilting arm 21.

[0044] Preferably, each first conveying shaft 32 is provided with a corresponding support component; specifically, the end conveying structure 7 is provided with 8 first conveying shafts 32, and the middle conveying structure 6 is provided with 8 support components, with the 8 first conveying shafts 32 and the 8 support components being provided in a one-to-one correspondence.

[0045] In this embodiment of the invention, the two inward tilting arms 21 are symmetrically arranged about the center line of the middle glass sheet 5; the two end conveying structures 7 are symmetrically arranged about the center line of the middle glass sheet 5. The drive motor 34 is located on the outer front end of the outer tilting arm 31.

[0046] Example 7 See Figure 5-6 Example 7 provides a waste glass recycling and reuse system, whose structure is basically the same as that of Example 6. The difference is that, for the end-turning conveyor mechanism 7: the inner end of the first conveying shaft 32 extends inward relative to the inner first turning arm 31, and is rotatably mounted (through a bearing seat) on the upper side of the inner first turning arm 31. A first conveying wheel 33 is coaxially provided at its inner end. The inner first conveying wheel 33 is located adjacent to the inner side of the inner first turning arm 31, and there is a gap between it and the corresponding second turning arm 21. The glass sheet 5 in the middle is located between the inner ends of the first conveying shafts 32 of the two end-turning conveyors 3.

[0047] Verification Experiment The iron content of seven batches of raw materials, broken glass, and semi-finished photovoltaic glass (without drilling, edge grinding, or tempering processes) was tested. For broken glass, approximately 100g of broken glass was taken every half hour, for a total of 2000g (approximately every 30 minutes). After mixing and crushing (without introducing iron), ten samples (approximately 2g each) were randomly selected and tested once (using spectrophotometry with o-phenanthroline colorimetry). The average of the ten values ​​was taken. For photovoltaic glass, the testing method was the same as for the broken glass (see the test report for the semi-finished product). The results are shown in Table 1. Table 1

[0048] As can be seen from Table 1, the iron content of the recycled crushed glass (although it increases relative to the raw materials, the amount used is small, which basically ensures that the iron content of the raw materials for glass production (the added mineral raw materials and the recycled crushed glass) is less than 100 ppm) is slightly increased or not increased compared to the finished glass, that is, no iron element is introduced during the crushing process.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A waste glass recycling and reuse system, comprising a frame, a feeding conveyor (1), a layered conveyor (2), a discharge conveyor (3), and a crushing device (4), wherein the feeding conveyor (1), the layered conveyor (2), and the discharge conveyor (3) are arranged sequentially on the frame from front to back, and the crushing device (4) is located directly below the discharge conveyor (3). The layered conveyor (2) can rotate downward to connect with the input roller conveyor (41) of the crushing device (4). The crushing device (4) comprises an input roller conveyor (41) arranged obliquely downward from front to back, an upper crusher (42) at the rear end of the input roller conveyor (41), a receiving bin (43) below the upper crusher (42), and a crushed material conveying structure (47) directly below the receiving bin (43). The receiving bin (43) is a conical bin that is larger at the top and smaller at the bottom. The crushed material conveying structure (47) is a batching device that delivers crushed glass to a glass furnace; The receiving hopper (43) has a lower crusher (44) at its discharge port at the bottom; the upper crusher (42) is located at the rear of the receiving hopper (43), above and behind the lower crusher (44), and its lower part rotates forward; the front wall of the receiving hopper (43) has at least one boss (45), the rear side of the boss (45) is pointed and its rear projection is located in front of or adjacent to the lower crusher (44); the receiving hopper (43) and the boss (45) are both made of hard alloy, and multiple grooves are arranged vertically and horizontally on the four walls of the receiving hopper (43); the upper crusher (42) and the lower crusher (44) are both arranged horizontally. The upper crusher (42) includes a drum arranged in the left-right direction and a plurality of first impact components arranged side by side on its upper left and right sides. The first impact component includes a ring coaxially arranged on the circumference of the drum and two pointed protrusions at opposite ends. The pointed protrusions of all the first impact components are distributed in a spiral line. The spiral line is coaxial with the drum. The lower end of the pointed protrusion at the bottom is located behind and below the input roller (41) and presses against the upper side of the glass sheet (5) output by the input roller (41). The lower crusher (44) includes a crushing shaft arranged in the left-right direction and a plurality of second impact components arranged side by side on its upper left and right sides. The second impact component includes at least three impact arms evenly distributed around the crushing shaft.

2. The waste glass recycling and reuse system according to claim 1, characterized in that, The receiving bin (43) is a four-sided pyramidal bin arranged in the left and right direction, and its discharge port is a rectangular opening arranged in the left and right direction. Its front and rear bin walls are inclined in the front and back direction. There are two bosses (45). The two bosses (45) are arranged side by side, respectively located on the left and right sides of the front bin wall of the receiving bin (43). They are located on the upper or middle part of the front bin wall and are located above the left and right ends of the discharge port. The boss (45) is an angular boss with its top horizontally arranged. Its front side is fixed on the receiving bin (43), and its rear side is inclined downward from back to front. The projection of its top rear end is located on the front side or adjacent front of the lower crusher (44).

3. The waste glass recycling and reuse system according to claim 2, characterized in that, The lower crusher (44) and the discharge port of the receiving hopper (43) are arranged adjacent to each other on four sides. The second impact assembly includes an equilateral triangle frame and three impact arms evenly distributed around the crushing shaft. The equilateral triangle frame is coaxially arranged on the circumference of the crushing shaft. The three impact arms are respectively located at the three vertices of the equilateral triangle frame, and the included angle between two adjacent impact arms is 120°. The impact arms are arranged radially along the crushing shaft, with their inner ends fixed to the corresponding vertices of the equilateral triangle frame and their outer ends having enlarged portions.

4. The waste glass recycling and reuse system according to claim 1, characterized in that, The roller is located above and behind the rear end of the input roller conveyor (41); the tip protrusion is an isosceles triangle arranged radially along the roller, with its two sides smoothly transitioning to the annulus.

5. The waste glass recycling and reuse system according to claim 1, characterized in that, The rotational speed of the upper pulverizer (42) is greater than that of the lower pulverizer (44), and the distance between two adjacent first impact components is greater than the distance between two adjacent second impact components.

6. The waste glass recycling and reuse system according to claim 5, characterized in that, The upper crusher (42) rotates at a speed of 300-600 r / min, and the lower crusher (44) rotates at a speed of 150-250 r / min; the distance between two adjacent first impact components is 5-15 cm, the distance between the tip of the protruding tip and the roller is 3-5 cm, and the distance between two adjacent second impact components is 3-7 cm; the angle between the wall of the receiving bin (43) and the vertical direction is 10-30°.

7. The waste glass recycling and reuse system according to claim 1, characterized in that, The top of the receiving hopper (43) is provided with a protective cover (46); the protective cover (46) is arranged in the left and right direction, with its front and lower sides open, and its rear side located behind the receiving hopper (43) and having an inspection port on it; the upper crusher (42) is located inside the protective cover (46).

8. The waste glass recycling and reuse system according to claim 1, characterized in that, The materials of the upper crusher (42), lower crusher (44), conical bin (43), boss (45) and the conveying roller at the end of the input roller conveyor (41) are all hard alloys without iron or hard alloys with low iron content.

9. The waste glass recycling and reuse system according to claim 1, characterized in that, The feeding conveying device (1), the layered conveying device (2) and the discharging conveying device (3) can all convey three glass sheets (5) at the same time. The layered conveying device (2) includes a central conveying structure (6) in the middle and two end conveying structures (7) on the left and right sides. The central conveying structure (6) and the end conveying structures (7) are arranged side by side and can rotate downward. Their front ends are rotatably mounted on the frame. Each conveys one glass sheet (5). The lower side of their rear ends is provided with a flipping support structure. Their rear ends are connected to the discharging conveying device (3). The central conveying structure (6) includes two inner tilting arms (21) arranged side by side on the left and right sides and multiple support components arranged side by side on the inner tilting arms (21). The support components include two second conveying wheels (22) located on the left and right sides of the inner tilting arms (21) and driven synchronously. The end conveying structure (7) includes two outward flipping arms (31) arranged side by side on the left and right, and multiple conveying shafts (32) arranged side by side between them. The conveying shafts (32) are arranged in the left and right direction and multiple first conveying wheels (33) are arranged side by side on them. The outer outward flipping arm (31) is provided with a first synchronous drive assembly that synchronously drives multiple conveying shafts (32) and a drive motor (34) is provided at its front. The outer flipping arm (31) and the inner flipping arm (21) are both arranged horizontally in the front and back direction, and their front ends are rotatably mounted on the frame. The first conveying wheel (33) and the second conveying wheel (22) are both arranged in the left and right direction and their tops are flush. The inner tilting arm (21) is provided with a second synchronous drive assembly that synchronously drives multiple support assemblies. The inner end of the front conveying shaft (32) is connected to the second synchronous drive assembly of the corresponding side inner tilting arm (21) or the front support assembly through a left-right universal coupling (23). The flip support structure includes two flip support units arranged side by side. Each flip support unit includes a bushing (51) rotatably mounted on the frame, a long rotating shaft (52) coaxially mounted inside the bushing (51) and passing through the bushing (51), two outer support arms (53) arranged side by side on the upper side of the bushing (51), an inner support arm (54) at the inner end of the long rotating shaft (52), an inner drive mechanism (55) for driving the bushing (51) to rotate, and an outer drive mechanism (56) at the outer end of the long rotating shaft (52) for driving the long rotating shaft (52) to rotate. The bushings (51) of the two flip support units are located at two ends respectively. Directly below the conveying structure (7), the inner ends of the long rotating shafts (52) of the two flipping support units are located directly below the two inner flipping arms (21); the outer support arm (53) and the inner support arm (54) are both vertically arranged and their upper ends are provided with support wheels (57) in the left and right directions. The two outer support arms (53) are used to support the rear of the two outer flipping arms (31) of the end conveying structure (7), and the two inner support arms (54) are used to support the rear of the two inner flipping arms (21). The support wheels (57) abut against the lower side of the corresponding outer flipping arm (31) or inner flipping arm (21) and can slide back and forth. Two internal drive mechanisms (55) drive asynchronously, two external drive mechanisms (56) drive synchronously, and two drive motors (34) drive synchronously; the internal drive mechanism (55) can drive the corresponding external support arm (53) to rotate backward, and the external drive mechanism (56) can drive the corresponding internal support arm (54) to rotate backward; when the external support arm (53) rotates backward, the end conveying structure (7) is set obliquely downward from front to back and is connected to the input roller conveyor (41); when the internal support arm (54) rotates backward, the middle conveying structure (6) is set obliquely downward from front to back and is connected to the input roller conveyor (41).

10. The waste glass recycling and reuse system according to claim 9, characterized in that, For the end conveying structure (7): the inner end of the conveying shaft (32) extends inward relative to the inner outer flip arm (31), and is rotatably located on the upper side of the inner outer flip arm (31). A first conveying wheel (33) is coaxially disposed at its inner end; the first conveying wheel (33) at the inner end is located on the adjacent inner side of the inner outer flip arm (31); the glass plate (5) in the middle is located between the inner ends of the conveying shafts (32) of the two end conveying structures (7); the outer diameters of the first conveying wheel (33) and the second conveying wheel (22) are the same; each conveying shaft (32) is paired with... A support assembly should be provided; a short shaft is provided between the two second conveying wheels (22) of each support assembly. The short shaft is located on the inward turning arm (21) in the left-right direction and is connected to the second synchronous drive assembly. The second conveying wheel (22) is coaxially located at the end of the short shaft. The support assembly at the front end is connected to the conveying shaft (32) at the front end of the end conveying structure (7) on the corresponding side through a universal coupling (23). The inner end of the universal coupling (23) is coaxially fixed with the outer end of the short shaft, and its outer end is coaxially fixed with the inner end of the conveying shaft (32).

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