Construction engineering construction waste grading and crushing recovery device

Abstract

This application relates to the field of construction waste crushing and recycling, and discloses a graded crushing and recycling device for construction waste, including a crusher, a machine bed below the crusher, a conveyor belt on the machine bed, and an iron material sorting component on the machine bed. The iron material sorting component includes a magnetic conveyor belt positioned above the conveyor belt with a set magnetic attraction distance. An iron material stripping component is provided outside the magnetic conveyor belt, and the iron material stripping component includes an isolation sleeve fitted onto the outer wall of the magnetic conveyor belt. By setting the isolation sleeve, drive roller, and driven roller, the isolation sleeve is fitted onto the outside of the magnetic conveyor belt. Utilizing the principle that the magnetic force decreases as the distance gradually increases, when the iron material moves with the isolation sleeve and gradually approaches the end of the magnetic conveyor belt, the isolation sleeve widens the distance between the iron material and the magnetic conveyor belt, allowing the iron material to fall smoothly and naturally. This not only results in high material discharge efficiency but also reduces the risk of scraping the conveyor belt or other equipment.

Description

Technical Field

[0001] This invention relates to the field of construction waste crushing and recycling, specifically to a graded crushing and recycling device for construction waste in construction projects. Background Technology

[0002] Construction waste sometimes contains iron scraps, which are normal remnants from construction and demolition. For example, when demolishing walls, floors, or reinforced concrete, steel bars, wires, and nails are crushed and ground into fine iron filings. If there are a large quantity of these iron filings, they will not only affect the purity of aggregates and the strength of subsequent brick and road materials, but may also scratch and wear down subsequent equipment. At the same time, the iron scraps themselves also have certain economic value and are worth sorting and recycling separately.

[0003] Current iron sorting mechanisms generally use magnets to attract and then demagnetize the iron filings. Existing technology uses a magnetic conveyor belt close to the material to attract the iron filings. A search revealed that the China National Intellectual Property Administration has disclosed a comprehensive construction waste processing device and method. This device uses a scraper on a rubber magnetic plate, positioned near the end of a magnetic conveyor belt. The scraper, by contacting the magnetic conveyor belt, can scrape off the attracted iron filings. While this method can achieve continuous iron separation without stopping the machine, the friction between the scraper and the rubber magnetic plate is difficult to control. Too much friction damages the rubber magnetic plate, while too little friction leaves the iron filings uncleaned. The patent description also adds that the scraper is controlled by a torsion spring, making it difficult to remove small iron filings. The scraper is pushed aside, causing a small amount of iron filings to return to the lower adsorption area with the rubber magnetic plate. Over time, this further affects the adsorption effect of the rubber magnetic plate. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a graded crushing and recycling device for construction waste, which solves the problems of poor iron stripping efficiency and damage to magnetic conveyor belts caused by scraping with scrapers in construction waste recycling.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a construction waste grading, crushing, and recycling device, comprising a crusher, a machine bed below the crusher, a conveyor belt on the machine bed, and an iron material sorting component on the machine bed; the iron material sorting component includes a magnetic conveyor belt positioned above the conveyor belt at a predetermined magnetic attraction distance, which is responsible for adsorbing iron materials mixed in with the debris; an iron material stripping component is provided outside the magnetic conveyor belt, the iron material stripping component including an isolation sleeve fitted onto the outer wall of the magnetic conveyor belt; a driving component is provided inside the isolation sleeve to help the isolation sleeve and the magnetic conveyor belt move synchronously, during the operation of the isolation sleeve, the distance between the iron material and the magnetic conveyor belt gradually increases, exceeding the magnetic attraction distance and falling off; a dust collection component is provided on the conveyor belt to remove dust from the upper chamber of the crusher and above the conveyor belt.

[0006] Preferably, the driving component includes a geared motor, the output end of which is fixedly connected to a driving roller, and the interior of the isolation sleeve is also provided with a driven roller. The iron stripping component also includes a support frame, and the outer end of the magnetic conveyor belt is fixedly fitted with a transmission belt. The outer walls of the driving roller and the driven roller are both frictionally connected to the inner wall of the isolation sleeve, and the outer wall of the transmission belt is also frictionally connected to the inner wall of the isolation sleeve.

[0007] Preferably, the outer walls of both the drive roller and the driven roller are provided with synchronous tooth grooves, the inner wall of the isolation sleeve is provided with first synchronous belt teeth, the synchronous tooth grooves mesh with the first synchronous belt teeth for transmission, and the outer end of the transmission belt is provided with second synchronous belt teeth, the first synchronous belt teeth mesh with the second synchronous belt teeth for transmission.

[0008] Preferably, the isolation sleeve is provided with a distance adjustment component, which includes a hydraulic rod disposed at the outer end of the support frame. A tension roller is disposed closely inside the isolation sleeve, and an L-shaped connecting rod assembly is disposed on the tension roller. The hydraulic rod drives the bottom surface of the isolation sleeve to form a ramp with a set inclination angle through the L-shaped connecting rod assembly, thereby completing the synchronous transmission between the drive roller and the isolation sleeve.

[0009] Preferably, the L-shaped linkage assembly includes an L-shaped linkage frame, a pair of sliding rods are slidably connected to the inner wall of the L-shaped linkage frame, a pull rod is fixedly connected to the side end of the sliding rod, and a movable sleeve is fixedly connected to the end of the pull rod. One of the movable sleeves is fitted onto the tension roller, and the other movable sleeve is fitted onto the drive roller. The outer ends of the pair of sliding rods are rotatably connected to a linkage rod by a pin.

[0010] Preferably, the conveyor belt is provided with a lifting component, which includes multiple crossbars. Multiple pairs of support rods are fixedly connected to the conveyor belt. The crossbars are made of plastic and are cylindrical. The crossbars are positioned between a pair of support rods and push the dragged iron material back and forth to facilitate its adsorption.

[0011] Preferably, a guide groove is provided on one side of the support rod, a drive block is slidably connected inside the guide groove, the drive block is fixedly connected to the end of the corresponding crossbar, and a cylinder is provided at the bottom of the guide groove and fixedly connected to the drive block.

[0012] Preferably, the transmission belt is provided with a limiting frame, which includes a vertical plate and an inclined plate. The vertical plate and the baffle are integrally connected and are responsible for concentrating and distributing the debris.

[0013] Preferably, a flat plate is fixedly connected between the pair of inclined plates, which is used to uniformly distribute and convey the scrap material at a set thickness.

[0014] Preferably, a waste collection box is provided below the conveyor belt, and an iron collection box is provided below the isolation sleeve.

[0015] This invention provides a graded crushing and recycling device for construction waste. It has the following beneficial effects: 1. This invention sets up an isolation sleeve, a drive roller, and a driven roller. The isolation sleeve is placed outside the magnetic conveyor belt, and its outer length is greater than that of the magnetic conveyor belt. Utilizing the principle that the magnetic force decreases as the distance gradually increases, when the iron material moves with the isolation sleeve and gradually approaches the end of the magnetic conveyor belt, the isolation sleeve widens the distance between the iron material and the magnetic conveyor belt, allowing the iron material to fall smoothly and naturally. This not only results in high material dropping efficiency but also prevents it from scratching the conveyor belt or other equipment. 2. This invention uses a reciprocating horizontal bar to lift the dragged iron. Because the cylinder is in an intermittent reciprocating motion, it directly pushes the dragged iron up, making the dragged iron closer to the magnetic conveyor belt and be steadily attracted. This effectively avoids the situation where the attracted iron has unstable magnetic force and too weak magnetic force. In such cases, after the dragged iron leaves the conveyor belt, it will sway slightly and, combined with gravity, the iron below will easily fall directly and have difficulty entering the iron collection box at the back. 3. By setting up a tight belt roller to squeeze the isolation sleeve, the bottom surface of the isolation sleeve forms a ramp with a set inclination angle, thereby creating a stepped gap between the iron material on the bottom surface and the magnetic conveyor belt. This creates several iron material collection areas on the right side of the conveyor belt, and the iron material collected in each area is subjected to different magnetic forces, achieving the effect of grading, sorting and recycling iron materials with different magnetic forces. 4. By setting up hydraulic rods and L-shaped connecting rod assemblies, the tensioning roller is driven to continue to move downward, increasing the maximum distance between the iron material and the magnetic conveyor belt. This allows the iron material to be further subdivided, avoiding the situation where all iron material exceeding the maximum magnetic attraction distance is grouped into one category. At this point, the iron material can be recycled in more levels, making it highly applicable. Attached Figure Description

[0016] Figure 1 This is an external perspective view of Embodiment 1 of the present invention; Figure 2 This is another external view of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the overall shell-free internal structure of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the external structure of the iron stripping component according to Embodiment 1 of the present invention; Figure 5 This is a cross-sectional view of the iron stripping component according to Embodiment 1 of the present invention; Figure 6 As in Embodiment 1 of the present invention Figure 5 A magnified structural diagram at point A; Figure 7 This is a schematic diagram of the iron material sorting component according to Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the limiting frame structure according to Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the material lifting component structure in Embodiment 2 of the present invention; Figure 10 This is an enlarged structural diagram of point B in Embodiment 2 of the present invention; Figure 11 This is a schematic diagram of the external structure of the distance adjustment component in Embodiment 3 of the present invention; Figure 12 This is Example 3 of the present invention. Figure 11 A magnified structural diagram at point C; Figure 13 This is a schematic diagram of the L-shaped linkage frame structure of Embodiment 3 of the present invention; Figure 14 This is Example 3 of the present invention. Figure 13 A magnified structural diagram at point D.

[0017] The components include: 1. Crusher; 2. Machine tool; 3. Conveyor belt; 4. Iron material sorting component; 41. Magnetic conveyor belt; 42. Miscellaneous material collection box; 43. Iron material collection box; 5. Iron material stripping component; 51. Isolation sleeve; 52. Support frame; 53. Transmission belt; 54. Support leg; 6. Drive component; 61. Gear motor; 62. Drive roller; 63. Driven roller; 7. Lifting component; 71. Crossbar; 72. Support rod; 73. Guide. 74. Slot; 75. Drive block; 8. Cylinder; 9. Limiting frame; 10. Vertical plate; 11. Inclined plate; 12. Flat plate; 13. Dust collection component; 14. Vacuum cleaner; 15. Air inlet pipe; 16. Air outlet pipe; 17. Dust collection box; 18. Outer shell; 19. First rod; 10. Cleaning brush; 10. Hydraulic rod; 11. Tightening roller; 10. Movable sleeve; 11. L-shaped linkage frame; 12. Slide rod; 13. Linkage rod; 14. Pull rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to the appendix Figure 1 -Appendix Figure 7The present invention provides a graded crushing and recycling device for construction waste in construction engineering, including a crusher 1, a machine tool 2 is arranged below the crusher 1, a conveyor belt 3 is detachably connected to the machine tool 2 by bolts, and an iron material sorting component 4 is also arranged on the machine tool 2; The crusher 1 can be a roller crusher 1. The construction waste fragments are placed inside the crusher 1 and fall onto the conveyor belt 3. The conveyor belt 3 runs slowly, carrying the fragments backward.

[0020] The iron material sorting component 4 includes a magnetic conveyor belt 41 set above the conveyor belt 3 with a set magnetic attraction distance, which is responsible for adsorbing iron material mixed in with the miscellaneous materials. The magnetic conveyor belt 41 adopts the permanent magnet adsorption type, with a built-in permanent magnet (or electromagnetic) module array, which is adjustable from 0-80N / cm². The magnetic force is adaptively adjusted according to the distance between the conveyor belt and the material. Its working principle is that the magnetic field penetrates the belt and forms a strong adsorption force on the belt surface, thereby "picking" the iron material out from the miscellaneous materials and achieving the purpose of precise sorting of iron material.

[0021] The magnetic conveyor belt 41 is provided with an iron stripping component 5 on its outside. The iron stripping component 5 includes an isolation sleeve 51 sleeved on the outer wall of the magnetic conveyor belt 41. The isolation sleeve 51 is equipped with a drive component 6 to help the isolation sleeve 51 and the magnetic conveyor belt 41 move synchronously. During the operation of the isolation sleeve 51, the distance between the iron material and the magnetic conveyor belt 41 gradually increases, and it falls off when it exceeds the magnetic attraction distance.

[0022] Since the outer perimeter of the isolation sleeve 51 is larger than that of the magnetic conveyor belt 41, when the iron material is attracted to the magnetic conveyor belt 41 (through the isolation sleeve 51), the iron material moves together with the magnetic conveyor belt 41 until it reaches the far right of the magnetic conveyor belt 41. Because the isolation sleeve 51 is located between the magnetic conveyor belt 41 and the iron material, the distance between the iron material and the magnetic conveyor gradually increases until it exceeds the magnetic attraction distance. Under the action of gravity, it falls freely, thus completing the purpose of sorting and collecting the iron material.

[0023] Since the magnetic conveyor belt 41 and the iron material are in close contact and there is no suspended adsorption, friction will be generated during the peeling process. However, by setting up the isolation sleeve 51, the magnetic force can be reduced as the distance gradually increases. When the gravity is greater than the magnetic force, the iron material can fall smoothly and naturally. This not only results in high material dropping efficiency but also makes it less likely to scratch the conveyor belt 3 or other equipment.

[0024] Specifically, it also includes an outer shell 10, which is disposed outside the conveyor belt 3 and the isolation sleeve 51 to protect them. The outer shell 10 has slots on both sides and an observation window on the front for easy observation of the sorting work. At the same time, a dust collection component 9 is provided on the top of the outer shell 10. The dust collection component 9 includes a vacuum cleaner 91. The input end of the vacuum cleaner 91 is fixedly connected to an air inlet pipe 92, and the output end of the vacuum cleaner 91 is fixedly connected to an air outlet pipe 93. A dust collection box 94 is fixedly connected to the outer wall of the outer shell 10.

[0025] The outer shell of the roller crusher 1 has rectangular holes. When the dust collector 91 is turned on, the dust generated during crushing is sucked into the dust collector 91 and discharged into the dust collection box 94 to achieve a dust-free workshop.

[0026] The driving component 6 includes a geared motor 61, the output end of which is fixedly connected to a driving roller 62. A driven roller 63 is also provided inside the isolation sleeve 51. The iron stripping component 5 also includes a support frame 52. A transmission belt 53 is fixedly sleeved on the outer end of the magnetic conveyor belt 41. The outer walls of the driving roller 62 and the driven roller 63 are both frictionally connected to the inner wall of the isolation sleeve 51. The outer wall of the transmission belt 53 is also frictionally connected to the inner wall of the isolation sleeve 51.

[0027] Specifically, the outer walls of the driving roller 62 and the driven roller 63 are provided with synchronous tooth grooves, the inner wall of the isolation sleeve 51 is provided with first synchronous belt teeth, the synchronous tooth grooves mesh with the first synchronous belt teeth for transmission, and the outer end of the transmission belt 53 is provided with second synchronous belt teeth, the first synchronous belt teeth mesh with the second synchronous belt teeth for transmission.

[0028] The geared motor 61 is electrically connected to a controller, which is also electrically connected to a magnetic conveyor belt 41. The magnetic conveyor belt 41 includes a magnetic belt, a magnetic matrix module, a transmission roller, and a control motor. The controller is responsible for controlling the starting and stopping of the motor and the speed control of the geared motor 61.

[0029] Friction grooves are formed on the driven roller 63, allowing both the driven roller 63 and the drive roller 62 to engage with the isolation sleeve 51. The isolation sleeve 51 is 1-3 mm thick, similar to the belt portion of the transmission belt 53, but slightly thinner. The inner wall has evenly distributed friction grooves, enabling the drive roller 62, driven by the reduction motor 61, to rotate the isolation sleeve 51 at a constant speed. Simultaneously, to ensure synchronous movement between the magnetic conveyor belt 41 and the isolation sleeve 51, i.e., identical linear speeds, the speed of the motor on the magnetic conveyor belt 41 can be controlled by a controller to match the speed of the reduction motor 61. This technology is a mature existing technology and will not be elaborated upon here.

[0030] Please see the appendix Figure 8A limit frame 8 is provided on the transmission belt 53. The limit frame 8 includes a vertical plate 81 and an inclined plate 82. The vertical plate 81 and the baffle are integrated and are responsible for concentrating the waste materials. A flat plate 83 is fixedly connected between a pair of inclined plates 82, which is used to ensure that the waste materials are evenly distributed and conveyed at a set thickness.

[0031] Specifically, after the scrap falls onto the conveyor belt 3, it passes through the limiting frame 8 and the inclined plate 82, where the width of the scrap is constrained. Then, after passing through the flat plate 83, the scrap is conveyed backward in a uniform manner with a certain thickness, so that the scrap can be conveyed in a flat manner, which is convenient for subsequent sorting of iron materials.

[0032] A waste collection box 42 is provided below the conveyor belt 3, and an iron collection box 43 is provided below the isolation sleeve 51.

[0033] During operation, the geared motor 61 and the control motor are turned on, and the magnetic conveyor belt 41 and the isolation sleeve 51 begin to rotate synchronously. The top and ground surfaces of the magnetic conveyor belt 41 are in close contact with the isolation sleeve 51. When the debris on the conveyor belt 3 is transported over, the debris begins to be evenly distributed at a certain height. As the magnetic conveyor belt 41 is close to the debris, the iron material is lifted by magnetic force and adheres to the outer wall of the isolation sleeve 51. As the isolation sleeve 51 and the magnetic conveyor belt 41 move, the iron material is separated from the debris and moves backward. The remaining debris continues to move and eventually falls into the debris collection box 42. When the adsorbed iron material is about to approach the end of the magnetic conveyor belt 41, it can continue to move with the isolation sleeve 51 due to the restriction of the isolation sleeve 51, and gradually increases the magnetic attraction distance from the magnetic conveyor belt 41, and finally falls naturally into the iron material collection box 43, thus completing the iron material sorting and recycling effect.

[0034] The drive roller 62 and the driven roller 63 are rotatably connected to the inner side of the support frame 52. Multiple support legs 54 are fixedly connected to the outer end of the support frame 52 and are fixedly connected to the machine tool 2.

[0035] A first rod 11 is provided on the support frame 52, and a cleaning brush 12 is fixedly sleeved on the outside of the first rod 11.

[0036] Specifically, the cleaning brush 12 is mounted on the support frame 52, which is equipped with an annular baffle. The first rod 11 is fixedly connected to the annular baffle. Since dust adheres to the iron material and then to the isolation sleeve 51, the cleaning brush 12 enables simple and automatic cleaning of the isolation sleeve 51.

[0037] Example 2: Please refer to the appendix Figure 9 -Appendix Figure 10 The difference between Embodiment 2 and Embodiment 1 is that the following technical features are added: a lifting component 7 is provided on the conveyor belt 3, the lifting component 7 includes multiple crossbars 71, multiple pairs of support rods 72 are fixedly connected on the conveyor belt 3, and the crossbars 71 are made of plastic and are cylindrical. Specifically, the inner diameter of the crossbar 71 is 0.5-3 cm, it is cylindrical and has a smooth outer wall design, so that the debris falling on it can fall smoothly and minimize the impact on the material conveying. The frequency of its up and down movement is adjusted according to the actual iron content and the material conveying speed.

[0038] A crossbar 71 is positioned between a pair of support bars 72, and it pushes the dragged iron material back and forth to facilitate its adsorption.

[0039] A guide groove 73 is provided on one side of the support rod 72. A drive block 74 is slidably connected inside the guide groove 73. The drive block 74 is fixedly connected to the end of the corresponding crossbar 71. A cylinder 75 is provided at the bottom of the guide groove 73 and is fixedly connected to the drive block 74. A return spring is also provided on the inner wall of the guide groove 73. One end of the return spring is fixedly connected to the top of the guide groove 73 and the other end is fixedly connected to the top of the drive block 74. A sliding groove is provided on the inner wall of the guide groove 73. A slide bar is fixedly connected to the outer wall of the drive block 74 and slides in the sliding groove, thereby reducing the friction force when the drive block 74 moves and reducing friction loss.

[0040] The height of the crossbar 71 is slightly lower than the top surface of the miscellaneous materials. After the iron material above is attracted by the magnetic conveyor belt, due to the principle that the magnetic domains in the iron are aligned when the iron comes into contact with the magnetic material, the iron material attracted by the magnetic conveyor belt is magnetized and acts as a temporary magnet. It begins to attract the iron material that is closest to it and is at the bottom along its moving path. This iron material is continuously dragged by the iron material above it. When it hits the crossbar 71, the crossbar 71 will lift the dragged iron material flat. At this time, the cylinder 75 is in an intermittent reciprocating motion state, directly pushing the dragged iron material up, so that the dragged iron material is closer to the magnetic conveyor belt 41 and is attracted. Using this method, iron materials that are difficult to be attracted can be re-attracted.

[0041] Although some of the dragged iron materials can continue to move due to the attraction of the iron materials, the magnetic force of the iron materials is unstable. After the iron materials are separated from the conveyor belt 3, the slight swaying combined with gravity causes the iron materials below to fall directly and make it difficult to enter the iron material collection box 43.

[0042] Example 3: Please refer to the appendix. Figure 11 -Appendix Figure 14 The difference between Embodiment 3 and Embodiment 1 is that the bottom surface of the isolation sleeve 51 initially forms a ramp with a set inclination angle, and the following technical features are added: The isolation sleeve 51 is provided with a distance adjustment component, which includes a hydraulic rod 13 located at the outer end of the support frame 52. A tension roller 14 is closely attached to the inside of the isolation sleeve 51. An L-shaped connecting rod assembly is provided on the tension roller 14. The hydraulic rod 13 drives the bottom surface of the isolation sleeve 51 to form a ramp with a set inclination angle through the L-shaped connecting rod assembly, thereby completing the synchronous transmission between the drive roller 62 and the isolation sleeve 51.

[0043] The L-shaped linkage assembly includes an L-shaped linkage frame 16, with a pair of sliding rods 17 slidably connected to the inner wall of the L-shaped linkage frame 16. A pull rod 19 is fixedly connected to the side end of the sliding rod 17, and a movable sleeve 15 is fixedly connected to the end of the pull rod 19. One of the movable sleeves 15 is fitted onto the tension roller 14, and the other movable sleeve 15 is fitted onto the drive roller 62.

[0044] Furthermore, in this embodiment, the outer walls of the driving roller 62 and the driven roller 63 are both connected to the inner wall of the isolation sleeve 51 by friction transmission, and the outer wall of the transmission belt 53 is also connected to the inner wall of the isolation sleeve 51 by friction transmission. That is, the outer walls of the driving roller 62 and the driven roller 63, the outer wall of the transmission belt 53 and the inner wall of the isolation sleeve 51 are all provided with friction textures that help transmission.

[0045] Initially, the tension roller 14 squeezes the isolation sleeve 51, causing the bottom surface of the isolation sleeve 51 to form a ramp with a set inclination angle, thereby creating a stepped gap between the iron material on the bottom surface and the magnetic conveyor belt 41. Assuming that two iron material collection areas are set on the right side of the conveyor belt 3, the iron material is graded, sorted, and recycled according to the magnitude of the magnetic force.

[0046] Because of the stepped spacing, iron materials at a distance ab from the magnetic conveyor belt 41 will automatically fall into area A, and iron materials at a distance bc will automatically fall into area B, thus avoiding iron materials of different sizes and shapes from falling into the same area.

[0047] Furthermore, staff can adjust the tilt angle according to actual needs. For example, if it is necessary to further subdivide the different types of iron materials that are attracted by magnetic force, a larger tilt angle is required.

[0048] Specifically, the geared motor 61 is slidably connected to the outer end of the support frame 52, and a U-shaped frame is slidably connected to the outer side of the geared motor 61. The U-shaped frame is fixedly connected to the support leg 54.

[0049] When hydraulic rod 13 is activated, its end moves downward, driving tension roller 14 to move downward. As tension roller 14 moves downward, it moves pull rod 19 via a pair of sliding rods 17 and linkage rod 18, causing drive roller 62 to move to the left until linkage rod 18 tilts at 45 degrees. Note: Initially, linkage rod 18 is horizontal. According to the Pythagorean theorem, when linkage rod 18 tilts at 45 degrees, the displacement of the pair of sliding rods 17 is the same, ensuring that drive roller 62 and isolation sleeve 51 remain in close contact. At this point, reducer motor 61 is activated again, and it can still move isolation sleeve 51 via drive roller 62.

[0050] At this point, due to the increased maximum spacing, the iron material can be further subdivided to avoid all being grouped into one category. Thus, the iron material can be recycled in more distinct grades.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A construction waste grading, crushing, and recycling device, comprising a crusher (1), a machine bed (2) disposed below the crusher (1), and a conveyor belt (3) disposed on the machine bed (2), characterized in that, The machine tool (2) is also equipped with an iron material sorting component (4); The iron material sorting component (4) includes a magnetic conveyor belt (41) set above the conveyor belt (3) with a set magnetic attraction distance, which is responsible for adsorbing iron material mixed in with the miscellaneous materials; The magnetic conveyor belt (41) is provided with an iron stripping component (5) on its outside. The iron stripping component (5) includes an isolation sleeve (51) sleeved on the outer wall of the magnetic conveyor belt (41). The isolation sleeve (51) is provided with a drive component (6) to help the isolation sleeve (51) and the magnetic conveyor belt (41) move synchronously. During the operation of the isolation sleeve (51), the distance between the iron material and the magnetic conveyor belt (41) gradually increases, and falls off when it exceeds the magnetic attraction distance. The conveyor belt (3) is equipped with a dust collection component (9) which is responsible for dust removal from the upper chamber of the crusher (1) and above the conveyor belt (3).

2. The construction waste grading, crushing, and recycling device for construction projects according to claim 1, characterized in that, The driving component (6) includes a geared motor (61), the output end of which is fixedly connected to a driving roller (62). The interior of the isolation sleeve (51) is also provided with a driven roller (63). The iron stripping component (5) also includes a support frame (52). The outer end of the magnetic conveyor belt (41) is fixedly fitted with a transmission belt (53). The outer walls of the driving roller (62) and the driven roller (63) are both connected to the inner wall of the isolation sleeve (51). The outer wall of the transmission belt (53) is also connected to the inner wall of the isolation sleeve (51).

3. The construction waste grading, crushing, and recycling device for construction projects according to claim 2, characterized in that, Both the drive roller (62) and the driven roller (63) have synchronous tooth grooves on their outer walls. The inner wall of the isolation sleeve (51) has a first synchronous belt tooth. The synchronous tooth groove meshes with the first synchronous belt tooth for transmission. The outer end of the transmission belt (53) has a second synchronous belt tooth. The first synchronous belt tooth meshes with the second synchronous belt tooth for transmission.

4. The construction waste grading, crushing, and recycling device for construction projects according to claim 2, characterized in that, The isolation sleeve (51) is provided with a distance adjustment component inside. The distance adjustment component includes a hydraulic rod (13) located at the outer end of the support frame (52). A tension roller (14) is closely attached to the inside of the isolation sleeve (51). An L-shaped connecting rod assembly is provided on the tension roller (14). The hydraulic rod (13) drives the bottom surface of the isolation sleeve (51) to form a ramp with a set inclination angle through the L-shaped connecting rod assembly, and at the same time completes the synchronous transmission between the drive roller (62) and the isolation sleeve (51).

5. The construction waste grading, crushing, and recycling device for construction projects according to claim 4, characterized in that, The L-shaped linkage assembly includes an L-shaped linkage frame (16), and a pair of sliding rods (17) are slidably connected to the inner wall of the L-shaped linkage frame (16). A pull rod (19) is fixedly connected to the side end of the sliding rod (17), and a movable sleeve (15) is fixedly connected to the end of the pull rod (19). One of the movable sleeves (15) is sleeved on the tension roller (14), and the other movable sleeve (15) is sleeved on the drive roller (62). The outer ends of the pair of sliding rods (17) are rotatably connected to a linkage rod (18) by a pin.

6. The construction waste grading, crushing, and recycling device for construction projects according to claim 3, characterized in that, The conveyor belt (3) is provided with a lifting component (7), which includes multiple crossbars (71). Multiple pairs of support rods (72) are fixedly connected to the conveyor belt (3). The crossbars (71) are made of plastic and are cylindrical. The crossbars (71) are located between a pair of support rods (72) and push the dragged iron material back and forth to facilitate its adsorption.

7. The construction waste grading, crushing, and recycling device for construction projects according to claim 6, characterized in that, A guide groove (73) is provided on one side of the support rod (72). A drive block (74) is slidably connected inside the guide groove (73). The drive block (74) is fixedly connected to the end of the corresponding crossbar (71). A cylinder (75) is fixedly connected to the drive block (74) at the bottom of the guide groove (73).

8. The construction waste grading, crushing, and recycling device for construction projects according to claim 7, characterized in that, The transmission belt (53) is provided with a limit frame (8), which includes a vertical plate (81) and an inclined plate (82). The vertical plate (81) and the baffle are connected in an integrated manner, which is responsible for concentrating the miscellaneous materials.

9. The construction waste grading, crushing, and recycling device for construction projects according to claim 8, characterized in that, A flat plate (83) is fixedly connected between a pair of inclined plates (82) for conveying the scrap material in a uniform manner with a set thickness.

10. The construction waste grading, crushing, and recycling device for construction projects according to claim 1, characterized in that, The dust collection component (9) includes a vacuum cleaner (91), with an air inlet pipe (92) fixedly connected to the input end of the vacuum cleaner (91) and an air outlet pipe (93) fixedly connected to the output end of the vacuum cleaner (91). A dust collection box (94) is fixedly connected to the outer wall of the outer shell (10), a debris collection box (42) is provided below the conveyor belt (3), and an iron material collection box (43) is provided below the isolation sleeve (51).

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