Asphalt pavement material recovery device

Abstract

The utility model discloses an asphalt pavement material recovery device which comprises a turning and throwing unit, a material receiving and conveying assembly, a transfer conveying assembly, a crushing unit and a discharging and conveying assembly, the turning and throwing unit comprises a rack, a roller rotationally arranged on the rack and a first driver used for driving the roller to rotate, the roller is horizontally arranged, and a plurality of screen holes are formed in the side wall of the roller; the material receiving and conveying assembly is arranged below the roller so as to receive materials screened out of the roller. The input end of the transfer conveying assembly is in butt joint with the output end of the material receiving conveying assembly, and the output end of the transfer conveying assembly is in butt joint with the input end of the crushing unit. After materials enter the roller, the roller turns and throws the materials in the rotating process. The adhesion fragments are decomposed in advance, so that the number of the adhesion large fragments conveyed to the crushing unit is effectively reduced, the load of the crushing device is greatly reduced, and the crushing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt recycling equipment, and in particular to an asphalt pavement material recycling device. Background Technology

[0002] Asphalt pavement material recycling involves a series of physical and chemical treatment steps to transform waste asphalt mixtures into reusable recycled materials. This typically involves using a cold milling machine to cut the old asphalt pavement into small pieces (usually 20-50mm in diameter). These pieces are then loaded onto trucks and transported to a processing site, where a crushing device further breaks them down to the target particle size (e.g., 10-20mm). However, because old asphalt mixtures contain asphalt binders, the pieces tend to stick together after being transported back to the stockpile due to the temperature equivalence principle of asphalt. This is more likely to occur when the asphalt content is high and during hot summer weather. The resulting bulky pieces increase the load on the crushing device, reducing its efficiency. Utility Model Content

[0003] In view of this, the present invention proposes an asphalt pavement material recycling device, which aims to solve the problem of increased load on the crushing device and reduced crushing efficiency caused by the adhesion of asphalt fragments.

[0004] The solution provided by this utility model includes:

[0005] An asphalt pavement material recycling device, comprising:

[0006] Turning and turning unit, receiving conveyor assembly, transfer conveyor assembly, crushing unit, and discharge conveyor assembly;

[0007] The turning and turning unit includes a frame, a roller rotatably mounted on the frame, and a first driver for driving the roller to rotate. The roller is horizontally positioned, and the side wall of the roller is provided with multiple sieve holes.

[0008] The receiving and conveying assembly is located below the drum to receive the material screened out from the drum;

[0009] The input end of the transfer conveying component is connected to the output end of the receiving conveying component, and the output end of the transfer conveying component is connected to the input end of the crushing unit.

[0010] The crushing unit is used to crush materials;

[0011] The input end of the discharge conveying component is connected to the output end of the crushing unit.

[0012] As a further optional solution, the turning and throwing unit also includes a enclosure structure disposed on the frame, the enclosure structure including side baffles disposed on the left and right sides of the drum, and a top baffle disposed above the drum;

[0013] An inclined guide plate is provided on the inner side of the side baffle. The lower end of the inclined guide plate is located above the material receiving and conveying assembly, and the higher end of the inclined guide plate is connected to the side baffle.

[0014] As a further optional solution, the inside of the roller is provided with multiple protruding ribs, the length direction of which is arranged along the axial direction of the roller, and the multiple protruding ribs are arranged on the inner wall of the roller and distributed at intervals along the circumference.

[0015] As a further optional solution, the outer periphery of the roller is provided with an annular guide groove, and the frame is provided with multiple guide wheels. The guide wheels are in frictional engagement with the inner wall of the annular guide groove, and the first driver is driven to at least one of the guide wheels to drive the guide wheel to rotate.

[0016] As a further optional solution, the crushing unit includes a base, a rotating shaft rotatably mounted on the base, and a second drive for driving the rotating shaft to rotate;

[0017] A crushing chamber is formed inside the machine base. The top of the machine base is provided with a feed inlet, and the bottom of the machine base is provided with a discharge outlet.

[0018] The rotating shaft is equipped with multiple radially arranged impact hammers, which are located inside the crushing chamber.

[0019] The crushing chamber is also equipped with a base, which is arc-shaped in general. It has an arc-shaped inner side and an arc-shaped outer side with the rotating shaft as the axis. The base is located between the impact hammer and the discharge port. There is a certain gap between the arc-shaped inner side and the impact hammer. Multiple through screen gaps are formed between the arc-shaped inner side and the arc-shaped outer side.

[0020] As a further optional solution, the length direction of the screen slot is arranged along the axial direction of the rotating shaft, and the cross-section of the screen slot is conical, with a narrower width at the end near the impact hammer and a wider width at the end away from the impact hammer.

[0021] As a further optional solution, the base includes a lower base body and an upper base body. The lower base body has arc-shaped mounting grooves on its two opposite inner sidewalls, and the upper base body has a pressing part corresponding to the port position of the arc-shaped mounting groove.

[0022] The base is composed of multiple sheet metal parts, each sheet metal part including a horizontal plate and an abutment plate disposed on the side of the horizontal plate. Both ends of the horizontal plate are disposed in the arc-shaped mounting groove of the lower base body. The extrusion part is used to extrude the sheet metal parts.

[0023] As a further optional solution, the receiving conveyor assembly, the transfer conveyor assembly, and the discharging conveyor assembly are all belt conveyors.

[0024] Compared with the prior art, the asphalt pavement material recycling device of this application has at least the following advantages:

[0025] This asphalt pavement material recycling device is equipped with a turning and tumbling unit, which includes a drum with perforated screens. When material enters the drum, it is turned and tumbled during rotation. This turning and tumbling action separates adhered fragments, breaking down their bonding structure. By pre-decomposing these adhered fragments, the number of large, adhered fragments transported to the crushing unit is effectively reduced, significantly lowering the load on the crushing device, improving crushing efficiency, and extending its service life. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an asphalt pavement material recycling device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the turning and throwing unit in an embodiment of this utility model (the enclosure structure is hidden).

[0028] Figure 3 This is a side sectional view of the turning and throwing unit in an embodiment of this utility model;

[0029] Figure 4 yes Figure 2 Enlarged view of A in the middle;

[0030] Figure 5 This is a cross-sectional schematic diagram of the crushing unit in an embodiment of this utility model;

[0031] Figure 6 This is an exploded schematic diagram of the crushing unit in an embodiment of this utility model;

[0032] Figure 7 yes Figure 5 Enlarged view of B in the middle;

[0033] Figure 8 This is a cross-sectional view of the base being installed within the lower body.

[0034] Figure 9 This is a structural diagram of the base;

[0035] In the diagram: 1. Turning and turning unit; 11. Frame; 111. Inclined guide plate; 112. Guide wheel; 12. Drum; 121. Screen hole; 122. Raised bar; 123. Annular guide groove; 13. First driver; 14. Enclosure structure; 141. Side baffle; 142. Top baffle;

[0036] 2. Material receiving and conveying assembly;

[0037] 3. Transfer and conveying components;

[0038] 4. Crushing unit; 41. Base; 41a. Lower base; 41b. Upper base; 411. Crushing chamber; 412. Feed inlet; 413. Discharge outlet; 414. Arc-shaped mounting groove; 415. Extrusion section; 42. Rotating shaft; 421. Impact hammer; 43. Base; 43a. Arc-shaped inner side; 43b. Arc-shaped outer side; 431. Screen gap; 432. Sheet metal body; 432a. Horizontal plate; 432b. Abutment plate;

[0039] 5. Discharge conveyor assembly. Detailed Implementation

[0040] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0041] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0044] refer to Figures 1 to 9 This utility model discloses an asphalt pavement material recycling device, including a turning and composting unit 1, a receiving and conveying assembly 2, a transfer and conveying assembly 3, a crushing unit 4, and a discharge and conveying assembly 5. The turning and composting unit 1 includes a frame 11, a roller 12 rotatably mounted on the frame 11, and a first driver 13 for driving the roller 12 to rotate. The roller 12 is horizontally arranged, and its side wall is provided with a plurality of screen holes 121. The receiving and conveying assembly 2 is located below the roller 12 to receive the material screened out by the roller 12. The input end of the transfer and conveying assembly 3 is connected to the output end of the receiving and conveying assembly 2, and the output end of the transfer and conveying assembly 3 is connected to the input end of the crushing unit 4. The crushing unit 4 is used to crush the material. The input end of the discharge and conveying assembly 5 is connected to the output end of the crushing unit 4.

[0045] Specifically, asphalt material (i.e., fragments) is fed into the drum 12, and the first driver 13 drives the drum 12 to rotate on the frame 11. During rotation, the drum 12 tumbles and throws the fragments. This tumbling action separates the adhered fragments and breaks down the adhesion between them. By decomposing the adhered fragments in advance, the number of large, adhered fragments conveyed to the crushing unit 4 is effectively reduced, greatly reducing the load on the crushing device, improving crushing efficiency, and extending the service life of the crushing device.

[0046] In one example, when old asphalt pavement is cut into fragments with a particle size of 20-50mm, the aperture of the screen hole 121 on the roller 12 can be designed to be 50-55mm. Only fragments with a broken adhesive structure can pass through the screen hole 121. The fragments fall to the receiving and conveying assembly 2 below the roller 12 and are conveyed away by the receiving and conveying assembly 2. The intermediate conveying assembly 3 connects the receiving and conveying assembly 2 and the crushing unit 4, so that the fragments with a broken adhesive structure can enter the crushing unit 4 for further crushing, for example, crushing to a particle size of 10-20mm. Then, the fragments are conveyed to the next process by the discharge conveying assembly 5.

[0047] In some embodiments, such as Figures 1 to 3 As shown, the turning and throwing unit 1 also includes a enclosure structure 14 disposed on the frame 11. The enclosure structure 14 includes side baffles 141 disposed on the left and right sides of the roller 12, and a top baffle 142 disposed above the roller 12. An inclined guide plate 111 is provided on the inner side of the side baffle 141. The lower end of the inclined guide plate 111 is located above the receiving and conveying assembly 2, and the higher end of the inclined guide plate 111 is connected to the side baffle 141.

[0048] The faster the rotation speed of the drum 12, the more violently the fragments are tumbled and thrown within the drum 12, making it easier to break the adhesive structure between the fragments. Conversely, if the rotation speed of the drum 12 is too high, it may generate a large centrifugal force on the fragments, causing them to fly out from the sides, top, or other locations of the drum 12. In this embodiment, by setting up a barrier structure 14, on the one hand, it can block the flying fragments, ensuring personal safety; on the other hand, if... Figure 3 As shown, through the guiding effect of the enclosure structure 14 and the inclined guide plate 111, the fragments can all land on the receiving and conveying assembly 2 after they fly out.

[0049] In some embodiments, such as Figure 3 As shown, the inside of the roller 12 is provided with multiple protrusions 122. The length direction of the protrusions 122 is arranged along the axial direction of the roller 12. The multiple protrusions 122 are arranged on the inner wall of the roller 12 and distributed circumferentially.

[0050] In this embodiment, when the fragments roll along the inner wall of the roller 12, they are blocked by the protrusion 122, causing the fragments to collide with the protrusion 122 and promoting the separation of the adhered fragments. In this embodiment, the protrusion 122 is a metal profile welded to the inner wall of the roller 12.

[0051] In some embodiments, to facilitate the rotation of the drive roller 12, such as Figure 2 and Figure 4 As shown, the outer circumference of the roller 12 is provided with an annular guide groove 123, and the frame 11 is provided with a plurality of guide wheels 112. The guide wheels 112 are in frictional engagement with the inner wall of the annular guide groove 123. The first driver 13 is connected to at least one of the guide wheels 112 to drive the guide wheel 112 to rotate. The first driver 13 is a motor, and the first driver 13 and the guide wheel 112 are connected by chain drive or belt drive. There are at least two annular guide grooves 123, and each annular guide groove 123 is supported by at least two guide wheels 112.

[0052] In some embodiments, one structure of the breaking unit 4 is also provided, such as Figures 5 to 9As shown, the crushing unit 4 includes a base 41, a rotating shaft 42 rotatably mounted on the base 41, and a second driver (not shown) for driving the rotating shaft 42 to rotate. A crushing chamber 411 is formed inside the base 41. The top of the base 41 is provided with a feed inlet 412, and the bottom is provided with a discharge outlet 413. Multiple radially arranged impact hammers 421 are provided on the rotating shaft 42, and the impact hammers 421 are located inside the crushing chamber 411. A base 43 is also provided inside the crushing chamber 411. The base 43 is generally arc-shaped and has an arc-shaped inner side 43a and an arc-shaped outer side 43b with the rotating shaft 42 as the axis. The base 43 is located between the impact hammers 421 and the discharge outlet 413. There is a certain gap between the arc-shaped inner side 43a and the impact hammers 421. Multiple through-holes 431 are formed between the arc-shaped inner side 43a and the arc-shaped outer side 43b.

[0053] The transfer conveyor assembly 3 conveys the broken pieces to the feed inlet 412 at the top of the base 41. The broken pieces enter the crushing chamber 411 from the feed inlet 412. Under the rotation of the shaft 42 driven by the second driver, the impact hammer 421 impacts the broken pieces, and the impact hammer 421 and the base 43 can produce a grinding effect on the broken pieces.

[0054] Furthermore, the length direction of the screen slot 431 is arranged along the axial direction of the rotating shaft 42, and the cross-section of the screen slot 431 is conical, with a narrower width at the end near the impact hammer 421 and a wider width at the end away from the impact hammer 421. Figure 7 As shown, the width of the end of the screen slit 431 near the impact hammer 421 is L1, and the width of the end of the screen slit 431 away from the impact hammer 421 is L2, where L1 is less than L2. Thus, when the particle size of the fragments is large enough to enter the screen slit 431, the particle size of the fragments is less than or equal to L1. As the screen slit 431 gradually widens, the fragments are less likely to clog the screen slit 431.

[0055] Furthermore, the base 41 includes a lower base body 41a and an upper base body 41b. The lower base body 41a has arc-shaped mounting grooves 414 on both opposite inner sidewalls. The upper base body 41b has extrusion parts 415 corresponding to the port positions of the arc-shaped mounting grooves 414. The base 43 is composed of multiple sheet metal bodies 432. Each sheet metal body 432 includes a horizontal plate 432a and an abutment plate 432b disposed on the side of the horizontal plate 432a. Both ends of the horizontal plate 432a are disposed in the arc-shaped mounting grooves 414 of the lower base body 41a. The extrusion parts 415 are used to extrude the sheet metal bodies 432.

[0056] The base 43 is composed of multiple sheet metal parts 432, such as Figure 7As shown, the arc-shaped inner surface 43a forms a micro-tooth structure with certain undulations, which makes the impact hammer 421 and the arc-shaped inner surface 43a have a better grinding effect on the fragments and improve the crushing efficiency.

[0057] In this embodiment, the extrusion part 415 is a metal plate fixedly installed on the upper seat 41b. The upper seat 41b and the lower seat 41a are locked together by a bolt assembly. The extrusion part 415 extrudes the sheet metal body 432, so that multiple sheet metal bodies 432 are arranged closely together. The abutment plate 432b on the sheet metal body 432 enables the screen gap 431 to be formed between the horizontal plates 432a, reducing the processing difficulty of the screen gap 431.

[0058] Of course, in other embodiments, other existing crushing units 4 can also be used to process the fragments after they have been processed by the turning and throwing unit 1.

[0059] Specifically, in the above scheme, the receiving conveyor assembly 2, the transfer conveyor assembly 3, and the discharging conveyor assembly 5 are all belt conveyors.

[0060] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0061] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An asphalt pavement material recycling device, characterized in that, include: Turning and turning unit, receiving conveyor assembly, transfer conveyor assembly, crushing unit, and discharge conveyor assembly; The turning and turning unit includes a frame, a roller rotatably mounted on the frame, and a first driver for driving the roller to rotate. The roller is horizontally positioned, and the side wall of the roller is provided with multiple sieve holes. The receiving and conveying assembly is located below the drum to receive the material screened out from the drum; The input end of the transfer conveying component is connected to the output end of the receiving conveying component, and the output end of the transfer conveying component is connected to the input end of the crushing unit. The crushing unit is used to crush materials; The input end of the discharge conveying component is connected to the output end of the crushing unit.

2. The asphalt pavement material recycling device according to claim 1, characterized in that: The turning and tumbling unit also includes a enclosure structure installed on the frame, the enclosure structure including side baffles installed on the left and right sides of the drum, and a top baffle installed above the drum; An inclined guide plate is provided on the inner side of the side baffle. The lower end of the inclined guide plate is located above the material receiving and conveying assembly, and the higher end of the inclined guide plate is connected to the side baffle.

3. The asphalt pavement material recycling device according to claim 2, characterized in that: The inside of the roller is provided with multiple protruding ribs, the length direction of which is arranged along the axial direction of the roller, and the multiple protruding ribs are arranged on the inner wall of the roller and distributed at intervals along the circumference.

4. The asphalt pavement material recycling device according to claim 3, characterized in that: The outer circumference of the roller is provided with an annular guide groove, and the frame is provided with multiple guide wheels. The guide wheels are in frictional engagement with the inner wall of the annular guide groove. The first driver is connected to at least one of the guide wheels to drive the guide wheel to rotate.

5. The asphalt pavement material recycling device according to claim 1, characterized in that: The crushing unit includes a base, a rotating shaft rotatably mounted on the base, and a second driver for driving the rotating shaft to rotate. A crushing chamber is formed inside the machine base. The top of the machine base is provided with a feed inlet, and the bottom of the machine base is provided with a discharge outlet. The rotating shaft is equipped with multiple radially arranged impact hammers, which are located inside the crushing chamber. The crushing chamber is also equipped with a base, which is arc-shaped in general. It has an arc-shaped inner side and an arc-shaped outer side with the rotating shaft as the axis. The base is located between the impact hammer and the discharge port. There is a certain gap between the arc-shaped inner side and the impact hammer. Multiple through screen gaps are formed between the arc-shaped inner side and the arc-shaped outer side.

6. The asphalt pavement material recycling device according to claim 5, characterized in that: The length of the screen slot is arranged along the axial direction of the rotating shaft. The cross-section of the screen slot is conical, with a narrower width at the end near the impact hammer and a wider width at the end away from the impact hammer.

7. The asphalt pavement material recycling device according to claim 6, characterized in that: The base includes a lower base body and an upper base body. The lower base body has arc-shaped mounting grooves on its two opposite inner sidewalls, and the upper base body has a pressing part corresponding to the port position of the arc-shaped mounting groove. The base is composed of multiple sheet metal parts, each sheet metal part including a horizontal plate and an abutment plate disposed on the side of the horizontal plate. Both ends of the horizontal plate are disposed in the arc-shaped mounting groove of the lower base body. The extrusion part is used to extrude the sheet metal parts.

8. The asphalt pavement material recycling device according to claim 1, characterized in that: The receiving conveyor assembly, the transfer conveyor assembly, and the discharging conveyor assembly are all belt conveyors.

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