Pavement asphalt waste recovery treatment and cyclic utilization device

Abstract

The invention relates to the technical field of solid waste treatment and treatment, in particular to a pavement asphalt waste recovery treatment and cyclic utilization device which comprises an outer vertical cylinder, a storage cavity is formed in the outer vertical cylinder, and a plurality of asphalt uniform mixing separators are distributed in the inner circumference of the storage cavity in an array mode. A multi-direction feeding assembly is rotationally installed at the position of a center hole of the follow-up disc, and a differential planet driving mechanism is installed at the top of the storage cavity and meshed with an external driving gear. And the asphalt discharging end of each asphalt uniform mixing separator and each crushed waste feeding end of the multidirectional feeding assembly are coaxially arranged. According to the invention, asphalt is heated and gasified at high temperature, and the differential planetary driving mechanism is used for driving the asphalt uniform mixing separator, so that crushed waste is uniformly heated, efficient separation of asphalt and concrete is effectively realized, the amount of impurities doped in asphalt can be greatly reduced, and asphalt residues caused by non-uniform heating are also reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of solid waste treatment and management, and in particular to a device for recycling and reusing road surface asphalt waste. Background Art

[0002] If road surface asphalt waste is discarded or landfilled randomly, it will occupy a large amount of land resources, may also pollute the soil and groundwater, and is also a waste of resources. Through recycling and treatment, the emission of solid waste can be reduced and the damage to the ecological environment can be reduced. Therefore, at present, the road surface asphalt waste is usually recycled to realize the utilization of resources.

[0003] After retrieval, a patent document with the patent application number 201910640409.2 discloses a waste road surface asphalt recycling and treatment system. From the description of its content, it can be seen that the following problems exist in the recycling and treatment of waste road surface asphalt: First, although the gravel stirring member can stir the gravel with asphalt, the stirring uniformity is insufficient; due to factors such as the distribution of the feeding teeth on the steel column and the driving mode of the stirring motor, the materials cannot be fully and evenly stirred in the central melting cavity.

[0004] Second, in the heating structure of the heating cavity for the central melting cavity, the temperature in the area close to the heat source is higher, and the temperature in the area far from the heat source is lower, resulting in inconsistent asphalt liquefaction degree and poor separation effect.

[0005] Third, the melting furnace adopts a square concentric ring structure, which makes the material flow path in the central melting cavity relatively complex. After the asphalt melts, some melted asphalt may form a local retention area in the cavity and cannot pass smoothly through the circulation holes on the supporting plate.

[0006] It can be seen from this that it is particularly necessary to propose a new device for recycling and reusing road surface asphalt waste to quickly solve the problems existing in the existing equipment during the recycling process of asphalt waste. Summary of the Invention

[0007] To solve one of the above technical problems, the technical solution adopted by the present invention is: a device for recycling and reusing road surface asphalt waste, including a fixed outer vertical cylinder, a storage cavity is arranged inside the outer vertical cylinder, and a plurality of asphalt homogenizing separators are circumferentially and arrayedly distributed inside the storage cavity. The bottom of each asphalt homogenizing separator is correspondingly inserted into a corresponding rotating hole of a follower disk. A multi-directional feeding component is rotatably installed at the central hole of the follower disk. The multi-directional feeding component is used to receive the crushed waste conveyed by upstream pneumatic conveying and pneumatically feed it to the bottom of each asphalt homogenizing separator. A differential planetary drive mechanism is installed at the top of the storage cavity. The differential planetary drive mechanism is engaged with an external drive gear. The asphalt discharge end of each asphalt homogenizing separator and the crushed waste feeding end of each multi-directional feeding component are coaxially arranged. The asphalt discharge end is connected to an external drainage fan.

[0008] In any of the above solutions, preferably, the multi-directional feeding component includes a vertically arranged sun shaft feeding pipe, and a multi-directional guiding component is installed at the bottom of the sun shaft feeding pipe.

[0009] The sun shaft feeding pipe serves as a conveying channel for the crushed waste and receives the waste from the upstream pneumatic conveying equipment. The multi-directional guiding component diverts the waste in the sun shaft feeding pipe and guides it to the corresponding feeding paths of each asphalt homogenizing separator. Through the combination of the sun shaft feeding pipe and the multi-directional guiding component, the efficient distribution of the crushed waste is achieved, ensuring that each asphalt homogenizing separator can receive a uniform feeding supply.

[0010] In any of the above solutions, preferably, a drainage pipe is installed at the discharge end of each asphalt homogenizing separator. The upper end of each drainage pipe movably passes out above a fixed disk. The fixed disk is fixedly arranged. The top of the sun shaft feeding pipe extends through the center of the upper tray and is above it. The lower end of each drainage pipe extends into its corresponding asphalt homogenizing separator. The top of each drainage pipe is used in cooperation with an external drainage fan.

[0011] In any of the above solutions, preferably, the flanges on the outer side walls of the upper parts of each drainage pipe and the sun shaft feeding pipe are correspondingly supported in the corresponding support bearing seats on the top of the fixed disk to ensure that each drainage pipe and the sun shaft feeding pipe can bear gravity in the vertical direction.

[0012] Preferably, in any of the above solutions, the differential planetary drive mechanism includes a driven gear that interacts and abuts against the top of the storage cavity. An intermediate planetary transmission is installed inside the driven gear. The intermediate planetary transmission includes an internal gear ring fixed to the inner side wall of the inner ring of the driven gear. An intermediate sun gear is fixed to the outer side wall of the upper part of the sun shaft feed pipe. A plurality of intermediate planetary gears are evenly spaced outside the intermediate sun gear. Each intermediate planetary gear is coaxially fixed to the outer side wall of its corresponding drainage pipe. The inner sides of the intermediate planetary gears mesh with the intermediate sun gear, and the outer sides mesh with the internal gear ring. A secondary planetary transmission is installed on the outer side wall of the sun shaft feed pipe above the intermediate sun gear. The secondary planetary transmission is used as the planet carrier of the intermediate planetary transmission.

[0013] Preferably, in any of the above solutions, the secondary planetary transmission is used to drive the vertical spiral feeding mechanism inside the asphalt homogenizing separator to operate and complete feeding into it.

[0014] Preferably, in any of the above solutions, the secondary planetary transmission includes a planet carrier that is movably sleeved on the outer side wall of the sun shaft feed pipe. Each rotating hole of the planet carrier is sleeved on the outer side wall of the drainage pipe. A secondary sun gear is fixedly installed on the top of the planet carrier. Secondary planetary gears are coaxially fixed to the outer side walls of the drainage pipes around the secondary sun gear. The secondary planetary gears drive the vertical spiral feeding mechanism inside the asphalt homogenizing separator to operate. A secondary gear ring is coaxially arranged around the secondary sun gear. The top of the secondary gear ring is fixedly arranged. The secondary gear ring meshes with each secondary planetary gear.

[0015] Preferably, in any of the above solutions, the asphalt homogenizing separator distributes the crushed waste materials entering it in a ring shape and vaporizes the asphalt under the action of electric heating and microwave heating, and then the vaporized asphalt is separated and led out by a drainage fan.

[0016] Preferably, in any of the above solutions, the bottom of the outer cylinder is provided with a conical aggregate part for accumulating the concrete materials to be discharged. Vibration motors are fixedly installed on the outer side walls on both sides of the conical aggregate part.

[0017] Preferably, in any of the above solutions, at the center bottom, an inner support ring for supporting the bottom of the sun shaft feed pipe is installed inside the pipe orifice at the feed end of the four-way elbow. Each output end of the four-way elbow extends vertically upward and reaches inside the corresponding vertical spiral feeding mechanism.

[0018] Preferably, in any of the above solutions, the asphalt homogenizing separator includes an external heating cylinder disposed inside the storage cavity. The top of the external heating cylinder is mounted at the bottom of the first-stage planetary gear of the differential planetary drive mechanism. A retaining ring is provided on the outer side wall of the lower part of the external heating cylinder, which abuts against the top of the follower disk. The bottom of the follower disk abuts against the top of a supporting ring that provides a supporting function. The outer side wall of the supporting ring is fixed to the inner wall of the storage cavity. A vertical spiral feeding mechanism is installed inside the heating cavity of the external heating cylinder. An annular heating space is formed between the vertical spiral feeding mechanism and the external heating cylinder. The annular heating space is used to store the crushed waste entering it. The top discharge port of the vertical spiral feeding mechanism communicates with the upper part of the heating cavity. The bottom of the vertical spiral feeding mechanism is cooperatively connected to the multi-way guiding component of the multi-way feeding assembly.

[0019] Preferably, in any of the above solutions, the vertical spiral feeding mechanism includes an internal heating cylinder coaxially disposed inside the external heating cylinder. The height of the internal heating cylinder is lower than that of the external heating cylinder. The annular heating space is formed between the internal heating cylinder and the external heating cylinder. The bottom of the outer side wall of the internal heating cylinder is movably and sealingly abutted against the inside of the external heating cylinder. The bottom of the internal heating cylinder is fixed to the outer side walls of the output ends of the corresponding four-way elbows. A spiral conveyor shaft is coaxially installed inside the conveying cavity of the internal heating cylinder. Spiral conveyor blades are provided on the outer side wall of the spiral conveyor shaft. The outer side wall of the spiral conveyor blades abuts and cooperates with the inner wall of the conveying cavity. The upper part of the spiral conveyor shaft extends above the internal heating cylinder and is fixedly connected to the bottom of the drainage pipe. A drainage channel communicating with the annular heating space is provided on the outer side wall of the lower part of the drainage pipe. The bottom of the spiral conveyor shaft extends to the output end of the four-way elbow. A feeding channel is provided at the lower part of the spiral conveyor shaft. A feeding communication port communicating with the feeding channel is provided on the outer side wall of the spiral conveyor shaft inside the conveying cavity. The feeding communication port is located above the first section of the spiral conveyor blades.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention adopts the method of heating and gasifying asphalt at high temperature, and uses the differential planetary drive mechanism to drive the asphalt homogenizing separator, so that the crushed waste is evenly heated, effectively realizing the efficient separation of asphalt and concrete. This can not only greatly reduce the amount of impurities doped in the asphalt, but also reduce the asphalt residue caused by uneven heating, significantly improve the recovery purity of asphalt and concrete, enhance the resource recovery rate, reduce the subsequent treatment cost, and improve the economic benefits of waste recycling.

[0021] 2. By placing the crushed waste in an annular heating space, combining the relative rotation of the external heating cylinder and the vertical spiral feeding mechanism, and the combination of electric heating and microwave heating, the heating contact area is enlarged, the tumbling and mixing of the materials are realized, and the heating efficiency and uniformity are improved. This enables the rapid gasification of asphalt, shortens the waste treatment time, and thus improves the processing efficiency of the entire device, meeting the requirements of large-scale waste treatment.

[0022] 3. The present invention can effectively process waste materials with different viscosities and particle sizes by adjusting the relative rotation speed of the external heating cylinder and the internal heating cylinder and the action frequency of the material pushing blocks, showing good adaptability; it enables the device to have a wider application range, making it applicable to road asphalt waste materials from various sources and with different characteristics, and improving the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or components are generally identified by similar reference numerals. In the drawings, the elements or components are not necessarily drawn to scale.

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] Figure 2 It is a schematic internal sectional structure diagram of the present invention in a state of cooperation with a driving gear.

[0026] Figure 3 It is a partial three-dimensional structural diagram of the present invention.

[0027] Figure 4 It is a partial internal sectional structure diagram of the present invention.

[0028] Figure 5 It is a schematic bottom view structural diagram of the four-way elbow of the present invention.

[0029] Figure 6 It is a partial front view structural diagram of each asphalt homogeneous mixer of the present invention.

[0030] Figure 7 For Figure 6 partial structural diagram.

[0031] Figure 8 It is a partial top view structural diagram of the differential planetary drive mechanism of the present invention.

[0032] In the figure: 1. Outer vertical cylinder; 2. Storage cavity; 3. Asphalt homogenizing separator; 4. Follow-up disk; 5. Driving gear; 6. Solar shaft feeding pipe; 7. Drainage pipe; 8. Fixed disk; 9. Support bearing seat; 10. Driven gear; 11. Internal gear ring; 12. First-stage sun gear; 13. First-stage planet gear; 14. Planet carrier; 15. Second-stage sun gear; 16. Second-stage planet gear; 17. Conical aggregate part; 18. Vibration motor; 19. Four-way elbow; 20. Inner support ring; 21. Outer heating cylinder; 22. Retaining ring; 23. Supporting ring; 24. Inner heating cylinder; 25. Screw conveyor shaft; 26. Screw conveyor blade; 27. Drainage channel; 28. Feed channel; 29. Feed connection port; 30. Microwave generator; 31. Solid material pipe; 32. Pushing block; 33. Bottom discharge port; 34. Second-stage gear ring. Detailed implementation mode

[0033] The embodiments of the technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, so they are only examples and cannot be used to limit the protection scope of the present invention. The specific structure of the present invention is as Figures 1-8 shown in the figure.

[0034] Embodiment 1: A device for recycling and reusing road asphalt waste, including an outer vertical cylinder 1 fixedly supported on the ground. A storage cavity 2 is arranged inside the outer vertical cylinder 1. A plurality of asphalt homogenizing separators 3 are distributed in a circumferential array inside the storage cavity 2. The bottom of each asphalt homogenizing separator 3 is inserted into a corresponding rotating hole of a follow-up disk 4. A multi-directional feeding component is rotatably installed at the central hole of the follow-up disk 4. The multi-directional feeding component is used to receive the crushed waste pneumatically conveyed from the upstream and pneumatically feed it to the bottom of each asphalt homogenizing separator 3. A differential planetary drive mechanism is installed at the top of the storage cavity 2. The differential planetary drive mechanism meshes with an external driving gear 5. The asphalt discharge ends of each asphalt homogenizing separator 3 and the crushed waste feeding ends of each multi-directional feeding component are coaxially arranged. The asphalt discharge end is connected to an external drainage fan.

[0035] When the device for recycling and reusing road asphalt waste in the present invention is working, the feeding end of the multi-directional feeding component needs to be connected to an external pneumatic conveying device first. Rely on the pneumatic conveying device to pneumatically convey the crushed waste after crushing into the multi-directional feeding component. After being multi-directionally separated by the multi-directional feeding component, it is respectively conveyed into the asphalt homogenizing separator 3 for microwave heating and temperature rise, controlling the power and time of microwave heating so that the asphalt can reach the gasification state. During the microwave heating process, control the operation of the differential planetary drive mechanism. While the differential planetary drive mechanism is operating, continue to complete the feeding supply of the crushed waste at the same time.

[0036] The operation of the differential planetary drive mechanism can ensure that the crushed waste entering the asphalt homogenizing separator 3 is evenly heated, and the uniform heating can better ensure the efficiency and effect of the asphalt gasification treatment.

[0037] The asphalt in the gasification state is drained out by the drainage fan connected to the asphalt discharge end (it is necessary to clean and maintain the equipment regularly to ensure smooth drainage). When the asphalt attached to the surface of the concrete aggregates is gasified and separated, the concrete can be directly discharged downward into the storage cavity 2 below each asphalt homogenizing separator 3, and when necessary, it can be discharged outward and recycled after being crushed by external equipment.

[0038] During the waste treatment process, it can reduce the asphalt residue caused by uneven heating and lower the subsequent treatment cost. By driving the asphalt homogenizing separator 3 with the differential planetary drive mechanism to evenly heat the waste and reasonably controlling the microwave heating, the asphalt residue is reduced.

[0039] The asphalt is gasified by high-temperature heating, and the separation is achieved by using the different physical states of asphalt and concrete. During the gasification process, impurities are not easily volatilized with the asphalt, thereby reducing the impurity content in the asphalt.

[0040] Preferably, in any of the above solutions, the multi-directional feeding component includes a vertically arranged sun shaft feeding pipe 6, and a multi-directional flow guiding component is installed at the bottom of the sun shaft feeding pipe 6.

[0041] The sun shaft feeding pipe 6 serves as the conveying channel for the crushed waste and receives the waste from the upstream pneumatic conveying equipment. The multi-directional flow guiding component diverts the waste in the sun shaft feeding pipe 6 and guides it to the feeding paths corresponding to each asphalt homogenizing separator 3. Through the combination of the sun shaft feeding pipe 6 and the multi-directional flow guiding component, the efficient distribution of the crushed waste is realized, ensuring that each asphalt homogenizing separator 3 can obtain a uniform feeding supply.

[0042] A flow monitoring device is installed on the sun shaft feeding pipe 6. By monitoring the flow rate of the waste, the power of the upstream pneumatic conveying equipment is adjusted in a timely manner to ensure the stability of the feeding. At the same time, if it is necessary to perform separate maintenance or adjustment on a specific asphalt homogenizing separator 3, the isolation operation of a single processing unit can be realized by closing the branch channel of the corresponding multi-directional flow guiding component.

[0043] Preferably, in any of the above solutions, a drainage pipe 7 is installed at the discharge end of each asphalt homogenizing separator 3. The upper ends of the drainage pipes 7 all pass through above a fixed disk 8 movably. The fixed disk 8 is fixedly arranged. The top of the sun shaft feeding pipe 6 extends above the center of the upper tray movably. The lower ends of the drainage pipes 7 all extend into their corresponding asphalt homogenizing separators 3, and the tops of the drainage pipes 7 cooperate with an external drainage fan.

[0044] After the gasified asphalt is generated in the asphalt homogenization separator 3, it flows upward through the drainage pipe 7 connected to the discharge end and under the negative pressure generated by the external drainage fan. The fixed disk 8 is used to support and position the drainage pipe 7 and the sun shaft feeding pipe 6 to ensure their stability during operation and ensure that the gasified asphalt can be smoothly led out by the device. Among them, the setting of the fixed disk 8 enhances the structural stability of the entire device, fixes the positions of the drainage pipe 7 and the sun shaft feeding pipe 6, avoids shaking or displacement during operation, and thus ensures the stable and reliable drainage process of the gasified asphalt and reduces the leakage risk caused by the shaking of the pipeline.

[0045] Preferably, in any of the above solutions, the flanges on the outer side walls of the upper parts of the drainage pipes 7 and the sun shaft feeding pipe 6 are all supported and fitted in the corresponding support bearing seats 9 on the top of the fixed disk 8 to ensure that the drainage pipes 7 and the sun shaft feeding pipe 6 can bear the gravity in the vertical direction.

[0046] By providing flanges on the outer side walls of the upper parts of the drainage pipe 7 and the sun shaft feeding pipe 6 and installing the flanges in the support bearing seats 9 on the top of the fixed disk 8, using the supporting effect of the support bearing seats 9 to offset the self-gravity of the drainage pipe 7 and the sun shaft feeding pipe 6 and the possible vertical forces generated during operation, the stability of the pipeline is ensured.

[0047] Preferably, in any of the above solutions, the differential planetary drive mechanism includes a driven gear 10 that interacts and abuts against the top of the storage cavity 2. An internal gear ring 11 is fixed on the inner side wall of the inner ring of the driven gear 10. A first-stage sun gear 12 is fixed on the outer side wall of the upper part of the sun shaft feeding pipe 6. A plurality of first-stage planetary gears 13 are evenly spaced on the outer side of the first-stage sun gear 12. Each of the first-stage planetary gears 13 is coaxially fixed on the outer side wall of its corresponding drainage pipe 7. The inner sides of the first-stage planetary gears 13 are meshed with the first-stage sun gear 12, and the outer sides are meshed with the internal gear ring 11. A second-stage planetary drive is installed on the outer side wall of the sun shaft feeding pipe 6 above the first-stage sun gear 12, and the second-stage planetary drive is used as the planet carrier of the first-stage planetary drive.

[0048] The external drive gear 5 drives the driven gear 10 to rotate, and the driven gear 10 drives the internal gear ring 11 to rotate. The internal gear ring 11 meshes with the first-stage planetary gears 13 and the first-stage sun gear 12, causing the first-stage planetary gears 13 to revolve around the first-stage sun gear 12 while rotating on their own axes. Since the first-stage planetary gears 13 are coaxially fixed on the drainage pipe 7, the drainage pipe 7 and the asphalt homogenization separator 3 connected thereto are driven to move. The second-stage planetary drive, as the planet carrier of the first-stage planetary drive, further transmits power and changes the motion mode to achieve the coordinated operation of each component.

[0049] The output speed of the first-stage planetary drive is different from the output speed of the second-stage planetary drive.

[0050] The different speeds of the two-stage planetary drive can form a variety of motion combinations to meet the different functional requirements of the equipment. The speed of the first-stage planetary drive can enable the asphalt homogenizing and separating device 3 to obtain appropriate revolution and rotation speeds, realizing uniform heating of the waste materials; the output speed of the second-stage planetary drive is precisely adapted to the feeding speed of the vertical spiral feeding mechanism, ensuring stable conveying and processing of the materials in the device, and improving the overall operating efficiency and processing effect of the equipment.

[0051] The speed of the first-stage planetary drive is mainly used to drive the asphalt homogenizing and separating device 3 to ensure that the waste materials are evenly heated in the annular heating space, realizing the gasification separation of asphalt; the output speed of the second-stage planetary drive is used to drive the vertical spiral feeding mechanism to continuously convey the crushed waste materials to the heating area, ensuring the continuity of the processing process. The difference in the speeds of the two cooperates to complete the coherent functions from feeding to heating and separation.

[0052] Preferably in any of the above solutions, the second-stage planetary drive is used to drive the operation of the vertical spiral feeding mechanism inside the asphalt homogenizing and separating device 3 and complete the feeding into it.

[0053] After the crushed waste materials enter the annular heating space of the asphalt homogenizing and separating device 3 through the vertical spiral feeding mechanism, they are distributed in a ring shape under the action of gravity and the movement of the mechanism. Electric heating and microwave heating act on the waste materials at the same time, raising the temperature of the asphalt to the gasification state. The gasified asphalt is separated and led out through the drainage pipe 7 under the negative pressure generated by the drainage fan. Heating the crushed waste materials in a ring shape increases the heating area and improves the heating efficiency. The combination of electric heating and microwave heating can more precisely control the heating temperature and speed, improve the asphalt gasification effect, and enhance the separation efficiency.

[0054] Preferably in any of the above solutions, the second-stage planetary drive includes a planetary carrier 14 movably sleeved on the outer side wall of the sun shaft feeding pipe 6. Each rotating hole of the planetary carrier 14 is sleeved on the outer side wall of the drainage pipe 7. A second-stage sun gear 15 is fixedly installed on the top of the planetary carrier 14. Second-stage planetary gears 16 are coaxially fixed on the outer side walls of the drainage pipe 7 around the second-stage sun gear 15 respectively. The second-stage planetary gears 16 drive the operation of the vertical spiral feeding mechanism inside the asphalt homogenizing and separating device 3. A second-stage gear ring 34 is coaxially arranged around the second-stage sun gear 15. The top of the second-stage gear ring 34 is fixedly arranged at the bottom of the fixed disk 8 through several columns. The second-stage gear ring 34 meshes with each of the second-stage planetary gears 16.

[0055] The planet carrier 14 moves along with the movement of the first-stage planetary drive, driving the second-stage sun gear 15 to rotate. The second-stage sun gear 15 meshes with the second-stage planetary gears 16. During the revolution and rotation of the second-stage planetary gears 16 around the second-stage sun gear 15, power is transmitted to the drainage pipe 7 connected coaxially therewith, thereby driving the vertical spiral feeding mechanism connected to the drainage pipe 7 to operate, realizing the conveyance of the crushed waste.

[0056] In any of the above solutions, preferably, the asphalt mixing and separating device 3 distributes the crushed waste entering its interior in a ring shape and vaporizes the asphalt under the action of electric heating and microwave heating, and then the vaporized asphalt is separated and led out by the drainage fan.

[0057] Heating the crushed waste distributed in a ring shape increases the heating area and improves the heating efficiency. The combined method of electric heating and microwave heating can more accurately control the heating temperature and speed, improve the asphalt vaporization effect, and enhance the separation efficiency.

[0058] In any of the above solutions, preferably, the bottom of the outer vertical cylinder 1 is provided with a conical aggregate part 17, and the conical aggregate part 17 is used for piling up the concrete material to be discharged. Vibration motors 18 are fixedly installed on the outer side walls on both sides of the conical aggregate part 17.

[0059] The separated concrete material falls downward under the action of gravity into the conical aggregate part 17 at the bottom of the outer vertical cylinder 1. When it is necessary to discharge the concrete material, the vibration motors 18 are started. The vibration generated by the vibration motors 18 loosens the concrete material in the conical aggregate part 17, overcoming the frictional force, facilitating discharge from the bottom discharge port 33. Among them, the design of the conical aggregate part 17 is conducive to the natural piling up and concentration of the concrete material, reducing the space occupation. The setting of the vibration motors 18 enhances the discharging effect, improves the discharging efficiency, and ensures that the concrete material can be discharged quickly and smoothly.

[0060] In any of the above solutions, preferably, the multi-way diversion component includes a four-way elbow 19. The feeding end at the center of the top of the four-way elbow 19 is fixed to the center bottom of the follower disk 4. An inner support ring 20 for supporting the bottom of the sun shaft feeding pipe 6 is installed inside the pipe orifice of the feeding end of the four-way elbow 19. Each output end of the four-way elbow 19 extends vertically upward and reaches the interior of the corresponding vertical spiral feeding mechanism.

[0061] The crushed waste enters the four-way elbow 19 from the sun shaft feeding pipe 6. The inner support ring 20 plays a role in supporting the sun shaft feeding pipe 6, ensuring its stability. The four-way elbow 19 diverts the waste and conveys it to the interior of the corresponding vertical spiral feeding mechanism through each output end respectively, realizing the distributed conveyance of the crushed waste.

[0062] Embodiment 2: Compared with Embodiment 1, the difference in this embodiment is that it further includes the following technical features: Preferably, in any of the above solutions, the asphalt homogenizing separator 3 includes an external heating cylinder 21 disposed inside the storage cavity 2. The top of the external heating cylinder 21 is mounted at the bottom of the first-stage planetary gear 13 of the differential planetary drive mechanism. A retaining ring 22 is provided on the outer side wall of the lower part of the external heating cylinder 21, which abuts against the top of the follower disk 4. The bottom of the follower disk 4 abuts against the top of a supporting ring 23 that provides a supporting function. The outer side wall of the supporting ring 23 is fixed to the inner wall of the storage cavity 2. A vertical spiral feeding mechanism is installed inside the heating cavity of the external heating cylinder 21. An annular heating space is formed between the vertical spiral feeding mechanism and the external heating cylinder 21. The annular heating space is used to store the crushed waste entering it. The top discharge port of the vertical spiral feeding mechanism is communicated with the upper part of the heating cavity, and the bottom of the vertical spiral feeding mechanism is cooperatively connected with the multi-way guiding component of the multi-way feeding assembly.

[0063] The first-stage planetary gear 13 of the differential planetary drive mechanism drives the external heating cylinder 21 to move. The external heating cylinder 21 rotates stably on the follower disk 4 through the retaining ring 22, and the follower disk 4 is supported by the supporting ring 23. The crushed waste enters the vertical spiral feeding mechanism through the multi-way guiding component, rises under the action of spiral transportation, enters the upper part of the heating cavity from the top discharge port, and falls into the annular heating space for heating treatment.

[0064] In the annular heating space, by combining electric heating and microwave heating, the asphalt in the crushed waste is heated to a gasification state, realizing the efficient separation of asphalt from concrete, which provides a basis for subsequent resource recycling. In addition, the vertical spiral feeding mechanism not only transports the crushed waste from the multi-way guiding component to the annular heating space, but also makes the waste evenly distributed in the heating cavity through its spiral movement, ensuring the uniformity of heating, improving the effect of asphalt gasification and the separation quality.

[0065] Preferably, in any of the above solutions, the vertical spiral feeding mechanism includes an inner heating cylinder 24 coaxially arranged inside the outer heating cylinder 21. The height of the inner heating cylinder 24 is lower than that of the outer heating cylinder 21. An annular heating space is formed between the inner heating cylinder 24 and the outer heating cylinder 21. The bottom of the outer side wall of the inner heating cylinder 24 is movably and sealingly abutted against the inside of the outer heating cylinder 21. The bottom of the inner heating cylinder 24 is fixed on the outer side walls of the output ends of the corresponding four-way elbows 19. A spiral conveyor shaft 25 is coaxially installed in the conveying cavity of the inner heating cylinder 24. Spiral conveyor blades 26 are arranged on the outer side wall of the spiral conveyor shaft 25. The outer side wall of the spiral conveyor blades 26 is abutted and cooperated with the inner wall of the conveying cavity. The upper part of the spiral conveyor shaft 25 extends above the inner heating cylinder 24 and is fixedly connected to the bottom of the drainage pipe 7. A drainage channel 27 communicating with the annular heating space is arranged on the outer side wall of the lower part of the drainage pipe 7. The bottom of the spiral conveyor shaft 25 extends to the output end of the four-way elbow 19. A feeding channel 28 is arranged at the lower part of the spiral conveyor shaft 25. A feeding communication port 29 communicating with the feeding channel 28 is arranged on the outer side wall of the spiral conveyor shaft 25 inside the conveying cavity. The feeding communication port 29 is located above the first section of blades of the spiral conveyor blades 26.

[0066] The inner heating cylinder 24 and the outer heating cylinder 21 form an annular heating space, which makes full use of the space inside the equipment, increases the heating area of the crushed waste, makes the heating more uniform and efficient, and is conducive to the rapid gasification and separation of asphalt.

[0067] Each component is compact and coaxially arranged, realizing various functions such as material conveying and heating in a limited space. The overall structure layout is reasonable, reducing the floor area of the equipment.

[0068] The bottom of the outer side wall of the inner heating cylinder 24 is movably and sealingly abutted against the inside of the outer heating cylinder 21, which not only ensures the relative stability of the inner heating cylinder 24 during operation but also prevents the leakage of crushed waste and hot gas, improving the safety and working efficiency of the equipment.

[0069] The outer side wall of the spiral conveyor blades 26 is abutted and cooperated with the inner wall of the conveying cavity, ensuring that there is no leakage or backflow of materials during the conveying process and guaranteeing the stability and continuity of material conveying.

[0070] The upper part of the spiral conveyor shaft 25 is fixedly connected to the bottom of the drainage pipe 7, making the power transmission more direct and efficient. When the spiral conveyor shaft 25 rotates, it can not only realize the conveying of materials but also lead out the gasified asphalt through the drainage pipe 7, realizing the coordinated work of material conveying and asphalt separation.

[0071] The bottom of the inner heating cylinder 24 is fixed on the outer side wall of the output end of the four-way elbow 19 and is closely matched with the multi-way guide component, ensuring that the crushed waste can smoothly enter the conveying cavity and achieving good connection between feeding and conveying.

[0072] During operation, the combination of the screw conveyor shaft 25 and the screw conveyor blade 26 conveys the crushed waste entering from the feeding channel 28 upward along the conveying cavity by rotation. The feeding communication port 29 is located above the first section of the screw conveyor blade 26, ensuring that the waste can smoothly enter the conveying cavity and be conveyed to the annular heating space. The annular heating space formed by the inner heating cylinder 24 and the outer heating cylinder 21 provides a heating environment for the crushed waste. The inner heating cylinder 24 can assist in heating and act together with the outer heating cylinder 21 to improve the heating effect and promote the gasification of asphalt.

[0073] In any of the above solutions, preferably, an anti-sticking alloy coating is sprayed on both the inner wall of the outer heating cylinder 21 and the outer wall of the inner heating cylinder 24. The anti-sticking alloy coating reduces the adhesion force between the crushed waste and the heating cylinder wall. During the heating process, substances such as asphalt in the crushed waste are difficult to adhere to the cylinder wall when contacting the anti-sticking alloy coating, reducing the accumulation and adhesion of materials and ensuring the smooth progress of the heating process.

[0074] The crushed waste entering the conveying cavity from the feeding communication port 29 is continuously lifted upward and conveyed into the annular heating space inside the outer heating cylinder 21 under the action of the screw conveyor blade 26. When the crushed waste enters the conveying cavity through the feeding communication port 29, the screw conveyor shaft 25 drives the screw conveyor blade 26 to rotate. When the special spiral shape of the screw conveyor blade 26 rotates, it will generate a thrust along the spiral direction on the crushed waste in contact with it. Due to the existence of this thrust, the crushed waste will overcome its own gravity and the friction force with the inner wall of the conveying cavity and continuously lift upward. Under the continuous rotation action, the crushed waste gradually moves upward along the trajectory of the screw conveyor blade 26 and is finally conveyed into the annular heating space inside the outer heating cylinder 21, thus realizing the directional conveying of materials inside the equipment.

[0075] In any of the above solutions, preferably, a plurality of microwave generators 30 are installed at intervals from top to bottom on the outer side wall of the outer heating cylinder 21; microwave generators 30 are installed at the bottom of each inner heating cylinder 24.

[0076] Among them, the crushed waste refers to the crushed materials of the pavement asphalt concrete after being crushed by the upstream crushing equipment.

[0077] Specific working principle: During operation, external crushed waste enters the feed pipe 6 of the sun shaft of the multi-directional feeding component under the action of pneumatic conveying, and vertically descends along the feed pipe 6 of the sun shaft into the four-way elbow 19 of the multi-directional guiding component. Then, it continues to enter the feed channels 28 of the spiral conveying shafts 25 of the corresponding vertical spiral feeding mechanisms through the four-way elbow 19, and is continuously conveyed upward from the bottom under the action of the externally provided aerodynamic force. It then continues to enter the conveying cavity through the feed connection port 29, and is continuously conveyed upward under the action of the spiral conveying shaft 25 and the spiral conveying blades 26 to the upper middle part of the heating cavity. The entering crushed waste will directly scatter around and fall into the annular heating space for heating treatment. During heating, electric heating is combined with microwave heating to quickly heat the waste pavement asphalt concrete aggregates. The temperature of the asphalt continuously rises and finally vaporizes. The vaporized asphalt continuously flows upward, and is conveyed outward in cooperation with the traction force of the external drainage fan. The vaporized asphalt first enters the drainage pipe 7 through the drainage channel 27, and then continues to be pulled upward, thereby separating the asphalt from the crushed waste.

[0078] The remaining concrete continuously flows downward under the action of the respective solid material pipes 31 provided at the bottoms of the respective external heating cylinders 21, and finally accumulates inside the conical aggregate part 17 at the lower part of the storage cavity 2. When it is necessary to discharge outward, the valve at the bottom discharge port 33 and the vibration motors 18 on both side walls of the conical aggregate part 17 are started to achieve rapid discharging. The discharged concrete aggregates are quickly subjected to subsequent recycling treatment, thereby realizing the recycling of resources; in addition, the asphalt led upward and outward enters the downstream for purification and collection and then is recycled again.

[0079] When separating asphalt and concrete, the method of heating and vaporizing asphalt at high temperature is adopted, which can better achieve the separation effect of asphalt and concrete and greatly reduce the amount of impurities doped in the asphalt.

[0080] In addition, in this device, when heating the asphalt at high temperature, the crushed waste is placed inside the annular heating space, and then the external heating cylinder 21 drives the revolution and rotation of the entire asphalt homogenizing separator 3 to improve the uniformity of the heat received by the mixed crushed waste during high-temperature heating, ensuring the full vaporization of the asphalt and reducing the residue of the asphalt.

[0081] The external heating cylinder 21 drives the revolution and rotation of the asphalt homogenizing separator 3, so that the crushed waste in the annular heating space is evenly heated during the movement process, promoting the full vaporization of the asphalt.

[0082] The revolution and rotation movements of the external heating cylinder 21 can generate a certain centrifugal force, and the waste moves towards the edge of the annular heating space under the action of the centrifugal force and adheres to the inner wall of the high-temperature heating cavity, effectively improving the asphalt heating effect and facilitating subsequent separation and cleaning.

[0083] During the heating process, the annular heating space can externally heat the inner wall of the outer heating cylinder 21 and the outer wall of the vertical spiral feeding mechanism (control the inner heating cylinder 24 of the vertical spiral feeding mechanism to be energized and heated up as needed and connect the corresponding microwave generator 30), fully expanding the contact area with the crushed waste, thereby effectively ensuring the even heating of the crushed waste during heating and improving the heating efficiency.

[0084] The heating contact area is adjustable (by controlling the alternating or simultaneous energization of the outer heating cylinder 21 and the inner heating cylinder 24, the heating area can be changed). When dealing with some temperature-sensitive asphalt waste, the heating method can be flexibly adjusted. When dealing with asphalt waste prone to overheating reactions, the heating of the inner heating cylinder 24 can be reduced, and only rely on the outer heating cylinder 21 and microwave heating to avoid damage to the waste due to overheating, and it can have the ability to handle special asphalt waste.

[0085] It should also be noted that during the heating process, there is relative rotation between the outer heating cylinder 21 and the outer wall of the inner heating cylinder 24 of the vertical spiral feeding mechanism. Therefore, it can better realize the rubbing of the crushed waste filled in the annular heating space; during the rotation of the outer heating cylinder 21, several feeding blocks 32 fixed on its inner side wall can continuously feed the internal crushed waste, thereby realizing the tumbling and mixing of the materials.

[0086] Density detection sensors are arranged on each of the feeding blocks 32. This material stirring method can be used to detect the uniformity of the density of the waste depending on the density detection sensors, and can infer the compositional differences of the crushed waste to judge whether the asphalt is cleaned up to standard.

[0087] From the two aspects of heating contact and material mixing, the heating process is optimized to ensure the efficient separation of asphalt and concrete.

[0088] By adjusting the relative rotation speed of the outer heating cylinder 21 and the inner heating cylinder 24 and the action frequency of the feeding blocks 32, effective treatment can be carried out for waste with different viscosities and particle sizes.

[0089] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention; for those skilled in the art of this technology, any alternative improvement or transformation made to the embodiments of the present invention falls within the protection scope of the present invention.

[0090] Where the present invention is not described in detail, it is all well-known technology to those skilled in the art of this technology.

Claims

1. A road asphalt waste recycling and recycling device, comprising a fixed outer cylinder, characterized in that: A storage chamber is provided inside the outer cylinder, and a plurality of asphalt homogenizing separators are distributed in a circular array inside the storage chamber. The bottom of each asphalt homogenizing separator is fitted and inserted into a corresponding rotating hole of a follower disk, and a multi-directional feeding assembly is rotatably installed at the center hole of the follower disk. The multi-directional feeding assembly is used to receive the crushed waste pneumatically conveyed from upstream and pneumatically feed the waste to the bottom of each asphalt homogenizing separator. A differential planetary drive mechanism is installed on the top of the storage chamber, and the differential planetary drive mechanism is meshed with an external driving gear. The asphalt discharge end of each asphalt homogenizing separator is coaxially arranged with each crushed waste feed end of the multi-directional feeding assembly, and the asphalt discharge end is connected to an external drainage fan.

2. The device for recycling and reusing waste asphalt road surface materials according to claim 1, characterized in that: The multi-directional feeding assembly comprises a vertically arranged sun shaft feeding pipe, and a multi-directional flow guiding component is installed at the bottom of the sun shaft feeding pipe.

3. The device for recycling and reusing waste asphalt road surface materials according to claim 2, characterized in that: A drainage pipe is installed at the discharge end of each of the asphalt homogenizing separators, and the upper end of each of the drainage pipes can be movably extended to the top of a fixed plate. The fixed plate is fixedly arranged, and the top of the sun shaft feed pipe can be movably extended to the top of the upper tray through the center of the upper tray. The lower end of each of the drainage pipes can be extended to the interior of the corresponding asphalt homogenizing separator, and the top of each of the drainage pipes is used in conjunction with an external drainage fan.

4. The device for recycling and reusing waste asphalt road surface materials according to claim 3, characterized in that: The flanges on the upper outer walls of each drainage tube and the sun shaft feed tube are supported in the corresponding support bearing seat on the top of the fixed plate to ensure that each drainage tube and the sun shaft feed tube can withstand gravity in the vertical direction.

5. The device for recycling and reusing waste road asphalt according to claim 4, characterized in that: The differential planetary drive mechanism includes a driven gear interactively abutting against the top of the storage chamber, and a first-stage planetary transmission is installed on the inner side of the driven gear, and the first-stage planetary transmission includes an inner gear ring fixed on the inner ring side wall of the driven gear, and a first-stage sun gear is fixed on the upper outer wall of the sun shaft feed tube, and a plurality of first-stage planetary gears are evenly spaced outside the first-stage sun gear, and each of the first-stage planetary gears is coaxially fixed on the outer side wall of its corresponding drainage tube, and the inner side of each first-stage planetary gear is meshed with the first-stage sun gear and the outer side is meshed with the inner gear ring, and a second-stage planetary transmission is installed on the outer side wall of the sun shaft feed tube above the first-stage sun gear, and the second-stage planetary transmission is used as a planetary carrier of the first-stage planetary transmission.

6. The device for recycling and reusing waste road asphalt according to claim 5, characterized in that: The secondary planetary transmission is used to drive the vertical screw feeding mechanism inside the asphalt homogeneous mixing separator to operate and complete the feeding into the interior thereof.

7. The device for recycling and reusing waste road asphalt according to claim 6, characterized in that: The secondary planetary transmission includes a planetary carrier movably sleeved on the outer wall of the sun shaft feed pipe, each rotating hole of the planetary carrier is sleeved on the outer wall of the drainage pipe respectively, a secondary sun gear is fixedly installed on the top of the planetary carrier, and secondary planetary gears are coaxially fixedly connected on the outer walls of the drainage pipe around the secondary sun gear. The secondary planetary gear drives the vertical spiral feeding mechanism inside the asphalt homogenizing separator to operate, and a secondary gear ring is coaxially arranged on the periphery of the secondary sun gear. The top of the secondary gear ring is fixedly arranged, and the secondary gear ring is meshed with each of the secondary planetary gears.

8. The device for recycling and reusing waste road asphalt according to claim 7, characterized in that: The asphalt homogenizing separator distributes the crushed waste entering the asphalt into a ring shape and gasifies the asphalt under the action of electric heating and microwave heating, and then the gasified asphalt is separated and drawn out by the induced draft fan.

9. The device for recycling and reusing waste road asphalt according to claim 8, characterized in that: The bottom of the outer cylinder is configured as a conical aggregate portion, and the conical aggregate portion is used to accumulate concrete materials to be discharged. Vibration motors are fixedly mounted on the outer side walls on both sides of the conical aggregate portion.

10. The device for recycling and reusing waste asphalt road surface materials according to claim 9, characterized in that: The multi-directional flow-guiding component includes a four-way elbow, the feed end at the top center of the four-way elbow is fixed to the central bottom of the follower plate, an inner support ring for supporting the bottom of the sun shaft feed pipe is installed inside the pipe mouth of the feed end of the four-way elbow, and each output end of the four-way elbow is vertically upward and extends to the interior of the corresponding vertical spiral feeding mechanism.

Images