A layered extraction recovery device for evaluating the permeability of a regenerant for a regeneration technique

Abstract

The application discloses a layered extraction recovery device for evaluating the permeability of a regenerating agent for a regeneration technology, which comprises a box, a lifting control module, a rotation control module and a heating control module; a box door is arranged on the front face of the box and a digital display control module is embedded in the box door; the digital display control module comprises a power button, a start button, an emergency stop / reset button and a temperature setting button; an electricity connection port is arranged on the back face of the box; the lifting control module is arranged on the lower surface of the top of the box and is connected with the power button, the start button and the emergency stop / reset button respectively; the rotation control module is arranged on the upper surface of the bottom of the box and is connected with the power button, the start button and the emergency stop / reset button respectively; the heating control module is arranged in the box and is connected with the temperature setting button; and temperature measuring holes and flow guiding holes are arranged on the side face of the box. The application simplifies the operation process, accurately controls the same time of each dissolution and improves the safety of solvent evaporation recovery.

Description

Technical Field

[0001] This invention belongs to the technical field of asphalt recycling equipment, specifically relating to a stratified extraction and recycling device for evaluating the permeability of regenerating agents used in recycling technology. Background Technology

[0002] In road design specifications, the design service life of asphalt pavement is 15 years. However, in actual use, with the explosive growth in the number of vehicles and the increase in heavy traffic in my country, asphalt pavement needs maintenance every 3-5 years and major repairs every 8-10 years. Asphalt pavement requiring major repairs no longer meets the overall performance requirements, but it still has high utilization value as a road material. Directly discarding old asphalt mixtures not only causes enormous damage to the ecological environment but also represents a huge waste of resources. Recycling and reusing the large amount of asphalt pavement material generated during construction can restore it to meet road performance requirements, saving significant material resources and funds, avoiding environmental pollution, and achieving a circular economy development model and sustainable development.

[0003] These waste asphalt mixtures cannot be used directly; they need to be mixed with new asphalt, recycling agents, and aggregates before paving and compaction. New asphalt and aggregates are used to adjust the gradation of the recycled asphalt mixture and compensate for asphalt loss during pavement use, thus achieving optimal performance. Recycling agents play a crucial role in restoring the properties of old asphalt and are essential in the use of recycled asphalt mixtures. Currently, there are many methods to evaluate the restoration of old asphalt's road performance using recycling agents; however, the penetration performance of recycling agents in old asphalt is difficult to evaluate, making it difficult to judge the actual road performance of recycling agents. Based on this, this study invented a stratified extraction and recovery device for evaluating the permeability of recycling agents in recycling technology.

[0004] In the process of recovering asphalt from the aggregate surface and evaluating the permeability of the recycling agent, trichloroethylene is required as a solvent to dissolve the asphalt on the same aggregate surface multiple times within the same time period. If this process is performed manually, it is complex and difficult to precisely control the dissolution time for each step. Furthermore, the small amount of trichloroethylene solvent containing asphalt is difficult to recover in a rotary evaporator, and the lack of a condensation recovery device in the oven makes direct evaporation in the oven dangerous. Summary of the Invention

[0005] Technical problem solved: In view of the above-mentioned technical problems, the present invention provides a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology, which can effectively solve the shortcomings of the above-mentioned manual operation process, such as complexity, difficulty in accurately controlling the same dissolution time each time, and the danger of solvent evaporation and recovery.

[0006] Technical Solution: A stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology, comprising a housing, a lifting control module, a rotation control module, and a heating control module; the housing has a door on the front and a digital display control module embedded therein, the digital display control module including a power button, a start button, an emergency stop / reset button, and a temperature setting button; the housing has a power inlet on the back; the lifting control module is located on the lower top surface of the housing and is connected to the power button, start button, and emergency stop / reset button respectively; the rotation control module is located on the upper bottom surface of the housing and is connected to the power button, start button, and emergency stop / reset button respectively; the heating control module is located inside the housing and is connected to the temperature setting button; the housing has a temperature measuring hole / flow guide hole on the side.

[0007] Preferably, the rotation control module includes a platform, a rotation control motor, and a connecting rod. The rotation control motor is located at the bottom of the housing and is connected to the power button, start button, and emergency stop / reset button. A connecting hole is provided in the center of the platform. One end of the connecting rod is connected to the connecting hole, and the other end is connected to the rotation control motor.

[0008] Furthermore, a limiting hole is provided on the stage, and a solvent bottle is provided inside the limiting hole.

[0009] Furthermore, it also includes an evaporation cap and a flow guide tube. The evaporation cap matches the mouth of the solvent bottle and has a through hole in the center. One end of the flow guide tube is connected to the through hole, and the other end passes through the temperature measuring hole / flow guide hole and is connected to an external collection device.

[0010] Preferably, the lifting control module includes a module housing, a lifting control motor, an outer lifting rail, an inner lifting rail, a lifting rod, a hook, and pulleys. One end of the module housing is located on the lower surface of the top of the housing. The lifting control motor is located on the top of the module housing and is connected to a power button, a start button, and an emergency stop / reset button. The inner lifting rail and the outer lifting rail form a lifting track, with the inner lifting rail fitted inside the outer lifting rail. One end of the lifting track is connected to the module housing. The lifting rod is located between the outer and inner lifting rails and is connected to the inner lifting rail via pulleys. The pulleys are connected to the lifting control motor. One end of the lifting rod extends out of the module housing and is connected to the hook. The hook is connected to a small metal ball via a connector, and the small metal ball is coated with asphalt.

[0011] Furthermore, the lifting control module also includes a second motor protective shell, which is fitted over the lifting control motor.

[0012] Furthermore, a sealing ring is provided between the lifting rod and the module housing.

[0013] Furthermore, the diameter of the metal sphere is 15 mm.

[0014] Preferably, the box body and the box door are connected by a locking device, the plates of the box body are provided with heat insulation material, the bottom surface of the box body is provided with a support, and the back of the box body is provided with a back plate.

[0015] Furthermore, the thermal insulation material is asbestos or rock wool.

[0016] Beneficial effects: 1. The layered extraction and recovery device for evaluating the permeability of regenerating agents in the present invention can accurately dissolve the asphalt on the outside of the metal ball into the solvent in layers, while simultaneously evaporating the solvent. Asphalt at different layers can be obtained directly without direct contact with the solvent, which is safe, convenient and fast.

[0017] 2. Different recycling agents are coated onto small balls containing aged asphalt to obtain recycled asphalt at different layers outside the metal balls. The recycled asphalt at different layers is subjected to FTIR testing. The change in the peak area of ​​the tracer as it penetrates deeper into the layer is observed from the infrared absorption peak. The layer data is fitted to obtain the penetrant concentration decay equation, which can be used to quickly evaluate the penetrant permeability. Attached Figure Description

[0018] Figure 1 This is a front view of a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to the present invention;

[0019] Figure 2 This is a schematic diagram of the back of a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to the present invention;

[0020] Figure 3 This is a schematic diagram of the internal structure of a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to the present invention;

[0021] Figure 4 This is a schematic diagram of the rotary control module structure of a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to the present invention;

[0022] Figure 5 This is a schematic diagram of the lifting control module structure of a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to the present invention;

[0023] The components in the diagram are numbered as follows: 1. Locking element; 2. Digital display control module; 3. Power button; 4. Start button; 5. Emergency stop / reset button; 6. Temperature setting button; 7. Power port; 8. Back panel; 9. Temperature measuring hole / flow guide hole; 10. Lifting control module; 11. Platform; 12. Rotation control module; 13. Heating control module; 14. Connecting rod; 15. First motor protective shell; 16. Rotation control motor; 17. Connecting hole; 18. Limiting hole; 19. Solvent bottle; 20. Evaporation cap; 21. Flow guide tube; 22. Lifting control motor; 23. Second motor protective shell; 24. Module outer shell; 25. Lifting outer rail; 26. Lifting inner rail; 27. Lifting rod; 28. Hook; 29. ​​Pulley; 30. Sealing ring; 31. Connecting element; 32. Metal ball. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments:

[0025] Example 1

[0026] like Figures 1-3 As shown, a stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology includes a housing, a lifting control module 10, a rotation control module 12, and a heating control module 13. The housing has a door on its front and a digital display control module 2 is embedded therein. The digital display control module 2 includes a power button 3, a start button 4, an emergency stop / reset button 5, and a temperature setting button 6. A power inlet 7 is located on the back of the housing. The lifting control module 10 is located on the lower top surface of the housing and is connected to the power button 3, start button 4, and emergency stop / reset button 5, respectively. The rotation control module 12 is located on the bottom upper surface of the housing and is connected to the power button 3, start button 4 and emergency stop / reset button 5 respectively. The heating control module 13 is composed of heating resistors connected in parallel, with a temperature range of 25℃-260℃ and a power limit of 3000W. It is equipped with an electronic thermometer to provide feedback on temperature changes and to the heating control module 13 for adjusting the heating power. The heating control module 13 is located inside the housing and is connected to the temperature setting button 6. The side of the housing has a temperature measuring hole / flow guide hole 9.

[0027] like Figure 4As shown, the rotation control module 12 includes a platform 11, a rotation control motor 16, and a connecting rod 14. The rotation control motor 16 is located at the bottom of the housing and is connected to the power button 3, the start button 4, and the emergency stop / reset button 5. A connecting hole 17 is provided in the center of the platform 11. One end of the connecting rod 14 is connected to the connecting hole 17, and the other end is connected to the rotation control motor 16. The platform 11 also has six limiting holes 18, and a solvent bottle 19 is placed inside each limiting hole 18. It also includes an evaporation cap 20 and a guide tube 21. The evaporation cap 20 matches the mouth of the solvent bottle 19 and has a through hole in its center. One end of the guide tube 21 is connected to the through hole, and the other end passes through the temperature measuring hole / guide hole 9 and is connected to an external condensation recovery device.

[0028] like Figure 5 As shown, the lifting control module 10 includes a module housing 24, a lifting control motor 22, an outer lifting rail 25, an inner lifting rail 26, a lifting rod 27, a hook 28, and a pulley 29. One end of the module housing 24 is located on the lower surface of the top of the housing. The lifting control motor 22 is located on the top of the module housing 24 and is connected to the power button 3, the start button 4, and the emergency stop / reset button 5, respectively. The inner lifting rail 26 and the outer lifting rail 25 form a lifting track, and the inner lifting rail 26 is fitted inside the outer lifting rail 25. One end of the lifting track is connected to the module housing 24. The lifting rod 27 is located between the outer lifting rail 25 and the inner lifting rail 26 and is connected to the inner lifting rail 26 by sliding. A pulley 29 is connected to a lifting control motor 22. The lifting control motor 22 drives the pulley 29 to rotate forward / reverse, thus raising / lowering the lifting rod 27. One end of the lifting rod 27 extends out of the module housing 24 and is connected to a hook 28. The hook 28 is connected to a metal ball 32 via a connector 31 (fine metal wire). The metal ball 32 is coated with asphalt. The manufacturing method is as follows: while the old asphalt is in a flowing state, the metal ball 32 is evenly dipped into the asphalt and allowed to cool and solidify naturally. It is then coated with a regenerating agent mixed with a tracer and left to stand at room temperature for 12 hours to allow it to naturally penetrate into the asphalt layer. The residual regenerating agent on the surface is removed, and the ball is placed on the hook 28 for layered extraction. The diameter of the metal ball 32 is 15mm. The lifting control motor 22 is covered with a second motor protective shell 23, and a sealing ring 30 is provided between the lifting rod 27 and the module housing 24.

[0029] The box body and the box door are connected by a locking component 1, which facilitates the opening or closing of the box door; the plates of the box body are provided with asbestos for insulation; the bottom surface of the box body is provided with 4 supports; the back of the box body is provided with a back plate 8 for easy maintenance.

[0030] Example 2

[0031] The process of conducting the experiment using the stratified extraction and recovery device of Example 1 is as follows: First, the metal balls 32 wrapped with asphalt are suspended on the hook 28. 30 mL of solvent is poured into the solvent bottle 19 and placed into the 6 limiting holes 18 in sequence. The door is closed, the power port 7 is connected, the main power supply 3 is turned on, the emergency stop / reset button 5 is pressed, the digital display control module 2 is observed, and the start button 4 is pressed after positioning. The system starts to run the pre-set test operation procedure, that is, the metal balls 32 wrapped with old asphalt that have been soaked in the recycling agent are dropped into each solvent bottle 19 in sequence for stratified dissolution. The specific process is as follows: the lifting control module 10 first descends, rises after an interval of 3-10 seconds, and repeats the above operation after an interval of 8-20 seconds. The operation is repeated 5 times and then ends. Then, the rotation control module 12 rotates once every 5-15 seconds and ends after 5 rotations. After the experiment, open the chamber door, remove the metal ball 32, place the evaporation cap 20 on the solvent bottle 19 and secure it. Connect the conduit through the temperature measuring hole / flow guide hole 9 to the external condensation recovery device. Close the chamber door, turn on the heating control module 13, and adjust the temperature using the temperature setting button 6, ideally to 100℃. After a period of time, open the chamber door to check if the solvent bottle has completely evaporated. If it has, turn off the main power supply 3 and remove the solvent bottle 19, thus obtaining the layered extracted asphalt sample. FTIR tests were performed on the extracted recycled asphalt from different layers. The peak area of ​​the tracer gradually decreased with increasing depth in the infrared spectrum. The layer data was fitted to obtain the penetrant concentration decay equation, thereby evaluating the permeability of the recycled asphalt.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology, characterized in that: The enclosure includes a housing, a lifting control module (10), a rotation control module (12), and a heating control module (13). The housing has a door on the front and a digital display control module (2) is embedded therein. The digital display control module (2) includes a power button (3), a start button (4), an emergency stop / reset button (5), and a temperature setting button (6). The back of the housing has a power inlet (7). The lifting control module (10) is located on the lower top surface of the housing and is connected to the power button (3), the start button (4), and the emergency stop / reset button (5) respectively. The rotation control module (12) is located on the upper bottom surface of the housing and is connected to the power button (3), the start button (4), and the emergency stop / reset button (5) respectively. The heating control module (13) is located inside the housing and is connected to the temperature setting button (6). The side of the housing has a temperature measuring hole / flow guide hole (9). The lifting control module (10) includes a module housing (24), a lifting control motor (22), an outer lifting rail (25), an inner lifting rail (26), a lifting rod (27), a hook (28), and a pulley (29). One end of the module housing (24) is located on the lower surface of the top of the housing. The lifting control motor (22) is located on the top of the module housing (24) and is connected to the power button (3), the start button (4), and the emergency stop / reset button (5), respectively. The inner lifting rail (26) and the outer lifting rail (25) form a lifting track, and the inner lifting rail (27)... 26) The lifting rod (27) is installed inside the lifting outer rail (25). One end of the lifting rail is connected to the module shell (24). The lifting rod (27) is set between the lifting outer rail (25) and the lifting inner rail (26), and is connected to the lifting inner rail (26) through a pulley (29). The pulley (29) is connected to the lifting control motor (22). One end of the lifting rod (27) extends out of the module shell (24) and is connected to a hook (28). The hook (28) is connected to a metal ball (32) through a connector (31). The metal ball (32) is wrapped with asphalt. The rotation control module (12) includes a stage (11), a rotation control motor (16), and a connecting rod (14). The rotation control motor (16) is located at the bottom of the housing and is connected to the power button (3), the start button (4), and the emergency stop / reset button (5). A connecting hole (17) is provided in the center of the stage (11). One end of the connecting rod (14) is connected to the connecting hole (17), and the other end is connected to the rotation control motor (16). A limiting hole (18) is also provided on the stage (11), and a solvent bottle (19) is provided in the limiting hole (18). It also includes an evaporation cap (20) and a flow guide tube (21). The evaporation cap (20) matches the mouth of the solvent bottle (19) and has a through hole in the center. One end of the flow guide tube (21) is connected to the through hole, and the other end passes through the temperature measuring hole / flow guide hole (9) and is connected to an external collection device.

2. The stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to claim 1, characterized in that: The lifting control module (10) also includes a second motor protective shell (23), which is fitted over the lifting control motor (22).

3. A stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to claim 1, characterized in that: A sealing ring (30) is provided between the lifting rod (27) and the module housing (24).

4. A stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to claim 1, characterized in that: The diameter of the metal sphere (32) is 15 mm.

5. A stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to claim 1, characterized in that: The box body and the box door are connected by a locking member (1), the plates of the box body are provided with heat insulation material, the bottom surface of the box body is provided with a support, and the back of the box body is provided with a back plate (8).

6. A stratified extraction and recovery device for evaluating the permeability of regenerants in regeneration technology according to claim 5, characterized in that: The thermal insulation material is asbestos or rock wool.

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