Recycling and regenerating device for old asphalt mixture

Abstract

The invention discloses an old asphalt mixture recycling and regenerating device, and relates to the technical field of asphalt regeneration, the old asphalt mixture recycling and regenerating device comprises a fixing frame, the top of the fixing frame is provided with a crushing bin, the inner side of the crushing bin is provided with a crushing roller, the top of the crushing bin is provided with a feeding channel, and the bottom of the crushing bin is provided with a vibrating screen classifier shell; a positive pressure pneumatic conveying device is installed at a discharging port of the vibrating screening machine shell, a recovery furnace is arranged on one side of the fixing frame, and a conveying pipeline is installed between the output end of the positive pressure pneumatic conveying device and a feeding port of the recovery furnace. By arranging the temperature control assembly, after preheating, asphalt has a certain temperature basis when entering the recovery furnace, so that thermal shock is reduced, the heating time required by heating from 60 DEG C and then entering the recovery furnace for heating and melting is greatly shortened compared with normal temperature, and the overall processing efficiency of the equipment is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of asphalt regeneration, in particular to a device for recycling old asphalt mixture. Background Art

[0002] Asphalt pavement is the main type of high-grade highway in my country, as it is comfortable to drive on and easy to maintain and repair. Highway construction has already entered a period of large-scale maintenance and repair. Therefore, most of the highways built in the early days have reached the end of their service life. At the same time, due to the sharp increase in traffic volume, asphalt pavement has developed rutting, cracks and other defects before the end of its service life. At this stage, the maintenance method of asphalt pavement mainly focuses on digging and milling the original pavement and then paving new asphalt mixture. This will cause a considerable amount of asphalt mixture to be discarded, causing serious pollution to the environment and also resulting in a waste of resources. Therefore, how to effectively and efficiently utilize waste asphalt mixture, turning it into treasure and returning it to the road to serve traffic, at this time, it is necessary to use asphalt mixture recycling and regeneration equipment to recycle the old asphalt.

[0003] In the existing asphalt mixture recycling and regeneration process, the old asphalt mixture obtained by milling or excavation is sequentially crushed and screened to remove impurities and oversized particles. The waste asphalt mixture separated in the screening process is directly fed into the recycling furnace for heating treatment. Since the initial temperature of the asphalt is at room temperature, the recycling furnace needs to heat it intensively in a short period of time to quickly heat the asphalt to a high-temperature working state. This rapid heating process from room temperature to high temperature not only significantly increases the energy consumption required for heating, significantly prolongs the overall heating time, and reduces the recycling efficiency of the waste asphalt mixture, but may also adversely affect the chemical structure and physical properties of the asphalt due to the rapid temperature change, resulting in secondary aging of the old asphalt performance, which in turn affects the quality stability and ultimate road performance of the recycled mixture, making it difficult to meet the high-quality requirements of road paving. To this end, we provide a waste asphalt mixture recycling and regeneration device to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a waste asphalt mixture recycling and regeneration device to solve the problem that in the operation of the existing waste asphalt mixture recycling and regeneration device, due to its low initial temperature, the recovery furnace needs to be heated with high intensity and in a short time to quickly heat it to the working state, which not only greatly increases the energy consumption required for heating, but also greatly prolongs the heating time, thereby greatly reducing the overall processing efficiency of the equipment.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for recycling and regenerating old asphalt mixture, comprising: a fixed frame, a crushing chamber installed on the top of the fixed frame, a crushing roller installed on the inner side of the crushing chamber, a feeding channel installed on the top of the crushing chamber, a vibrating screening machine shell installed on the bottom of the crushing chamber, a positive pressure pneumatic conveying device installed at the discharge port of the vibrating screening machine shell, a recovery furnace provided on one side of the fixed frame, a conveying pipe installed between the output end of the positive pressure pneumatic conveying device and the feed port of the recovery furnace, the vibrating A temperature control component, a reciprocating shearing unit and an auxiliary crushing mechanism are respectively provided on the inner side of the screening machine shell. The temperature control component includes: hot air blowers respectively installed on the outer wall of the crushing bin and the vibrating screening machine shell, and connecting pipes are respectively installed between the air outlet end of the hot air blower and the air inlet of the crushing bin and the vibrating screening machine shell. The first hot air blower is used to introduce 30-degree hot air into the crushing bin to preheat the recovered old asphalt mixture, and the second hot air blower is used to introduce 60-degree hot air into the vibrating screening machine shell to preheat the recovered old asphalt mixture again.

[0006] As a further solution of the present invention: a first motor is fixedly connected to one side of the vibration screening machine housing, the execution end of the first motor passes through the interior of the vibration screening machine housing and is fixedly connected to a roller, and the outer wall of the roller is fixedly connected to multiple loading plates.

[0007] As a further solution of the present invention: the reciprocating shearing unit includes a third sieve plate fixedly connected to the inner side of the vibrating screening machine shell, a plurality of top discharge sleeves are fixedly connected to the inner side of the discharge port of the third sieve plate, a second sieve plate is arranged below the third sieve plate, a plurality of bottom discharge sleeves are fixedly connected to the top of the second sieve plate, and the number of the bottom discharge sleeves matches the top discharge sleeve, the outer diameter of the bottom discharge sleeve matches the inner diameter of the top discharge sleeve, and the top discharge sleeve is sleeved on the outer wall of the bottom discharge sleeve, a first sieve plate is arranged at the bottom of the second sieve plate, and the screening aperture of the first sieve plate matches the aperture of the top discharge sleeve.

[0008] As a further solution of the present invention: the reciprocating shearing unit also includes a movable frame respectively arranged on both sides of the vibrating screening machine shell, the inner bottom of the movable frame is fixedly connected to the second fixed seat, the top of the second fixed seat is rotatably connected to the large bevel gear, the inner side of the movable frame is rotatably connected to the second shaft rod, one end of the second shaft rod is fixedly connected to the small bevel gear meshing with the large bevel gear, one side of the movable frame is fixedly connected to a protective plate, and the two sides of the second screen plate are respectively fixedly connected to one of the protective plates, the other end of the second shaft rod passes through the outside of the protective plate and is fixedly connected to a rotating circular plate, one side of the rotating circular plate is fixedly connected to a sleeve shaft, a sleeve rod is provided on one side of the rotating circular plate, and the sleeve rod is sleeved on the outer wall of the sleeve shaft, one side of the sleeve shaft is fixedly connected to a connecting shaft rod, one end of the connecting shaft rod is fixedly connected to a fixed block, the top of the fixed block is fixedly connected to the bottom of the first screen plate, and a driving component that drives the large bevel gear to rotate is provided on the inner side of the movable frame.

[0009] As a further solution of the present invention: the protective plate is slidably connected to the vibration screening machine housing through an auxiliary slide groove, and a second trapezoidal slide rail is fixedly connected to one side of the protective plate, a trapezoidal slide groove matching the second trapezoidal slide rail is opened on the inner side of the first screen plate, and the first screen plate is slidably connected to the outer side of the second trapezoidal slide rail through the trapezoidal slide groove opened on the inner side.

[0010] As a further solution of the present invention: the driving assembly includes two groups of first fixed seats respectively fixedly connected to both sides of the vibration screening machine housing, each group of first fixed seats is provided with two, and one side of a group of first fixed seats located on the same side is fixedly connected to a second motor, the execution end of the second motor passes through the outside of the first fixed seat and is fixedly connected to a second reciprocating screw, one end of the second reciprocating screw is fixedly connected to the first reciprocating screw through a cylindrical connecting rod, and one end of the first reciprocating screw is rotatably connected to the first fixed seat, and the inner side of another first fixed seat is rotatably connected to a limiting slide rod, the outer walls of the first reciprocating screw rod and the second reciprocating screw rod are threadedly connected to the movable frame, and a second slide groove matching the limiting slide rod is opened on the inner side of the movable frame, and the movable frame is slidably connected to the limiting slide rod through the second slide groove.

[0011] As a further solution of the present invention: the outer wall of the cylindrical connecting rod is fixedly connected to two first trapezoidal slide rails, and the interior of the large bevel gear is provided with a first slide groove matching the first trapezoidal slide rails, and the large bevel gear is slidably connected to the outer wall of the first trapezoidal slide rail through the first slide groove.

[0012] As a further solution of the present invention: the auxiliary crushing mechanism includes a plurality of third fixed seats that are fixedly connected to the inner side of each of the bottom discharge sleeves, the inner side of each of the third fixed seats is rotatably connected to a shear plate through a first shaft rod, one side of each of the third fixed seats is fixedly connected to a protective frame, one end of the first shaft rod passes through the outside of the third fixed seat and is fixedly connected to the first spur gear, the interior of each of the bottom discharge sleeves is provided with a through groove matching the first spur gear, and one side of each of the first spur gears is meshed with a spur rack, the multiple spur racks are fixedly connected by a linking ring, and the inner side of the bottom discharge sleeve is provided with a third slide groove matching the linking ring, and the linking ring is slidably connected to the bottom discharge sleeve through the third slide groove.

[0013] As a further solution of the present invention: the auxiliary crushing mechanism also includes an arc-shaped guide rod rotatably connected to the inside of the bottom discharge sleeve, one end of the arc-shaped guide rod is fixedly connected to an arc-shaped rack, the bottom of the arc-shaped rack and the bottom of the arc-shaped guide rod are fixedly connected to a limit plate, and a push rod is provided between the two limit plates, and one end of the push rod is fixedly connected to the top of the first screen plate, one side of the arc-shaped rack is meshed with a second spur gear, the top of the second spur gear is fixedly connected with a one-way screw rod, one end of the one-way screw rod passes through the outside of one of the spur racks and is threadedly connected to the spur rack, and the one-way screw rod is rotatably connected to the bottom discharge sleeve, and a fourth sliding groove matching the spur rack is provided on the inner side of the bottom discharge sleeve, and the spur rack is slidably connected to the bottom discharge sleeve through the fourth sliding groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up a temperature control component, before the asphalt enters the crushing chamber, two hot air blowers respectively input hot air into the crushing chamber and the vibration screening machine shell through connecting pipes, and keep the temperature inside the crushing chamber at 30 degrees and the temperature inside the screening frame at 60 degrees. The temperature of 30 degrees in the crushing chamber can make the aggregate relatively soft, while the temperature of 60 degrees inside the screening frame can further soften the asphalt, reduce the viscosity, and reduce the agglomeration phenomenon caused by asphalt bonding between particles, making the particle size distribution of each level more uniform. After preheating at 30 and 60 degrees, the asphalt has a certain temperature base when entering the recovery furnace, thereby reducing thermal shock. The time required to heat up from 60 degrees and then enter the recovery furnace for heating and melting is greatly reduced compared to room temperature, thereby greatly improving the overall processing efficiency of the equipment; 2. By coordinating the first screen plate and other components, the staggered movement of the first screen plate trough and the bottom discharge sleeve creates a shearing force similar to scissors, shearing the screened asphalt fragments. When the asphalt fragments pass through the trough, the horizontal reciprocating first screen plate will apply shear stress to the asphalt fragments that exceed the set particle size, causing them to further break up. Traditional screening only selects particles by sieve hole size, while the shearing action can forcibly break up asphalt fragments that are stuck together or exceed the particle size standard, making the final asphalt fragments more uniform and meeting the particle size requirements of recycled asphalt, thereby greatly improving the processing efficiency of the screening process and thus improving the overall processing efficiency of the equipment; 3. By setting up the coordination of the bottom discharge sleeve and other parts, the reciprocating movement of the bottom discharge sleeve in the top discharge sleeve is equivalent to a piston-type scraping action, which can remove the viscous asphalt lumps attached to the inner wall of the sleeve, and prevent the old asphalt from condensing on the inner wall of the sleeve due to temperature drop, resulting in poor discharge. In addition, the extrusion force exerted on the material during the expansion and contraction of the sleeve can break up the particle clusters formed by the adhesion of aging colloid, improve the fluidity of the material, thereby greatly improving the screening effect of the asphalt and improving the overall processing efficiency of the equipment; 4. By setting up an auxiliary mechanism, the shear plate is made of metal material and can be similar to a blade. When the first screen plate moves back and forth laterally at the bottom of the bottom unloading sleeve, the first screen plate drives multiple push rods to push the limit plate at the bottom of an arc-shaped rack to move back and forth laterally, thereby driving the arc-shaped rack to drive the second spur gear to rotate back and forth, and then drives the one-way screw to drive the spur rack to rotate up and down. At this time, the spur rack drives the first spur gear to rotate back and forth, and drives the multiple shear plates inside the bottom unloading sleeve to swing back and forth, so that the end of the shear plate can shear the asphalt, so that the large pieces of asphalt mixture that have not passed through the sieve hole during the screening process are sheared under the action of the shear plate, so as to avoid agglomeration inside the unloading sleeve and cause docking blockage, thereby ensuring the stability of subsequent unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an overall side sectional view of the present invention; Figure 3 Schematic diagram of the internal structure of the vibration screening machine housing of the present invention; Figure 4 It is a schematic diagram of the structure between the vibration screening machine housing and the vibration screening machine housing of the present invention; Figure 5 It is a schematic diagram of the structure between the third sieve plate and the first sieve plate of the present invention; Figure 6 This is a schematic diagram of the structure between the third screen plate and the top unloading sleeve of the present invention; Figure 7This is a schematic diagram of the internal structure of the bottom blanking sleeve of the present invention; Figure 8 It is a schematic diagram of the structure between the bottom blanking sleeve and the arc-shaped rack of the present invention.

[0016] In the figure: 1. fixed frame; 2. crushing chamber; 3. feeding channel; 4. hot air blower; 5. vibrating screen housing; 6. first shaft; 7. moving frame; 8. positive pressure pneumatic conveying device; 9. conveying pipe; 10. recovery furnace; 11. first motor; 12. rotating roller; 13. loading plate; 14. first fixed seat; 15. first reciprocating screw; 16. cylindrical connecting rod; 17. second reciprocating screw; 18. limiting slide; 19. second fixed seat; 20. large bevel gear; 21. first trapezoidal slide rail; 22. first screen plate; 23. bottom discharge sleeve; 24. second screen plate; 25. top discharge sleeve; 2 6. Third sieve plate; 27. Rotating circular plate; 28. Sleeve rod; 29. Second shaft rod; 30. Second motor; 31. Small bevel gear; 32. Second trapezoidal slide rail; 33. Trapezoidal slide chute; 34. Sleeve shaft; 35. Connecting shaft rod; 36. Fixed block; 37. Protective plate; 38. Auxiliary slide chute; 39. Protective frame; 40. Shear plate; 41. Straight rack; 42. Linking ring; 43. First straight gear; 44. One-way screw; 45. Arc rack; 46. Second straight gear; 47. Crushing roller; 48. Arc guide rod; 49. Limiting plate; 50. Push rod; 51. Connecting pipe; 52. Third fixed seat. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0019] See also Figures 1 to 8 The present embodiment provides a waste asphalt mixture recycling and regeneration device, comprising: a fixed frame 1, a crushing chamber 2 is installed on the top of the fixed frame 1, a crushing roller 47 is installed on the inner side of the crushing chamber 2, a feeding channel 3 is installed on the top of the crushing chamber 2, a vibrating screening machine housing 5 is installed on the bottom of the crushing chamber 2, a positive pressure pneumatic conveying device 8 is installed at the discharge port of the vibrating screening machine housing 5, a recovery furnace 10 is provided on one side of the fixed frame 1, a conveying pipe 9 is installed between the output end of the positive pressure pneumatic conveying device 8 and the feed port of the recovery furnace 10, and the vibrating screening machine housing 5 is installed at the discharge port of the vibrating screening machine housing 5. A temperature control component, a reciprocating shearing unit, and an auxiliary crushing mechanism are respectively provided on the inside. The temperature control component includes: a hot air blower 4 installed on the outer wall of the crushing chamber 2 and the vibrating screening machine housing 5, respectively. A connecting pipe 51 is installed between the air outlet end of the hot air blower 4 and the air inlet of the crushing chamber 2 and the vibrating screening machine housing 5, respectively. The first hot air blower 4 introduces 30-degree hot air into the crushing chamber 2 to preheat the recycled old asphalt mixture, and the second hot air blower 4 introduces 60-degree hot air into the vibrating screening machine housing 5 to preheat the recycled old asphalt mixture again. Before the asphalt enters the crushing bin 2, the two hot air blowers 4 input hot air into the crushing bin 2 and the vibrating screening machine shell 5 respectively through the connecting pipe 51, and keep the temperature inside the crushing bin 2 at 30 degrees, and the temperature inside the screening frame at 60 degrees. The temperature of 30 degrees in the crushing bin 3 can make the aggregate relatively soft, and the temperature of 60 degrees inside the screening frame can further soften the asphalt, reduce the viscosity, reduce the agglomeration phenomenon caused by the adhesion of asphalt between particles, and make the particle size distribution of particles at all levels more uniform. After preheating at 30 degrees and 60 degrees, the asphalt has a certain temperature basis when entering the recovery furnace, thereby reducing thermal shock. The time required for heating and melting after heating from 60 degrees to entering the recovery furnace 10 is greatly reduced compared with normal temperature, thereby greatly improving the overall processing efficiency of the equipment.

[0020] See also Figures 1 to 8A first motor 11 is fixedly connected to one side of the vibrating screening machine housing 5, and the execution end of the first motor 11 passes through the interior of the vibrating screening machine housing 5 and is fixedly connected to a roller 12. The outer wall of the roller 12 is fixedly connected to a plurality of loading plates 13. The reciprocating shearing unit includes a third sieve plate 26 fixedly connected to the inner side of the vibrating screening machine housing 5, and a plurality of top unloading sleeves 25 are fixedly connected to the inner side of the unloading port of the third sieve plate 26. A second sieve plate 24 is provided below the third sieve plate 26, and a plurality of bottom unloading sleeves 23 are fixedly connected to the top of the second sieve plate 24, and the number of the bottom unloading sleeves 23 matches that of the top unloading sleeves 25, and the outer diameter of the bottom unloading sleeve 23 matches the inner diameter of the top unloading sleeve 25, and the top unloading sleeve 25 is sleeved on the bottom unloading sleeve 25. The outer wall of the material sleeve 23, the bottom of the second screen plate 24 is provided with a first screen plate 22, the aperture of the screening of the first screen plate 22 matches the aperture of the top unloading sleeve 25, the reciprocating shearing unit also includes a mobile frame 7 respectively arranged on both sides of the vibrating screening machine housing 5, the inner bottom of the mobile frame 7 is fixedly connected to the second fixed seat 19, the top of the second fixed seat 19 is rotatably connected to the large bevel gear 20, the inner side of the mobile frame 7 is rotatably connected to the second shaft rod 29, one end of the second shaft rod 29 is fixedly connected to the small bevel gear 31 meshing with the large bevel gear 20, one side of the mobile frame 7 is fixedly connected to a protective plate 37, and both sides of the second screen plate 24 are fixedly connected to a protective plate 37, and the other end of the second shaft rod 29 passes through the external fixed The first sieve plate 22 is provided with a second trapezoidal slide 32 on one side of the first sieve plate 22, and a second trapezoidal slide 33 is provided on the inner side of the first sieve plate 22 to match the second trapezoidal slide 32. 3 is slidably connected to the outside of the second trapezoidal slide rail 32, and the driving assembly includes two groups of first fixed seats 14 respectively fixedly connected to both sides of the vibration screening machine housing 5, each group of first fixed seats 14 is provided with two, and one side of the first fixed seat 14 of the group on the same side is fixedly connected to the second motor 30, and the execution end of the second motor 30 passes through the outside of the first fixed seat 14 and is fixedly connected to the second reciprocating screw rod 17, one end of the second reciprocating screw rod 17 is fixedly connected to the first reciprocating screw rod 15 through the column connecting rod 16, and one end of the first reciprocating screw rod 15 is rotatably connected to the first fixed seat 14, and the inner side of the other first fixed seat 14 is rotatably connected to the limiting slide rod 18, and the outer walls of the first reciprocating screw rod 15 and the second reciprocating screw rod 17 are threadedly connected to the movable frame 7.A second slide groove matching the limiting slide rod 18 is provided on the inner side of the mobile frame 7, and the mobile frame 7 is slidably connected to the limiting slide rod 18 through the second slide groove. The outer wall of the columnar connecting rod 16 is fixedly connected to two first trapezoidal slide rails 21, and a first slide groove matching the first trapezoidal slide rails 21 is provided inside the large bevel gear 20, and the large bevel gear 20 is slidably connected to the outer wall of the first trapezoidal slide rail 21 through the first slide groove. The crushing operation of the crushing roller 47 is a prior art. Since this solution does not involve improvements to these components of the crushing roller 47, this solution does not describe them in detail. A vibration motor for vibrating the third screen plate 26 is installed on one side of the vibrating screening machine housing 5. Since how the vibrating screening machine housing 5 vibrates is a prior art, this solution does not describe them in detail. The first screen plate 22 is formed by woven wire mesh or made of iron material, so that the mesh inside the first screen plate 22 can be used for shearing operation. When the equipment needs to be used, the equipment power is started first, and then the old asphalt is sent from the feed channel 3 into the crushing bin 2 through the conveying equipment, and then the old asphalt is crushed by the crushing roller 47. The crushed asphalt will fall between the two loading plates 13, and then the first motor 11 is started intermittently to drive the roller 12 to rotate, and at the same time drive the loading plates 13 to rotate so that the crushed asphalt between the loading plates 13 falls to the top of the third screen plate 26. At this time, the vibrating screening machine housing 5 drives the third screen plate 26, the second screen plate 24 and the first screen plate 22 to vibrate, so that the asphalt on the top of the third screen plate 26 can be screened, and then falls to the bottom of the bottom discharge sleeve 23. At this time, the two second motors 30 respectively drive the two cylindrical connecting rods 16 to rotate through the second reciprocating screw rod 17, and at the same time the cylindrical connecting rod 16 drives the large bevel gear 20 in the second fixed The top of the seat 19 rotates, thereby driving the small bevel gear 31 to rotate, and drives the rotating circular plate 27 to rotate through the second shaft 29, which drives the sleeve shaft 34 to rotate inside the sleeve rod 28 through the rotating circular plate 27 and pushes the fixed block 36 to move back and forth laterally through the connecting shaft 35, thereby driving the first screen plate 22 to move back and forth laterally on the second trapezoidal slide rail 32 through the two fixed blocks 36, so that the first screen plate 22 can move back and forth alternately with the bottom discharge sleeve 23 through the first screen plate 22's own leakage groove and the bottom discharge sleeve 23, and shear the asphalt entering the bottom of the bottom discharge sleeve 23. The interlaced movement of the first screen plate 22 leakage groove and the bottom discharge sleeve 23 forms a shearing force similar to scissors, which performs a shearing operation on the screened asphalt fragments. Traditional screening only screens particles by the size of the sieve hole, while the shearing action can forcibly break the particles that are stuck together or exceed the particle size standard, so that the final discharged asphalt fragments are more uniform and meet the particle size requirements of the recycled asphalt, thereby greatly improving the processing efficiency of the screening process, and thus improving the overall processing efficiency of the equipment; When the second motor 30 is started, the second motor 30 drives the second reciprocating screw 17 and drives the first reciprocating screw 15 to rotate together through the cylindrical connecting rod 16, thereby driving the moving frame 7 to drive the second fixed seat 19 and the large bevel gear 20 to reciprocate on the outer wall of the first trapezoidal slide rail 21, thereby ensuring that the large bevel gear 20 and the small bevel gear 31 are always engaged through mechanical limit, and when the moving frame 7 moves upward, the second trapezoidal slide rail 32 is driven upward through the protective plate 37, and the first screen plate 22 and the second screen plate 24 are driven to reciprocate up and down at the same time. At this time, the second screen plate 24 drives multiple bottom unloading sleeves 23 to move back and forth inside the top unloading sleeve 25, so that the reciprocating movement of the bottom unloading sleeve 23 inside the top unloading sleeve 25 is equivalent to a piston-type scraping action, which can remove the viscous asphalt lumps attached to the inner wall of the sleeve, and prevent the old asphalt from condensing on the inner wall of the sleeve due to temperature reduction, resulting in poor unloading. The extrusion pressure generated on the material during the expansion and contraction of the sleeve can break up the particle clusters formed by the adhesion of aging colloid, improve the fluidity of the material, thereby greatly improving the screening effect of asphalt and improving the overall processing efficiency of the equipment.

[0021] See also Figures 5 to 8 The auxiliary crushing mechanism includes a plurality of third fixed seats 52 fixedly connected to the inner side of each bottom discharge sleeve 23, the inner side of each third fixed seat 52 is rotatably connected to a shear plate 40 through the first shaft 6, and one side of each third fixed seat 52 is fixedly connected to a protective frame 39. One end of the first shaft 6 passes through the outside of the third fixed seat 52 and is fixedly connected to a first spur gear 43. A through groove matching the first spur gear 43 is provided inside each bottom discharge sleeve 23, and a spur rack 41 is meshed on one side of each first spur gear 43. The plurality of spur racks 41 are fixedly connected by a linking ring 42, and a third slide groove matching the linking ring 42 is provided on the inner side of the bottom discharge sleeve 23. The linking ring 42 is slidably connected to the bottom discharge sleeve 23 through the third slide groove. The auxiliary crushing mechanism also includes The arc-shaped guide rod 48 is rotatably connected to the inside of the bottom blanking sleeve 23, and one end of the arc-shaped guide rod 48 is fixedly connected to the arc-shaped rack 45. The bottom of the arc-shaped rack 45 and the bottom of the arc-shaped guide rod 48 are fixedly connected to a limit plate 49, and a push rod 50 is provided between the two limit plates 49, and one end of the push rod 50 is fixedly connected to the top of the first screen plate 22, and one side of the arc-shaped rack 45 is meshed with a second spur gear 46, and the top of the second spur gear 46 is fixedly connected to a one-way screw rod 44, one end of the one-way screw rod 44 passes through the outside of one of the spur racks 41 and is threadedly connected to the spur rack 41, and the one-way screw rod 44 is rotatably connected to the bottom blanking sleeve 23, and a fourth sliding groove matching the spur rack 41 is provided on the inner side of the bottom blanking sleeve 23, and the spur rack 41 is slidably connected to the bottom blanking sleeve 23 through the fourth sliding groove; The shear plate 40 is made of metal material and can be similar to a blade. When the first screen plate 22 moves back and forth laterally at the bottom of the bottom discharge sleeve 23, the first screen plate 22 drives multiple push rods 50 to push the limit plate 49 at the bottom of an arc-shaped rack 45 to move back and forth laterally, thereby driving the arc-shaped rack 45 to drive the second spur gear 46 to rotate back and forth, and then driving the one-way screw rod 44 to drive the spur rack 41 to rotate up and down. At this time, the spur rack 41 drives the first spur gear 43 to rotate back and forth, and drives the multiple shear plates 40 inside the bottom discharge sleeve 23 to swing back and forth, so that the end of the shear plate 40 can shear the asphalt, so that the large pieces of asphalt mixture that have not passed through the sieve holes during the screening process are sheared under the action of the shear plate 40, thereby avoiding the internal agglomeration of the discharge sleeve 23 and causing docking blockage, thereby ensuring the stability of subsequent discharge; When the crushed asphalt falls to the bottom of the screening frame after screening (since how the positive pressure pneumatic conveying device 8 realizes transportation is an existing technology, this solution does not go into too much detail), the asphalt is input from the conveying pipe 9 into the interior of the recovery furnace 10 through the positive pressure pneumatic conveying device 8, and the crushed asphalt is mixed and regenerated.

[0022] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for recycling and regenerating old asphalt mixture, characterized in that: include: A fixed frame (1), a crushing chamber (2) is installed on the top of the fixed frame (1), a crushing roller (47) is installed on the inner side of the crushing chamber (2), a feeding channel (3) is installed on the top of the crushing chamber (2), a vibration screening machine housing (5) is installed on the bottom of the crushing chamber (2), a positive pressure pneumatic conveying device (8) is installed at the discharge port of the vibration screening machine housing (5), a recovery furnace (10) is provided on one side of the fixed frame (1), a conveying pipe (9) is installed between the output end of the positive pressure pneumatic conveying device (8) and the feed port of the recovery furnace (10), and a temperature control component, a reciprocating shearing unit and an auxiliary crushing mechanism are respectively provided on the inner side of the vibration screening machine housing (5), and the temperature control component includes: Hot air blowers (4) are respectively installed on the outer walls of the crushing bin (2) and the vibrating screening machine housing (5). Connecting pipes (51) are respectively installed between the air outlet ends of the hot air blowers (4) and the air inlets of the crushing bin (2) and the vibrating screening machine housing (5). The first hot air blower (4) introduces 30-degree hot air into the crushing bin (2) to preheat the recovered old asphalt mixture, and the second hot air blower (4) introduces 60-degree hot air into the vibrating screening machine housing (5) to preheat the recovered old asphalt mixture again.

2. The old asphalt mixture recycling and regeneration device according to claim 1, characterized in that: A first motor (11) is fixedly connected to one side of the vibration screening machine housing (5); an execution end of the first motor (11) passes through the interior of the vibration screening machine housing (5) and is fixedly connected to a roller (12); and a plurality of loading plates (13) are fixedly connected to the outer wall of the roller (12).

3. The waste asphalt mixture recycling and regeneration device according to claim 1, characterized in that: The reciprocating shearing unit includes a third sieve plate (26) fixedly connected to the inner side of the vibrating screening machine housing (5), a plurality of top discharge sleeves (25) are fixedly connected to the inner side of the discharge port of the third sieve plate (26), a second sieve plate (24) is arranged below the third sieve plate (26), a plurality of bottom discharge sleeves (23) are fixedly connected to the top of the second sieve plate (24), and the number of the bottom discharge sleeves (23) matches the number of the top discharge sleeves (25), the outer diameter of the bottom discharge sleeve (23) matches the inner diameter of the top discharge sleeve (25), and the top discharge sleeve (25) is sleeved on the outer wall of the bottom discharge sleeve (23), a first sieve plate (22) is arranged at the bottom of the second sieve plate (24), and the pore size of the screening of the first sieve plate (22) matches the pore size of the top discharge sleeve (25).

4. The waste asphalt mixture recycling and regeneration device according to claim 3 is characterized in that: The reciprocating shearing unit further includes a movable frame (7) respectively arranged on both sides of the vibration screening machine housing (5), the inner bottom of the movable frame (7) is fixedly connected to a second fixed seat (19), the top of the second fixed seat (19) is rotatably connected to a large bevel gear (20), the inner side of the movable frame (7) is rotatably connected to a second shaft (29), one end of the second shaft (29) is fixedly connected to a small bevel gear (31) meshing with the large bevel gear (20), one side of the movable frame (7) is fixedly connected to a protective plate (37), and both sides of the second screen plate (24) are respectively fixedly connected to one of the protective plates (37), and the second The other end of the shaft (29) passes through the outside of the protective plate (37) and is fixedly connected to a rotating circular plate (27). A sleeve shaft (34) is fixedly connected to one side of the rotating circular plate (27). A sleeve rod (28) is provided on one side of the rotating circular plate (27), and the sleeve rod (28) is sleeved on the outer wall of the sleeve shaft (34). A connecting shaft (35) is fixedly connected to one side of the sleeve shaft (34). One end of the connecting shaft (35) is fixedly connected to a fixed block (36). The top of the fixed block (36) is fixedly connected to the bottom of the first screen plate (22). A driving component for driving the large bevel gear (20) to rotate is provided on the inner side of the movable frame (7).

5. The old asphalt mixture recycling and regeneration device according to claim 4 is characterized in that: The protective plate (37) is slidably connected to the vibration screening machine housing (5) through an auxiliary chute (38), and a second trapezoidal slide rail (32) is fixedly connected to one side of the protective plate (37). A trapezoidal slide rail (33) matching the second trapezoidal slide rail (32) is provided on the inner side of the first screen plate (22), and the first screen plate (22) is slidably connected to the outer side of the second trapezoidal slide rail (32) through the trapezoidal slide rail (33) provided on the inner side.

6. The waste asphalt mixture recycling and regeneration device according to claim 4, characterized in that: The driving assembly comprises two groups of first fixing seats (14) respectively fixedly connected to both sides of the vibration screening machine housing (5), each group of the first fixing seats (14) is provided with two, one side of the first fixing seats (14) of the group located on the same side is fixedly connected to the second motor (30), the execution end of the second motor (30) passes through the outside of the first fixing seat (14) and is fixedly connected to the second reciprocating screw (17), one end of the second reciprocating screw (17) is fixedly connected to the first reciprocating screw via a columnar connecting rod (16) (15), and one end of the first reciprocating screw (15) is rotatably connected to the first fixed seat (14), and the inner side of the other first fixed seat (14) is rotatably connected to the limiting slide (18), the outer walls of the first reciprocating screw (15) and the second reciprocating screw (17) are threadedly connected to the movable frame (7), and the inner side of the movable frame (7) is provided with a second sliding groove matching the limiting slide (18), and the movable frame (7) is slidably connected to the limiting slide (18) through the second sliding groove.

7. The waste asphalt mixture recycling and regeneration device according to claim 6, characterized in that: The outer wall of the columnar connecting rod (16) is fixedly connected to two first trapezoidal slide rails (21), and a first slide groove matching the first trapezoidal slide rails (21) is provided inside the large bevel gear (20), and the large bevel gear (20) is slidably connected to the outer wall of the first trapezoidal slide rail (21) through the first slide groove.

8. The waste asphalt mixture recycling and regeneration device according to claim 3, characterized in that: The auxiliary crushing mechanism includes a plurality of third fixed seats (52) fixedly connected to the inner side of each bottom discharge sleeve (23), the inner side of each third fixed seat (52) is rotatably connected to a shear plate (40) through a first shaft (6), one side of each third fixed seat (52) is fixedly connected to a protective frame (39), one end of the first shaft (6) passes through the outside of the third fixed seat (52) and is fixedly connected to a first straight gear (43), the interior of each bottom discharge sleeve (23) is provided with a through groove matching the first straight gear (43), and one side of each first straight gear (43) is meshed with a straight rack (41), the plurality of straight racks (41) are fixedly connected through a linking ring (42), and the inner side of the bottom discharge sleeve (23) is provided with a third sliding groove matching the linking ring (42), and the linking ring (42) is slidably connected to the bottom discharge sleeve (23) through the third sliding groove.

9. The waste asphalt mixture recycling and regeneration device according to claim 8, characterized in that: The auxiliary crushing mechanism also includes an arc-shaped guide rod (48) rotatably connected to the inside of the bottom discharge sleeve (23), one end of the arc-shaped guide rod (48) is fixedly connected to an arc-shaped rack (45), the bottom of the arc-shaped rack (45) and the bottom of the arc-shaped guide rod (48) are both fixedly connected to a limit plate (49), and a push rod (50) is provided between the two limit plates (49), and one end of the push rod (50) is fixedly connected to the top of the first screen plate (22), and one side of the arc-shaped rack (45) is engaged with a second straight Gear (46), the top of the second spur gear (46) is fixedly connected with a one-way screw rod (44), one end of the one-way screw rod (44) passes through the outside of one of the spur racks (41) and is threadedly connected to the spur rack (41), and the one-way screw rod (44) is rotatably connected to the bottom blanking sleeve (23), and a fourth sliding groove matching the spur rack (41) is provided on the inner side of the bottom blanking sleeve (23), and the spur rack (41) is slidably connected to the bottom blanking sleeve (23) through the fourth sliding groove.

Images