A device for preparing emulsified rubber modified asphalt by low-temperature plastic waste and a preparation method thereof

Abstract

The application relates to the technical field of modified asphalt preparation, in particular to a device for preparing emulsified rubber modified asphalt through plastic waste at low temperature and a preparation method thereof. The device for preparing emulsified rubber modified asphalt through plastic waste at low temperature comprises a lifting plate and a feeding port arranged on a stirring cylinder, the lifting plate is provided with a rotating disc, the rotating disc is provided with a storage cylinder, and the storage cylinder is arranged in three groups along the circumferential direction of the rotating disc; the rotating disc is connected with a stirring rod rotatingly arranged in the stirring cylinder through an intermittent rotating assembly; when the stirring rod rotates, the intermittent rotating assembly can drive the rotating disc to intermittently rotate, so that the storage cylinder is intermittently arranged above the feeding port; the storage cylinder is provided with a discharging mechanism, the discharging mechanism comprises a plugging assembly and a driving assembly; when the storage cylinder rotates to above the feeding port, a trigger member cooperates with the driving assembly, the plugging assembly can be driven to open the storage cylinder, and when the storage cylinder is separated from the feeding port, the driving assembly is reset, so that the storage cylinder can be quickly closed.

Description

Technical Field

[0001] This invention relates to the field of modified asphalt preparation technology, specifically to an apparatus and method for preparing rubber-modified asphalt by low-temperature emulsification of plastic waste. Background Technology

[0002] From asphalt penetration asphalt to dense-graded mixtures, and then to SMA and OGFC, each improvement in pavement structure has relied on major innovations in asphalt materials. Among the many asphalt materials, SBS modification technology accounts for more than 90% of modified asphalt, supporting large-scale transportation construction projects, such as highways.

[0003] Asphalt binder is made by modifying and adding external admixtures (modifiers) such as rubber, resin, polymer, finely ground rubber powder or other fillers, or by taking measures such as light oxidation processing of asphalt to improve the performance of asphalt or asphalt mixture.

[0004] Currently, the preparation of modified asphalt requires manual labor or multiple feeding devices to mix rubber powder, stabilizers, and modifiers with the base asphalt. However, when these materials are added to the base asphalt, continuous directional stirring can cause agglomeration between the materials, resulting in uneven mixing between the materials and the base asphalt. This can easily lead to unstable performance of the prepared modified asphalt. At the same time, the SBS modifier solution undergoes thermal degradation, causing a decrease in performance indicators such as softening point and ductility, thereby affecting the stability and durability of the modified asphalt. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus and method for preparing emulsified rubber-modified asphalt from plastic waste at low temperatures, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A device for preparing emulsified rubber modified asphalt from plastic waste at low temperature includes: a support plate and a feed inlet set on a mixing drum; a turntable is set on the support plate; a storage cylinder is set on the turntable; and three sets of storage cylinders are equidistantly arranged along the circumference of the turntable. The turntable is connected to a stirring rod rotatably installed inside the stirring drum via an intermittent rotation assembly. When the stirring rod rotates, the intermittent rotation assembly can drive the turntable to rotate intermittently, so that the storage cylinder is intermittently positioned above the feed inlet. The storage cylinder is equipped with a feeding mechanism, which includes a sealing component and a driving component. The driving component cooperates with a trigger component disposed on the mixing cylinder. When the storage cylinder rotates to above the feed inlet, the trigger component cooperates with the driving component to drive the sealing component to open the storage cylinder. When the storage cylinder separates from the feed inlet, the driving component resets and can quickly close the storage cylinder.

[0007] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature as described above: the intermittent rotation component includes a transmission structure and an intermittent structure. The transmission structure includes a main gear coaxially arranged with the stirring rod. The main gear meshes with a driven gear rotatably mounted on the stirring drum. The driven gear is connected to a drive rod rotatably mounted on the lifting plate through a first bevel gear set.

[0008] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature, as described above, comprises an intermittent structure including a passive rod rotatably mounted on the support plate. The passive rod is connected to a transmission rod rotatably mounted on the support plate via a second bevel gear set. The transmission rod is connected to the rotating shaft of the turntable via a linkage belt. A first sleeve is fitted on the passive rod, and the first sleeve is fixedly connected to a second sleeve fitted on the active rod. A first protrusion and a second protrusion are respectively formed on the inner walls of the first sleeve and the second sleeve. The first protrusion is slidably disposed in a composite groove opened on the side wall of the passive rod, and the second protrusion is slidably disposed in a closed groove opened on the side wall of the active rod.

[0009] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature as described above: the composite tank includes a first vertical tank opened on the side wall of the passive rod, and three sets of the first vertical tank are equally spaced, and adjacent sets of the first vertical tank are connected by a spiral tank.

[0010] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature, as described above, includes an arc-shaped toothed plate disposed on the mixing drum. The arc-shaped toothed plate cooperates with the driving component to drive the sealing component to quickly open or seal the storage cylinder. The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature, as described above, comprises a drive assembly and a sealing assembly mounted on a mounting plate on the storage cylinder. The drive assembly includes a drive gear rotatably mounted on the mounting plate, which meshes with a rack plate slidably mounted on the mounting plate. A sleeve ring is provided on the rack plate, and the sleeve ring is slidably connected to a slide rod mounted on the mounting plate. A first spring is sleeved on the slide rod, with one end of the first spring abutting against the end of the slide rod and the other end abutting against the sleeve ring.

[0011] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature, as described above, includes a sealing assembly comprising a sealing plate and a locking structure. The locking structure includes a plug-in cylinder disposed on the mounting plate, a locking rod slidably disposed within the plug-in cylinder, a roller rotatably mounted at one end of the locking rod away from the plug-in cylinder, and a protrusion at the other end of the locking rod. The protrusion is connected to the sealing plate, and the roller is connected to a locking element slidably disposed on the mounting plate.

[0012] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature as described above: the locking component includes a trigger block, a slide rail is provided on the side of the trigger block facing the mounting plate, a snap-fit ​​block fixedly connected to the rack plate is slidably disposed in the slide rail, and a first locking groove and a second locking groove are provided on the side of the trigger block facing the insertion cylinder, the first locking groove and the second locking groove are connected by a first inclined surface and a second inclined surface.

[0013] The apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature as described above: the sealing plate is slidably disposed on the mounting plate for sealing the storage cylinder, and the sealing plate is provided with a guide plate, the guide plate having an interlocking groove, the interlocking groove including a second vertical groove and an inclined groove formed on the guide plate.

[0014] A device for preparing emulsified rubber-modified asphalt from plastic waste at low temperature, as described above, is also proposed, comprising the following steps: Step 1: In the initial state, all three sets of storage cylinders are in a blocked state. After adding an appropriate amount of melted base asphalt into the mixing cylinder, start the mixing rod. Then, with the cooperation of the intermittent rotation component, the mixing rod drives the turntable to rotate intermittently so that each set of storage cylinders can stop above the inlet for a period of time. Step 2: When the storage cylinder rotates to above the feed inlet, the trigger can drive the drive assembly to move, so that the rack plate drives the locking component to slide relative to the mounting plate. During the sliding process, the locking component stores elastic potential energy until the storage cylinder stops rotating. Then, the locking component releases the elastic potential energy to push the locking component to slide relative to the mounting plate. During this process, the locking component cooperates with the guide plate to drive the sealing plate to slide relative to the storage cylinder, thereby opening the storage cylinder so that the storage cylinder can discharge material into the feed inlet. Step 3: As the turntable continues to rotate, the drive assembly separates from the trigger, and then the rack plate quickly resets. During this process, the locking component resets, causing the locking assembly to drive the sealing plate to reset, thereby closing the storage cylinder. Step 4: When the next set of storage cylinders rotates to the top of the feed inlet, repeat steps 2 and 3 to drive the storage cylinders to feed material into the mixing drum; Step 5: Repeat steps 2, 3, and 4 above to add the material in the storage cylinder to the base asphalt in batches. With the continuous stirring of the mixing rod, modified asphalt is produced.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the use of shredded plastic waste particles as a modifier can reduce environmental pollution from plastic waste dumps and achieve "green road" paving. By utilizing plastic waste, it is possible to reduce costs and compress production costs. By utilizing the heating pipes arranged around the inner wall of the mixing drum and working synchronously with the mixing rod, the fluidity of the base asphalt is maintained, and the modifier (rubber particles), stabilizer, and rubber powder are fully integrated with the base asphalt. Meanwhile, by setting up an intermittent rotation component and a feeding mechanism, during the continuous stirring of the mixing rod, the intermittent rotation component drives the three sets of storage cylinders to rotate intermittently, so that the three sets of storage cylinders intermittently stop above the feed inlet. During the rotation of the storage cylinders, the feeding mechanism cooperates with the trigger set near the feed inlet to open the storage cylinders, so that the three sets of storage cylinders can be automatically fed into the mixing drum in sequence. Compared with the traditional feeding method, the proportioning accuracy is high, no manual intervention is required, and the performance and preparation efficiency of modified asphalt can be effectively improved. In particular, the intermittent rotation component drives the material storage cylinder to discharge materials, ensuring that each material is mixed separately with the base asphalt in the mixing drum, avoiding the agglomeration of materials when added all at once, thereby improving the mixing uniformity of materials and base asphalt. At the same time, in conjunction with the forward and reverse stirring of the stirring rod, the mixing uniformity of each material with the base asphalt can be further improved, thereby improving the performance of modified asphalt. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a device for preparing emulsified rubber-modified asphalt from plastic waste at low temperatures.

[0017] Figure 2 This is a schematic diagram of the internal structure of the mixing drum in an apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0018] Figure 3 This is a schematic diagram of the connection between the intermittent rotating component and the stirring rod in a device for preparing emulsified rubber modified asphalt from plastic waste at low temperature.

[0019] Figure 4 This is a schematic diagram of the intermittent rotating component in a device for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0020] Figure 5This is a schematic diagram of the intermittent structure in an apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0021] Figure 6 This is a schematic diagram of the connection between the passive rod and the turntable in a device for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0022] Figure 7 This is a schematic diagram of the rotating disc in a device for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0023] Figure 8 This is a schematic diagram of the structure of the drive component and trigger element in a device for preparing emulsified rubber modified asphalt from plastic waste at low temperature.

[0024] Figure 9 This is a schematic diagram of the structure of the sealing component and the storage cylinder in a device for preparing emulsified rubber modified asphalt from plastic waste at low temperature.

[0025] Figure 10 This is a schematic diagram of the drive component in an apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0026] Figure 11 This is a schematic diagram of the sealing component in an apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0027] Figure 12 This is a schematic diagram of the locking component in an apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0028] Figure 13 This is a schematic diagram of the locking component in an apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperatures.

[0029] In the diagram: 1. Mixing drum; 101. Feed inlet; 2. Storage drum; 201. Mounting plate; 3. Lifting plate; 4. Turntable; 401. Rotating shaft; 5. Driven gear; 6. Main gear; 7. Mixing rod; 8. Arc-shaped toothed plate; 9. Driving rod; 901. Sealing groove; 10. Driven rod; 1001. First vertical groove; 1002. Spiral groove; 11. First sleeve; 1101. First protrusion; 12. Second sleeve; 1201. Second protrusion; 13. Second bevel gear set; 14. Transmission rod; 15. Sealing plate; 1501. 16. Feeding port; 17. Drive gear; 18. Rack plate; 19. Connecting ring; 10. Snap-fit ​​block; 11. Rubber washer; 12. Slide rod; 13. First spring; 24. Trigger block; 25. First locking groove; 26. Second locking groove; 27. First inclined surface; 28. Second inclined surface; 29. ​​Locking rod; 20. First locking groove; 20. Second locking groove; 21. Locking rod; 22. Protruding post; 23. Inserting sleeve; 24. Second spring; 25. Guide plate; 26. Second vertical groove; 27. Inclined groove; 28. Slide rail; 29. ​​First bevel gear set. Detailed Implementation

[0030] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0031] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0032] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail, in order to highlight the main points of this application.

[0033] Please see Figures 1-13 In this embodiment of the invention, an apparatus for preparing emulsified rubber-modified asphalt from plastic waste at low temperature includes: A lifting plate 3 and a feed inlet 101 are provided on the mixing drum 1. A turntable 4 is provided on the lifting plate 3. A storage cylinder 2 is provided on the turntable 4. Three sets of storage cylinders 2 are equidistantly arranged along the circumference of the turntable 4. Specifically, the three sets of storage cylinders 2 are respectively filled with rubber powder, modifier and stabilizer, and the mixing cylinder 1 is filled with molten base asphalt.

[0034] Specifically, in the preparation of modified asphalt, the base asphalt is first added to the mixing drum 1, and then rubber powder, modifier, and stabilizer are added to the base asphalt and mixed to obtain modified asphalt. Among them, plastic waste, such as polyethylene and polypropylene, can be added to the base asphalt as a modifier to improve the strength and durability of the asphalt. Modified asphalt prepared using waste plastic bottles and other materials paves "green roads" that take into account both environmental protection and performance, which not only extends the service life of roads, but also reduces the environmental impact of waste plastics.

[0035] In this invention, plastic waste is shredded into granules and stored in one of a set of storage cylinders 2 for preparation.

[0036] The turntable 4 is connected to the stirring rod 7, which is rotatably installed inside the stirring drum 1, via an intermittent rotation assembly. When the stirring rod 7 rotates, the intermittent rotation assembly can drive the turntable 4 to rotate intermittently, so that the storage drum 2 is intermittently positioned above the feed inlet 101. Specifically, please refer to Figures 1-7 The intermittent rotation assembly includes a transmission structure and an intermittent structure. The transmission structure includes a main gear 6 coaxially arranged with the stirring rod 7. The main gear 6 meshes with a driven gear 5 rotatably mounted on the stirring drum 1. The driven gear 5 is connected to the drive rod 9 rotatably mounted on the lifting plate 3 through a first bevel gear set 26. In detail, the aforementioned stirring rod 7 is controlled by a motor fixedly installed on the mixing drum 1. When the motor enters the working state, the output shaft of the motor can drive the stirring rod 7 to rotate continuously in the same direction, thereby mixing the base asphalt, stabilizer, modifier and rubber powder added to the mixing drum 1. The mixing drum 1 is equipped with a surrounding heating pipe inside the drum wall. During the stirring process of the stirring rod 7, the heating pipe can heat the mixing drum 1 at the same time, thereby promoting the mixing of base asphalt with stabilizer, modifier and rubber powder.

[0037] It is particularly important to note that the radius of the driven gear 5 is several times the radius of the main gear 6, so that when the stirring rod 7 rotates multiple times, it can only drive the driven gear 5 to rotate one revolution. Furthermore, the first bevel gear set 26 includes a first bevel gear and a second bevel gear. The first bevel gear is coaxially fixed with the driven gear 5, and the second bevel gear is coaxially fixed with the driving rod 9. The radius of the second bevel gear is several times the radius of the first bevel gear, so that when the first bevel gear rotates multiple times following the driven gear 5, it can only drive the driving rod 9 to rotate one revolution. With the cooperation of the main gear 6, the driven gear 5, and the first bevel gear set 26, the turntable 4 will drive the storage cylinder 2 to rotate slowly during subsequent intermittent structural operations, thereby reducing the frequency of feeding.

[0038] For further details, please refer to Figures 3-7The intermittent structure includes a passive rod 10 rotatably mounted on the lifting plate 3. The passive rod 10 is connected to a transmission rod 14 rotatably mounted on the lifting plate 3 via a second bevel gear set 13. The transmission rod 14 is connected to the rotating shaft 401 of the turntable 4 via a linkage belt. A first sleeve 11 is sleeved on the passive rod 10. The first sleeve 11 is fixedly connected to a second sleeve 12 sleeved on the active rod 9. A first protrusion 1101 and a second protrusion 1201 are respectively formed on the inner walls of the first sleeve 11 and the second sleeve 12. The first protrusion 1101 is slidably disposed in a composite groove opened on the side wall of the passive rod 10. The second protrusion 1201 is slidably disposed in a closed groove 901 opened on the side wall of the active rod 9. Preferably, the closed groove 901 is an annular groove opened around the outer wall of the active rod 9. The composite groove includes a first vertical groove 1001 formed on the side wall of the passive rod 10. The first vertical groove 1001 is provided in three sets at equal intervals, and adjacent sets of the first vertical groove 1001 are connected by a spiral groove 1002. In the initial state, the first sleeve 11 and the second sleeve 12 are close to the first bevel gear set 26, and the first protrusion 1101 engages with the stroke end of the first vertical groove 1001. After the motor starts, the main gear 6 and the driven gear 5 enter a meshing transmission state, driving the driven gear 5 to rotate counterclockwise (engagement). Figure 1 , Figure 4 (Description), and then, with the cooperation of the first bevel gear set 26, the gear 5 drives the drive rod 9 to rotate counterclockwise.

[0039] During the counterclockwise rotation of the drive rod 9, the closed groove 901 engages with the second protrusion 1201, driving the second sleeve 12 to move the driven rod 10 along the axial direction of the drive rod 9. During this process, the first protrusion 1101 slides along the first vertical groove 1001. At this time, the turntable 4 remains stationary, and the stirring rod 7 continuously stirs the asphalt to keep the base asphalt completely in a fluid state until the first protrusion 1101 contacts the spiral groove 1002. The first protrusion 1101 engages with the spiral groove 1002, forcing the driven rod 10 to rotate counterclockwise. Then, with the cooperation of the second bevel gear set 13, the driven rod 10 drives the transmission rod 14 and the turntable 4 to rotate clockwise (in conjunction with...). Figure 1 (Description) As the second sleeve 12 moves, the first protrusion 1101 separates from the spiral groove 1002 and engages with the next first vertical groove 1001. At this time, the turntable 4 rotates 120 degrees so that the next set of storage cylinders 2 moves to the top of the feed inlet 101. During this process, the feeding mechanism on the storage cylinder 2 cooperates with the trigger set near the feed inlet 101 to open the set of storage cylinders 2 so that the storage cylinders 2 can feed one of the following into the mixing drum 1: rubber powder, modifier, and stabilizer.

[0040] As the first protrusion 1101 moves with the second sleeve 12, the first protrusion 1101 slides along the first vertical groove 1001. During this process, the storage cylinder 2 remains open, continuously feeding material into the mixing cylinder 1 until the first protrusion 1101 engages with the next spiral groove 1002. When the turntable 4 continues to rotate, the storage cylinder 2 is closed. The above process continues until the next set of storage cylinders 2 moves above the feed inlet 101, at which point the next material is released.

[0041] After repeating this process three times, the three sets of storage cylinders 2 sequentially add rubber powder, modifier, and stabilizer into the mixing cylinder 1. This avoids material agglomeration that can occur with a single feeding. After all three materials have been added, the second sleeve 12 moves to the end of the stroke of the drive rod 9. As the drive rod 9 continues to rotate, the second sleeve 12 moves in the opposite direction. During this process, the passive rod 10, in conjunction with the composite tank, drives the turntable 4 to rotate in the opposite direction. Throughout the process, the feeding mechanism does not open any of the storage cylinders 2. Only the mixing rod 7 continuously performs the mixing operation to ensure that the rubber powder, modifier, and stabilizer are completely mixed with the base asphalt. After the second sleeve 12 returns to its initial position, the motor stops. At this point, the materials being mixed in both the forward and reverse directions by the mixing rod 7 are uniformly mixed to form modified asphalt.

[0042] For details, please refer to Figure 1 , Figure 2 , Figures 8-13 The feeding mechanism includes a blocking component and a driving component. The driving component cooperates with a trigger on the mixing drum 1. When the storage drum 2 rotates above the feed inlet 101, the trigger cooperates with the driving component to drive the blocking component to open the storage drum 2. When the storage drum 2 separates from the feed inlet 101, the driving component resets and can quickly close the storage drum 2. The triggering element includes an arc-shaped toothed plate 8 disposed on the stirring cylinder 1. The arc-shaped toothed plate 8 cooperates with the driving component to drive the sealing component to quickly open or block the storage cylinder 2. In particular, please see Figure 2 The aforementioned arc-shaped toothed plate 8 is located near the feed inlet 101 and can cooperate with the drive assembly on the storage cylinder 2 that moves above the feed inlet 101, thereby driving the sealing assembly to open the storage cylinder 2 so that the storage cylinder 2 can discharge material into the mixing cylinder 1.

[0043] The driving assembly and the sealing assembly are mounted on the mounting plate 201 on the storage cylinder 2. The driving assembly includes a driving gear 16 rotatably mounted on the mounting plate 201. The driving gear 16 meshes with a rack plate 17 slidably mounted on the mounting plate 201. A sleeve ring 1701 is provided on the rack plate 17. The sleeve ring 1701 is slidably connected to a slide rod 18 provided on the mounting plate 201. A first spring 19 is sleeved on the slide rod 18. One end of the first spring 19 abuts against the end of the slide rod 18, and the other end abuts against the sleeve ring 1701. Specifically, please refer to Figure 10 The first spring 19 is always in a compressed state, which pushes the rack plate 17 to move to the left. Therefore, in the initial state, only a small section of the rack plate 17 on the right side is engaged with the drive gear 16.

[0044] In conjunction with the above, during the counterclockwise rotation of turntable 4, when storage cylinder 2 approaches feed inlet 101, drive gear 16 is driven by arc-shaped toothed plate 8 to rotate clockwise (in conjunction with...). Figure 1 , Figure 10 Then, the drive gear 16 drives the rack plate 17 to move to the right. During this process, the rack plate 17 further compresses the first spring 19 and triggers the sealing component. When the turntable 4 stops, the sealing component quickly opens the storage cylinder 2, allowing the storage cylinder 2 to continuously feed material into the feed inlet 101. When the turntable 4 continues to rotate, the drive gear 16 separates from the arc-shaped toothed plate 8. At this time, the first spring 19 releases its elastic potential energy, driving the rack plate 17 to reset. During this process, the sealing component is triggered again, which can seal the storage cylinder 2, allowing the storage cylinder 2 to rotate to the next position. When the storage cylinder 2 rotates to the next position, the drive gear 16 on the next set of storage cylinders 2 cooperates with the arc-shaped toothed plate 8 to open the next set of storage cylinders 2, and then another material is added into the mixing drum 1.

[0045] Furthermore, the sealing assembly includes a sealing plate 15 and a locking structure. The locking structure includes a plug-in cylinder 22 disposed on the mounting plate 201. A locking rod 21 is slidably disposed inside the plug-in cylinder 22. A roller is rotatably mounted at one end of the locking rod 21 away from the plug-in cylinder 22. A protrusion 2101 is disposed at the other end of the locking rod 21. The protrusion 2101 is connected to the sealing plate 15. The roller is connected to a locking element slidably disposed on the mounting plate 201. For details, please refer to Figures 11-13 The locking rod 21 is also fitted with a second spring 23. One end of the second spring 23 abuts against the limiting ring formed on the locking rod 21, and the other end abuts against the insertion tube 22. In particular, the second spring 23 is always in a compressed state, pushing the roller to contact the locking member.

[0046] The locking component includes a trigger block 20. A slide rail 25 is provided on the side of the trigger block 20 facing the mounting plate 201. A snap-fit ​​block 1702 fixedly connected to the rack plate 17 is slidably disposed in the slide rail 25. A first locking groove 2001 and a second locking groove 2002 are provided on the side of the trigger block 20 facing the insertion cylinder 22. The first locking groove 2001 and the second locking groove 2002 are connected by a first inclined surface 2003 and a second inclined surface 2004. The sealing plate 15 is slidably disposed on the mounting plate 201 for sealing the storage cylinder 2, and the sealing plate 15 is provided with a guide plate 24, the guide plate 24 is provided with an interlocking groove, the interlocking groove includes a second vertical groove 2401 and an inclined groove 2402 formed on the guide plate 24; In particular, please see Figure 12 , Figure 13 The aforementioned sealing plate 15 has a discharge port 1501, which is connected to the storage cylinder 2, allowing the storage cylinder 2 to be opened to allow material to be discharged into the inlet 101. The height of the first locking groove 2001 is lower than that of the second locking groove 2002, and the locking rod 21 is provided with a protrusion 2101. The protrusion 2101 is slidably disposed in the fitting groove. In the initial state, the snap-fit ​​block 1702 abuts against the right side of the slide rail 25, the roller is connected to the second locking groove 2002, and the protrusion 2101 is located at the connection between the second vertical groove 2401 and the inclined groove 2402. At this time, the sealing plate 15 is in the state of sealing the storage cylinder 2 (to... Figure 1 (Description to be accurate).

[0047] In conjunction with the above, during the process of the drive gear 16 rotating clockwise to drive the rack plate 17 to move to the right (and... Figure 10 (Based on the description), during this process, the latching block 1702 can drive the slide rail 25 and the trigger block 20 to move to the right (corresponding to...). Figure 13 The second locking groove 2002 of the roller separates, and under the guidance of the second inclined surface 2004, the second spring 23 is further compressed. The locking rod 21 rises and drives the protrusion 2101 to slide along the second vertical groove 2401 until the turntable 4 stops rotating. At this time, the rack plate 17 stops moving. The second inclined surface 2004 separates from the roller and the first inclined surface 2003 contacts the roller. Then, the second spring 23 quickly releases its elastic potential energy to push the locking rod 21 down. The pressure generated by the roller on the first inclined surface 2003 can force the trigger block 20 to slide relative to the rack plate 17 until the roller engages with the first locking groove 2001.

[0048] When the locking rod 21 descends rapidly, the protrusion 2101 first slides along the second vertical groove 2401 and then engages with the inclined groove 2402. Immediately afterwards, the protrusion 2101 and the inclined groove 2402 cooperate to drive the guide plate 24 to move the sealing plate 15 to the right so that the discharge port 1501 engages with the storage cylinder 2, thereby opening the storage cylinder 2 so that the storage cylinder 2 can discharge material into the mixing cylinder 1.

[0049] After a period of time, the turntable 4 continues to rotate clockwise, driving the gear 16 to separate from the arc-shaped toothed plate 8. Then, the first spring 19 releases its elastic potential energy, pushing the rack plate 17 to reset. During this process, the rack plate 17 can drive the trigger block 20 to move in the opposite direction. During the reverse movement of the trigger block 20, the locking rod 21 cooperates with the trigger block 20, rising first and then falling rapidly. During the rapid descent of the locking rod 21, the protrusion 2101 cooperates with the fitting groove, which can drive the sealing plate 15 to return to the state of sealing the storage cylinder 2, so that the storage cylinder 2 will not leak material during rotation.

[0050] After repeating the above process three times, the three sets of materials are added into the mixing drum 1 at once. Then, the turntable 4 reverses. During the reversal, the drive gear 16 meshes with the arc-shaped toothed plate 8 and rotates counterclockwise. During this process, since only a small section of the rack plate 17 meshes with the drive gear 16, the drive gear 16 can only drive the rack plate 17 to move a small distance to the left. This distance is buffered by the rubber gasket 1703 set on the sleeve ring 1701. Therefore, the storage drum 2 will not be opened during the reversal, so that only the stirring rod 7 performs the stirring operation during the reversal of the turntable 4, thereby ensuring the full mixing of the materials and improving the performance of the modified asphalt.

[0051] Correspondingly, the present invention also proposes an apparatus for preparing emulsified rubber-modified asphalt from plastic waste at low temperature, as described above, comprising the following steps: Step 1: In the initial state, all three sets of storage cylinders 2 are in a blocked state. After adding an appropriate amount of melted matrix asphalt into the mixing cylinder 1, start the mixing rod 7. Then, with the cooperation of the intermittent rotation component, the mixing rod 7 drives the turntable 4 to rotate intermittently so that each set of storage cylinders 2 can stop above the feed inlet 101 for a period of time. Step 2: When the storage cylinder 2 rotates to above the feed inlet 101, the trigger can drive the drive assembly to move, so that the rack plate 17 drives the locking member to slide relative to the mounting plate 201. During the sliding process, the locking assembly stores elastic potential energy until the storage cylinder 2 stops rotating. The locking assembly releases the elastic potential energy to push the locking member to slide relative to the mounting plate 201. During this process, the locking assembly cooperates with the guide plate 24 to drive the sealing plate 15 to slide relative to the storage cylinder 2, thereby opening the storage cylinder 2 so that the storage cylinder 2 can discharge material into the feed inlet 101. Step 3: When the turntable 4 continues to rotate, the drive component separates from the trigger, and then the rack plate 17 quickly resets. During this process, the locking component resets, causing the locking component to drive the sealing plate 15 to reset, thereby closing the storage cylinder 2. Step 4: When the next set of storage cylinders 2 rotates to above the feed inlet 101, repeat steps 2 and 3 to drive the storage cylinders 2 to feed material into the mixing cylinder 1. Step 5: Repeat steps 2, 3, and 4 above to add the material in storage cylinder 2 to the base asphalt in batches. With the continuous stirring of stirring rod 7, modified asphalt is obtained.

[0052] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for preparing emulsified rubber-modified asphalt from plastic waste at low temperature, characterized in that, include: The lifting plate and the feed inlet are set on the mixing drum. The lifting plate is equipped with a turntable, and the turntable is equipped with a storage cylinder. Three sets of storage cylinders are equidistantly arranged along the circumference of the turntable. The turntable is connected to the stirring rod, which is rotatably installed inside the mixing drum, via an intermittent rotation component. When the stirring rod rotates, the intermittent rotation component can drive the turntable to rotate intermittently, so that the storage cylinder is intermittently positioned above the feed inlet. The storage cylinder is equipped with a feeding mechanism, which includes a sealing component and a driving component. The driving component cooperates with a trigger on the mixing cylinder. When the storage cylinder rotates to the top of the feed inlet, the trigger cooperates with the driving component to drive the sealing component to open the storage cylinder. When the storage cylinder separates from the feed inlet, the driving component resets and can quickly close the storage cylinder. The intermittent rotation assembly includes a transmission structure and an intermittent structure. The transmission structure includes a main gear coaxially arranged with the stirring rod. The main gear meshes with a driven gear rotatably mounted on the stirring cylinder. The driven gear is connected to the drive rod rotatably mounted on the lifting plate through a first bevel gear set. The intermittent structure includes a passive rod rotatably mounted on a lifting plate. The passive rod is connected to a transmission rod rotatably mounted on the lifting plate via a second bevel gear set. The transmission rod is connected to the rotating shaft of the turntable via a linkage belt. A first sleeve is fitted on the passive rod. The first sleeve is fixedly connected to a second sleeve fitted on the active rod. A first protrusion and a second protrusion are formed on the inner walls of the first sleeve and the second sleeve, respectively. The first protrusion is slidably disposed in a composite groove opened on the side wall of the passive rod, and the second protrusion is slidably disposed in a closed groove opened on the side wall of the active rod. The composite groove includes a first vertical groove formed on the side wall of the passive rod. Three sets of the first vertical groove are equally spaced, and adjacent sets of the first vertical groove are connected by a spiral groove. In the initial state, the first sleeve and the second sleeve are close to the first bevel gear set, and the first protrusion engages with the end of the stroke of the first vertical groove. After the motor starts, the main gear and the driven gear enter the meshing transmission state, driving the driven gear to rotate counterclockwise. Subsequently, with the cooperation of the first bevel gear set, the driven gear drives the driving rod to rotate counterclockwise. During the counterclockwise rotation of the active rod, the closed groove engages with the second protrusion, driving the second sleeve to move the passive rod along the axial direction of the active rod. During this process, the first protrusion slides along the first vertical groove. At this time, the turntable remains stationary, and the stirring rod continuously stirs the asphalt to keep the base asphalt completely in a fluid state until the first protrusion contacts the spiral groove. The first protrusion engages with the spiral groove, forcing the passive rod to rotate counterclockwise. Then, with the cooperation of the second bevel gear set, the passive rod drives the transmission rod and the turntable to rotate clockwise. As the second sleeve moves, the first protrusion separates from the spiral groove and engages with the next first vertical groove. At this time, the turntable rotates 120 degrees to move the next set of storage cylinders above the inlet. During this process, the feeding mechanism on the storage cylinder engages with the trigger set near the inlet to open the set of storage cylinders, allowing the storage cylinders to feed one of the following into the stirring drum: rubber powder, modifier, and stabilizer. As the first protrusion moves with the second sleeve, it slides along the first vertical groove. During this process, the storage cylinder remains open, continuously feeding material into the mixing cylinder until the first protrusion engages with the next spiral groove. When the turntable continues to rotate, the storage cylinder is closed. The above process continues until the next set of storage cylinders moves above the feed inlet, at which point the next material is released. The triggering element includes an arc-shaped toothed plate set on the mixing drum. The arc-shaped toothed plate cooperates with the driving component to drive the sealing component to quickly open or block the storage drum. The drive assembly and the sealing assembly are mounted on the mounting plate on the storage cylinder. The drive assembly includes a drive gear that is rotatably mounted on the mounting plate. The drive gear meshes with a rack plate that is slidably mounted on the mounting plate. A sleeve ring is provided on the rack plate. The sleeve ring is slidably connected to a slide rod that is mounted on the mounting plate. A first spring is sleeved on the slide rod. One end of the first spring abuts against the end of the slide rod, and the other end abuts against the sleeve ring. The sealing assembly includes a sealing plate and a locking structure. The locking structure includes a plug-in tube mounted on the mounting plate, a locking rod slidably mounted inside the plug-in tube, a roller rotatably mounted on one end of the locking rod away from the plug-in tube, a protrusion at the other end of the locking rod, the protrusion cooperating with the sealing plate, and the roller cooperating with a locking element slidably mounted on the mounting plate. During the clockwise rotation of the turntable, when the storage cylinder approaches the feed inlet, the drive gear, driven by the arc-shaped toothed plate, rotates clockwise. The drive gear then moves the rack plate to the right. During this process, the rack plate further compresses the first spring and triggers the sealing component. When the turntable stops, the sealing component quickly opens the storage cylinder, allowing continuous feeding into the feed inlet. When the turntable continues to rotate, the drive gear separates from the arc-shaped toothed plate. At this point, the first spring releases its elastic potential energy, causing the rack plate to reset. During this process, the sealing component is triggered again, sealing the storage cylinder and allowing it to rotate to the next position. When the storage cylinder reaches the next position, the drive gear on the next set of storage cylinders engages with the arc-shaped toothed plate to open that set of storage cylinders, allowing another type of material to be added into the mixing drum.

2. The apparatus for preparing emulsified rubber-modified asphalt from plastic waste at low temperature according to claim 1, characterized in that, The locking component includes a trigger block, a slide rail is provided on the side of the trigger block facing the mounting plate, a snap-fit ​​block is slidably disposed in the slide rail and fixedly connected to the rack plate, and a first locking groove and a second locking groove are provided on the side of the trigger block facing the insertion cylinder, the first locking groove and the second locking groove are connected by a first inclined surface and a second inclined surface.

3. The apparatus for preparing emulsified rubber-modified asphalt from plastic waste at low temperature according to claim 2, characterized in that, The sealing plate is slidably disposed on the mounting plate for sealing the storage cylinder, and the sealing plate is provided with a guide plate, the guide plate having an interlocking groove, the interlocking groove including a second vertical groove and an inclined groove formed on the guide plate.

4. A method for preparing emulsified rubber-modified asphalt from plastic waste at low temperature, characterized in that, The apparatus for preparing emulsified rubber-modified asphalt from plastic waste at low temperature, as described in claim 3, includes the following steps: Step 1: In the initial state, all three sets of storage cylinders are in a blocked state. After adding an appropriate amount of melted base asphalt into the mixing cylinder, start the mixing rod. Then, with the cooperation of the intermittent rotation component, the mixing rod drives the turntable to rotate intermittently so that each set of storage cylinders can stop above the inlet for a period of time. Step 2: When the storage cylinder rotates to above the feed inlet, the trigger can drive the drive assembly to move, so that the rack plate drives the locking component to slide relative to the mounting plate. During the sliding process, the locking component stores elastic potential energy until the storage cylinder stops rotating. Then, the locking component releases the elastic potential energy to push the locking component to slide relative to the mounting plate. During this process, the locking component cooperates with the guide plate to drive the sealing plate to slide relative to the storage cylinder, thereby opening the storage cylinder so that the storage cylinder can discharge material into the feed inlet. Step 3: As the turntable continues to rotate, the drive assembly separates from the trigger, and then the rack plate quickly resets. During this process, the locking component resets, causing the locking assembly to drive the sealing plate to reset, thereby closing the storage cylinder. Step 4: When the next set of storage cylinders rotates to the top of the feed inlet, repeat steps 2 and 3 to drive the storage cylinders to feed material into the mixing drum; Step 5: Repeat steps 2, 3, and 4 above to add the material in the storage cylinder to the base asphalt in batches. With the continuous stirring of the mixing rod, modified asphalt is produced.

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