Device and method for preparing rubber modified asphalt by emulsifying plastic waste at low temperature

Abstract

The invention relates to the technical field of modified asphalt preparation, in particular to a device and method for preparing rubber modified asphalt through low-temperature emulsification of plastic waste, the device for preparing rubber modified asphalt through low-temperature emulsification of plastic waste comprises a lifting plate arranged on a stirring barrel and a feeding port, a rotary table is arranged on the lifting plate, storage barrels are arranged on the rotary table, and three sets of storage barrels are arranged in the circumferential direction of the rotary table; the rotating disc is connected with a stirring rod rotationally mounted in the stirring barrel through an intermittent rotating assembly, and when the stirring rod rotates, the intermittent rotating assembly can drive the rotating disc to intermittently rotate, so that the material storage barrel is intermittently arranged above the feeding opening; and a discharging mechanism is arranged on the material storage barrel and comprises a blocking assembly and a driving assembly, when the material storage barrel rotates to the position above the feeding port, the triggering piece is matched with the driving assembly, the blocking assembly can be driven to open the material storage barrel, and when the material storage barrel is separated from the feeding port, the driving assembly resets, and the material storage barrel can be rapidly closed.

Description

Technical Field

[0001] The present invention relates to the technical field of modified asphalt preparation, and specifically to a device and a preparation method for preparing emulsified rubber modified asphalt at low temperature from plastic waste. Background Art

[0002] From asphalt penetration to dense-graded mixture, and then to SMA and OGFC, each improvement in pavement structure depends on a major innovation in asphalt materials. Among various asphalt materials, SBS modification technology accounts for more than 90% of modified asphalt, supporting major transportation construction projects represented by expressways.

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

[0004] At the present stage, when preparing modified asphalt, rubber powder, stabilizer and modifier need to be added to matrix asphalt manually or with the cooperation of multiple feeding devices for mixing. However, when these materials are added to matrix asphalt, continuous and directional stirring will cause agglomeration between the materials, and then uneven mixing between the materials and matrix asphalt, which easily leads to unstable performance of the prepared modified asphalt. At the same time, the SBS modifier solution undergoes thermal degradation, resulting in a decline in performance indicators such as softening point and ductility, thus affecting the stability and durability of modified asphalt. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and a preparation method for preparing emulsified rubber modified asphalt at low temperature from plastic waste to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions: A device for preparing emulsified rubber modified asphalt at low temperature from plastic waste, comprising: a lifting plate and a feed inlet provided on a mixing barrel, a turntable provided on the lifting plate, and a storage barrel provided on the turntable. Three groups of the storage barrels are equidistantly arranged along the circumferential direction of the turntable; The turntable is connected to a stirring rod rotatably installed in the mixing barrel through an intermittent rotation assembly. When the stirring rod rotates, the intermittent rotation assembly can drive the turntable to rotate intermittently, so that the storage barrel is intermittently placed above the feed inlet; A blanking mechanism is provided on the storage bin. The blanking mechanism includes a blocking component and a driving component. The driving component cooperates with a triggering member provided on the mixing barrel. When the storage bin rotates to the upper part of the feeding port, the triggering member cooperates with the driving component, which can drive the blocking component to act, thereby opening the storage bin. And when the storage bin is separated from the feeding port, the driving component resets and can quickly close the storage bin.

[0007] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste 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 installed on the mixing barrel. The driven gear is connected to a driving rod rotatably installed on the lifting plate through a first bevel gear set.

[0008] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The intermittent structure includes a driven rod rotatably installed on the lifting plate. The driven rod is connected to a transmission rod rotatably installed on the lifting plate through a second bevel gear set. The transmission rod is connected to the rotating shaft of the turntable through a linkage belt. And a first sleeve is sleeved on the driven rod. The first sleeve is fixedly connected to a second sleeve sleeved on the driving rod. And 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 arranged in a composite groove opened on the side wall of the driven rod. The second protrusion is slidably arranged in a closed groove opened on the side wall of the driving rod.

[0009] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The composite groove includes a first vertical groove opened on the side wall of the driven rod. There are three groups of the first vertical grooves arranged at equal intervals. And adjacent two groups of the first vertical grooves are connected by a spiral groove.

[0010] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The triggering member includes an arc-shaped toothed plate provided on the mixing barrel. The arc-shaped toothed plate cooperates with the driving component, which can drive the blocking component to quickly conduct or block the storage bin. The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The driving component and the blocking component are arranged on a mounting plate provided on the storage bin. The driving component includes a driving gear rotatably installed on the mounting plate. The driving gear meshes with a rack plate slidably arranged on the mounting plate. A socket ring is arranged on the rack plate. The socket ring is slidably connected to a sliding rod provided on the mounting plate. A first spring is sleeved on the sliding rod. One end of the first spring abuts against the end of the sliding rod, and the other end abuts against the socket ring.

[0011] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The plugging component includes a plugging plate and a locking structure. The locking structure includes a plugging cylinder arranged on the mounting plate. A locking rod is slidably arranged in the plugging cylinder. A roller is rotatably installed at one end of the locking rod away from the plugging cylinder. A protruding column is arranged at the other end of the locking rod. The protruding column is cooperatively connected with the plugging plate. The roller is cooperatively connected with a locking member slidably arranged on the mounting plate.

[0012] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The locking member includes a trigger block. A slide rail is arranged on the side of the trigger block facing the mounting plate. A clamping block fixedly connected with the rack plate is slidably arranged in the slide rail. And a first locking groove and a second locking groove are arranged on the side of the trigger block facing the plugging cylinder. The first locking groove and the second locking groove are connected by a first inclined surface and a second inclined surface.

[0013] The device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above: The plugging plate is slidably arranged on the mounting plate for plugging the storage cylinder. And a guiding plate is arranged on the plugging plate. A fitting groove is formed in the guiding plate. The fitting groove includes a second vertical groove and an inclined groove formed in the guiding plate.

[0014] There is also provided a method using the device for preparing emulsified rubber modified asphalt by low-temperature plastic waste as described above, including the following steps: Step 1: In the initial state, all three storage cylinders are in a plugged state. After adding an appropriate amount of melted matrix asphalt into the mixing cylinder, start the stirring rod. Subsequently, under the cooperation of the intermittent rotation assembly, the stirring rod drives the turntable to rotate intermittently, so that each storage cylinder can stop above the feeding port for a period of time. Step 2: When the storage cylinder rotates above the feeding port, the trigger member can drive the driving component to act, so that the rack plate drives the locking member to slide relative to the mounting plate. During the sliding process, the locking component stores elastic potential energy. Until the storage cylinder stops rotating, the locking component releases the elastic potential energy to push the locking member to slide relative to the mounting plate. During this process, the locking component cooperates with the guiding plate to drive the plugging plate to slide relative to the storage cylinder, thereby opening the storage cylinder to enable the storage cylinder to discharge materials into the feeding port. Step 3: When the turntable continues to rotate, the driving component is separated from the trigger member. Immediately, the rack plate quickly resets. During this process, the locking member resets, causing the locking component to drive the plugging plate to reset, thereby closing the storage cylinder. Step 4: When the next storage cylinder rotates above the feeding port, repeat Step 2 and Step 3 to drive this group of storage cylinders to discharge materials into the mixing cylinder. Step 5: Repeat the above steps 2, 3 and 4 to add the material in the storage barrel into the base asphalt in batches, and continue stirring with the stirring rod to obtain modified asphalt.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the shredded particles of plastic waste are used as a modifier, which can reduce the pollution of the plastic garbage dump environment and realize the paving of "green road". By utilizing the plastic waste, the cost of removal can be reduced and the production cost can be compressed; The heating tube surrounding the inner wall of the mixing drum works synchronously with the stirring rod to maintain the fluidity of the base asphalt and promote the full fusion of the modifier (rubber particles), stabilizer and rubber powder with the base asphalt; At the same time, by setting an intermittent rotating component and a feeding mechanism, during the continuous stirring of the stirring rod, the intermittent rotating component is used to drive the three groups of storage barrels to intermittently rotate, so that the three groups of storage barrels intermittently stay above the feed port, and during the rotation of the storage barrel, the feeding mechanism is used to cooperate with the trigger member set near the feed port to open the storage barrel, so that the three groups of storage barrels can be automatically fed into the mixing barrel in turn. Compared with the traditional feeding method, the ratio is high in accuracy, no manual intervention is required, and the performance and preparation efficiency of the modified asphalt can be effectively improved; In particular, when the intermittent rotating component drives the storage barrel to discharge materials, it can ensure that each material is mixed separately with the base asphalt in the mixing barrel, avoiding the agglomeration of materials caused by adding materials at one time, thereby improving the mixing uniformity of the materials and the base asphalt. At the same time, the forward and reverse stirring of the stirring rod can further improve the mixing uniformity of each material and the base asphalt, thereby improving the performance of the modified asphalt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a device for preparing rubber-modified asphalt by emulsifying plastic waste at low temperature.

[0017] Figure 2 This is a schematic diagram of the structure inside the mixing drum of a device for preparing rubber-modified asphalt by emulsifying plastic waste at low temperature.

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

[0019] Figure 4 This is a schematic diagram of the structure of the intermittent rotating components in the device for preparing rubber-modified asphalt by emulsifying plastic waste at low temperature.

[0020] Figure 5It is a schematic structural diagram of the intermittent structure in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

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

[0022] Figure 7 It is a schematic structural diagram of the turntable in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0023] Figure 8 It is a schematic structural diagram of the cooperation between the driving component and the triggering part in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0024] Figure 9 It is a schematic structural diagram of the cooperation between the plugging component and the storage barrel in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0025] Figure 10 It is a schematic structural diagram of the driving component in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0026] Figure 11 It is a schematic structural diagram of the plugging component in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0027] Figure 12 It is a schematic structural diagram of the locking component in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0028] Figure 13 It is a schematic structural diagram of the locking part in the device for preparing emulsified rubber modified asphalt at low temperature from plastic waste.

[0029] In the figure: 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, closed 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, plugging plate; 1501, discharge port; 16, driving gear; 17, rack plate; 1701, socket ring; 1702, clamping block; 1703, rubber washer; 18, slide bar; 19, first spring; 20, trigger block; 2001, first locking groove; 2002, second locking groove; 2003, first inclined surface; 2004, second inclined surface; 21, locking rod; 2101, protruding column; 22, plugging cylinder; 23, second spring; 24, guiding plate; 2401, second vertical groove; 2402, inclined groove; 25, slide rail; 26, first bevel gear set. Detailed implementation manners

[0030] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the drawings denote elements having the same or similar functions. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0031] The special term "exemplary" here means "serving as an example, embodiment or illustration". Any embodiment described as "exemplary" here does not necessarily have to be construed as superior or better than other embodiments.

[0032] In addition, for better illustration of the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can also be implemented without some specific details. In some instances, methods, means, and elements well known to those skilled in the art are not described in detail so as to highlight the gist of the present application.

[0033] Please refer to Figures 1 - 13 , in the embodiment of the present invention, a device for preparing emulsified rubber modified asphalt by low temperature of plastic waste includes: A lifting plate 3 and a feed inlet 101 provided on the mixing drum 1, a turntable 4 provided on the lifting plate 3, and a storage drum 2 provided on the turntable 4. Three groups of the storage drums 2 are equidistantly arranged along the circumferential direction of the turntable 4; Specifically, rubber powder, modifier and stabilizer are respectively contained in the above three groups of storage drums 2, and melted matrix asphalt is contained in the mixing drum 1.

[0034] Specifically, when preparing modified asphalt, first add the base asphalt into the mixing drum 1, and then add rubber powder, modifier and stabilizer into the base asphalt for stirring and mixing 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. The modified asphalt prepared from materials such as waste plastic bottles is used to lay a "green road surface" that takes into account environmental protection and performance, which not only extends the service life of the road but also reduces the environmental impact of waste plastics.

[0035] In the present invention, the plastic waste is shredded into particles and stored in one of the storage cylinders 2 for preparation use.

[0036] The turntable 4 is connected to the stirring rod 7 rotatably installed in the mixing drum 1 through 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 cylinder 2 is intermittently placed above the feed port 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 installed on the mixing drum 1. The driven gear 5 is connected to a driving rod 9 rotatably installed on the lifting plate 3 through a first bevel gear set 26. In detail, the above-mentioned 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, so as to mix and stir the base asphalt, stabilizer, modifier and rubber powder added into the mixing drum 1. And a surrounding heating pipe is arranged inside the barrel wall of the mixing drum 1. During the stirring process of the stirring rod 7, the heating pipe can heat the mixing drum 1 at the same time, so as to promote the mixing of the base asphalt with the stabilizer, modifier and rubber powder.

[0037] It should be particularly noted that the radius of the above-mentioned driven gear 5 is multiple times that of the main gear 6, so that when the stirring rod 7 rotates multiple circles, it can only drive the driven gear 5 to rotate one circle. And the above-mentioned 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. And the radius of the second bevel gear is multiple times that of the first bevel gear, so that when the first bevel gear rotates multiple circles following the driven gear 5, it can only drive the driving rod 9 to rotate one week. With the cooperation of the main gear 6, the driven gear 5 and the first bevel gear set 26, when the subsequent intermittent structure acts, the turntable 4 will drive the storage cylinder 2 to rotate slowly, thereby reducing the feeding frequency.

[0038] Furthermore, please refer to Figures 3 - 7, the 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 through a second bevel gear set 13. The transmission rod 14 is connected to the rotating shaft 401 of the turntable 4 through 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. First protrusions 1101 and second protrusions 1201 are respectively formed on the inner walls of the first sleeve 11 and the second sleeve 12. The first protrusions 1101 are slidably disposed in a composite groove opened on the side wall of the passive rod 10, and the second protrusions 1201 are slidably disposed in a closed groove 901 opened on the side wall of the active rod 9. Preferably, the above-mentioned 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 opened on the side wall of the passive rod 10. Three groups of the first vertical grooves 1001 are equidistantly arranged, and adjacent two groups of the first vertical grooves 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 is combined with the stroke end of the first vertical groove 1001. After the motor is started, the main gear 6 and the slave gear 5 enter the meshing transmission state, driving the slave gear 5 to rotate counterclockwise (combined with Figure 1 、 Figure 4 description). Subsequently, with the cooperation of the first bevel gear set 26, the slave gear 5 drives the active rod 9 to rotate counterclockwise.

[0039] During the process of the active rod 9 rotating counterclockwise for one circle, the closed groove 901 cooperates with the second protrusion 1201, which can drive the second sleeve 12 to drive the passive rod 10 to move along the axial direction of the active 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 matrix asphalt completely in a flowing state until the first protrusion 1101 contacts the spiral groove 1002. The first protrusion 1101 cooperates with the spiral groove 1002 to force the passive rod 10 to rotate counterclockwise. Immediately, with the cooperation of the second bevel gear set 13, the passive rod 10 drives the transmission rod 14 and the turntable 4 to rotate clockwise (combined with Figure 1 description). As the second sleeve 12 moves, the first protrusion 1101 will separate from the spiral groove 1002 and combine with the next first vertical groove 1001. At this time, the turntable 4 rotates 120 degrees, so that the next group of storage barrels 2 move above the feed port 101. During this process, the feeding mechanism on the storage barrel 2 cooperates with the trigger member arranged near the feed port 101 to open the storage barrel 2 of this group, so that the storage barrel 2 feeds one of rubber powder, modifier and stabilizer into the mixing barrel 1.

[0040] When the first protrusion 1101 moves along with the second sleeve 12, the first protrusion 1101 slides along the first vertical groove 1001. During this process, the storage barrel 2 remains continuously open and continuously feeds materials into the mixing barrel 1 until the first protrusion 1101 engages with the next spiral groove 1002. When the turntable 4 continues to rotate, the storage barrel 2 is closed. The subsequent process continues until the next group of storage barrels 2 move above the feed port 101, and then the feeding of the next material is carried out.

[0041] After repeating this three times, the three groups of storage barrels 2 sequentially feed rubber powder, modifier, and stabilizer into the mixing barrel 1, which can avoid the phenomenon of material agglomeration during one-time feeding. And after the three materials are fed, the second sleeve 12 moves to the end of the stroke of the driving rod 9. When the driving rod 9 continues to rotate subsequently, the second sleeve 12 moves in the reverse direction. During this process, the driven rod 10 drives the turntable 4 to rotate in the reverse direction under the cooperation of the composite groove. During the whole process, the feeding mechanism does not open any of the storage barrels 2, and only the stirring rod 7 continuously performs the stirring operation to completely mix the rubber powder, modifier, and stabilizer with the matrix asphalt. After the second sleeve 12 returns to the initial position, the motor stops. At this time, the modified asphalt is uniformly mixed between the materials stirred by the stirring rod 7 in the forward and reverse directions.

[0042] Specifically, 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 triggering member provided on the mixing barrel 1. When the storage barrel 2 rotates above the feed port 101, the triggering member cooperates with the driving component, which can drive the blocking component to act, thereby opening the storage barrel 2. And when the storage barrel 2 is separated from the feed port 101, the driving component resets, which can quickly close the storage barrel 2; The triggering member includes an arc-shaped toothed plate 8 provided on the mixing barrel 1. The arc-shaped toothed plate 8 cooperates with the driving component, which can drive the blocking component to quickly conduct or block the storage barrel 2; In particular, please refer to Figure 2 The above-mentioned arc-shaped toothed plate 8 is arranged near the feed port 101 and can cooperate with the driving component on the storage barrel 2 that moves above the feed port 101, thereby driving the blocking component to open the storage barrel 2 so that the storage barrel 2 feeds materials into the mixing barrel 1.

[0043] The driving component and the plugging component are arranged on the mounting plate 201 provided on the storage barrel 2. The driving component includes a driving gear 16 rotatably mounted on the mounting plate 201. The driving gear 16 meshes with a rack plate 17 slidably arranged on the mounting plate 201. A socket ring 1701 is arranged on the rack plate 17. The socket ring 1701 is slidably connected with a slide bar 18 arranged on the mounting plate 201. A first spring 19 is sleeved on the slide bar 18. One end of the first spring 19 abuts against the end of the slide bar 18, and the other end abuts against the socket ring 1701; Specifically, please refer to Figure 10 , the above-mentioned first spring 19 is always in a compressed state, pushing the rack plate 17 to have a tendency to move to the left. Therefore, in the initial state, only a small section on the right side of the rack plate 17 meshes with the driving gear 16.

[0044] Combined with the above, during the counterclockwise rotation of the turntable 4, when the storage barrel 2 approaches the feed port 101, the driving gear 16 is driven by the arc-shaped tooth plate 8 to rotate clockwise (combined with Figure 1 、 Figure 10 ), and then the driving gear 16 can drive 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 plugging component. When the turntable 4 stops, the plugging component can quickly act to open the storage barrel 2, so that the storage barrel 2 continuously feeds materials to the feed port 101; until the turntable 4 continues to rotate, the driving gear 16 is separated from the arc-shaped tooth plate 8. At this time, the first spring 19 releases elastic potential energy, driving the rack plate 17 to reset. During this process, the plugging component is triggered again, and the storage barrel 2 can be plugged, so that the storage barrel 2 rotates to the next position. When the storage barrel 2 rotates to the next position, the driving gear 16 on the next group of storage barrels 2 cooperates with the arc-shaped tooth plate 8 to open this group of storage barrels 2, and then another material is fed into the mixing barrel 1.

[0045] Furthermore, the plugging component includes a plugging plate 15 and a locking structure. The locking structure includes a plugging cylinder 22 arranged on the mounting plate 201. A locking rod 21 is slidably arranged in the plugging cylinder 22. A roller is rotatably mounted at one end of the locking rod 21 away from the plugging cylinder 22. A protruding column 2101 is arranged at the other end of the locking rod 21. The protruding column 2101 is cooperatively connected with the plugging plate 15. The roller cooperates with a locking member slidably arranged on the mounting plate 201; Specifically, please refer to Figures 11 - 13 , a second spring 23 is also sleeved on the above-mentioned locking rod 21. One end of the second spring 23 abuts against a limiting ring formed on the locking rod 21, and the other end abuts against the plugging cylinder 22. In particular, the above-mentioned second spring 23 is always in a compressed state, pushing the roller to contact the locking member.

[0046] The locking member includes a trigger block 20. A slide rail 25 is provided on one side of the trigger block 20 facing the mounting plate 201. A clamping block 1702 fixedly connected to the rack plate 17 is slidably arranged in the slide rail 25. And on one side of the trigger block 20 facing the insertion cylinder 22, a first locking groove 2001 and a second locking groove 2002 are provided. 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 blocking plate 15 is slidably arranged on the mounting plate 201 for blocking the storage cylinder 2. And a guiding plate 24 is provided on the blocking plate 15. A fitting groove is formed in the guiding plate 24. The fitting groove includes a second vertical groove 2401 and an inclined groove 2402 formed in the guiding plate 24; Specifically, please refer to Figure 12 、 Figure 13 , a blanking port 1501 is formed in the above-mentioned blocking plate 15. The blanking port 1501 is combined with the storage cylinder 2, and can open the storage cylinder 2 to enable the storage cylinder 2 to feed materials into the feed port 101. And the height of the first locking groove 2001 is lower than that of the second locking groove 2002. And a protrusion 2101 is provided on the locking rod 21. The protrusion 2101 is slidably arranged in the fitting groove. In the initial state, the clamping block 1702 abuts against the right side of the slide rail 25, the roller is combined with the second locking groove 2002, and the protrusion 2101 is located at the connection of the second vertical groove 2401 and the inclined groove 2402. At this time, the blocking plate 15 is in a state of blocking the storage cylinder 2 (described with Figure 1 as the standard).

[0047] Combined with the above, during the process of driving the gear 16 to rotate clockwise to drive the rack plate 17 to move towards the right (described with Figure 10 as the reference), during this process, the clamping block 1702 can drive the slide rail 25 and the trigger block 20 to move towards the right. (Corresponding to Figure 13 ), the roller is separated from the second locking groove 2002, and under the guidance of the second inclined surface 2004, the second spring 23 is further compressed. The locking rod 21 rises to drive the protrusion 2101 to slide along the second vertical groove 2401 until the turntable 4 stops rotating, and at this time, the rack plate 17 stops moving. At this time, the second inclined surface 2004 is separated from the roller and the first inclined surface 2003 contacts the roller. Immediately afterwards, the second spring 23 quickly releases the elastic potential energy to push the locking rod 21 to descend. The extrusion of 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 is combined with the first locking groove 2001.

[0048] When the above-mentioned 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 cooperates with the inclined groove 2402 to drive the guiding plate 24 to drive the blocking plate 15 to move towards the right, so that the material discharge port 1501 is combined with the storage cylinder 2, thereby opening the storage cylinder 2 to enable the storage cylinder 2 to feed materials into the mixing cylinder 1.

[0049] After a period of time, the turntable 4 continues to rotate clockwise, and the driving gear 16 is separated from the arc-shaped tooth plate 8. Immediately afterwards, the first spring 19 releases elastic potential energy to push the rack plate 17 to reset. During this process, the rack plate 17 can drive the trigger block 20 to move in the reverse direction. And during the reverse movement of the trigger block 20, the locking rod 21 cooperates with the trigger block 20, first rises and then descends rapidly. And during the rapid descent of the locking rod 21, the protrusion 2101 cooperates with the fitting groove to drive the blocking plate 15 to return to the state of blocking the storage cylinder 2, so that during the rotation of the storage cylinder 2, there will be no material leakage.

[0050] After repeating the above three times, three groups of materials are added into the mixing cylinder 1 at one time. Subsequently, the turntable 4 rotates in reverse. During the reverse rotation, the driving gear 16 meshes with the arc-shaped tooth plate 8 and rotates counterclockwise. During this process, since only a small section of the rack plate 17 meshes with the driving gear 16, therefore, the driving gear 16 can only drive the rack plate 17 to move a small distance towards the left. This distance is buffered by the rubber washer 1703 provided on the socket ring 1701. Therefore, during the reverse rotation, the storage cylinder 2 will not be opened, so that during the reverse rotation of the turntable 4, only the stirring rod 7 performs the stirring operation, thereby ensuring the full mixing of each material and then improving the performance of the modified asphalt.

[0051] Correspondingly, the present invention also proposes a device for preparing emulsified rubber modified asphalt by low temperature of plastic waste as described above, including the following steps: Step 1: In the initial state, all three groups 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 stirring rod 7. Subsequently, the stirring rod 7 drives the turntable 4 to rotate intermittently with the cooperation of the intermittent rotation assembly, so that each group of storage cylinders 2 can stop above the feed port 101 for a period of time. Step 2: When the storage cylinder 2 rotates above the feed port 101, the trigger member can drive the driving assembly to act, 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 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 guiding plate 24 to drive the blocking plate 15 to slide relative to the storage cylinder 2, thereby opening the storage cylinder 2 to enable the storage cylinder 2 to feed materials into the feed port 101. Step 3: When the turntable 4 continues to rotate, the driving assembly is separated from the triggering member. Immediately afterwards, the rack plate 17 quickly resets. During this process, the locking member resets, causing the locking assembly to drive the plugging plate 15 to reset, thereby closing the storage cylinder 2. Step 4: When the next group of storage cylinders 2 rotates above the feed port 101, repeat Step 2 and Step 3 to drive the group of storage cylinders 2 to feed materials into the mixing cylinder 1. Step 5: Repeat the above Step 2, Step 3, and Step 4, and the materials in the storage cylinder 2 can be added to the matrix asphalt in batches. With the continuous stirring of the stirring rod 7, the modified asphalt can be prepared.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0053] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard 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. An apparatus for preparing emulsified rubber modified asphalt at low temperature from plastic waste, characterized in that, Including: A lifting plate (3) and a feed inlet (101) provided on a mixing drum (1), a turntable (4) is provided on the lifting plate (3), and a storage cylinder (2) is provided on the turntable (4). Three groups of the storage cylinders (2) are equidistantly arranged along the circumferential direction of the turntable (4). The turntable (4) is connected to a stirring rod (7) rotatably installed in the mixing drum (1) through an intermittent rotation assembly. When the stirring rod (7) rotates, the intermittent rotation assembly can drive the turntable (4) to perform intermittent rotation so that the storage cylinder (2) is intermittently placed above the feed inlet (101). A blanking mechanism is provided on the storage cylinder (2). The blanking mechanism includes a blocking component and a driving component. The driving component cooperates with a triggering part provided on the mixing drum (1). When the storage cylinder (2) rotates to above the feed inlet (101), the triggering part cooperates with the driving component to drive the blocking component to act, thereby opening the storage cylinder (2). And when the storage cylinder (2) is separated from the feed inlet (101), the driving component resets to quickly close the storage cylinder (2).

2. The device for preparing emulsified rubber modified asphalt by low temperature of plastic waste according to claim 1, characterized in that, 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 installed on the mixing drum (1). The driven gear (5) is connected to a driving rod (9) rotatably installed on the lifting plate (3) through a first bevel gear set (26).

3. An apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature according to claim 2, characterized in that, The intermittent structure includes a driven rod (10) rotatably installed on the lifting plate (3). The driven rod (10) is connected to a transmission rod (14) rotatably installed on the lifting plate (3) through a second bevel gear set (13). The transmission rod (14) is connected to a rotating shaft (401) of the turntable (4) through a linkage belt. And a first sleeve (11) is sleeved on the driven rod (10). The first sleeve (11) is fixedly connected to a second sleeve (12) sleeved on the driving rod (9). First protrusions (1101) and second protrusions (1201) are respectively formed on the inner walls of the first sleeve (11) and the second sleeve (12). The first protrusion (1101) is slidably arranged in a composite groove opened on the side wall of the driven rod (10), and the second protrusion (1201) is slidably arranged in a closed groove (901) opened on the side wall of the driving rod (9).

4. An apparatus for preparing emulsified rubber modified asphalt by low-temperature treatment of plastic waste according to claim 3, characterized in that, The composite groove includes a first vertical groove (1001) opened on the side wall of the driven rod (10). Three groups of the first vertical grooves (1001) are equidistantly arranged, and adjacent two groups of the first vertical grooves (1001) are connected through a spiral groove (1002).

5. An apparatus for preparing emulsified rubber modified asphalt by using plastic waste at low temperature according to claim 2, characterized in that, The triggering part includes an arc-shaped toothed plate (8) provided on the mixing drum (1). The arc-shaped toothed plate (8) cooperates with the driving component to drive the blocking component to quickly conduct or block the storage cylinder (2).

6. The device for preparing emulsified rubber modified asphalt by using plastic waste at low temperature according to claim 2, wherein, The driving assembly and the plugging assembly are arranged on a mounting plate (201) provided 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 arranged on the mounting plate (201). A socket ring (1701) is arranged on the rack plate (17). The socket ring (1701) is slidably connected to a slide bar (18) arranged on the mounting plate (201). A first spring (19) is sleeved on the slide bar (18). One end of the first spring (19) abuts against the end of the slide bar (18), and the other end abuts against the socket ring (1701).

7. An apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature according to claim 6, characterized in that, The plugging assembly includes a plugging plate (15) and a locking structure. The locking structure includes a plugging cylinder (22) arranged on the mounting plate (201). A locking rod (21) is slidably arranged in the plugging cylinder (22). A roller is rotatably mounted at one end of the locking rod (21) away from the plugging cylinder (22). A protruding post (2101) is arranged at the other end of the locking rod (21). The protruding post (2101) is cooperatively connected with the plugging plate (15). The roller cooperates with a locking member slidably arranged on the mounting plate (201).

8. An apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature according to claim 7, characterized in that, The locking member includes a trigger block (20). A slide rail (25) is arranged on one side of the trigger block (20) facing the mounting plate (201). A clamping block (1702) fixedly connected to the rack plate (17) is slidably arranged in the slide rail (25). A first locking groove (2001) and a second locking groove (2002) are arranged on one side of the trigger block (20) facing the plugging 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).

9. An apparatus for preparing emulsified rubber modified asphalt from plastic waste at low temperature according to claim 7, characterized in that, The plugging plate (15) is slidably arranged on the mounting plate (201) for plugging the storage cylinder (2). A guiding plate (24) is arranged on the plugging plate (15). A fitting groove is formed on the guiding plate (24). The fitting groove includes a second vertical groove (2401) and an inclined groove (2402) formed on the guiding plate (24).

10. A preparation method of emulsified rubber modified asphalt by low-temperature treatment of plastic waste, characterized in that, The device for preparing emulsified rubber modified asphalt by low temperature of plastic waste according to claim 1 comprises the following steps: Step 1: In the initial state, all three storage cylinders (2) are in a plugged state. After adding an appropriate amount of melted matrix asphalt into the mixing cylinder (1), start the stirring rod (7). Subsequently, the stirring rod (7) drives the turntable (4) to rotate intermittently with the cooperation of the intermittent rotation assembly, so that each storage cylinder (2) can stop above the feed inlet (101) for a period of time. Step 2: When the storage barrel (2) rotates above the feed inlet (101), the triggering member can drive the driving assembly to act, 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. When the storage barrel (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 guiding plate (24) to drive the blocking plate (15) to slide relative to the storage barrel (2), thereby opening the storage barrel (2) so that the storage barrel (2) feeds materials to the feed inlet (101); Step 3: When the turntable (4) continues to rotate, the driving assembly is separated from the triggering member. Immediately afterwards, the rack plate (17) quickly resets. During this process, the locking member resets, causing the locking assembly to drive the blocking plate (15) to reset, thereby closing the storage barrel (2); Step 4: When the next group of storage barrels (2) rotates above the feed inlet (101), repeat Step 2 and Step 3 to drive the group of storage barrels (2) to feed materials into the mixing barrel (1); Step 5: Repeat the above Step 2, Step 3, and Step 4 in this way, and the materials in the storage barrel (2) can be added to the matrix asphalt in batches and cooperate with the continuous stirring of the stirring rod (7) to prepare the modified asphalt.

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