A method and apparatus for preparing a stabilized rubber asphalt

Abstract

The application provides a stable rubber asphalt preparation method and equipment, wherein the weighed base asphalt and rubber powder are poured into an improved mixing device for mixing, the temperature in the improved mixing device is kept at 150±10 DEG C, and the improved mixing device further comprises at least one material lifting unit for lifting the material at the bottom of the device to the upper part for sufficient mixing to obtain a rubber powder mixture. The stable rubber asphalt preparation method can make the material in the mixing device uniformly mixed up and down, improve the mixing efficiency and the product quality, and through the tank body, the stirring part, the lifting part and the dispersing part, the material in the mixing device is mixed up and down, and the material lifted to the top of the tank body is dispersed into the upper material through the dispersing part, the contact range between the parts of the material is improved, and the mixing efficiency and the product quality are improved.

Description

Technical Field

[0001] This invention relates to the field of rubber asphalt preparation, and more specifically, to a method and equipment for preparing stable rubber asphalt. Background Technology

[0002] Rubberized asphalt is made by first processing waste tires into rubber powder, then combining them according to a certain coarse-fine gradation ratio, adding various high-polymer modifiers, and then fully mixing and reacting them with base asphalt under high temperature conditions. Rubberized asphalt has properties such as high-temperature stability, low-temperature flexibility, aging resistance, fatigue resistance, and water damage resistance, making it a relatively ideal environmentally friendly pavement material. It is mainly used in stress-absorbing layers and surface layers in road structures.

[0003] Existing rubber asphalt mixing equipment often only has one mixing element inside when mixing materials. The raw materials located at the bottom of the mixing equipment are difficult to lift to the top for thorough mixing, which reduces the mixing efficiency.

[0004] Therefore, we have made improvements to this and proposed a method and equipment for preparing stable rubber asphalt. Summary of the Invention

[0005] The purpose of this invention is to address the issue that existing rubber asphalt mixing devices often only have one mixing element inside, making it difficult for raw materials located at the bottom of the mixing device to be lifted to the top for thorough mixing, thus reducing mixing efficiency.

[0006] To achieve the above-mentioned objectives, the present invention provides a method and apparatus for preparing stable rubber asphalt, in order to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] A method for preparing stabilized rubber asphalt includes the following steps:

[0009] S1. Weigh each component according to the following weight ratio: 60-65% base asphalt, 30-35% rubber powder, 1-5% additives, 1-3% stabilizer, and 1-10% co-solvent. The sum of the mass percentages of the above components is 100%.

[0010] S2. Pour the base asphalt and rubber powder weighed in step S1 into the improved mixing device and mix them. The temperature inside the improved mixing device is maintained at 150±10℃. The improved mixing device also includes at least one material lifting unit, which is used to lift the material at the bottom of the device to the top for thorough mixing.

[0011] S3. Take the stabilizer and slowly add it to the improved mixing device, continue stirring, and keep the temperature at 150℃±5℃.

[0012] S4. Take the co-solvent and slowly add it to the improved mixing device, continue stirring, and keep the temperature at 150℃±5℃.

[0013] S5. Take the additive and slowly add it to the improved mixing device. Continue stirring and keep the temperature at 150℃±5 to obtain the rubber asphalt product.

[0014] As a preferred technical solution of this application, in step S1, the base asphalt raw material needs to be completely softened in an oven, and the temperature of the oven is controlled at 150±10℃.

[0015] As a preferred technical solution of this application, the rubber powder in step S1 is desulfurized rubber powder with a particle size of 30-40 mesh.

[0016] As a preferred technical solution of this application, the improved mixing device in step S2 includes at least one electric heating module for heating and maintaining the temperature of the mixing device.

[0017] A stabilized rubber asphalt preparation device is provided. The preparation device is an improved mixing device as described above. The mixing device includes a tank body with a sealing cover adapted to it. The sealing cover is provided with a stirring component for mixing materials, a lifting component coaxially arranged with the stirring component for lifting materials from the bottom of the tank body to the top, and a dispersing component arranged on the top of the lifting component for dispersing materials. The dispersing component includes a dispersing hopper that rotates along the lifting component. A set of dispersing holes is uniformly arranged at the bottom of the dispersing hopper. The dispersing hopper is driven to rotate by an external driving component.

[0018] As a preferred technical solution of this application, the lifting component includes a tube body, the top of which passes through and is fixed to the sealing cover. An auger is installed inside the tube body, and the power shaft of the auger extends out of the top of the tube body and is driven by an external drive component. Material flow ports are provided at both the upper and lower ends of the tube body. The top of the dispersing hopper is detachably connected to a hopper cover. The middle part of the dispersing hopper has a central tube component. The top of the central tube component rotates and is located between the tube body and the sealing cover and is driven by an external drive component. The middle part of the central tube has a feed port corresponding to the top material flow port.

[0019] As a preferred technical solution of this application, the stirring component includes a stirring tube shaft and a plurality of stirring blades disposed on the stirring tube shaft. The stirring tube shaft rotates to be sleeved on the tube body. The top end of the stirring tube shaft and the bottom end of the dispersing hopper are respectively provided with annular connecting seats, and the two annular connecting seats are fixed by a plurality of fasteners.

[0020] As a preferred technical solution of this application, a plurality of stirring shafts are installed in a ring at equal intervals inside the dispersion hopper. Several stirring rods are adapted to be provided on the stirring shafts. The inner end of the stirring shaft extends into the central tube. A drive seat is provided on the tube body. An annular groove is opened on the drive seat. An annular gear ring is installed in the annular groove. A driven wheel that meshes with the annular gear ring is installed on the inner end of the stirring shaft.

[0021] As a preferred technical solution of this application, the dispersion hole is located directly below the stirring shaft.

[0022] As a preferred technical solution of this application, a bladder is embedded at the bottom of the dispersion hopper and between two adjacent stirring shafts. An extrusion member is movably arranged on the annular connecting seat at the bottom of the dispersion hopper. The extrusion member includes an inner ring that slides up and down along the annular connecting seat and an outer ring located at the bottom of the outer edge of the dispersion hopper. An extrusion block corresponding to the bladder is arranged between the inner ring and the outer ring. A protrusion corresponding to the stirring shaft is evenly arranged on the outer side of the outer ring. The outer end of the stirring shaft extends out of the dispersion hopper and is equipped with a drive disc. A connecting rod is hinged between the drive disc and the protrusion.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] In the scheme of this application:

[0025] 1. A proposed method for preparing stable rubber asphalt utilizes an improved mixing device with a material lifting mechanism during material mixing. This allows for uniform mixing of materials within the mixing device, improving mixing efficiency and product quality.

[0026] 2. By setting up a tank, stirring components, lifting components, and dispersing components, the material in the mixing device is mixed from top to bottom. At the same time, the material lifted to the top of the tank is dispersed into the upper material by the dispersing components, which increases the contact range between different parts of the material, improves the mixing efficiency and the quality of the product.

[0027] 3. By setting multiple stirring shafts inside the dispersing hopper and multiple stirring rods on the stirring shafts, the rotation of the dispersing hopper drives the rotation of the stirring rod shafts, thereby re-stirring the material entering the dispersing hopper and further improving the efficiency of material mixing.

[0028] 4. Through the set bladder and extrusion component, the stirring shaft of the rotating shaft causes the pressure component to repeatedly extrude the bladder, causing the bladder to repeatedly tumble and extrude the material in the dispersion hopper, which can further improve the mixing efficiency and quality of the material in the dispersion hopper. Attached Figure Description

[0029] Figure 1 A schematic diagram illustrating a method for preparing a stabilized rubber asphalt provided in this application;

[0030] Figure 2 This is a front sectional view of a stabilized rubber asphalt preparation device provided in this application;

[0031] Figure 3 A schematic diagram of the sealing cover, stirring component, lifting component, and dispersing component of a stabilized rubber asphalt preparation device provided in this application;

[0032] Figure 4 A schematic diagram of the separation structure of the mixing component, lifting component, and dispersing component of a stabilized rubber asphalt preparation device provided in this application;

[0033] Figure 5 This application provides a schematic diagram of the structural separation of the dispersion component in a stabilized rubber asphalt preparation device.

[0034] Figure 6 This application provides a stabilized rubber asphalt preparation device. Figure 5 Enlarged view of point A;

[0035] Figure 7 This is a schematic diagram of the drive base and stirring shaft of a stable rubber asphalt preparation device provided in this application.

[0036] The image shows:

[0037] 101. Tank body; 201. Sealing cover; 301. Stirring tube shaft; 302. Stirring blade; 303. Annular connecting seat; 401. Tube body; 402. Screwdriver; 403. Material flow port; 404. Drive seat; 405. Annular groove; 406. Annular toothed ring; 407. Power shaft; 501. Dispersion hopper; 502. Dispersion hole; 503. Hopper cover; 504. Central fitting; 505. Feed inlet; 506. Stirring shaft; 507. Stirring rod; 508. Driven wheel; 509. Bladder body; 601. Extrusion block; 602. Inner ring; 603. Protruding rod; 604. Drive disc; 605. Connecting rod; 606. Outer ring. Detailed Implementation

[0038] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0039] As in the background art, existing rubber asphalt mixing devices often only have one mixing element inside when mixing materials. The raw materials located at the bottom of the mixing device are difficult to lift to the top for thorough mixing, which reduces the mixing efficiency.

[0040] To address this technical problem, the present invention provides a method and equipment for preparing stable rubber asphalt, which is applied to the rubber asphalt mixing and preparation process.

[0041] For details, please refer to Figure 1 A method for preparing stabilized rubber asphalt specifically includes:

[0042] S1. Weigh each component according to the following weight ratio: 60-65% base asphalt, 30-35% rubber powder, 1-5% additives, 1-3% stabilizer, and 1-10% co-solvent. The sum of the mass percentages of the above components is 100%.

[0043] S2. Pour the base asphalt and rubber powder weighed in step S1 into the improved mixing device and mix them. The temperature inside the improved mixing device is maintained at 150±10℃. The improved mixing device also includes at least one material lifting unit, which is used to lift the material at the bottom of the device to the top for thorough mixing.

[0044] S3. Take the stabilizer and slowly add it to the improved mixing device, continue stirring, and keep the temperature at 150℃±5℃.

[0045] S4. Take the co-solvent and slowly add it to the improved mixing device, continue stirring, and keep the temperature at 150℃±5℃.

[0046] S5. Take the additive and slowly add it to the improved mixing device. Continue stirring and keep the temperature at 150℃±5 to obtain the rubber asphalt product.

[0047] The base asphalt raw material needs to be softened completely in an oven, with the oven temperature controlled at 150±10℃.

[0048] The rubber powder is desulfurized rubber powder with a particle size of 30-40 mesh.

[0049] Among them, the improved mixing device includes at least one electric heating module for heating and maintaining the temperature of the mixing device, such as an electric heating stirring tank.

[0050] The proposed method for preparing stable rubber asphalt utilizes an improved mixing device with a material lifting mechanism during material mixing. This ensures uniform mixing of materials within the mixing device, thereby improving mixing efficiency and product quality.

[0051] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0052] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0053] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0054] Example 1

[0055] Please refer to Figures 2 to 4 A stabilized rubber asphalt preparation device, wherein the preparation device is the improved mixing device described above, the mixing device includes a tank 101, and a sealing cover 201 is adaptedly installed on the tank 101 (both the improved tank 101 and the sealing cover 201 are conventional electrically heated tank tubes, i.e., covers, such as...). Figure 2 As shown, it has a heating jacket for filling with the heating medium; the specific working mode will not be described in detail here.

[0056] Please refer to Figures 2 to 4 The sealing cover 201 is provided with a stirring component for mixing materials, a lifting component coaxially arranged with the stirring component for lifting the material at the bottom of the tank 101 to the top, and a dispersing component arranged on the top of the lifting component for dispersing materials. The dispersing component includes a dispersing hopper 501 that rotates along the lifting component. A set of dispersing holes 502 are evenly arranged at the bottom of the dispersing hopper 501. The dispersing hopper 501 is driven to rotate by an external driving component.

[0057] Please refer to Figures 2 to 4The lifting component includes a pipe body 401, the top of which passes through and is fixed to a sealing cover 201. An auger 402 is installed inside the pipe body 401, used to lift material from the bottom of the tank 101 into the dispersing hopper 501. The drive shaft 407 of the auger 402 extends from the top of the pipe body 401 and is driven by an external drive component. Material flow ports 403 are provided at both the upper and lower ends of the pipe body 401. The dispersing hopper 501 includes a detachable hopper cover 503 at its top. A central pipe component 504 is located in the middle of the dispersing hopper 501, the top of which rotates to be disposed on the pipe body 401. The tube body 401 is connected to the sealing cover 201 and driven by an external drive unit. Specifically, the tube body 401 is fixed by a U-shaped seat on the sealing cover 201 (not shown in the figure). The raised central tube 504 and the power shaft 407 of the auger 402 can be driven to rotate by a motor. The motor can be added to the sealing cover 201 (not shown in the figure). The central tube 504 has a feed port 505 in the middle that corresponds to the top material flow port 403. The range (number) of the feed ports 505 should be greater than the range of the top material flow port 403 to ensure the continuous entry of material into the dispersion hopper 501 during operation.

[0058] Please refer to Figures 2 to 4 The mixing component includes a mixing tube shaft 301 and multiple mixing blades 302 mounted on the mixing tube shaft 301. The mixing tube shaft 301 rotates and is sleeved on the tube body 401. The top end of the mixing tube shaft 301 and the bottom end of the dispersion hopper 501 are respectively provided with annular connecting seats 303. The two annular connecting seats 303 are fixed by several fasteners. During the rotation of the dispersion hopper 501, the mixing tube shaft 301 and the mixing blades 302 can be driven to rotate, mixing and stirring materials such as base asphalt and rubber powder. Here, the shaft of the mixing component is set as a tube, which is to facilitate the placement of the auger 402 in the middle of the tank body 101, that is, the material flow port 403 is located in the middle position of the bottom of the inner cavity of the tank body 101, so that materials from all directions can enter the auger 402 for lifting and dispersion.

[0059] By using the tank 101, stirring component, lifting component, and dispersing component, the material in the mixing device is mixed from top to bottom. At the same time, the material lifted to the top of the tank 101 is dispersed into the upper material by the dispersing component, which increases the contact range between different parts of the material, improves the mixing efficiency, and enhances the quality of the product.

[0060] Example 2

[0061] The stabilized rubber asphalt preparation equipment provided in Example 1 has been further optimized. For details, please refer to... Figures 3 to 7Multiple stirring shafts 506 are installed in a ring at equal intervals inside the dispersing hopper 501. Several stirring rods 507 are adapted to be installed on the stirring shafts 506. The inner end of the stirring shaft 506 extends into the central tube. A drive seat 404 is provided on the tube body 401. An annular groove 405 is opened on the drive seat 404. An annular gear ring 406 is installed in the annular groove 405. A driven wheel 508 that meshes with the annular gear ring 406 is installed on the inner end of the stirring shaft 506. During the rotation of the dispersing hopper 501, the material inside is thrown out from the dispersing hole 502 at the bottom. To improve the dispersion range of materials and enhance the efficiency and quality of mixing, during the rotation of the dispersion hopper 501, the driven wheel 508 at the inner end of its stirring shaft 506 is acted upon by the annular gear ring 406 and begins to rotate on its own axis as the dispersion hopper 501 rotates, thereby re-stirring the materials within the dispersion hopper 501 and further improving the quality and efficiency of the stirring. It should be noted that the dispersion hole 502 is located directly below the stirring shaft 506, meaning that the materials easily flow towards the stirring rod 507, allowing the stirring rod 507 to stir the materials.

[0062] Example 3

[0063] The stable rubber asphalt preparation equipment provided in Example 1 or 2 is further optimized. Specifically, considering that the material is affected by centrifugal force during the rotation of the dispersion hopper 501, the material has a relatively small range of movement with the stirring rod 507. Therefore, a bladder 509 is embedded at the bottom of the dispersion hopper 501 and between two adjacent stirring shafts 506. The bladder 509 repeatedly contracts and expands to squeeze the material and make it flow in the direction of the stirring rod 507.

[0064] For details, please refer to Figures 3 to 7At the bottom of the dispersion hopper 501, between two adjacent stirring shafts 506, there is an embedded bladder 509. The bladder 509 is elliptical in shape, made of heat-resistant material, and unaffected by the heat inside the tank 101. An extrusion member is movably mounted on the annular connecting seat 303 at the bottom of the dispersion hopper 501. The extrusion member includes an inner ring 602 that slides up and down along the annular connecting seat 303 and an outer ring 606 located at the bottom of the outer edge of the dispersion hopper 501. An extrusion block 601 corresponding to the bladder 509 is positioned between the inner ring 602 and the outer ring 606. The contact surface between the extrusion block 601 and the bladder 509 is a sloped surface with the outer side higher than the inner side, ensuring that when the bladder 509 is extruded by the extrusion block 601, the outer end of the bladder 509 is higher than the inner end, thus... When the material flows, it can also move inward, which is opposite to the centrifugal force and reduces the influence of centrifugal force on the material. The outer ring 606 is uniformly provided with protruding rods 603 corresponding to the stirring shaft 506. The outer end of the stirring shaft 506 extends out of the dispersion hopper 501 and is equipped with a drive disc 604. A connecting rod 605 is hinged between the drive disc 604 and the protruding rod 603. During the rotation of the stirring shaft 506, the drive disc 604 at the outer end rotates intermittently to drive the extrusion block 601 to move upward, so that the capsule 509 is repeatedly extruded. In turn, the capsule 509 extrudes the material inside, so that the material is extruded by the capsule 509 and dispersed to the stirring rods 507 on both sides, improving the stirring effect and the effect of the stirring rods 507 on the material.

[0065] The process of using the stabilized rubber asphalt preparation equipment provided by this invention is as follows:

[0066] The base asphalt and rubber powder are poured into the tank 101, and the sealing cap 201 is closed, ensuring a seal between the sealing cap 201 and the open end of the tank 101. The tank 101 is first heated using electric heating, maintaining a temperature of 150±10℃. An external drive unit rotates the central tube 504, causing it to rotate and drive the mixing shaft 301 and the mixing blades 302 to mix the base asphalt and rubber powder. Simultaneously, the external drive unit rotates the power shaft 407, activating the auger 402. During the mixing process within the tank 101, materials at the bottom enter the tube 401 through the bottom material flow port 403 and are conveyed to the top by the auger 402, beginning to enter the dispersing hopper 501. The dispersing hopper 501 rotates... During the process, the internal material is thrown out from the dispersion hole 502 at the bottom, increasing the dispersion range of the material and improving the mixing efficiency and quality. Correspondingly, during the rotation of the dispersion hopper 501, the driven wheel 508 at the inner end of its stirring shaft 506 is acted upon by the ring gear 406 and begins to rotate on its own axis while the dispersion hopper 501 rotates, which serves to re-stir the material inside the dispersion hopper 501, further improving the stirring quality and efficiency. During the rotation of the stirring shaft 506, the drive disc 604 at its outer end rotates intermittently, driving the extrusion block 601 to move upward, causing the capsule 509 to be repeatedly squeezed. In turn, the capsule 509 squeezes the material inside, causing the material to be dispersed to the stirring rods 507 on both sides by the pressure of the capsule 509, improving the stirring effect and the effect of the stirring rods 507 on the material.

[0067] After stirring for a period of time, take the stabilizer and slowly add it into the tank 101 through the feeding pipe on the tank 101. Continue stirring and keep the temperature at 150℃±5℃.

[0068] After stirring for a period of time, take the co-solvent and slowly add it into the tank 101 through the feeding pipe on the tank 101. Continue stirring and keep the temperature at 150℃±5℃.

[0069] After stirring for a period of time, take the additive and slowly add it into tank 101 through the feeding pipe on tank 101. Continue stirring and keep the temperature at 150℃±5℃ to finally obtain the rubber asphalt product.

[0070] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A stabilized rubber asphalt preparation device, characterized in that, The preparation equipment is an improved mixing device. The mixing device includes a tank (101), on which a sealing cover (201) is adapted. The sealing cover (201) is provided with a stirring component for mixing materials, a lifting component coaxially arranged with the stirring component and used to lift the material at the bottom of the tank (101) to the top, and a dispersing component arranged on the top of the lifting component and used to disperse the material. The dispersing component includes a dispersing hopper (501) rotating along the lifting component. A set of dispersing holes (502) are uniformly arranged at the bottom of the dispersing hopper (501). The dispersing hopper (501) is driven to rotate by an external driving component. The stirring component includes a stirring tube shaft (301) and a plurality of stirring blades (302) disposed on the stirring tube shaft (301). The stirring tube shaft (301) rotates to be sleeved on the tube body (401). The top end of the stirring tube shaft (301) and the bottom end of the dispersing hopper (501) are respectively provided with annular connecting seats (303). The two annular connecting seats (303) are fixed by a plurality of fasteners. The dispersing hopper (501) has multiple stirring shafts (506) installed in a ring at equal intervals. Each stirring shaft (506) has a number of stirring rods (507) adapted to it. The inner end of the stirring shaft (506) extends into the central tube. The tube body (401) is provided with a drive seat (404). The drive seat (404) has an annular groove (405). An annular gear ring (406) is installed in the annular groove (405). The inner end of the stirring shaft (506) is provided with a driven wheel (508) that meshes with the annular gear ring (406). The dispersing hole (502) is located directly below the stirring shaft (506). At the bottom of the dispersion hopper (501) and between two adjacent stirring shafts (506), a capsule (509) is embedded. An extrusion member is movably disposed on the annular connecting seat (303) at the bottom of the dispersion hopper (501). The extrusion member includes an inner ring (602) that slides up and down along the annular connecting seat (303) and an outer ring (606) located at the bottom of the outer edge of the dispersion hopper (501). An extrusion block (601) corresponding to the capsule (509) is disposed between the inner ring (602) and the outer ring (606). A protrusion (603) corresponding to the stirring shaft (506) is evenly disposed on the outer side of the outer ring (606). The outer end of the stirring shaft (506) extends out of the dispersion hopper (501) and is equipped with a drive disc (604). A connecting rod (605) is hinged between the drive disc (604) and the protrusion (603). The preparation method of stabilized rubber asphalt includes the following steps: S1. Weigh each component according to the following weight ratio: 60-65% base asphalt, 30-35% rubber powder, 1-5% additives, 1-3% stabilizer, and 1-10% co-solvent. The sum of the mass percentages of the above components is 100%. S2. Pour the base asphalt and rubber powder weighed in step S1 into the improved mixing device and mix them. The temperature inside the improved mixing device is maintained at 150±10℃. The improved mixing device also includes at least one material lifting unit, which is used to lift the material at the bottom of the device to the top for thorough mixing. S3. Take the stabilizer and slowly add it to the improved mixing device, continue stirring, and keep the temperature at 150℃±5℃. S4. Take the co-solvent and slowly add it to the improved mixing device, continue stirring, and keep the temperature at 150℃±5℃. S5. Take the additive and slowly add it to the improved mixing device. Continue stirring and keep the temperature at 150℃±5℃ to obtain the rubber asphalt product. The improved mixing device in step S2 includes at least one electric heating module for heating and maintaining the temperature of the mixing device.

2. The stabilized rubber asphalt preparation equipment according to claim 1, characterized in that, The lifting component includes a tube body (401), the top of which passes through and is fixed to a sealing cover (201). An auger (402) is installed inside the tube body (401). The power shaft (407) of the auger (402) extends out of the top of the tube body (401) and is driven by an external drive component. Material flow ports (403) are provided at both the upper and lower ends of the tube body (401). The top of the dispersing hopper (501) is detachably connected to a hopper cover (503). The middle part of the dispersing hopper (501) has a central tube component (504). The top of the central tube component (504) rotates between the tube body (401) and the sealing cover (201) and is driven by an external drive component. The middle part of the central tube has a feed port (505) corresponding to the top material flow port (403).

3. The stabilized rubber asphalt preparation equipment according to claim 1, characterized in that, In step S1, the base asphalt raw material needs to be completely softened in an oven, with the oven temperature controlled at 150±10℃.

4. The stabilized rubber asphalt preparation equipment according to claim 1, characterized in that, In step S1, the rubber powder is desulfurized rubber powder with a particle size of 30-40 mesh.

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