Asphalt preparation process

Abstract

The invention discloses an asphalt preparation process, relates to the technical field of asphalt preparation, and aims to solve the problems that liquefied rubber is inevitably in contact with stones, so that the stones are adhered to the interior of a treatment device, and the subsequent use of the treatment device is influenced. According to the technical scheme, the method is characterized by comprising the following steps that S1, waste rubber such as waste tires and rubber pipes is collected; s2, the collected rubber is put into a heating barrel, a screening device and a treatment device are arranged on the heating barrel, the rubber can be cut through the screening device in the heating barrel, the rubber is divided into a plurality of small blocks, meanwhile, stones mixed in the rubber are screened, the screened rubber can enter the treatment device, and liquefied rubber is processed. Rubber and stones can be screened through the screening device, the situation that when the rubber is liquefied, the stones are affected by liquefied rubber, the stones adhere to the side wall of the heating barrel, and then subsequent use of the heating barrel is not affected is avoided.

Description

Technical Field

[0001] This invention relates to the field of asphalt preparation technology, and more specifically, to an asphalt preparation process. Background Technology

[0002] As a common building material, asphalt is widely used in the construction of infrastructure such as roads, bridges, and parking lots. Common asphalt is mainly divided into three categories: coal tar pitch, petroleum asphalt, and natural asphalt. The raw material for coal tar pitch is rubber, such as waste rubber tires and rubber products. Coal tar pitch is obtained by recycling and refining the rubber.

[0003] CN116333502A discloses an asphalt preparation process, the technical solution of which includes the following steps: Step 1, waste tires are placed in a processing device to process liquid rubber material, and the liquid rubber material is subjected to low-temperature ultra-high pressure water jet spraying to complete the preparation of rubber powder; Step 2, the rubber powder is added to the primary reaction vessel and the secondary production reactor in sequence, and then mixed with surface-activated rubber powder; Step 3, supercritical carbon dioxide and matrix asphalt are mixed and placed in a microwave heating tank for melting, dehydration and swelling asphalt treatment; Step 4, the materials in Step 2 and Step 3 are mixed and placed in a high-speed stirring emulsifier to complete the preparation of asphalt.

[0004] The above-mentioned technical solution heats the rubber and liquefies it when it is placed in the processing device. At this time, the metal wires and stones mixed in with the rubber will separate from the rubber, thereby achieving the effect of quickly separating the rubber from the stones and further improving the preparation speed of coal tar pitch.

[0005] However, in the above-mentioned technical solution, when the rubber liquefies, the rubber itself will have a certain degree of stickiness after liquefaction, and since both the stones and the liquefied rubber are located inside the processing device, the liquefied rubber will inevitably come into contact with the stones, causing the stones to stick inside the processing device and affecting the subsequent use of the processing device.

[0006] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0007] To address the shortcomings of existing technologies, the present invention aims to provide an asphalt preparation process that solves the problem that liquefied rubber inevitably comes into contact with stones, causing the stones to stick inside the processing device and affecting its subsequent use.

[0008] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an asphalt preparation process, comprising the following steps: S1: Collect waste rubber; S2: The collected rubber is placed into a heating barrel, which is equipped with a sieving device and a processing device. The sieving device in the heating barrel can cut the rubber into several small pieces and sieve the stones mixed in with the rubber. The sieved rubber will enter the processing device to process liquefied rubber and spray the liquefied rubber with low temperature and ultra-high pressure water jet to form rubber powder. S3: Add the adhesive powder and the surface-activated adhesive powder into the reactor to mix them and form raw material one; S4: Supercritical carbon dioxide and base asphalt are mixed and placed in a heating tank for melting, dehydration and swelling asphalt treatment to form raw material two; S5: Feed raw material one and raw material two into a high-speed mixing emulsifier for mixing to complete the preparation of asphalt.

[0009] By adopting the above technical solution, rubber such as waste tires and rubber hoses can be collected during asphalt preparation, enabling the recycling and reuse of rubber and improving environmental protection. After the rubber is collected, it is placed in a heating tank, where a screening device inside the tank cuts it into small pieces. Simultaneously, stones mixed in with the rubber are separated from the rubber by the screening device, and the stones are screened. The screened rubber then enters a processing device where it is heated and liquefied, and discharged from the heating tank. The discharged liquefied rubber is then sprayed through a low-temperature, ultra-high-pressure water jet to form rubber powder, thus completing the production of rubber powder. The screening device effectively separates the rubber and stones, preventing the stones from being affected by the liquefaction process. The effect of rubber liquefaction causes the stones to adhere to the side wall of the heating tank, thus preventing it from affecting subsequent use. After the rubber is made into rubber powder, the rubber powder and surface-activated rubber powder are added to the reactor in a specified ratio and stirred together to form raw material one. Raw material one prepared in this way can improve the fatigue resistance and wear resistance of the rubber powder, while also reducing costs. Then, supercritical carbon dioxide and matrix asphalt are sent into the heating tank to mix the carbon dioxide and matrix asphalt together. After dehydration and swelling asphalt treatment, raw material two is obtained. Finally, raw material one and raw material two are sent to a high-speed stirring emulsifier for mixing to complete the asphalt production. During the asphalt production process, a screening device is set up to screen the stones and rubber before the rubber liquefaction, preventing the stones from adhering to the side wall of the heating tank and affecting its subsequent use.

[0010] The present invention is further configured such that: the screening device includes a fixed box fixedly connected to the inner wall of the heating barrel and having an opening at the top; the side wall of the fixed box has a through groove communicating with the interior of the heating barrel; a plurality of rotating rods one and a plurality of rotating rods two are rotatably connected inside the fixed box; the rotating rods one and two are arranged intersecting each other; a cutter disc is fixedly connected to each of the rotating rods one and two; the fixed box is provided with a transmission component for driving the rotating rods one and two to rotate synchronously; a filter screen is slidably connected inside the fixed box; a control component is provided inside the fixed box for driving the filter screen to move along the interior of the fixed box and tilt towards the through groove; and a screening port is opened at the bottom of the fixed box.

[0011] By adopting the above technical solution, when it is necessary to screen rubber and stones, the rubber is added into the fixed box through the opening. At the same time, the transmission component drives rotating rod one and rotating rod two to rotate, which in turn drives the cutter disc to rotate. At this time, the rubber will come into contact with the cutter disc, and the cutter disc on rotating rod one and rotating rod two can cut the rubber into several small pieces. Meanwhile, the stones mixed in with the rubber will be affected by the cutter disc and separated from the rubber. Then, the stones and rubber will be dragged above the filter screen. Since the volume of the stones is smaller than the volume of the cut rubber, the stones will fall out of the screening port at the bottom of the fixed box through the filter screen, thus achieving the effect of screening rubber and stones. After the rubber and stones are screened, the filter screen can be driven downward by the control component and tilted towards the through groove. At this time, the rubber on the filter screen is affected, causing the rubber to move towards the heating barrel and enter the heating barrel through the through groove, thus achieving the effect of screening rubber.

[0012] The present invention is further configured such that: the transmission assembly includes a protective shell fixedly connected to the outer wall of the fixed box; the first rotating rod and the second rotating rod respectively penetrate the fixed box into the protective shell; the inner wall of the protective shell is fixedly connected to a motor; the output end of the first motor is fixedly connected to one of the first rotating rods; two meshing gears are fixedly connected to the first rotating rod; a meshing gear is fixedly connected to the second rotating rod; and a transmission component for driving the gears to rotate is provided inside the protective shell.

[0013] By adopting the above technical solution, when driving rotating rod one and rotating rod two to rotate synchronously, motor one is started, and the output end of motor one drives one of the rotating rods to rotate. At the same time, the other rotating rod is driven to rotate through two meshing gears. Furthermore, through the setting of the transmission component, one of the rotating rods can be driven to rotate one of the rotating rods, and the other rotating rod can be driven to rotate through the meshing gears. This achieves the effect of driving rotating rod one and rotating rod two to rotate.

[0014] The present invention is further configured such that: the transmission component includes a connecting rod rotatably connected within the protective shell, and bevel gears meshing with each other are fixedly connected to the connecting rod and one of the rotating rods, wherein one of the rotating rods and the connecting rod are connected by a belt.

[0015] By adopting the above technical solution, when the rotating rod 2 is driven to rotate, the rotating rod 1 drives the connecting rod to rotate via a belt. At the same time, the connecting rod drives the bevel gear connected to it to rotate. The meshing of the two bevel gears can drive one of the rotating rods 2 to rotate, thereby achieving the effect of driving the rotating rod 2 to rotate.

[0016] The invention is further configured such that: the control component includes a fixed ring fixedly connected to the inner wall of the fixed box; the fixed ring and the filter screen are connected by a spring; movable blocks are rotatably connected to both sides of the filter screen; a sliding groove is provided on the inner wall of the fixed box for the movable blocks to slide; a fixed rod is fixedly connected between the two movable blocks; the fixed rod and the bottom of the filter screen are connected by a torsion spring; when the torsion spring is in its natural state, the filter screen is horizontally positioned; and a limit block is fixedly connected inside the fixed box.

[0017] By adopting the above technical solution, when the rubber falls onto the filter screen, it accumulates on the screen. At this time, the filter screen begins to move downwards under the weight of the rubber, causing the spring to deform and compress. Simultaneously, the filter screen also drives the moving block to move along the slide groove. The moving block can drive the fixed rod to move with the filter screen. When the filter screen moves to contact the top of the limiting block, the weight of the rubber continues to drive the filter screen downwards. At the same time, the filter screen is tilted towards the through groove due to the influence of the limiting block, causing the torsion spring to undergo elastic deformation. At this time, the rubber on the filter screen is affected by the tilt of the filter screen, driving the rubber to move into the heating barrel, thus achieving the effect of driving the rubber into the heating barrel. After the rubber enters the heating barrel, the filter screen loses the restraint of the rubber's weight, causing the torsion spring between the filter screen and the fixed rod to begin to deform and recover, driving the filter screen to rotate, making the filter screen horizontal. At the same time, the spring also loses its restraint, driving the spring back to its original position, thus achieving the effect of controlling the tilt of the filter screen while driving the filter screen to move.

[0018] The present invention is further configured such that a guide plate is fixedly connected to the opening of the fixed box.

[0019] By adopting the above technical solution, it is easy to pour rubber into the fixed box from the opening.

[0020] The present invention is further configured such that: the processing device includes a stirring plate rotatably connected inside a heating barrel, the stirring plate and the interior of the heating barrel are in contact with each other, the bottom of the heating barrel has a discharge port, and the heating barrel is provided with a driving component for driving the stirring plate to rotate.

[0021] By adopting the above technical solution, when the rubber enters the heating tank, the heating tank can heat the rubber and liquefy it. At the same time, the driving component drives the stirring plate to rotate, which can accelerate the melting speed of the rubber and improve work efficiency. After the rubber is completely melted, it can be discharged from the heating tank through the discharge port, thereby achieving the effect of processing the rubber. By setting the stirring plate and utilizing the contact between the stirring plate and the inside of the heating tank, the rubber adhering to the inner wall of the heating tank can be scraped off while stirring the rubber. This improves the collection effect after the rubber is liquefied and also avoids affecting the subsequent use of the heating tank.

[0022] The present invention is further configured such that: the driving component includes a second motor fixedly connected to the outside of the heating tank, a ring gear fixedly connected to the stirring plate, and a driving gear fixedly connected to the output end of the second motor, wherein the driving gear and the ring gear mesh with each other.

[0023] By adopting the above technical solution, when the stirring plate is driven to rotate, the second motor is started, and the output end of the second motor drives the drive gear to rotate. At the same time, the drive gear drives the ring gear to rotate, and the ring gear can drive the stirring plate to rotate, thereby achieving the effect of driving the stirring plate to rotate.

[0024] In summary, the present invention has the following beneficial effects: When preparing asphalt, rubber is placed in a heating tank, and a screening device inside the heating tank cuts the rubber into several small pieces. Simultaneously, stones mixed within the rubber are separated from the rubber, and the stones are screened. The screened rubber then enters a processing device, where it is heated and liquefied, and discharged from the heating tank. The discharged liquefied rubber is then sprayed through a low-temperature, ultra-high-pressure water jet to form rubber powder, thus completing the production of the rubber powder. The screening device effectively separates the rubber and stones, preventing the stones from being affected by the liquefied rubber during liquefaction and adhering to the side wall of the heating tank, thereby avoiding any impact on the subsequent use of the heating tank. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 4 This is an exploded view of the present invention.

[0026] In the diagram: 1. Heating tank; 2. Fixed box; 3. Through groove; 4. Rotating rod one; 5. Rotating rod two; 6. Cutter disc; 7. Filter screen; 8. Screening port; 9. Protective shell; 10. Motor one; 11. Gear one; 12. Gear two; 13. Connecting rod; 14. Bevel gear; 15. Belt; 16. Fixed ring; 17. Spring; 18. Moving block; 19. Slide groove; 20. Fixed rod; 21. Torsion spring; 22. Limiting block; 23. Guide plate; 24. Stirring plate; 25. Discharge port; 26. Motor two; 27. Ring gear; 28. Drive gear. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0028] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] An asphalt preparation process, such as Figures 1-4 As shown, it includes the following steps: S1: Collect waste rubber, such as waste tires and rubber hoses; S2: The collected rubber is placed into the heating tank 1. The heating tank 1 is equipped with a screening device and a processing device. The screening device in the heating tank 1 can cut the rubber into several small pieces. At the same time, the stones mixed in with the rubber are screened out. The screened rubber will enter the processing device to process liquefied rubber. The liquefied rubber is then sprayed with low temperature and ultra-high pressure water jet to form rubber powder. S3: Add the adhesive powder and the surface-activated adhesive powder into the reactor to mix them and form raw material one; S4: Supercritical carbon dioxide and base asphalt are mixed and placed in heating tank 1 for melting, dehydration and swelling asphalt treatment to form raw material two; S5: Feed raw material one and raw material two into a high-speed mixing emulsifier for mixing to complete the preparation of asphalt.

[0031] In the preparation of asphalt, rubber materials such as waste tires and rubber hoses are collected for recycling and reuse, improving environmental protection. After collection, the rubber is placed in a heating tank 1, where a screening device cuts it into small pieces. Simultaneously, stones mixed within the rubber are separated from the rubber by the screening device, and the stones are then screened. The screened rubber then enters a processing unit where it is heated and liquefied, exiting the heating tank 1. The liquefied rubber is then sprayed through a low-temperature, ultra-high-pressure water jet to form rubber powder, thus completing the production of rubber powder. The screening device effectively separates the rubber and stones, preventing the stones from being affected by the liquefied rubber during liquefaction. This process ensures that the stones adhere to the side wall of heating tank 1, thus preventing it from affecting subsequent use. After the rubber is made into rubber powder, the rubber powder and surface-activated rubber powder are added to the reactor in a specified ratio and stirred together to form raw material one. Raw material one prepared in this way can improve the fatigue resistance and wear resistance of the rubber powder, while also reducing costs. Subsequently, supercritical carbon dioxide and matrix asphalt are fed into heating tank 1 to mix the carbon dioxide and matrix asphalt. After dehydration and swelling asphalt treatment, raw material two is obtained. Finally, raw material one and raw material two are fed into a high-speed stirring emulsifier for mixing, thus completing the asphalt production. During the asphalt production process, the stones and rubber are screened before the rubber liquefies, preventing the stones from adhering to the side wall of heating tank 1 and affecting its subsequent use.

[0032] like Figures 1-4 As shown, the screening device includes a fixed box 2 fixedly connected to the inner wall of the heating barrel 1 and having an opening at the top. The side wall of the fixed box 2 has a through groove 3 that communicates with the inside of the heating barrel 1. Several rotating rods 4 and several rotating rods 5 are rotatably connected inside the fixed box 2. The rotating rods 4 and 5 are arranged intersecting each other. A cutter disc 6 is fixedly connected to each of the rotating rods 4 and 5. The fixed box 2 is provided with a transmission component for driving the rotating rods 4 and 5 to rotate synchronously. A filter screen 7 is slidably connected inside the fixed box 2. The fixed box 2 is provided with a control component for driving the filter screen 7 to move along the inside of the fixed box 2 and tilt towards the through groove 3. A screening port 8 is opened at the bottom of the fixed box 2.

[0033] When it is necessary to screen rubber and pebbles, the rubber is added into the fixed box 2 through the opening. At the same time, the transmission component drives the rotating rod 4 and the rotating rod 5 to rotate, which in turn drives the cutter disc 6 to rotate. At this time, the rubber will come into contact with the cutter disc 6. The cutter disc 6 on the rotating rod 4 and the rotating rod 5 can cut the rubber into several small pieces. At the same time, the pebbles mixed in with the rubber will be affected by the cutter disc 6 and separated from the rubber. Then the pebbles and rubber will be dragged above the filter screen 7. Since the volume of the pebbles is smaller than the volume of the cut rubber, the pebbles will fall out of the screening port 8 at the bottom of the fixed box 2 through the filter screen 7, thus achieving the effect of screening rubber and pebbles. After the rubber and pebbles are screened, the filter screen 7 can be driven to move downward and tilt towards the through groove 3 through the control component. At this time, the rubber on the filter screen 7 is affected, causing the rubber to move towards the heating barrel 1 and enter the heating barrel 1 through the through groove 3, thus achieving the effect of screening rubber.

[0034] like Figures 2-4 As shown, the transmission assembly includes a protective shell 9 fixedly connected to the outer wall of the fixed box 2. Rotating rod 1 4 and rotating rod 2 5 respectively penetrate the fixed box 2 into the protective shell 9. A motor 10 is fixedly connected to the inner wall of the protective shell 9. The output end of the motor 10 is fixedly connected to one of the rotating rods 1 4. Two meshing gears 11 are fixedly connected to the rotating rod 1 4, and a meshing gear 2 12 is fixedly connected to the rotating rod 2 5. The protective shell 9 contains a transmission component for driving the gear 2 12 to rotate. The transmission component includes a connecting rod 13 rotatably connected to the protective shell 9. A meshing bevel gear 14 is fixedly connected to the connecting rod 13 and one of the rotating rods 2 5. The rotating rod 1 4 and the connecting rod 13... The two rotating rods are connected by a belt 15. When the rotating rod 4 and the rotating rod 5 rotate synchronously, the motor 10 is started. The output of the motor 10 drives one of the rotating rods 4 to rotate. At the same time, the other rotating rod 4 is driven to rotate through two meshing gears 11. The rotating rod 4 drives the connecting rod 13 to rotate through the belt 15. The connecting rod 13 drives the bevel gear 14 connected to it to rotate. The meshing of the two bevel gears 14 drives one of the rotating rods 5 to rotate. The meshing of the two bevel gears 12 drives the other rotating rod 5 to rotate. This achieves the effect of driving the rotating rods 4 and 5 to rotate.

[0035] like Figures 1-3As shown, the control assembly includes a fixed ring 16 fixedly connected to the inner wall of the fixed box 2. The fixed ring 16 and the filter screen 7 are connected by a spring 17. Movable blocks 18 are rotatably connected to both sides of the filter screen 7. The inner wall of the fixed box 2 has a sliding groove 19 for the movable blocks 18 to slide. A fixed rod 20 is fixedly connected between the two movable blocks 18. The fixed rod 20 and the bottom of the filter screen 7 are connected by a torsion spring 21. When the torsion spring 21 is in its natural state, the filter screen 7 is horizontally set. A limit block 22 is fixedly connected inside the fixed box 2. When the rubber falls onto the filter screen 7, the rubber will accumulate on the filter screen 7. At this time, the filter screen 7 begins to move downward under the gravity applied by the rubber, which drives the spring 17 to deform and compress. At the same time, the filter screen 7 will also drive the movable blocks 18 to move along the sliding groove 19. The movable blocks 18 can drive the fixed rod 20 to follow the filter screen. 7. When the filter screen 7 moves to contact the top of the limiting block 22, the weight of the rubber continues to drive the filter screen 7 downward. At the same time, the filter screen 7 is tilted towards the through groove 3 due to the influence of the limiting block 22, and the torsion spring 21 is elastically deformed. At this time, the rubber on the filter screen 7 is driven to move into the heating barrel 1 due to the tilt of the filter screen 7. This achieves the effect of driving the rubber into the heating barrel 1. After the rubber enters the heating barrel 1, the filter screen 7 loses the restriction of the weight of the rubber, and the torsion spring 21 between the filter screen 7 and the fixed rod 20 begins to deform and recover, and drives the filter screen 7 to rotate, so that the filter screen 7 is set horizontally. At the same time, the spring 17 also loses its restriction and drives the spring 17 back to its original position. This achieves the effect of controlling the tilt of the filter screen 7 while driving the filter screen 7 to move.

[0036] like Figures 1-4As shown, the processing device includes a stirring plate 24 rotatably connected inside a heating tank 1. The stirring plate 24 and the interior of the heating tank 1 are in contact with each other. A discharge port 25 is opened at the bottom of the heating tank 1. The heating tank 1 is equipped with a drive assembly for driving the stirring plate 24 to rotate. The drive assembly includes a second motor 26 fixedly connected to the outside of the heating tank 1. A ring gear 27 is fixedly connected to the stirring plate 24. A drive gear 28 is fixedly connected to the output end of the second motor 26. The drive gear 28 and the ring gear 27 mesh with each other. When the rubber enters the heating tank 1, the heating tank 1 can heat the rubber and cause it to liquefy. At the same time, the second motor 26 is started, driving the output end of the second motor 26 to rotate. The drive gear 28 rotates, which in turn drives the ring gear 27 to rotate. The ring gear 27 then drives the stirring plate 24 to rotate, which accelerates the melting speed of the rubber and improves work efficiency. After the rubber is completely melted, it can be discharged from the heating tank 1 through the discharge port 25, thus achieving the effect of processing the rubber. By setting the stirring plate 24 and its contact with the inside of the heating tank 1, the rubber adhering to the inner wall of the heating tank 1 can be scraped off while stirring the rubber. This improves the collection effect after the rubber liquefies and avoids affecting the subsequent use of the heating tank 1.

[0037] like Figures 1-4 As shown, a guide plate 23 is fixedly connected to the opening of the fixed box 2, which facilitates the pouring of rubber from the opening into the fixed box 2.

[0038] The working principle of this invention is as follows: When producing asphalt, rubber is added into the fixed box 2 through the opening. Simultaneously, motor 10 is started, driving the output end of motor 10 to rotate one of the rotating rods 4. At the same time, two meshing gears 11 drive another rotating rod 4 to rotate. Rotating rod 4, via belt 15, drives connecting rod 13 to rotate. Connecting rod 13, in turn, drives bevel gear 14 connected to it to rotate. The meshing of the two bevel gears 14 drives one rotating rod 5 to rotate, which, via meshing gear 12, drives another rotating rod 5 to rotate. Simultaneously, rotating rods 4 and 5 drive the cutter head 6 to rotate. At this time, the rubber will come into contact with the cutter disc 6. By rotating the first rod 4 and the second rod 5, the cutter disc 6 can cut the rubber into several small pieces. At the same time, the stones mixed in with the rubber will be affected by the cutter disc 6 and separated from the rubber. Then the stones and rubber will be dragged into the filter screen 7. Since the volume of the stones is smaller than the volume of the cut rubber, the stones will fall out through the filter screen 7 from the screening port 8 at the bottom of the fixed box 2. This achieves the effect of screening the rubber and stones. It can separate the rubber and stones before the rubber liquefies and screen them to avoid the stones being affected by the liquefied rubber during the rubber liquefaction process, causing the stones to stick to the side wall of the heating tank 1, thereby avoiding affecting the subsequent use of the heating tank 1.

[0039] After the rubber and stones are screened, the rubber falls onto the filter screen 7. The weight of the rubber continues to drive the filter screen 7 downward. At the same time, the filter screen 7 is tilted towards the channel 3 due to the influence of the limiting block 22, which causes the torsion spring 21 to undergo elastic deformation. At this time, the rubber on the filter screen 7 is driven to move into the heating barrel 1 due to the tilt of the filter screen 7, and enters the heating barrel 1 through the channel 3, thereby achieving the effect of conveying the rubber into the heating barrel 1.

[0040] When the rubber enters the heating tank 1, the heating tank 1 heats the rubber and causes it to liquefy. At the same time, the second motor 26 is started, which drives the output end of the second motor 26 to rotate the drive gear 28. The drive gear 28 drives the ring gear 27 to rotate, which in turn drives the stirring plate 24 to rotate. The stirring plate 24 accelerates the melting speed of the rubber and improves the working efficiency. After the rubber is completely melted, it can be discharged from the heating tank 1 through the discharge port 25, thereby achieving the effect of processing the rubber.

[0041] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An asphalt preparation process, characterized in that, Includes the following steps: S1: Collect waste rubber; S2: The collected rubber is placed into the heating barrel (1). The heating barrel (1) is equipped with a sieving device and a processing device. The rubber can be cut into several small pieces by the sieving device in the heating barrel (1). At the same time, the stones mixed in with the rubber are sieved. The sieved rubber will enter the processing device to process liquefied rubber. The liquefied rubber is sprayed with low temperature and high pressure water jet to form rubber powder. S3: Add the adhesive powder and the surface-activated adhesive powder into the reactor to mix them and form raw material one; S4: Supercritical carbon dioxide and base asphalt are mixed and placed in a heating tank (1) for melting, dehydration and swelling asphalt treatment to form raw material two; S5: Feed raw material one and raw material two into a high-speed mixing emulsifier for mixing to complete the preparation of asphalt.

2. The asphalt preparation process according to claim 1, characterized in that: The screening device includes a fixed box (2) fixedly connected to the inner wall of the heating barrel (1) and having an opening at the top. The side wall of the fixed box (2) has a through groove (3) that communicates with the inside of the heating barrel (1). Several rotating rods (4) and several rotating rods (5) are rotatably connected inside the fixed box (2). The rotating rods (4) and rotating rods (5) are arranged in a crisscross pattern. A cutter disc (6) is fixedly connected to each of the rotating rods (4) and rotating rods (5). The fixed box (2) is provided with a transmission component for driving the rotating rods (4) and rotating rods (5) to rotate synchronously. A filter screen (7) is slidably connected inside the fixed box (2). The fixed box (2) is provided with a control component for driving the filter screen (7) to move along the inside of the fixed box (2) and tilt towards the through groove (3). A screening port (8) is opened at the bottom of the fixed box (2).

3. The asphalt preparation process according to claim 2, characterized in that: The transmission assembly includes a protective shell (9) fixedly connected to the outer wall of the fixed box (2). The first rotating rod (4) and the second rotating rod (5) pass through the fixed box (2) and into the protective shell (9). The inner wall of the protective shell (9) is fixedly connected to a motor (10). The output end of the motor (10) is fixedly connected to one of the rotating rods (4). Two meshing gears (11) are fixedly connected to the first rotating rod (4). Two meshing gears (12) are fixedly connected to the second rotating rod (5). The protective shell (9) is provided with a transmission component for driving the second gear (12) to rotate.

4. The asphalt preparation process according to claim 3, characterized in that: The transmission component includes a connecting rod (13) rotatably connected inside the protective shell (9). The connecting rod (13) and one of the rotating rods (5) are fixedly connected with meshing bevel gears (14). One of the rotating rods (4) and the connecting rod (13) are connected by a belt (15).

5. The asphalt preparation process according to claim 2, characterized in that: The control component includes a fixed ring (16) fixedly connected to the inner wall of the fixed box (2). The fixed ring (16) and the filter screen (7) are connected by a spring (17). The filter screen (7) is rotatably connected to both sides by moving blocks (18). The inner wall of the fixed box (2) is provided with a sliding groove (19) for the moving blocks (18) to slide. A fixed rod (20) is fixedly connected between the two moving blocks (18). The fixed rod (20) and the bottom of the filter screen (7) are connected by a torsion spring (21). When the torsion spring (21) is in its natural state, the filter screen (7) is horizontally set. A limit block (22) is fixedly connected inside the fixed box (2).

6. The asphalt preparation process according to claim 2, characterized in that: A guide plate (23) is fixedly connected to the opening of the fixed box (2).

7. The asphalt preparation process according to claim 1, characterized in that: The processing device includes a stirring plate (24) rotatably connected inside the heating barrel (1), the stirring plate (24) and the interior of the heating barrel (1) are in contact with each other, the bottom of the heating barrel (1) has a discharge port (25), and the heating barrel (1) is provided with a drive assembly for driving the stirring plate (24) to rotate.

8. The asphalt preparation process according to claim 7, characterized in that: The drive assembly includes a second motor (26) fixedly connected to the outside of the heating tank (1), a ring gear (27) fixedly connected to the stirring plate (24), and a drive gear (28) fixedly connected to the output end of the second motor (26). The drive gear (28) and the ring gear (27) mesh with each other.

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