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CN-121975338-A - Asphalt preparation process

CN121975338ACN 121975338 ACN121975338 ACN 121975338ACN-121975338-A

Abstract

The invention discloses an asphalt preparation process, relates to the technical field of asphalt preparation, and aims to solve the problem that liquefied rubber is inevitably contacted with stones, so that the stones are adhered inside a treatment device and the subsequent use of the treatment device is affected. The technical scheme is characterized by comprising the following steps of S1, collecting waste rubber, such as junked tires, rubber tubes and the like, S2, placing the collected rubber into a heating barrel, wherein a screening device and a processing device are arranged on the heating barrel, cutting the rubber through the screening device in the heating barrel to enable the rubber to be in a plurality of small blocks, screening stones mixed in the rubber, and processing the screened rubber into the processing device to obtain liquefied rubber. According to the invention, rubber and stones can be screened through the screening device, so that the stones are prevented from being influenced by liquefied rubber when the rubber is liquefied, and are adhered to the side wall of the heating barrel, and further, the subsequent use of the heating barrel is prevented from being influenced.

Inventors

  • SHI DEFEI
  • SHENG WEIHAO

Assignees

  • 义乌浩盛新材料有限公司

Dates

Publication Date
20260505
Application Date
20260119

Claims (8)

  1. 1. The asphalt preparation process is characterized by comprising the following steps of: S1, collecting waste rubber; S2, placing the collected rubber into a heating barrel (1), wherein a screening device and a processing device are arranged on the heating barrel (1), the rubber can be cut through the screening device in the heating barrel (1), so that the rubber is in a plurality of small blocks, stones mixed in the rubber are screened at the same time, the screened rubber can enter the processing device, the liquefied rubber is processed, and low-temperature ultrahigh-pressure water flow injection is carried out on the liquefied rubber, so that the liquefied rubber forms rubber powder; s3, adding the rubber powder and the surface activated rubber powder into a reaction kettle, and mixing the rubber powder and the surface activated rubber powder to form a raw material I; S4, mixing supercritical carbon dioxide and matrix asphalt, and placing the mixture into a heating barrel (1) for melting, dehydrating and swelling asphalt treatment to form a second raw material; s5, feeding the first raw material and the second raw material into a high-speed stirring emulsifying machine for mixing, so that the preparation of asphalt is completed.
  2. 2. The asphalt preparation process according to claim 1, wherein the screening device comprises a fixed box (2) fixedly connected to the inner wall of the heating barrel (1) and provided with an opening at the top, a through groove (3) communicated with the inside of the heating barrel (1) is formed in the side wall of the fixed box (2), a plurality of first rotating rods (4) and a plurality of second rotating rods (5) are rotatably connected in the fixed box (2), the first rotating rods (4) and the second rotating rods (5) are arranged in a mutually crossing manner, cutter discs (6) are fixedly connected to the first rotating rods (4) and the second rotating rods (5), a transmission assembly used for driving the first rotating rods (4) and the second rotating rods (5) to synchronously rotate is arranged on the fixed box (2), a filter screen (7) is slidably connected in the fixed box (2), a control assembly used for driving the filter screen (7) to move along the inside of the fixed box (2) and incline towards the direction of the through groove (3) is arranged in the fixed box (2), and a screening opening (8) is formed in the bottom of the fixed box (2).
  3. 3. The asphalt preparation process according to claim 2, wherein the transmission assembly comprises 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) respectively penetrate through the fixed box (2) and the protective shell (9), a first motor (10) is fixedly connected to the inner wall of the protective shell (9), the output end of the first motor (10) is fixedly connected with one rotating rod (4), two meshed gears (11) are fixedly connected to the first rotating rod (4), two meshed gears (12) are fixedly connected to the second rotating rod (5), and a transmission part for driving the gears (12) to rotate is arranged in the protective shell (9).
  4. 4. A process for preparing asphalt according to claim 3, wherein the transmission member comprises a connecting rod (13) rotatably connected in a protective housing (9), wherein the connecting rod (13) and one of the rotating rods (5) are fixedly connected with bevel gears (14) meshed with each other, and one of the rotating rods (4) and the connecting rod (13) are connected through a belt (15).
  5. 5. The asphalt preparation process according to claim 2, wherein the control assembly comprises a fixed ring (16) fixedly connected to the inner wall of the fixed box (2), the fixed ring (16) is connected with the filter screen (7) through springs (17), moving blocks (18) are rotatably connected to two sides of the filter screen (7), sliding grooves (19) for the moving blocks (18) to slide are formed in the inner wall of the fixed box (2), a fixed rod (20) is fixedly connected between the two moving blocks (18), the fixed rod (20) is connected with the bottom of the filter screen (7) through torsion springs (21), when the torsion springs (21) are in a natural state, the filter screen (7) is horizontally arranged, and limiting blocks (22) are fixedly connected in the fixed box (2).
  6. 6. The asphalt preparation process according to claim 2, wherein the opening of the fixed box (2) is fixedly connected with a material guide plate (23).
  7. 7. The asphalt preparation process according to claim 1, wherein the treatment device comprises a stirring plate (24) rotatably connected in the heating barrel (1), the stirring plate (24) and the heating barrel (1) are in contact with each other, a discharge hole (25) is formed in the bottom of the heating barrel (1), and a driving assembly for driving the stirring plate (24) to rotate is arranged on the heating barrel (1).
  8. 8. A process for preparing asphalt according to claim 7, wherein the driving assembly comprises a second motor (26) fixedly connected to the outside of the heating barrel (1), a ring gear (27) is fixedly connected to the stirring plate (24), a driving gear (28) is fixedly connected to the output end of the second motor (26), and the driving gear (28) and the ring gear (27) are meshed with each other.

Description

Asphalt preparation process Technical Field The invention relates to the technical field of asphalt preparation, in particular to an asphalt preparation process. Background Asphalt is used as one of common building materials and widely applied to infrastructure construction of roads, bridges, parking lots and the like, the common asphalt is mainly divided into three categories, namely coal tar asphalt, petroleum asphalt and natural asphalt, wherein raw materials for preparing the coal tar asphalt are rubber, such as waste rubber tires, rubber products and the like, and the coal tar asphalt is obtained by secondary recovery and refining of the rubber. The publication No. CN116333502A discloses a preparation process of asphalt, which comprises the following steps of placing waste tires into a treatment device, processing liquid rubber materials, spraying low-temperature ultrahigh-pressure water flow to the liquid rubber materials to finish the preparation of rubber powder, sequentially adding the rubber powder into a primary reaction kettle and a secondary production reactor, then mixing with surface activated rubber powder, mixing supercritical carbon dioxide and matrix asphalt into a microwave heating tank, melting, dehydrating and swelling the asphalt, and mixing the materials in the step two and the material in the step three into a high-speed stirring emulsifying machine to finish the preparation of asphalt. Above-mentioned technical scheme is when putting into processing apparatus with rubber, can heat rubber through processing apparatus to make rubber take place to liquefy, and metal wire and stone that mingles in rubber can take place the separation with rubber this moment, with this effect that realizes quick with rubber and stone mutual separation, further promotes coal tar pitch's preparation speed. However, when the rubber is liquefied, the rubber is liquefied and has certain viscosity, and the cobble and the liquefied rubber are positioned in the treatment device, so that the liquefied rubber is inevitably contacted with the cobble, and the cobble is adhered in the treatment device, so that the subsequent use of the treatment device is affected. There is therefore a need to propose a new solution to this problem. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide an asphalt preparation process, which solves the problems that the liquefied rubber is inevitably contacted with stones, so that the stones are adhered inside a treatment device and the subsequent use of the treatment device is affected. The technical aim of the invention is achieved by the following technical scheme that the asphalt preparation process comprises the following steps: S1, collecting waste rubber; S2, placing the collected rubber into a heating barrel, wherein a screening device and a processing device are arranged on the heating barrel, the rubber can be cut through the screening device in the heating barrel, so that the rubber is in a plurality of small blocks, stones mixed in the rubber are screened at the same time, the screened rubber can enter the processing device, the liquefied rubber is processed, and low-temperature and ultrahigh-pressure water flow injection is carried out on the liquefied rubber, so that the liquefied rubber forms rubber powder; s3, adding the rubber powder and the surface activated rubber powder into a reaction kettle, and mixing the rubber powder and the surface activated rubber powder to form a raw material I; s4, mixing supercritical carbon dioxide and matrix asphalt, and placing the mixture into a heating barrel for melting, dehydrating and swelling asphalt treatment to form a second raw material; s5, feeding the first raw material and the second raw material into a high-speed stirring emulsifying machine for mixing, so that the preparation of asphalt is completed. Through the technical scheme, when asphalt is prepared, rubber such as junked tires, rubber tubes and the like is collected, the rubber can be recycled, the environmental protection effect is improved, after the rubber is collected, the rubber is placed into a heating barrel, the rubber is cut into a plurality of small blocks through a screening device in the heating barrel, stones which are mixed in the rubber can be influenced by the screening device, the stones are separated from the rubber and screened, the screened rubber can enter a processing device, the rubber can be heated through the processing device, the rubber is processed into liquefied rubber and discharged from the heating barrel outwards, the discharged liquefied rubber can be sprayed through low-temperature ultrahigh-pressure water flow, the liquefied rubber is formed into rubber powder, the rubber powder is manufactured, the rubber and the stones can be separated from each other through the setting of the screening device, and sieving to avoid the influence of liquefied rubber on stone adhered to the side wal