CN-117626750-B - Preparation method and equipment of stable rubber asphalt

CN117626750BCN 117626750 BCN117626750 BCN 117626750BCN-117626750-B

Abstract

The application provides a preparation method and equipment of stable rubber asphalt, which are characterized in that weighed matrix 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 ℃, and the improved mixing device at least comprises a material lifting unit for lifting materials at the bottom in the device to the upper part for fully mixing to obtain a rubber powder mixture. According to the preparation method of the stable rubber asphalt, the improved mixing device with the lifting of the materials is selected during material mixing, so that the materials in the mixing device are uniformly mixed up and down, the mixing efficiency and the product quality are improved, the materials in the mixing device are mixed up and down through the arranged tank body, the stirring piece, the lifting piece and the dispersing piece, the materials lifted to the top of the tank body are dispersed into the upper materials through the dispersing piece, the contact range between the materials is improved, and the mixing efficiency and the product quality are improved.

Inventors

QIN FENG
CHEN QILONG
CHEN SHUJING
ZHOU XUEXIANG
Lin Benhu
JIN WEIHUA
ZHANG LEI

Assignees

广西交建工程检测咨询有限公司
广西交通职业技术学院

Dates

Publication Date: 20260512
Application Date: 20240102

Claims (4)

1. The stable rubber asphalt preparation equipment is characterized in that the preparation equipment is an improved mixing device, the mixing device comprises a tank body (101), a sealing cover (201) is arranged on the tank body (101) in an adapting mode, a stirring piece for mixing materials, a lifting piece which is coaxial with the stirring piece and used for lifting the materials in the bottom of the tank body (101) to the top, and a dispersing piece which is arranged on the top of the lifting piece and used for dispersing the materials are arranged on the sealing cover (201), the dispersing piece comprises a dispersing bucket (501) which rotates along the lifting piece, a group of dispersing holes (502) are uniformly formed in the bottom of the dispersing bucket (501), and the dispersing bucket (501) is driven to rotate through an external driving piece; The stirring piece comprises a stirring tube shaft (301) and a plurality of stirring blades (302) arranged on the stirring tube shaft (301), the stirring tube shaft (301) rotates to be sleeved on a tube body (401), annular connecting seats (303) are respectively arranged at the top end of the stirring tube shaft (301) and the bottom of the dispersing hopper (501), and the two annular connecting seats (303) are fixed through a plurality of fasteners; A plurality of stirring shafts (506) are annularly and equidistantly arranged in the dispersing hopper (501), a plurality of stirring rods (507) are adaptively arranged on the stirring shafts (506), the inner ends of the stirring shafts (506) extend into the central pipe, a driving seat (404) is arranged on the pipe body (401), an annular groove (405) is formed in the driving seat (404), an annular gear ring (406) is arranged in the annular groove (405), and driven wheels (508) meshed with the annular gear ring (406) are arranged at the inner ends of the stirring shafts (506), wherein the dispersing holes (502) are positioned right below the stirring shafts (506); The bottom of the dispersing hopper (501) and the annular connecting seat (303) at the bottom of the dispersing hopper (501) are movably provided with extrusion pieces, each extrusion piece comprises an inner ring (602) sliding up and down along the annular connecting seat (303) and an outer ring (606) positioned at the outer edge bottom of the dispersing hopper (501), an extrusion block (601) corresponding to the corresponding capsule (509) is arranged between the inner ring (602) and the outer ring (606), convex rods (603) corresponding to the stirring shafts (506) are uniformly arranged at the outer sides of the outer rings (606), the outer ends of the stirring shafts (506) extend out of the dispersing hopper (501) and are provided with driving discs (604), and a connecting rod (605) is hinged between each driving disc (604) and each convex rod (603); the preparation method of the stable rubber asphalt comprises the following steps: S1, weighing 60-65% of matrix asphalt, 30-35% of rubber powder, 1-5% of additive, 1-3% of stabilizer and 1-10% of cosolvent according to the weight percentage, wherein the sum of the mass percentages of the components is 100%; S2, pouring the matrix asphalt and the rubber powder weighed in the step S1 into an improved mixing device for mixing, wherein the temperature in the improved mixing device is kept at 150+/-10 ℃, and the improved mixing device at least comprises a material lifting unit for lifting the materials at the bottom in the device to the upper part for fully mixing; s3, slowly adding the stabilizer into the improved mixing device, and continuously stirring, wherein the temperature is kept at 150 ℃ plus or minus 5 ℃; s4, taking a cosolvent, slowly adding the cosolvent into the improved mixing device, continuously stirring, and keeping the temperature at 150 ℃ plus or minus 5 ℃; S5, taking an additive, slowly adding the additive into the improved mixing device, continuously stirring, and keeping the temperature at 150 ℃ plus or minus 5 ℃ to obtain a rubber asphalt product; The improved mixing device in the step S2 at least comprises an electric heating module for heating and constant temperature of the mixing device.
2. The stable rubber asphalt preparation device according to claim 1, wherein the lifting part comprises a pipe body (401), the top of the pipe body (401) penetrates through and is fixed with the sealing cover (201), an auger (402) is installed in the pipe body (401), a power shaft (407) of the auger (402) extends out of the top end of the pipe body (401) and is driven by an external driving part, material circulation ports (403) are formed in the upper end and the lower end of the pipe body (401), a bucket cover (503) is detachably connected to the top of the dispersing bucket (501), a central pipe (504) is arranged in the middle of the dispersing bucket (501), the top of the central pipe (504) is rotated between the pipe body (401) and the sealing cover (201) and is driven by an external driving part, and a feeding port (505) corresponding to the material circulation port (403) at the top is formed in the middle of the central pipe.
3. The stable rubber asphalt preparation equipment according to claim 1, wherein the substrate asphalt raw material in the step S1 is required to be softened in an oven, and the temperature of the oven is controlled to be 150+/-10 ℃.
4. The stable rubber asphalt production equipment according to claim 1, wherein the rubber powder in the step S1 is devulcanized rubber powder, and the particle size of the rubber powder is 30-40 mesh.

Description

Preparation method and equipment of stable rubber asphalt Technical Field The invention relates to the field of rubber asphalt preparation, in particular to a method and equipment for preparing stable rubber asphalt. Background The rubber asphalt is formed by processing the raw materials of the waste tires into rubber particles, combining according to a certain coarse-fine grading proportion, adding various high polymer modifiers, and fully melting and expanding with matrix asphalt under the high-temperature condition of full mixing. The rubber asphalt has the performances of high-temperature stability, low-temperature flexibility, ageing resistance, fatigue resistance, water damage resistance and the like, is an ideal environment-friendly pavement material, and is mainly applied to stress absorbing layers and surface layers in road structures. When carrying out the stirring of material and mixing, current rubber asphalt mixing arrangement is inside often to setting up a stirring piece, is located the raw materials of mixing arrangement bottom and is difficult to promote to the top, carries out abundant upper and lower mixing, has reduced the efficiency of mixing. Therefore, the improvement is made by the inventor, and a preparation method and equipment of the stable rubber asphalt are provided. Disclosure of Invention The invention aims at solving the problems that when the existing rubber asphalt mixing device is used for stirring and mixing materials, a stirring piece is often arranged in the rubber asphalt mixing device, the raw materials at the bottom of the mixing device are difficult to lift to the top, and the rubber asphalt mixing device is fully mixed up and down, so that the mixing efficiency is reduced. In order to achieve the above object, the present invention provides the following method and apparatus for preparing a stable rubber asphalt, which improve the above problems. The application is specifically as follows: a preparation method of stable rubber asphalt comprises the following steps: S1, weighing 60-65% of matrix asphalt, 30-35% of rubber powder, 1-5% of additive, 1-3% of stabilizer and 1-10% of cosolvent according to the weight percentage, wherein the sum of the mass percentages of the components is 100%; S2, pouring the matrix asphalt and the rubber powder weighed in the step S1 into an improved mixing device for mixing, wherein the temperature in the improved mixing device is kept at 150+/-10 ℃, and the improved mixing device at least comprises a material lifting unit for lifting the materials at the bottom in the device to the upper part for fully mixing; s3, slowly adding the stabilizer into the improved mixing device, and continuously stirring, wherein the temperature is kept at 150 ℃ plus or minus 5 ℃; s4, taking a cosolvent, slowly adding the cosolvent into the improved mixing device, continuously stirring, and keeping the temperature at 150 ℃ plus or minus 5 ℃; S5, taking the additive, slowly adding the additive into the improved mixing device, continuously stirring, and keeping the temperature at 150 ℃ plus or minus 5 to obtain the rubber asphalt product. As a preferable technical scheme of the application, the substrate asphalt raw material in the step S1 needs to be softened in an oven at a temperature of 150+/-10 ℃ firstly. As a preferable technical scheme of the application, the rubber powder in the step S1 is desulfurization rubber powder, and the particle size of the rubber powder is 30-40 meshes. As a preferred technical solution of the present application, the improved mixing device in step S2 at least includes an electric heating module for heating and maintaining the temperature of the mixing device. The utility model provides a stable rubber asphalt preparation facilities, preparation facilities is improved generation mixing arrangement among the above-mentioned, mixing arrangement includes the jar body, the adaptation is provided with sealed lid on the jar body, sealed cover be provided with be used for mixing the stirring piece of material, with the coaxial setting of stirring piece and be used for lifting up the lifting means at top with the internal bottom material of jar to the lifting means and set up in the lifting means top and be used for dispersing the dispersing piece of material, the dispersing piece includes along the rotatory dispersion fill of lifting means, the bottom of dispersion fill evenly is provided with a set of dispersion hole, the dispersion fill is rotatory through external drive spare drive. According to the technical scheme, the lifting piece comprises a pipe body, the top of the pipe body penetrates through and is fixed with the sealing cover, an auger is arranged in the pipe body, a power shaft of the auger extends out of the top of the pipe body and is driven by an external driving piece, material circulation openings are formed in the upper end and the lower end of the pipe body, a bucket cover is detachably connected to the top of