Thermal insulation stirring device for high-performance modified asphalt

Abstract

The utility model relates to the technical field of asphalt processing, and discloses a heat-preservation stirring device for high-performance modified asphalt, which comprises a tank body, a tank cover is arranged at the top of the tank body, and a stirring mechanism positioned in an inner cavity of the tank body is mounted below the tank cover; the stirring mechanism comprises a motor, a rotating main shaft, a stirring piece, a spiral lifting blade and an anti-sinking piece; the motor is mounted in the middle of the upper surface of the tank cover; through cooperation of the tank body and the stirring mechanism, axial circulation of asphalt materials can be forced through the spiral lifting blades, layering of the asphalt materials is avoided, uniform mixing of aggregate and asphalt is ensured, and meanwhile under the action of the stirring piece and the anti-settling piece, the stirring piece conducts shearing modification on the asphalt, promotes the dispersion effect of the asphalt and uniformly disperses rubber particles; and meanwhile, aggregate in the asphalt can be prevented from being accumulated at the bottom by the anti-settling piece, so that the production quality of the high-performance modified asphalt is improved.

Description

Technical Field

[0001] This utility model relates to the field of asphalt processing technology, specifically to a heat-insulating mixing device for high-performance modified asphalt. Background Technology

[0002] Asphalt is a dark brown, complex mixture composed of hydrocarbons of different molecular weights and their non-metallic derivatives. It is a type of high-viscosity organic liquid, often existing in liquid or semi-solid petroleum form. It has a black surface and is soluble in carbon disulfide and carbon tetrachloride. Asphalt is a waterproof, moisture-proof, and corrosion-resistant organic cementing material. Asphalt can be mainly divided into three types: coal tar pitch, petroleum asphalt, and natural asphalt. Coal tar pitch is a byproduct of coking, petroleum asphalt is the residue after crude oil distillation, and natural asphalt is stored underground, sometimes forming mineral layers or accumulating on the earth's crust. Asphalt is mainly used in industries such as coatings, plastics, and rubber, as well as for road paving. When using asphalt, a mixing device is needed to stir it to prevent it from solidifying.

[0003] In the prior art, Chinese utility model application number CN202222661271.4 discloses an asphalt mixing device with heat preservation function, including a mixing tank. The mixing tank has a rotating shaft rotatably connected to its interior via bearings. A mixing paddle is detachably connected to the outside of the rotating shaft. The mixing paddle has a cavity inside, and a heating wire is installed inside the cavity. A top cover is detachably connected to the upper end face of the mixing tank. A speed reducer is installed on the upper end face of the top cover. A motor is installed on the upper end face of the speed reducer. The output shaft of the motor is connected to the rotating shaft via the speed reducer. A temperature sensor is installed on the inner wall of the mixing tank. A heat preservation sleeve is fitted onto the outer side of the mixing tank.

[0004] While the above-mentioned technical solution has a certain heat preservation effect, its function of simply stirring the modified asphalt with a stirring rod is limited. Due to the high viscosity of the modified asphalt, the shear force on the asphalt is insufficient, making it difficult to break up asphalt agglomerates and disperse additives. At the same time, due to the high viscosity of the asphalt, it lacks an axial mixing structure, which makes the material prone to stratification, with coarse aggregate sinking and asphalt floating. Therefore, we need to propose a heat preservation and stirring device for high-performance modified asphalt. Utility Model Content

[0005] The purpose of this invention is to provide a heat-insulating mixing device for high-performance modified asphalt. By designing a combined mixing structure, it can promote the axial flow of asphalt and perform shear mixing on the asphalt in the tank, accelerate the dispersion efficiency of additives in the asphalt, and facilitate the mixing of the asphalt at the bottom, thereby improving the uniformity of asphalt mixing and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat-insulating mixing device for high-performance modified asphalt, comprising a tank body, a tank cover being provided on the top of the tank body, and a mixing mechanism located in the inner cavity of the tank body being installed below the tank cover.

[0007] The stirring mechanism includes a motor, a rotating main shaft, a stirring component, a spiral lifting blade, and an anti-sinking component. The motor is installed in the middle of the upper surface of the tank cover. The upper end of the rotating main shaft passes through the tank cover and is driven by the motor. The spiral lifting blade is welded to the middle of the outer side of the rotating main shaft. The stirring component is fixedly connected to the upper end of the outer side of the rotating main shaft. The anti-sinking component is fixedly connected to the lower end of the rotating main shaft.

[0008] Preferably, the stirring component includes two sets of stirring rods fixedly connected to the upper outer side of the rotating main shaft. Multiple sets of shearing cones are fixedly connected to the outer side of each of the two sets of stirring rods, and the multiple sets of shearing cones are arranged at equal intervals.

[0009] Preferably, the anti-sinking component includes a connecting seat fixedly connected to the lower end of the rotating spindle, and two sets of scraper blades are fixedly connected to the outer side of the connecting seat.

[0010] Preferably, the tank body includes an outer shell, an inner shell, and a conical base. The conical base is disposed at the lower end of the outer shell and the inner shell. A cavity is provided between the outer shell and the inner shell, and the cavity is filled with heat-insulating material.

[0011] Preferably, a controller is provided on the outer side of the outer shell, and a heating wire is provided between the outer shell and the inner shell, the heating wire being arranged in a spiral shape.

[0012] Preferably, the top of the can lid is provided with two sets of feed pipes, and the lower end of the conical base is provided with a discharge pipe with a valve.

[0013] Preferably, a support frame is fixedly connected to the lower end of the conical base, and multiple sets of movable wheels are provided at the lower end of the support frame. A reinforcing ring is fixedly connected to the lower outer side of the outer shell, and a traction ring is provided on the outer side of the reinforcing ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention mainly utilizes the cooperation between the tank and the mixing mechanism. The spiral lifting blades force the asphalt material to circulate axially, preventing asphalt material from stratifying and ensuring uniform mixing of aggregate and asphalt. At the same time, under the action of the mixing component and the anti-settling component, the mixing component shears and modifies the asphalt, promoting the dispersion effect of the asphalt, uniformly dispersing the rubber particles, and preventing agglomeration. Meanwhile, the anti-settling component can prevent aggregate in the asphalt from accumulating at the bottom, thus improving the quality of high-performance modified asphalt production. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the tank of this utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the tank body of this utility model;

[0019] Figure 4 This is a schematic diagram of the stirring mechanism of this utility model.

[0020] In the diagram: 1. Tank body; 2. Tank lid; 3. Agitator; 31. Motor; 32. Rotating spindle; 33. Agitator component; 331. Agitator rod; 332. Shearing cone; 34. Spiral lifting blade; 35. Anti-sinking component; 351. Connecting seat; 352. Scraper blade; 4. Feed pipe; 5. Controller; 6. Support frame; 7. Casters; 8. Reinforcing ring; 9. Traction ring; 10. Discharge pipe with valve; 11. Outer shell; 12. Inner shell; 13. Conical base; 14. Insulating filler; 15. Heating wire. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution: a heat-insulating mixing device for high-performance modified asphalt, including a tank body 1, a tank cover 2 on the top of the tank body 1, and a mixing mechanism 3 located in the inner cavity of the tank body 1 installed below the tank cover 2.

[0023] The stirring mechanism 3 includes a motor 31, a rotating main shaft 32, a stirring component 33, a spiral lifting blade 34, and an anti-sinking component 35. The motor 31 is installed in the middle of the upper surface of the tank cover 2. The upper end of the rotating main shaft 32 passes through the tank cover 2 and is driven by the motor 31. The spiral lifting blade 34 is welded to the middle of the outer side of the rotating main shaft 32. The stirring component 33 is fixedly connected to the upper end of the outer side of the rotating main shaft 32. The anti-sinking component 35 is fixedly connected to the lower end of the rotating main shaft 32.

[0024] The mixing component 33 includes two sets of mixing rods 331 fixedly connected to the upper outer side of the rotating main shaft 32. Multiple sets of shearing cones 332 are fixedly connected to the outer side of each set of mixing rods 331. The multiple sets of shearing cones 332 are arranged at equal intervals. When the mixing rods 331 drive the multiple sets of shearing cones 332 to rotate, they generate strong shearing force, which breaks up the agglomerates of modifiers (such as SBS and rubber powder) and promotes the micro-fusion of modifiers and asphalt.

[0025] The anti-settling component 35 includes a connecting seat 351 fixedly connected to the lower end of the rotating spindle 32. Two sets of scraper blades 352 are fixedly connected to the outside of the connecting seat 351. When the scraper blades 352 rotate, they scrape the bottom of the tank to prevent the deposition of high-density components.

[0026] The tank body 1 includes an outer shell 11, an inner shell 12, and a conical base 13. The conical base 13 is located at the lower end of the outer shell 11 and the inner shell 12. A cavity is provided between the outer shell 11 and the inner shell 12, and the cavity is filled with heat-insulating filler 14. The heat-insulating filler 14 (such as rock wool) can reduce heat loss. The inclined design of the inner wall of the conical base 13 facilitates the concentration of materials to the valved discharge pipe 10, and at the same time matches with the scraper blade 352 to enhance the cleaning effect.

[0027] A controller 5 is provided on the outside of the outer shell 11, and a heating wire 15 is provided between the outer shell 11 and the inner shell 12. The heating wire 15 is arranged in a spiral shape. When the heating wire 15 is energized, it heats the inside of the tank 1 and maintains the temperature. The temperature difference is controlled by the controller 5 to fluctuate within ±3℃, which improves the temperature stability during asphalt mixing and thus improves the quality of asphalt production.

[0028] Two sets of feed pipes 4 are provided on the top of the tank cover 2, and a valved discharge pipe 10 is provided at the lower end of the conical base 13. The asphalt base material and modifier (such as SBS particles) can be fed simultaneously or in stages using the two sets of feed pipes 4, avoiding energy consumption in the premixing process. At the same time, the feed pipes 4 are located on the top of the tank cover 2, and gravity is used to accelerate the material into the mixing zone. After the mixing is completed, the valve on the valved discharge pipe 10 is opened, so that the material is discharged through the conical base 13 under the action of gravity.

[0029] A support frame 6 is fixedly connected to the lower end of the conical base 13. Multiple sets of moving wheels 7 are provided at the lower end of the support frame 6. A reinforcing ring 8 is fixedly connected to the lower outer side of the outer shell 11. A traction ring 9 is provided on the outer side of the reinforcing ring 8. The strength of the bottom of the tank 1 is improved by the reinforcing ring 8, thereby improving the service life of the tank 1. Furthermore, the tank 1 can be stably traction-moved under the action of the support frame 6 and the moving wheels 7, which improves the convenience of moving the device.

[0030] In use, the motor 31 drives the rotating main shaft 32 to rotate the agitator 33, the spiral lifting blades 34 and the anti-settling component 35 on it synchronously. First, the shearing cone 332 on the agitator 33 performs high-speed shearing and crushing of the modifier. Second, the spiral lifting blades 34 push the material to flow axially from bottom to top for cyclic mixing. Finally, the scraper blades 352 of the anti-settling component 35 remove the sediment at the bottom of the tank, improving the efficiency of the mild mixing of the modified asphalt. At the same time, the spiral heating wire 15 works with the double-layer insulated tank 1 to maintain a constant temperature environment, ensuring that the modified asphalt is mixed evenly under controlled temperature. Finally, the material is discharged without residue through the valved discharge pipe 10.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-insulating mixing device for high-performance modified asphalt, comprising a tank (1), characterized in that: The top of the tank (1) is provided with a tank cover (2), and a stirring mechanism (3) located in the inner cavity of the tank (1) is installed below the tank cover (2). The stirring mechanism (3) includes a motor (31), a rotating main shaft (32), a stirring component (33), a spiral lifting blade (34), and an anti-sinking component (35). The motor (31) is installed in the middle of the upper surface of the tank cover (2). The upper end of the rotating main shaft (32) passes through the tank cover (2) and is driven by the motor (31). The spiral lifting blade (34) is welded to the middle of the outer side of the rotating main shaft (32). The stirring component (33) is fixedly connected to the upper end of the outer side of the rotating main shaft (32). The anti-sinking component (35) is fixedly connected to the lower end of the rotating main shaft (32).

2. The heat-insulating mixing device for high-performance modified asphalt according to claim 1, characterized in that: The stirring component (33) includes two sets of stirring rods (331) fixedly connected to the upper outer side of the rotating main shaft (32). Multiple sets of shearing cones (332) are fixedly connected to the outer side of both sets of stirring rods (331), and the multiple sets of shearing cones (332) are arranged at equal intervals.

3. The heat-insulating mixing device for high-performance modified asphalt according to claim 2, characterized in that: The anti-sinking component (35) includes a connecting seat (351) fixedly connected to the lower end of the rotating spindle (32), and two sets of scraper blades (352) are fixedly connected to the outer side of the connecting seat (351).

4. The heat-insulating mixing device for high-performance modified asphalt according to claim 3, characterized in that: The tank (1) includes an outer shell (11), an inner shell (12) and a conical base (13). The conical base (13) is located at the lower end of the outer shell (11) and the inner shell (12). A cavity is provided between the outer shell (11) and the inner shell (12), and a heat-insulating filler (14) is provided in the cavity.

5. The heat-insulating mixing device for high-performance modified asphalt according to claim 4, characterized in that: A controller (5) is provided on the outside of the outer shell (11), and a heating wire (15) is provided between the outer shell (11) and the inner shell (12), and the heating wire (15) is arranged in a spiral shape.

6. A heat-insulating mixing device for high-performance modified asphalt according to claim 5, characterized in that: The top of the can lid (2) is provided with two sets of feed pipes (4), and the bottom of the conical base (13) is provided with a discharge pipe (10) with a valve.

7. A heat-insulating mixing device for high-performance modified asphalt according to claim 6, characterized in that: The lower end of the conical base (13) is fixedly connected to a support frame (6), and the lower end of the support frame (6) is provided with multiple sets of moving wheels (7). The lower outer side of the outer shell (11) is fixedly connected to a reinforcing ring (8), and the outer side of the reinforcing ring (8) is provided with a traction ring (9).

Images