Preparation method of granular colored asphalt binder

Abstract

The present invention relates to the technical field of asphalt auxiliary material preparation, and discloses a method for preparing granular colored asphalt binder, which specifically includes the following steps: S11: putting granular colored pigments and fluid green raw materials into a mixing device for mixing, the mixture is put into the box port of the mixing device, and is vibrated, stirred and mixed by a vibration stirring mechanism; S12: after stirring and mixing, the feeding mechanism is controlled to open, the mixture flows out from the discharge port, and then transferred to a mold for cooling to form an asphalt slab material; S13: the asphalt slab material is then mixed and cut multiple times in a cutting device, so that the asphalt slab material is cut into granular colored asphalt binder. The present invention achieves thorough and uniform mixing of the mixture of the colored pigment and the fluid green raw material by setting a vibration stirring mechanism to improve the mixing effect, and the end of the pad groove is arc-shaped, which is convenient for the internal fluid to flow out quickly, thereby ensuring a sealing effect.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of preparation of asphalt auxiliary materials, specifically, to a method for preparing granular colored asphalt binder. Background Art

[0002] Colored asphalt, also known as colored binder, is a binder that mimics the components of petroleum asphalt, using a blend of petroleum resin and chemical materials such as SBS modifiers. This asphalt itself is not colored or colorless, but rather dark brown. In recent years, due to market custom, it has been collectively referred to as colored asphalt. The three main performance indicators of colored asphalt must meet the technical requirements of base asphalt, as per CJJ / T218-2014, "Technical Specifications for Colored Asphalt Concrete Pavements of Urban Roads." The LS series of colored asphalts are divided into three categories based on their road performance: base, modified, and specialty, to meet the diverse needs of the colored paving market.

[0003] However, the existing colored asphalt binder is not mixed sufficiently in the early stage, resulting in reduced performance of the asphalt binder subsequently cut, especially insufficient aging resistance and poor high temperature resistance. As a result, the colored asphalt binder needs to be repaired and improved in time after paving, which increases labor input. Summary of the Invention

[0004] The purpose of the present invention is to provide a method for preparing granular colored asphalt binder, which realizes thorough and uniform mixing of the mixture of colored pigments and fluid green raw materials by setting a vibration stirring mechanism. The movable plate is driven by a vibration motor to realize reciprocating motion in a fixed frame. The vibration of the vibration motor utilizes the eccentric block and the stator on the rotating shaft to realize extrusion, causing the rotating shaft to realize reciprocating vibration, and the end of the gasket groove is arc-shaped, which facilitates the rapid outflow of the internal fluid, thereby ensuring the sealing effect. It is intended to solve the problem in the prior art that the colored asphalt binder is not sufficiently mixed in the early stage, resulting in reduced performance of the subsequently cut asphalt binder, especially insufficient aging resistance and poor high temperature resistance.

[0005] The present invention is achieved by a method for preparing a granular colored asphalt binder, which specifically comprises the following steps:

[0006] S11: Adding granular color pigments and fluid green raw materials into a mixing device for mixing. The mixed materials are added from the box port of the mixing device and vibrated and stirred by a vibrating stirring mechanism.

[0007] S12: After stirring and mixing, the discharge mechanism is controlled to open, and the mixed material flows out from the discharge port and is then transferred to a mold for cooling to form an asphalt slab material;

[0008] S13: The asphalt slab material is mixed and cut multiple times in the cutting equipment, so that the asphalt slab material is cut into granular colored asphalt binder.

[0009] Furthermore, the mixing device includes a frame, a mixing box is provided on the frame, and the inner diameter of the mixing box decreases from top to bottom.

[0010] Furthermore, the vibration stirring mechanism is arranged on both sides of the lower part of the mixing box, and the vibration stirring mechanism includes a vibration motor arranged outside the mixing box, one side of the vibration motor is connected to a movable plate, and the movable plate is arranged in the mixing box and is limited by a fixed frame.

[0011] Furthermore, a buckle groove is provided on the bottom wall of the fixing frame, and the buckle groove is adapted to the outer wall of the movable plate. Springs are provided on both sides of the buckle groove, and one end of the spring is connected to the movable plate.

[0012] Furthermore, a closing plate is provided at the lower part of the fixing frame, a connecting pad is provided at the end of the closing plate, the connecting pad extends to the movable plate, a pad groove adapted to the connecting pad is provided at the upper part of the movable plate, an inclined end is provided on one side of the pad groove, and the connecting pad extends to the inner side wall of the pad groove.

[0013] Furthermore, a through slot is provided in the middle of the fixing frame, and a plurality of movable paddles are evenly provided on the movable plate, and the movable paddles pass through the through slot and extend to the interior of the mixing box.

[0014] Furthermore, the unloading mechanism includes connecting rods arranged on both sides of the frame, and meshing transmission gears are arranged on the inner side of the connecting rods. A closing frame is coaxially connected to the transmission gear. When the transmission gear rotates, it drives the two closing frames to rotate. When the two closing frames abut against each other, the discharge port is closed.

[0015] Furthermore, hydraulic rods are connected to both side walls of the two closed frames, and connectors are provided at both ends of the hydraulic rods, and the connectors are respectively fixed on the closed frames.

[0016] Furthermore, a crank is provided on the connecting head of one of the closed frames, and the end of the crank is connected to the hydraulic rod, so that when the hydraulic rod is extended, the two closed frames are pushed to rotate toward each other to open the discharge port, and vice versa.

[0017] Furthermore, a protective cover is provided on one side of the middle portion of the connecting rod. The protective cover is provided on the outside of the transmission gear, and both sides of the protective cover are respectively fixed on the outer wall of the connecting rod and the mixing box.

[0018] Compared with the prior art, the method for preparing granular colored asphalt binder provided by the present invention has the following advantages:

[0019] Beneficial effects:

[0020] 1. The vibration stirring mechanism is provided to achieve thorough and uniform mixing of the mixture of color pigments and fluid green raw materials. The vibration motor drives the movable plate to realize cyclic reciprocating motion in the fixed frame. The vibration of the vibration motor utilizes the eccentric block and the stator on the rotating shaft to realize extrusion, causing the rotating shaft to realize reciprocating vibration, thereby transmitting the vibration force to the movable plate. Under the movement of the movable plate, the spring is continuously squeezed and pulled to realize reciprocating movement, and finally the movable paddle is driven to vibrate and stir in the mixture. At the same time, for the sealing of the lower part of the movable plate, under the action of the conflict between the connecting pad and the side wall of the pad groove, the fluid material is ensured to flow out of the pad groove. At the same time, when the pad groove is exposed, the fluid is filled into the pad groove. When the connecting pad is reset again, the fluid is squeezed out of the pad groove at this time, and the end of the pad groove is arc-shaped, which is convenient for the internal fluid to flow out quickly, thereby ensuring the sealing effect.

[0021] 2. The mixed material is quickly discharged through the provided discharge mechanism. First, the discharge port is closed through the friction between the two closed frames. After the mixed material is mixed, the closed frame is directly opened. The two closed frames are supported by the hydraulic rod, so that the transmission gear rotates to open. The connector ensures the stability of the connection between the closed frame and the hydraulic rod. At the same time, a crank is provided on one side to facilitate the dispersion of the supporting force of the connector when it is supported by force, thereby extending the service life of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic side view of the structure of a mixing device in the method for preparing granular colored asphalt binder proposed by the present invention;

[0023] Figure 2 This is a schematic diagram of the bottom structure of the mixing equipment in the method for preparing granular colored asphalt binder proposed in the present invention;

[0024] Figure 3 This is a structural installation diagram of the vibration stirring mechanism in the method for preparing granular colored asphalt binder proposed in the present invention;

[0025] Figure 4 This is a top view of the vibration stirring mechanism in the method for preparing granular colored asphalt binder proposed in the present invention;

[0026] Figure 5 This is a side view of the partial structure of the movable plate in the method for preparing the granular colored asphalt binder proposed by the present invention;

[0027] Figure 6This is a schematic diagram of the bottom structure of the middle fixing frame in the method for preparing granular colored asphalt binder proposed in the present invention;

[0028] Figure 7 for Figure 3 Schematic diagram of the enlarged structure of area A in the middle.

[0029] In the figure: 1- rack, 2- mixing box, 3- box opening, 4- ladder;

[0030] 5-vibration stirring mechanism, 51-vibration motor, 52-movable plate, 53-fixed frame, 54-buckle groove, 55-closing plate, 56-connecting pad, 57-pad groove, 58-end, 59-movable paddle, 510-rotating shaft, 511-eccentric block, 512-stator, 513-spring;

[0031] 6- unloading mechanism, 61- connecting rod, 62- closing frame, 63- hydraulic rod, 64- connecting head, 65- transmission gear, 66- protective cover, 67- crank;

[0032] 7-Discharge port. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0035] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] Reference Figure 1-7 As shown in FIG, the method for preparing granular colored asphalt binder specifically comprises the following steps:

[0037] S11: Adding granular color pigments and fluid cyan raw materials into a mixing device for mixing. The mixed materials are added from the box port 3 of the mixing device and vibrated and stirred by the vibrating stirring mechanism 5.

[0038] S12: After stirring and mixing, the discharge mechanism 6 is controlled to open, and the mixed material flows out from the discharge port 7 and is then transferred to the mold for cooling to form an asphalt plate material. The vibration stirring mechanism 5 is provided to achieve thorough and uniform mixing of the mixture of the color pigment and the fluid green raw material, so that the internal fluid can be evenly mixed. Secondly, the vibration stirring mechanism 5 is provided with good sealing performance to prevent leakage of the fluid material, thereby ensuring the sealing effect;

[0039] S13: The asphalt slab material is then mixed and cut multiple times in the cutting equipment, so that the asphalt slab material is cut into granular colored asphalt binder. The performance of the colored asphalt binder after the mixed cutting is greatly improved, and the mixing effect is enhanced.

[0040] In this embodiment, the mixing equipment includes a frame 1, on which a mixing box 2 is provided. The inner diameter of the mixing box 2 decreases from top to bottom, and a ladder 4 is provided on the frame 1 to facilitate material pouring and cleaning the interior of the mixing box 2. The inner diameter of the mixing box 2 decreases from top to bottom to ensure that the volume of the material is reduced during mixing, thereby ensuring that the material can continue to gather during mixing to achieve highly dispersed mixing.

[0041] In this embodiment, the vibration stirring mechanism 5 is arranged on both sides of the lower part of the mixing box 2, and the vibration stirring mechanism 5 includes a vibration motor 51 arranged on the outside of the mixing box 2, one side of the vibration motor 51 is connected to the movable plate 52, the movable plate 52 is arranged in the mixing box 2 and is limited by the fixed frame 53, and a buckle groove 54 is provided on the bottom wall of the fixed frame 53, and the buckle groove 54 is adapted to the outer wall of the movable plate 52. Springs 513 are provided on both sides of the buckle groove 54, and one end of the spring 513 is connected to the movable plate 52. A closing plate 55 is provided at the lower part of the fixed frame 53, and a connecting pad 56 is provided at the end of the closing plate 55. The connecting pad 56 extends to the movable plate 52, and the upper part of the movable plate 52 is provided with a buckle connected to the connecting pad 56. The matching gasket groove 57 has an inclined end 58 on one side of the gasket groove 57. The end 58 of the gasket groove 57 is arc-shaped, which is convenient for the internal fluid to flow out quickly. The connecting gasket 56 extends to the inner wall of the gasket groove 57. A through groove is provided in the middle of the fixing frame 53. A plurality of movable paddles 59 are evenly provided on the movable plate 52. The movable paddles 59 pass through the through groove and extend to the interior of the mixing box 2. The vibration motor 51 vibrates and continuously squeezes and pulls the spring 513 under the movement of the movable plate 52, thereby realizing reciprocating movement, and finally drives the movable paddle 59 to vibrate and stir in the mixture. First, the movable paddle 59 is used for stirring and mixing, and secondly, the side walls of the mixing box 2 are mixed, which is mainly the reciprocating motion of the movable plate 52.

[0042] In this embodiment, the unloading mechanism 6 includes connecting rods 61 arranged on both sides of the frame 1, and a meshing transmission gear 65 is provided on the inner side of the connecting rod 62. A closing frame 62 is coaxially connected to the transmission gear 65. When the transmission gear 65 rotates, it drives the two closing frames 62 to rotate. When the two closing frames 62 abut against each other, the discharge port 7 is closed. Hydraulic rods 63 are connected to the side walls of the two closing frames 62. Connectors 64 are provided at both ends of the hydraulic rods 63. The connectors 64 are respectively fixed to the closing frames 62. On the top, a crank 67 is provided on the connecting head of one of the closing frames 62, and the end of the crank 67 is connected to the hydraulic rod 63. When the hydraulic rod 63 is extended, the two closing frames 62 are pushed to rotate toward the opposite side to realize the opening of the discharge port 7. Conversely, the discharge port 7 is closed. The discharge port 7 is closed by the friction between the two closing frames 62. After the mixed material is mixed, the closing frame 62 is directly opened, and the two closing frames 62 are supported by the hydraulic rod 63, thereby causing the transmission gear 65 to rotate to realize the opening.

[0043] In this embodiment, a protective cover 66 is provided on one side of the middle part of the connecting rod 61. The protective cover 66 is provided on the outside of the transmission gear 65, and the two sides are respectively fixed on the outer wall of the connecting rod 61 and the mixing box 2, thereby protecting the transmission gear 65 and preventing dust or foreign objects from falling into the transmission gear 65.

[0044] When the present technical solution is in use, the mixture of the color pigment and the fluid green raw material is thoroughly mixed and evenly stirred by the vibration stirring mechanism 5, which drives the movable plate 52 to realize cyclic reciprocating motion in the fixed frame 53 through the vibration motor 51. When the vibration motor 51 vibrates, the eccentric block 511 on the rotating shaft 510 and the stator 512 are used to realize extrusion, causing the rotating shaft 510 to realize reciprocating vibration, thereby transmitting the vibration force to the movable plate 52. Under the movement of the movable plate 52, the spring 513 is continuously squeezed and pulled, thereby realizing reciprocating movement, and finally driving the movable paddle 59 to vibrate and stir in the mixture. At the same time, for the closedness of the lower part of the movable plate 52, under the action of the interference between the connecting pad 56 and the side wall of the pad groove 57, it is ensured that the fluid material can flow out of the pad groove 57, and the pad groove 57 When exposed, the fluid fills the gasket groove 57, and the connecting gasket 56 is reset again. At this time, the fluid is squeezed out of the gasket groove 57, and the end 58 of the gasket groove 57 is arc-shaped, which is convenient for the internal fluid to flow out quickly, thereby ensuring the sealing effect, and the mixing effect of the mixture is also significantly improved. The rapid discharge of the mixture is completed by the set discharge mechanism 6. First, the discharge port 7 is closed by the friction between the two closing frames 62. After the mixture is mixed, the closing frame 62 is directly opened. The two closing frames 62 are supported by the hydraulic rod 63, so that the transmission gear 65 rotates to open. The connecting head 64 ensures the stability of the connection between the closing frame 62 and the hydraulic rod 63. At the same time, a crank 67 is set on one side to facilitate the dispersion of the supporting force of the connecting head 64 when it is supported by force, thereby extending the service life of the connecting head 64.

[0045] Control Example

[0046] Based on the above technical features, this technical solution extracts two granular colored asphalt binders for performance testing, and the values ​​are shown in the following table:

[0047]

[0048]

[0049] By testing the granular colored asphalt binder of this technical solution, it was found that it has good performance improvement in Type A (heavy-load traffic), Type B (medium and light traffic), Type C non-motorized vehicle lanes, and Type D below -40°C. While solving the technical problem of insufficient mixing of colored asphalt binder in the early stage, which leads to reduced performance of the asphalt binder after subsequent cutting, its performance is also improved by at least 5-10%, so it has obvious improvement characteristics when used.

[0050] In this embodiment, the entire operation process can be controlled by a computer, and a PLC, etc. can be added to realize automatic operation control. In each operation link, sensors can be set to provide signal feedback to realize the sequential execution of steps. These are all common knowledge of current automatic control and will not be repeated in this embodiment.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for preparing granular colored asphalt binder, characterized in that: The specific steps include: S11: Adding granular color pigments and fluid green raw materials into a mixing device for mixing. The mixed materials are added from the box port of the mixing device and vibrated and stirred by a vibrating stirring mechanism. S12: After stirring and mixing, the discharge mechanism is controlled to open, and the mixed material flows out from the discharge port and is then transferred to a mold for cooling to form an asphalt slab material; S13: The asphalt slab material is then mixed and cut multiple times in a cutting device, so that the asphalt slab material is cut into granular colored asphalt binder; The vibration stirring mechanism is arranged on both sides of the lower part of the mixing box, and the vibration stirring mechanism includes a vibration motor arranged outside the mixing box, one side of the vibration motor is connected to a movable plate, and the movable plate is arranged in the mixing box and is limited by a fixed frame; A buckle groove is provided on the bottom wall of the fixed frame, and the buckle groove is adapted to the outer wall of the movable plate. Springs are provided on both sides of the buckle groove, and one end of the spring is connected to the movable plate. A closing plate is provided at the lower portion of the fixing frame, a connecting pad is provided at the end of the closing plate, the connecting pad extends to the movable plate, a pad groove adapted to the connecting pad is provided at the upper portion of the movable plate, an inclined end portion is provided on one side of the pad groove, and the connecting pad extends to the inner side wall of the pad groove; A through slot is provided in the middle of the fixing frame, and a plurality of movable paddles are evenly provided on the movable plate. The movable paddles penetrate the through slot and extend to the interior of the mixing box.

2. The method for preparing granular colored asphalt binder according to claim 1, wherein: The mixing device comprises a frame, a mixing box is arranged on the frame, and the inner diameter of the mixing box decreases from top to bottom.

3. The method for preparing granular colored asphalt binder according to claim 1 or 2, characterized in that: The unloading mechanism includes connecting rods arranged on both sides of the frame, and meshing transmission gears are arranged on the inner sides of the connecting rods. A closing frame is coaxially connected to the transmission gear. When the transmission gear rotates, it drives the two closing frames to rotate. When the two closing frames abut against each other, the discharge port is closed.

4. The method for preparing granular colored asphalt binder according to claim 3, characterized in that: Both side walls of the two closed frames are connected with hydraulic rods, and both ends of the hydraulic rods are provided with connecting heads, which are respectively fixed on the closed frames.

5. The method for preparing granular colored asphalt binder according to claim 4, characterized in that: A crank is provided on the connecting head of one of the closing frames, and the end of the crank is connected to the hydraulic rod. When the hydraulic rod is extended, the two closing frames are pushed to rotate toward each other to open the discharge port, and vice versa.

6. The method for preparing granular colored asphalt binder according to claim 5, characterized in that: A protective cover is provided on one side of the middle portion of the connecting rod. The protective cover is provided on the outer side of the transmission gear, and both sides of the protective cover are respectively fixed on the outer wall of the connecting rod and the mixing box.

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