Three-in-one asphalt mixing system

Abstract

The application relates to a one-station three-purpose asphalt mixing system, and relates to the technical field of asphalt mixing. The one-station three-purpose asphalt mixing system comprises a cold aggregate supply mechanism for realizing cold aggregate supply, an old material supply mechanism for realizing old material feeding, a screening mechanism for screening aggregates, a weighing mechanism for weighing the specific weight of materials, and a stirring mechanism for receiving and stirring materials. The weighing mechanism comprises a first bearing pot and a second bearing pot which are symmetrically arranged and have opposite opening directions, and a weight sensor which is located between the first bearing pot and the second bearing pot. A rotating part which drives the first bearing pot and the second bearing pot to overturn is further connected between the first bearing pot and the second bearing pot. The stirring mechanism is used for receiving the materials poured out from the first bearing pot and the second bearing pot. The one-station three-purpose asphalt mixing system can be used for new material mixing, old material regeneration and new and old material mixed regeneration, and can reduce the influence of pre-material residues on the stability of asphalt regeneration.

Description

Technical Field

[0001] This application relates to the technical field of asphalt mixing, and in particular to a one-stop, three-purpose asphalt mixing system. Background Technology

[0002] With the development of asphalt pavement engineering in China, most of the asphalt pavements built and opened to traffic in the early stages have entered the major and medium repair stage, resulting in an increase in waste asphalt mixtures year by year.

[0003] Currently, there are two main application forms of asphalt hot recycling technology: on-site and plant-mixed. On-site hot recycling is characterized by its fast processing speed and minimal impact on traffic, but its disadvantages include a limited range of road thicknesses it can process, and the significant environmental pollution caused by the exhaust gases emitted during the heating process. Plant-mixed hot recycling involves adding a plant-mixed hot recycling unit to an existing asphalt mixing plant. It is a fixed asphalt mixture recycling station, and its advantages include strong controllability of the finished product, making it the most widely used type of asphalt recycling globally.

[0004] Since the various components of asphalt need to be weighed by a weighing mechanism before being mixed, the materials from the previous weighing process are prone to remain in the weighing mechanism, which can affect the subsequent weighing and thus affect the subsequent production results. Summary of the Invention

[0005] In order to reduce the impact of residual pre-processed materials on the stability of asphalt recycling, this application provides a three-in-one asphalt mixing system.

[0006] This application provides a one-stop, three-purpose asphalt mixing system, which adopts the following technical solution:

[0007] A three-in-one asphalt mixing system includes a cold aggregate supply mechanism for supplying cold aggregate and a recycled material supply mechanism for feeding recycled material. It also includes a weighing mechanism for weighing the specific weight of the material and a mixing mechanism for receiving and mixing the material. The weighing mechanism includes a first and second bearing pot symmetrically arranged with opposite opening directions, and a weight sensor located between the first and second bearing pots. A rotating component is connected between the first and second bearing pots to drive them to rotate. The mixing mechanism receives the material poured out from the first and second bearing pots.

[0008] By adopting the above technical solution, the first and second bearing pots are used to receive materials, and the weight sensor can weigh the materials. When the material weight is sufficient, the rotating component drives the first and second bearing pots to rotate, reversing the positions of the two pots for loading. Simultaneously, because the opening faces downwards, any residual material can be poured out, preventing residual material from affecting the subsequent weighing accuracy. In use, it can independently mix new materials, regenerate old materials, or mix new and old materials, achieving three uses in one station.

[0009] Optionally, the first and second support pots have a discharge port on one side, and when the rotating component drives the first and second support pots to rotate, the material is discharged from the discharge port.

[0010] By adopting the above technical solution, it is possible to easily pour out materials.

[0011] Optionally, a cleaning mechanism is also connected below the weighing mechanism. The cleaning mechanism includes a cleaning brush and a control component for controlling the cleaning brush to clean the first and second carrier pots. The control component is configured to retract the cleaning brush when the rotating member drives the first and second carrier pots to rotate, and to drive the cleaning brush to penetrate into the first and / or second carrier pots for cleaning when the rotating member stops driving the first and second carrier pots to rotate.

[0012] By adopting the above technical solution, the adhesion of pre-processed materials can be further reduced by cleaning the first and second carrier pots with a cleaning brush.

[0013] Optionally, the rotating component is a motor with a drive gear connected to its output shaft. A mating gear that meshes with the drive gear is provided between the first and second bearing pots. An eccentric section is also connected to the output shaft of the motor. The control component includes a movable connecting rod connected to the eccentric section. One end of the movable connecting rod is movably sleeved on the eccentric section, and the other end is movably connected to the cleaning brush. The cleaning brush is also provided with a vertical limiting track.

[0014] By adopting the above technical solution, the motor can drive the cleaning brush away from the pot body during rotation, thus preventing the cleaning brush from affecting the normal rotation of the pot body.

[0015] Optionally, the transmission ratio between the driving gear and the mating gear is 2:1.

[0016] By adopting the above technical solution, when the cleaning brush completes its vertical reset, the first and second bearing pots are exactly reversed.

[0017] Optionally, the distance by which the eccentric segment deviates from the output shaft axis is greater than the depth of the first and second support pots.

[0018] By adopting the above technical solution, the cleaning brush can be prevented from affecting the rotation of the first and second support pots.

[0019] Optionally, the cleaning brush includes a rod and a brush body passing through the rod. The rod is connected to the movable connecting rod. The brush body is provided with bristles and is connected to a drive member that drives the brush body to rotate.

[0020] By adopting the above technical solution, the cleaning effect on the first and second bearing pots is improved.

[0021] Optionally, the preparation system also includes a screening mechanism for screening the aggregate heated after passing through the drying drum, and several storage bins for collecting the screened aggregate, wherein the old material supplied by the old material supply mechanism is directly fed into one of the storage bins without passing through the screening mechanism.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Thermal recycling of asphalt is achieved by weighing and mixing new and old materials;

[0024] 2. The cleaning mechanism can clean the weighing mechanism to avoid material residue affecting the stability of subsequent asphalt hot recycling. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall preparation system.

[0026] Figure 2 This is a schematic diagram showing the coordination between the weighing mechanism and the cleaning mechanism.

[0027] Figure 3 This is a schematic diagram showing the rotating component working in conjunction with the control mechanism to extend the cleaning brush out of the pot.

[0028] Figure 4 This is a schematic diagram showing the rotating component working in conjunction with the control mechanism to drive the cleaning brush into the pot.

[0029] Explanation of reference numerals in the attached drawings: 1. Cold aggregate supply mechanism; 2. Recycled material supply mechanism; 3. Drying drum; 4. Screening mechanism; 5. Weighing mechanism; 51. First bearing pot; 511. Discharge port; 52. Second bearing pot; 53. Rotating component; 531. Drive gear; 532. Matching gear; 533. Eccentric section; 6. Mixing mechanism; 7. Finished product storage bin; 8. Storage bin; 9. Cleaning mechanism; 91. Cleaning brush; 911. Rod; 912. Brush body; 913. Drive component; 92. Control component; 921. Movable connecting rod; 922. Limiting track. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a one-stop, three-purpose asphalt mixing system.

[0032] Reference Figure 1 The one-stop, three-purpose asphalt mixing system includes: 1. a cold aggregate supply mechanism for feeding cold aggregates; 2. a used aggregate supply mechanism for crushing and feeding used aggregates; 3. a drying drum for drying and heating cold aggregates; 4. a screening mechanism for screening aggregates; 5. a weighing mechanism for weighing aggregates; 6. a mixing mechanism for mixing; and 7. a finished product storage bin. Asphalt thermal recycling is achieved by weighing and mixing new and used aggregates.

[0033] Specifically, the cold aggregate supply mechanism 1 feeds the cold aggregate into the drying drum 3. The cold aggregate supply system can be a drive belt. The drying drum 3 is supplied with a heat source by a burner, which vaporizes the moisture in the cold aggregate, which is then extracted by an induced draft fan and discharged after filtration. After passing through the drying drum 3, the cold aggregate has its moisture removed and is gradually heated.

[0034] The screening mechanism 4 is located above the drying drum 3. The aggregate, heated after passing through the drying drum 3, is lifted upwards by an elevator and fed into the screening mechanism 4. The screening mechanism 4 can be a centrifugal screening machine to screen aggregates according to their weight; or it can be a vibrating screening machine with different mesh sizes to screen aggregates according to their particle size. Of course, other methods that can screen aggregates are also acceptable.

[0035] The bottom of the screening mechanism 4 is equipped with several storage bins 8. The aggregates after screening are directly stored in different storage bins 8. In addition, it should be noted that the screening mechanism 4 is mainly for screening new materials. After the old materials are crushed, they are simply dried and heated by a short section of additional drying drum 3 and then directly stored in a storage bin 8.

[0036] Furthermore, refer to Figure 2 and Figure 3The weighing mechanism 5 includes a pot body, which comprises a first carrying pot 51 and a second carrying pot 52 symmetrically arranged with opposite opening directions, and a weight sensor located between the first carrying pot 51 and the second carrying pot 52. A rotating component 53 is also connected between the first carrying pot 51 and the second carrying pot 52 to rotate them. The first carrying pot 51 and the second carrying pot 52 are provided with a discharge port 511. When the first carrying pot 51 or the second carrying pot 52 is filled with enough raw material, the rotating component 53 rotates the first carrying pot 51 and the second carrying pot 52, allowing the raw material to be discharged. A stirring mechanism 6 is located at the bottom side of the weighing mechanism 5, and the raw material discharged from the first carrying pot 51 or the second carrying pot 52 is fed into the stirring mechanism 6. For example, in the initial state, the opening of the first supporting pot 51 faces upwards. At this time, the raw materials stored in the storage bin 8 are fed into the first supporting pot 51. The weight sensor detects the weight of the raw materials in the first supporting pot 51. When the required weight is reached, the rotating component 53 drives the first supporting pot 51 to rotate, thereby emptying the raw materials from the first supporting pot 51. Subsequently, the opening of the second supporting pot 52 faces upwards, and the old materials stored in the storage bin 8 can be directly fed into the second supporting pot 52. The weight sensor detects the weight of the old materials in the second supporting pot 52. When the required weight is reached, the rotating component 53 drives the second supporting pot 52 to rotate, thereby emptying the raw materials from the second supporting pot 52. Of course, in other embodiments, two weight sensors can be set to weigh the materials in the first supporting pot 51 and the second supporting pot 52 respectively. Here, sensor detection followed by control via a central control unit is common knowledge to those skilled in the art, and therefore will not be elaborated upon.

[0037] In this embodiment, the mixing mechanism 6 is identical to the mixing mechanism 6 of existing asphalt hot mixing plants in terms of its specific structure and method, except for the difference in its relative position to the weighing mechanism 5. Therefore, it will not be described in detail.

[0038] For further details, please refer to [reference]. Figure 2 and Figure 3 Although the rotation of the first and second supporting pots 51 and 52 can achieve separate weighing and feeding of new and old materials, some residue of the pre-processed material may still remain inside. Therefore, in this embodiment, a cleaning mechanism 9 is also provided below the weighing mechanism 5. The cleaning mechanism 9 includes a cleaning brush 91 and a control component 92 that controls the cleaning brush 91 to clean the first and second supporting pots 51 and 52.

[0039] Among them, reference Figure 2 , Figure 3 and Figure 4The control component 92 and the rotating component 53 are in a cooperative relationship. Specifically, the rotating component 53 is a motor with a drive gear 531 connected to its output shaft. A mating gear 532 that meshes with the drive gear 531 is provided between the first bearing pot 51 and the second bearing pot 52. The drive gear 531 and the mating gear 532 have a transmission ratio of 2:1, meaning that after the drive gear 531 rotates one revolution, the mating gear 532 rotates half a revolution. An eccentric section 533 is provided on the output shaft. The distance of the eccentric section 533 from the center of the output shaft is greater than the depth of the first bearing pot 51 and the second bearing pot 52. The control component 92 includes a movable connecting rod 921. One end of the movable connecting rod 921 is movably sleeved on the eccentric section 533, and the other end is rotatably connected to the cleaning brush 91. The cleaning brush 91 is also connected to a vertical limiting rail 922. Under the action of the limiting rail 922, the cleaning brush 91 can only move in the vertical direction, and at the same time, it moves vertically under the drive of the movable connection.

[0040] When the movable connecting rod 921 is at the upper end of the eccentric section 533, the cleaning brush 91 penetrates into the interior of the first or second supporting pot 51 to clean the inside of the pot. When the movable connecting rod 921 is at the lower end of the eccentric section 533, the cleaning brush 91 is located outside the first or second supporting pot 51 and does not affect the normal rotation of the first or second supporting pot 51. Since the cooperating gear 532 only rotates half a turn after the driving gear 531 completes one turn, and the movement distance of the cleaning brush 91 is at least twice the depth of the pot, the cleaning brush 91 will not affect the normal rotation of the pot when it is removed from the pot.

[0041] Furthermore, the cleaning brush 91 includes a rod cylinder 911 and a brush body 912 rotatably inserted inside the rod cylinder 911. The rod cylinder 911 is connected to a movable connecting rod 921. The brush body 912 is provided with bristles, and the rod cylinder 911 is provided with a driving component 913 that drives the brush body 912 to rotate. The driving component 913 is a motor.

[0042] The implementation principle of the one-stop three-purpose asphalt mixing system in this application embodiment is as follows:

[0043] The mixing system has three operating methods: new material mixing, old material recycling, and mixed new and old material recycling. It should be noted that for old material recycling, epoxy resin and a hardener need to be added and mixed together. The epoxy resin and hardener can be weighed separately before being added to the mixing unit 6. The cleaning unit 9 cleans the weighing unit 5 to prevent residual materials from affecting the stability of subsequent asphalt thermal recycling.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A one-stop three-use type asphalt mixing system, characterized in that: The cold aggregate feeding mechanism (1) is used to realize cold aggregate feeding, and the old material feeding mechanism (2) is used to realize old material feeding; the weighing mechanism (5) is used to weigh the specific weight of the material, and the stirring mechanism (6) is used to receive and stir the material; the weighing mechanism (5) comprises a first bearing pot (51) and a second bearing pot (52) which are symmetrically arranged and have opposite opening directions, and a weight sensor which is located between the first bearing pot (51) and the second bearing pot (52); a rotating member (53) which drives the first bearing pot (51) and the second bearing pot (52) to rotate is connected between the first bearing pot (51) and the second bearing pot (52); and the stirring mechanism (6) is used to receive the material poured out from the first bearing pot (51) and the second bearing pot (52). The cleaning mechanism (9) is further connected below the weighing mechanism (5), and the cleaning mechanism (9) comprises a cleaning brush (91) and a control assembly (92) which controls the cleaning brush (91) to clean the first bearing pot (51) and the second bearing pot (52); the control assembly (92) is configured to drive the cleaning brush (91) to recover when the rotating member (53) drives the first bearing pot (51) and the second bearing pot (52) to rotate, and drive the cleaning brush (91) to clean in the first bearing pot (51) and / or the second bearing pot (52) when the rotating member (53) stops driving the first bearing pot (51) and the second bearing pot (52) to rotate.

2. The one-stop three-purpose asphalt mixing system according to claim 1, characterized in that: One side of the first bearing pot (51) and the second bearing pot (52) has a pouring opening (511), and the material is sent out from the pouring opening (511) when the rotating member (53) drives the first bearing pot (51) and the second bearing pot (52) to rotate.

3. The one-stop three-purpose asphalt mixing system according to claim 1, characterized in that: The rotating member (53) is a motor with a driving gear (531) connected to the output shaft, a matching gear (532) is arranged between the first bearing pot (51) and the second bearing pot (52) and meshes with the driving gear (531), an eccentric section (533) is further connected to the output shaft of the motor, the control assembly (92) comprises a movable connecting rod (921) connected to the eccentric section (533), one end of the movable connecting rod (921) is movably sleeved on the eccentric section (533), and the other end of the movable connecting rod (921) is movably connected with the cleaning brush (91); a limiting track (922) in the vertical direction is further arranged on the cleaning brush (91).

4. The one-stop three-use type asphalt mixing system according to claim 3, characterized in that: The transmission ratio of the driving gear (531) and the matching gear (532) is 2:

1.

5. The one-stop three-in-one asphalt mixing system of claim 4, wherein: The distance between the eccentric section (533) and the output shaft center is greater than the depth of the first bearing pot (51) and the second bearing pot (52).

6. The one-stop three-use type asphalt mixing system according to claim 3, characterized in that: The cleaning brush (91) comprises a rod cylinder (911) and a brush body (912) arranged in the rod cylinder (911), the rod cylinder (911) is connected with the movable connecting rod (921), the brush body (912) is provided with brush hairs, and the brush body (912) is connected with a driving member (913) for driving the brush body (912) to rotate.

7. The one-stop three-use type asphalt mixing system according to claim 1, characterized in that: The screening mechanism screens the heated aggregate after the drying drum (3), and a plurality of storage bins (8) are used for collecting the screened aggregate, and the old material feeding mechanism (2) directly sends the old material into one of the storage bins (8) without passing through the screening mechanism.

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