Oil-rich RAP anti-sticking regeneration roller structure based on fine screening technology

Abstract

The utility model relates to an oil-rich RAP anti-sticking regeneration roller structure based on a fine screening technology, which comprises a mounting base, driving components are mounted on the left and right parts of the mounting base, the driving component on the left side is connected with a front roller, and the driving component on the right side is connected with a rear roller. The front roller and the rear roller are both rotationally connected with the mounting base, a regeneration ring is connected between the front roller and the rear roller, a first feeding port is formed in the left side of the mounting base, a combustion chamber connector is also formed in the left side of the mounting base, and a discharging port is formed in the right side of the mounting base. Heat in the rear roller is conveyed into the auxiliary cylinder through the tail gas pipe, so that fine aggregate is preheated and dried, tail gas waste heat is utilized, the preheated fine aggregate has certain liquidity, the high adhesion property of the fine aggregate can be relieved, the adhesion condition of the fine aggregate is prevented, and the service life of the fine aggregate is prolonged. And the temperature in the regeneration ring and the rear roller is lower than that in the front roller, so that the problem of aging of the fine aggregate due to overhigh temperature can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of recycled asphalt mixture production, in particular to an anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology. Background Art

[0002] With the increasing demand for sustainable resource conservation, the recycling of old asphalt pavement has become a key research topic in road engineering. Traditionally, recycled asphalt mixture production involves heating and mixing milled recycled asphalt pavement (RAP) throughout the mix before mixing it with new asphalt and aggregate. In practical applications, finely screened 0-5 mm aggregate contains a high concentration of old asphalt, which has strong cohesiveness and a large surface area, requiring preheating and dehydration at appropriate temperatures. Conventional overall heating or mixing methods can easily cause fine aggregate to adhere to the equipment, leading to uneven mixing and incomplete heating, thus compromising the overall performance of the recycled mixture. Currently, commonly used recycling processes often utilize segmented heating or mixing of fine and coarse aggregates. Different aggregate grades require different temperatures, with coarse aggregate requiring higher temperatures and fine aggregate requiring lower temperatures. Therefore, fine aggregate, rich in old asphalt, should be kept away from high temperatures to prevent asphalt aging. However, during production, inappropriate heating methods for different aggregate grades can lead to problems such as fine aggregate sticking to the wall and old asphalt aging.

[0003] In order to solve the above problems, an anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology is developed. Utility Model Content

[0004] In order to overcome the shortcomings of the currently commonly used recycling process, which mostly adopts the segmented heating or mixing of fine aggregate and coarse aggregate, and the different temperatures required for each grade of aggregate, unreasonable heating methods may exist for different grades of aggregate in the actual production process, resulting in fine aggregate sticking to the wall and aging of old asphalt, the utility model provides an anti-sticking recycling drum structure of oil-rich RAP based on fine screening technology.

[0005] The technical solution of the present utility model is: an anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology, including a mounting base, drive components are installed on the left and right parts of the mounting base, the drive component on the left is connected to the front drum, and the drive component on the right is connected to the rear drum, the front drum and the rear drum are both rotatably connected to the mounting base, a regeneration ring is connected between the front drum and the rear drum, a first feed port is opened on the left side of the mounting base, a combustion chamber interface is also opened on the left side of the mounting base, and a discharge port is opened on the right side of the mounting base.

[0006] Further explanation is provided, and an exhaust pipe is also included. Two exhaust pipes are connected to the upper right side of the mounting base, and a secondary cylinder is connected to the regeneration ring. The exhaust pipes are all connected to the secondary cylinder. An inspection door is rotatably connected to the left side of the secondary cylinder. Three first drive motors are installed on the secondary cylinder, and a stirring rack is connected to the output shaft of each of the first drive motors. The right side of the secondary cylinder is connected to the second feed port.

[0007] Further explanation: a second drive motor is also included. The second drive motor is installed on the right side of the secondary cylinder, and a cam is connected to the output shaft of the second drive motor.

[0008] Further description is given, and a temperature regulator is also included, and the temperature regulator is installed on each of the tail pipes.

[0009] It is further explained that the mounting base is a hollow structure, which is convenient for reducing the overall weight of the device.

[0010] It is further explained that the stirring frame is a staggered structure.

[0011] By adopting the above technical solution, the beneficial effects of the utility model are:

[0012] The utility model transmits the heat in the rear drum to the auxiliary cylinder through the exhaust pipe, so that the fine aggregate is preheated and dried, and the waste heat of the exhaust gas is utilized. The preheated fine aggregate has a certain fluidity, which can alleviate its strong adhesion and prevent the fine aggregate from sticking. The temperature regulator can ensure that the temperature inside the auxiliary cylinder is controllable, reduce or compensate the temperature inside the auxiliary cylinder, and ensure that the temperature inside the fine aggregate auxiliary cylinder is within the expected range. At the same time, the temperature in the regeneration ring and the rear drum is lower than the temperature of the front drum, which can prevent the fine aggregate from aging due to excessive temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0014] Figure 2 This is a schematic diagram of the partially sectional three-dimensional structure of the utility model from the first viewing angle.

[0015] Figure 3 This is a schematic diagram of a partial cross-sectional three-dimensional structure from a second viewing angle of the present invention.

[0016] Markings in the accompanying drawings: 1: mounting base, 2: drive assembly, 3: front roller, 4: rear roller, 5: regeneration ring, 6: first feed port, 7: combustion chamber interface, 8: discharge port, 9: tail gas pipe, 10: auxiliary cylinder, 11: inspection door, 12: first drive motor, 13: stirring frame, 14: second feed port, 15: second drive motor, 16: cam, 17: temperature regulator. DETAILED DESCRIPTION

[0017] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which presently preferred embodiments of the present invention are shown. However, the present invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and will fully convey the scope of the invention to those skilled in the art.

[0018] An anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology, such as Figure 1-Figure 3 As shown, it includes mounting bases 1, 1 and 2. The mounting base 1 is a hollow structure to reduce the overall weight of the device. Driving components 2 are installed on the left and right parts of the mounting base 1. The driving component 2 on the left is connected to the front roller 3, and the driving component 2 on the right is connected to the rear roller 4. The front roller 3 and the rear roller 4 are both rotatably connected to the mounting base 1. A regeneration ring 5 is connected between the front roller 3 and the rear roller 4. A first feed port 6 is provided on the left side of the mounting base 1, a combustion chamber interface 7 is also provided on the left side of the mounting base 1, and a discharge port 8 is provided on the right side of the mounting base 1.

[0019] like Figure 1-Figure 3 As shown, it also includes a tail gas pipe 9, two tail gas pipes 9 are connected to the upper right side of the mounting base 1, a sub-cylinder 10 is connected to the regeneration ring 5, the tail gas pipes 9 are all connected to the sub-cylinder 10, and an inspection door 11 is rotatably connected to the left side of the sub-cylinder 10. Three first drive motors 12 are installed on the sub-cylinder 10, and the output shafts of the first drive motors 12 are all connected to stirring racks 13, and the stirring racks 13 are staggered structures. The right side of the sub-cylinder 10 is connected to a second feed port 14, and the right side of the sub-cylinder 10 is installed with a second drive motor 15, and the output shaft of the second drive motor 15 is connected with a cam 16. A temperature regulator 17 is installed on the tail gas pipe 9.

[0020] It should be noted that with the increasing demand for sustainable development of resources, the recycling of old asphalt pavements has become one of the important research directions in road engineering. The traditional method of producing recycled asphalt mixture is usually to heat and mix the recycled asphalt pavement materials after milling, and then mix them with new asphalt and aggregate. In actual engineering, the 0-5mm aggregate after fine screening contains a lot of old asphalt, which has strong adhesion and large surface area. It needs to be preheated and dehydrated at an appropriate temperature. The conventional overall heating or mixing method easily causes the fine aggregate to stick to the inside of the equipment, resulting in uneven mixing and incomplete heating, thereby affecting the overall performance of the recycled mixture.

[0021] In order to solve this problem, the currently commonly used recycling process mostly adopts the method of heating or mixing fine aggregate and coarse aggregate in sections. However, the required temperature of each grade of aggregate is different. In the production process, there will be unreasonable heating methods for different grades of aggregate. The present device can use different temperatures to cope with the heating of different grades of aggregate. In actual operation, the coarse aggregate is firstly fed into the front drum 3 through the first feed port 6, and the combustion chamber interface 7 is connected to the combustion chamber, so that the coarse aggregate in the front drum 3 is heated at high temperature. At the same time, the driving component 2 drives the front drum 3 and the rear drum 4 to flip, so that the coarse aggregate is heated more evenly. The coarse aggregate is heated in turn through the front drum 3, the regeneration ring 5 and the rear drum 4, and is heated from The material is discharged from the discharge port 8. The waste heat temperature of the exhaust gas in the rear drum 4 is lower than that of the front drum 3. This part of energy can be transported to the auxiliary cylinder 10 through the exhaust pipe 9. The fine aggregate enters the auxiliary cylinder 10 through the second feed port 14. The heat in the exhaust pipe 9 will preheat the fine aggregate. The waste heat of the exhaust gas is utilized, and the first drive motor 12 is started. The output shaft of the first drive motor 12 rotates to drive the stirring frame 13 to rotate, thereby making the fine aggregate evenly heated in the auxiliary cylinder 10, preventing the fine aggregate from sticking during the preheating process. The temperature regulator 17 can ensure that the temperature inside the auxiliary cylinder 10 is controllable, reduce or compensate the temperature inside the auxiliary cylinder 10, and ensure that the temperature inside the fine aggregate auxiliary cylinder 10 is within the expected range;

[0022] When feeding through the second feed port 14, the small size of the fine aggregate may cause the second feed port 14 to be blocked, and the second drive motor 15 is started. The output shaft of the second drive motor 15 rotates to drive the cam 16 to rotate, thereby vibrating the second feed port 14 to prevent the second feed port 14 from being blocked. The inspection door 11 allows the operator to regularly clean the sticking problem caused by the heating of the fine RAP old material. The preheated fine aggregate will pass through the regeneration ring 5 into the rear drum 4, be mixed with the coarse aggregate, and then be discharged from the discharge port 8 through the lifting blades. The preheated fine aggregate has a certain fluidity, which alleviates its strong adhesion and prevents the fine aggregate from sticking. At the same time, the temperature in the regeneration ring 5 and the rear drum 4 can prevent the fine aggregate from aging due to excessive temperature.

[0023] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An anti-sticking regeneration drum structure for oil-rich RAP based on fine screening technology, characterized by: The invention comprises a mounting base (1), wherein the left and right parts of the mounting base (1) are both equipped with drive components (2), the left drive component (2) is connected to a front roller (3), and the right drive component (2) is connected to a rear roller (4), the front roller (3) and the rear roller (4) are both rotatably connected to the mounting base (1), a regeneration ring (5) is connected between the front roller (3) and the rear roller (4), a first feed port (6) is opened on the left side of the mounting base (1), a combustion chamber interface (7) is also opened on the left side of the mounting base (1), and a discharge port (8) is opened on the right side of the mounting base (1).

2. The anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology according to claim 1, characterized in that: It also includes an exhaust pipe (9), two exhaust pipes (9) are connected to the upper right side of the mounting base (1), a secondary cylinder (10) is connected to the regeneration ring (5), the exhaust pipes (9) are all connected to the secondary cylinder (10), an inspection door (11) is rotatably connected to the left side of the secondary cylinder (10), three first drive motors (12) are installed on the secondary cylinder (10), and the output shafts of the first drive motors (12) are all connected to stirring racks (13), and the right side of the secondary cylinder (10) is connected to a second feed port (14).

3. The anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology as claimed in claim 2, characterized in that: It also includes a second drive motor (15), which is installed on the right side of the secondary cylinder (10), and a cam (16) is connected to the output shaft of the second drive motor (15).

4. The anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology as claimed in claim 3, characterized in that: It also includes a temperature regulator (17), and the temperature regulator (17) is installed on each of the tail gas pipes (9).

5. The anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology according to claim 1, characterized in that: The mounting base (1) is a hollow structure, which facilitates reducing the overall weight of the device.

6. The anti-sticking regeneration drum structure of oil-rich RAP based on fine screening technology as claimed in claim 2, characterized in that: The stirring frame (13) has a staggered structure.

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