Three-stage oil-stone separation equipment for recycling asphalt pavement material
By designing a three-level oil and stone separation equipment for recycling asphalt pavement materials with multi-stage separation bins and screens, the problems of low separation efficiency, aggregate failure and high energy consumption in existing equipment are solved, and efficient framing separation and particle size analysis of coarse, medium and fine particle size materials are achieved.
Patent Information
- Application Number
- CN202510341957.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2025-05-30
AI Technical Summary
The existing oil and stone separation equipment for recycling asphalt pavement materials can easily lead to damage to coarse particle size aggregate, high energy consumption and low separation efficiency during the separation process, and it is impossible to realize particle size analysis of the materials after separation of oil and stone.
A three-level oil-stone separation equipment for recycling asphalt pavement materials was designed. By setting up first-level, second-level and third-level separation bins, the combination of multi-level screen and separation drums was used to achieve the grading separation of coarse, medium- and fine-grained materials. The equipment achieves separation of low-speed, medium-speed and high-speed oil and stone through the rotation speeds of different separation chambers and preheating of heating wires, avoiding the problems caused by a single separation speed.
The separation efficiency of oil and stone is improved, and the problems of coarse particle size aggregates are avoided and the problems of high energy consumption are high. At the same time, the particle size analysis of the separated materials is realized, reducing the cost of subsequent screening.
Smart Images
Figure CN120054762A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a three - stage oil - stone separation device for recycled asphalt pavement materials, belonging to the technical field of road engineering construction. Background Technique
[0002] The asphalt pavement recycling technology can realize the reuse of recycled asphalt pavement materials, with significant economic and social benefits, and is widely applied at home and abroad. To improve the paving quality and service life of recycled asphalt pavements, the oil - stone separation technology for recycled asphalt pavement materials has emerged. This technology heats and softens the collected recycled asphalt pavement materials, and uses principles such as centrifugation to separate asphalt and aggregates with different densities under the action of corresponding equipment, thereby achieving oil - stone separation to obtain cleaner aggregates and asphalt.
[0003] However, the existing oil - stone separation devices for recycled asphalt pavement materials use a single separator. When the separator rotates at a high speed, the separated coarse aggregates will be broken and micro - cracks will occur, affecting the mechanical properties of the separated aggregates, and maintaining a high rotation speed will result in high energy consumption. When the separator rotates at a low speed, it is difficult to separate the asphalt on the surface of the recycled asphalt pavement materials with finer particles, and the separation effect is poor. In addition, the existing oil - stone separation devices cannot perform particle size analysis on the materials after oil - stone separation, and further processes such as geometric screening are required to divide the recycled materials into different particle size specifications for use, and the process is relatively complex. Summary of the Invention
[0004] The purpose of the present invention is to provide a three - stage oil - stone separation device for recycled asphalt pavement materials. This device can achieve hierarchical separation of recycled asphalt pavement materials with coarse, medium, and fine particle sizes, improve the separation efficiency, avoid problems such as insufficient oil - stone separation, damage to coarse - particle - size aggregates, and high energy consumption caused by a single separation rotation speed, and can obtain three kinds of separated materials with different thickness specifications at one time, avoiding the site, equipment, personnel, and time costs brought by screening the separated materials.
[0005] The technical solution of the present invention: A three - stage oil - stone separation device for recycled asphalt pavement materials includes a support, on which a primary separation bin, a secondary separation bin, and a tertiary separation bin are fixedly arranged from top to bottom in sequence. Among them, a primary screen is arranged at the primary discharge port of the primary separation bin, and a secondary feed port of the secondary separation bin is arranged below the primary screen. A secondary screen is arranged at the secondary discharge port of the secondary separation bin, and a tertiary feed port of the tertiary separation bin is arranged below the secondary screen.
[0006] In the aforementioned three - stage oil - stone separation device for recycled asphalt pavement materials, the aperture of the primary screen is 10 mm, and the aperture of the secondary screen is 5 mm.
[0007] In the above-mentioned three-stage oil-stone separation equipment for recycled asphalt pavement materials, the first-stage separation bin includes a first-stage bin body. Inside the first-stage bin body, there is a first-stage separation drum. The first-stage separation drum is connected to the first-stage bin body through a rotating shaft A. On the outer wall of the first-stage separation drum, there is a separation drum gear A, and on the inner wall, there are protrusions A. The separation drum gear A meshes with the motor gear A of the first-stage motor. The first-stage motor is fixed on the first-stage bin body. At the bottom of the first-stage bin body, there is a heating wire A. At one end of the first-stage bin body, there is a first-stage feed inlet, and at the other end at the bottom, there is a first-stage discharge outlet. A first-stage screen is provided at the first-stage discharge outlet.
[0008] In the above-mentioned three-stage oil-stone separation equipment for recycled asphalt pavement materials, the second-stage separation bin includes a second-stage bin body. Inside the second-stage bin body, there is a second-stage separation drum. The second-stage separation drum is connected to the second-stage bin body through a rotating shaft B. On the outer wall of the second-stage separation drum, there is a separation drum gear B, and on the inner wall, there are protrusions B. The separation drum gear B meshes with the motor gear B of the second-stage motor. The second-stage motor is fixed on the second-stage bin body. At the bottom of the second-stage bin body, there is a heating wire B. At one end of the second-stage bin body, there is a second-stage feed inlet, and at the other end at the bottom, there is a second-stage discharge outlet. A second-stage screen is provided at the second-stage discharge outlet.
[0009] In the above-mentioned three-stage oil-stone separation equipment for recycled asphalt pavement materials, the third-stage separation bin includes a third-stage bin body. Inside the third-stage bin body, there is a third-stage separation drum. The third-stage separation drum is connected to the third-stage bin body through a rotating shaft C. On the outer wall of the third-stage separation drum, there is a separation drum gear C, and on the inner wall, there are protrusions C. The separation drum gear C meshes with the motor gear C of the third-stage motor. The third-stage motor is fixed on the third-stage bin body. At the bottom of the third-stage bin body, there is a heating wire C. At one end of the third-stage bin body, there is a third-stage feed inlet, and at the other end at the bottom, there is a third-stage discharge outlet. A third-stage screen is provided at the third-stage discharge outlet.
[0010] In the above-mentioned three-stage oil-stone separation equipment for recycled asphalt pavement materials, the first-stage separation bin, the second-stage separation bin, and the third-stage separation bin are all inclined, and the feed inlet ends are all higher than the discharge outlet ends.
[0011] In the above-mentioned three-stage oil-stone separation equipment for recycled asphalt pavement materials, the left ends of the first-stage separation bin and the third-stage separation bin are the feed inlet ends, and the right ends are the discharge outlet ends. The right end of the second-stage separation bin is the feed inlet end, and the left end is the discharge outlet end.
[0012] A method for using a three-stage oil-stone separation equipment for recycled asphalt pavement materials. First step, turn on the heating wires of each separation bin to preheat the first-stage separation drum, the second-stage separation drum, and the third-stage separation drum; Second step, turn on the first-stage motor, the second-stage motor, and the third-stage motor; Step 3: Load the recycled asphalt pavement materials into the primary feed inlet. The recycled asphalt pavement materials enter the primary separation drum for low-speed asphalt-aggregate separation. Under the action of rotation, the recycled asphalt pavement materials will collide and rub against each other and collide and rub against the protrusion A in the primary separation drum, causing the asphalt on the surface of the coarse particles to peel off. After separation, the particles smaller than the primary screen will enter the secondary feed inlet, and the particles larger than the primary screen will be discharged from the primary discharge outlet. Step 4: The materials entering the secondary feed inlet enter the secondary separation drum under the action of gravity for medium-speed asphalt-aggregate separation. After separation, the particles smaller than the secondary screen will enter the tertiary feed inlet, and the particles larger than the secondary screen will be discharged from the secondary discharge outlet. Step 5: The materials entering the tertiary feed inlet will further enter the tertiary separation drum under the action of gravity for high-speed asphalt-aggregate separation. The separated materials will be discharged from the tertiary discharge outlet under the action of gravity.
[0013] In the method for using the above-mentioned three-stage asphalt-aggregate separation equipment for recycled asphalt pavement materials, during the separation process, the rotation speed of the tertiary motor is higher than that of the secondary motor, and the rotation speed of the secondary motor is higher than that of the primary motor.
[0014] The beneficial effects of the present invention: Compared with the prior art, the present invention adopts the above technical solution. By setting multiple separation chambers, it is possible to achieve hierarchical separation of recycled asphalt pavement materials with coarse, medium, and fine particle sizes, improving the separation efficiency, avoiding problems such as insufficient asphalt-aggregate separation, damage to coarse aggregate particles, and high energy consumption caused by a single separation rotation speed, and can obtain three kinds of separated materials with different thickness specifications at one time, avoiding the costs of site, equipment, personnel, and time for screening the separated materials. Moreover, the equipment is reasonably designed, has a simple structure, and is easy to operate. Description of the Drawings
[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of the drive structure of the separation drum.
[0016] Reference numerals: 1, bracket; 1-1, connecting rod; 2, primary separation bin; 2-1, primary bin body; 2-2, primary separation drum; 2-3, rotating shaft A; 2-4, separation drum gear A; 2-5, protrusion A; 2-6, primary motor; 2-7, motor gear A; 2-8, heating wire A; 2-9, primary feed inlet; 2-10, primary screen; 2-11, primary discharge outlet; 3, secondary separation bin; 3-1, secondary bin body; 3-2, secondary separation drum; 3-3, rotating shaft B; 3-4, separation drum gear B; 3-5, protrusion B; 3-6, secondary motor; 3-7, motor gear B; 3-8, heating wire B; 3-9, secondary feed inlet; 3-10, secondary screen; 3-11, secondary discharge outlet; 4, tertiary separation bin; 4-1, tertiary bin body; 4-2, tertiary separation drum; 4-3, rotating shaft C; 4-4, separation drum gear C; 4-5, protrusion C; 4-6, tertiary motor; 4-7, motor gear C; 4-8, heating wire C; 4-9, tertiary feed inlet; 4-10, tertiary discharge outlet. Detailed implementation mode
[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but it shall not be used as a basis for limiting the present invention.
[0018] Embodiment of the present invention: A three-stage oil-stone separation device for recycling asphalt pavement materials, comprising a bracket 1. The primary separation bin 2, secondary separation bin 3 and tertiary separation bin 4 are fixedly arranged on the bracket 1 from top to bottom in sequence. Each separation bin is fixed on the bracket 1 through a plurality of connecting rods 1-1. The bracket 1 and the connecting rods 1-1 are both made of metal, and the specific number of the connecting rods 1-1 can be increased or decreased according to needs. A primary screen 2-10 is arranged at the primary discharge outlet 2-11 of the primary separation bin 2. The secondary feed inlet 3-9 of the secondary separation bin 3 is arranged below the primary screen 2-10. A secondary screen 3-10 is arranged at the secondary discharge outlet 3-11 of the secondary separation bin 3. The tertiary feed inlet 4-9 of the tertiary separation bin 4 is arranged below the secondary screen 3-10.
[0019] The aperture of the primary screen 2-10 is 10 mm, and the aperture of the secondary screen 3-10 is 5 mm. This size can correspondingly screen out materials with three different particle sizes of coarse, medium and fine.
[0020] The first-stage separation bin 2 includes a first-stage bin body 2-1. Inside the first-stage bin body 2-1, there is a first-stage separation drum 2-2. The first-stage separation drum 2-2 is connected to the first-stage bin body 2-1 through a rotating shaft A 2-3. On the outer wall of the first-stage separation drum 2-2, there is a separation drum gear A 2-4, and on the inner wall, there are protrusions A 2-5. The separation drum gear A 2-4 meshes with the motor gear A 2-7 of the first-stage motor 2-6. The first-stage motor 2-6 is fixed on the first-stage bin body 2-1. At the bottom of the first-stage bin body 2-1, there is a heating wire A 2-8. At one end of the first-stage bin body 2-1, there is a first-stage feed inlet 2-9, and at the bottom of the other end, there is a first-stage discharge outlet 2-11. On the first-stage discharge outlet 2-11, there is a first-stage screen 2-10.
[0021] The second-stage separation bin 3 includes a second-stage bin body 3-1. Inside the second-stage bin body 3-1, there is a second-stage separation drum 3-2. The second-stage separation drum 3-2 is connected to the second-stage bin body 3-1 through a rotating shaft B 3-3. On the outer wall of the second-stage separation drum 3-2, there is a separation drum gear B 3-4, and on the inner wall, there are protrusions B 3-5. The separation drum gear B 3-4 meshes with the motor gear B 3-7 of the second-stage motor 3-6. The second-stage motor 3-6 is fixed on the second-stage bin body 3-1. At the bottom of the second-stage bin body 3-1, there is a heating wire B 3-8. At one end of the second-stage bin body 3-1, there is a second-stage feed inlet 3-9, and at the bottom of the other end, there is a second-stage discharge outlet 3-11. On the second-stage discharge outlet 3-11, there is a second-stage screen 3-10.
[0022] The third-stage separation bin 4 includes a third-stage bin body 4-1. Inside the third-stage bin body 4-1, there is a third-stage separation drum 4-2. The third-stage separation drum 4-2 is connected to the third-stage bin body 4-1 through a rotating shaft C 4-4. On the outer wall of the third-stage separation drum 4-2, there is a separation drum gear C 4-4, and on the inner wall, there are protrusions C 4-5. The separation drum gear C 4-4 meshes with the motor gear C 4-7 of the third-stage motor 4-6. The third-stage motor 4-6 is fixed on the third-stage bin body 4-1. At the bottom of the third-stage bin body 4-1, there is a heating wire C 4-8. At one end of the third-stage bin body 4-1, there is a third-stage feed inlet 4-9, and at the bottom of the other end, there is a third-stage discharge outlet 4-11. On the third-stage discharge outlet 4-11, there is a third-stage screen 4-10.
[0023] The heating wires A 2-8, B 3-8, and C 4-8 are heated through an external power supply. The purpose is to heat each stage of the separation bin, so as to soften the asphalt on the recycled asphalt pavement materials in the bin, making it easier to separate.
[0024] Both the left and right ends of the primary separation drum 2-2, secondary separation drum 3-2, and tertiary separation drum 4-2 are open structures. The left end opening allows the rotating shafts A 2-3, B 3-3, C 4-3, primary feed inlet 2-9, secondary feed inlet 3-9, and tertiary feed inlet 4-9 to pass through. The right end openings of the primary separation drum 2-2, secondary separation drum 3-2, and tertiary separation drum 4-2 allow the separated materials to flow out towards the discharge port end under the action of gravity and fall into the corresponding discharge ports of each separation drum.
[0025] The rotating shafts are arranged along the length direction of the separation drum, pass through the inside of the separation drum, and the rotating shafts located inside the separation drum are fixed to the inner wall of the separation drum by multiple connecting rod members, thereby supporting the separation drum. The two ends of the rotating shafts are clamped and fixed on the silo body and can rotate along with the rotation of the separation drum.
[0026] The primary separation chamber 2, secondary separation chamber 3, and tertiary separation chamber 4 are all inclined, with the feed inlet end higher than the discharge port end, so that the material automatically rolls towards the discharge port end under the action of gravity after entering the inside of the separation drum from the inlet end, without the need to additionally set up a material conveying device. The inclination angle of each separation chamber can be set to 15° - 30°. If the inclination angle is too low, the sliding speed of the material is too slow, reducing the separation efficiency, and if the residence time of the material inside the separation drum is too long, it will also cause excessive separation of the material, and a large amount of coarse aggregate will be worn and broken. If the inclination angle is too large, the sliding speed of the material is too fast, and the material is discharged from the separation drum before being fully separated and broken. The inclination angle can be adjusted according to the production efficiency.
[0027] The left ends of the primary separation chamber 2 and tertiary separation chamber 4 are the feed inlet ends, and the right ends are the discharge port ends. The right end of the secondary separation chamber 3 is the feed inlet end, and the left end is the discharge port end. Compared with the structure where the feed inlet ends of the three separation chambers are arranged in the same direction, this setting allows the width of the support 1 to be greatly reduced under the support 1 of the same height, making the equipment smaller in size and reducing the floor area.
[0028] A method for using a three-stage oil-stone separation device for recycling asphalt pavement materials First step, turn on the heating electric wires corresponding to each separation chamber to preheat the primary separation drum 2-2, secondary separation drum 3-2, and tertiary separation drum 4-2; Second step, turn on the primary motor 2-6, secondary motor 3-6, and tertiary motor 4-6; In the third step, use a transfer machine or a crawler feeder to load the recycled asphalt pavement materials into the first-stage feed inlet 2-9. The recycled asphalt pavement materials will enter the first-stage separation drum 2-2 under the action of gravity for low-speed asphalt-aggregate separation. The recycled asphalt pavement materials will collide and rub against each other under the action of rotation, and collide and rub against the protrusion A2-5 in the first-stage separation drum 2-2, causing the asphalt on the surface of the coarse particles to peel off. The particles in the first-stage separation drum 2-2 will gradually enter the discharge port end of the first-stage separation drum 2-2 under the action of gravity. Among them, the particles smaller than the first-stage screen 2-10 will enter the second-stage feed inlet 3-9, and the particles larger than the first-stage screen 2-10 will be discharged from the first-stage discharge port 2-11; In the fourth step, the materials entering the second-stage feed inlet 3-9 will enter the second-stage separation drum 3-2 under the action of gravity for medium-speed asphalt-aggregate separation. After separation, the particles smaller than the second-stage screen 3-10 will enter the third-stage feed inlet 4-9, and the particles larger than the second-stage screen 3-10 will be discharged from the second-stage discharge port 3-11; In the fifth step, the materials entering the third-stage feed inlet 4-9 will further enter the third-stage separation drum 4-2 under the action of gravity for high-speed asphalt-aggregate separation. The separated materials will be discharged from the third-stage discharge port 4-10 under the action of gravity.
[0029] During the separation process, the rotation speed of the third-stage motor 4-6 is higher than that of the second-stage motor 3-6, and the rotation speed of the second-stage motor 3-6 is higher than that of the first-stage motor 2-6. Among them, the rotation speed of the first-stage separation drum 2-2 can be 1000-1500 revolutions per minute, the rotation speed of the second-stage separation drum 3-2 can be 1500-2000 revolutions per minute, and the rotation speed of the third-stage separation drum 4-2 can be 2000-2500 revolutions per minute. Different rotation speeds can separate materials with different particle sizes. The lower rotation speed of the first-stage separation drum 2-2 can avoid crushing the separated coarse aggregates, avoid generating microcracks, and affect the mechanical properties of the separated aggregates. Moreover, different motor rotation speeds are different, which can avoid the high energy consumption caused by all motors maintaining high rotation speeds.
Claims
1. A three-stage oil-stone separation device for recycling asphalt pavement materials, characterized by: The invention comprises a support (1), on which a first-stage separation bin (2), a second-stage separation bin (3) and a third-stage separation bin (4) are fixed in sequence from top to bottom, wherein a first-stage screen (2-10) is arranged on a first-stage discharge port (2-11) of the first-stage separation bin (2), a second-stage feed port (3-9) of the second-stage separation bin (3) is arranged below the first-stage screen (2-10), a second-stage screen (3-10) is arranged on a second-stage discharge port (3-11) of the second-stage separation bin (3), and a third-stage feed port (4-9) of the third-stage separation bin (4) is arranged below the second-stage screen (3-10).
2. The three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 1 is characterized by: The aperture of the primary sieve (2-10) is 10 mm, and the aperture of the secondary sieve (3-10) is 5 mm.
3. The three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 1 is characterized by: The first-stage separation bin (2) comprises a first-stage bin body (2-1), a first-stage separation drum (2-2) is arranged inside the first-stage bin body (2-1), the first-stage separation drum (2-2) is connected to the first-stage bin body (2-1) via a rotating shaft A (2-3), a separation drum gear A (2-4) is arranged on the outer wall of the first-stage separation drum (2-2), a protrusion A (2-5) is arranged on the inner wall, the separation drum gear A (2-4) is meshed with a motor gear A (2-7) of a first-stage motor (2-6), the first-stage motor (2-6) is fixed on the first-stage bin body (2-1), a heating wire A (2-8) is arranged at the bottom of the first-stage bin body (2-1), a first-stage feed port (2-9) is arranged at one end of the first-stage bin body (2-1), a first-stage discharge port (2-11) is arranged at the bottom of the other end, and a first-stage screen (2-10) is arranged on the first-stage discharge port (2-11).
4. The three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 1 is characterized by: The secondary separation bin (3) comprises a secondary bin body (3-1), a secondary separation drum (3-2) is arranged inside the secondary bin body (3-1), the secondary separation drum (3-2) is connected to the secondary bin body (3-1) via a rotating shaft B (3-3), a separation drum gear B (3-4) is arranged on the outer wall of the secondary separation drum (3-2), a protrusion B (3-5) is arranged on the inner wall, the separation drum gear B (3-4) is meshed with a motor gear B (3-7) of a secondary motor (3-6), the secondary motor (3-6) is fixed on the secondary bin body (3-1), a heating wire B (3-8) is arranged at the bottom of the secondary bin body (3-1), a secondary material inlet (3-9) is arranged at one end of the secondary bin body (3-1), a secondary material outlet (3-11) is arranged at the bottom of the other end, and a secondary screen (3-10) is arranged on the secondary material outlet (3-11).
5. The three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 1 is characterized by: The three-stage separation bin (4) comprises a three-stage bin body (4-1), a three-stage separation drum (4-2) is arranged inside the three-stage bin body (4-1), the three-stage separation drum (4-2) is connected to the three-stage bin body (4-1) via a rotating shaft C (4-4), a separation drum gear C (4-4) is arranged on the outer wall of the three-stage separation drum (4-2), a protrusion C (4-5) is arranged on the inner wall, the separation drum gear C (4-4) is meshed with a motor gear C (4-7) of a three-stage motor (4-6), the three-stage motor (4-6) is fixed on the three-stage bin body (4-1), a heating wire C (4-8) is arranged at the bottom of the three-stage bin body (4-1), a three-stage feed port (4-9) is arranged at one end of the three-stage bin body (4-1), a three-stage discharge port (4-11) is arranged at the bottom of the other end, and a three-stage screen (4-10) is arranged on the three-stage discharge port (4-11).
6. The three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 1 is characterized by: The first-stage separation bin (2), the second-stage separation bin (3) and the third-stage separation bin (4) are all arranged in an inclined manner, and the feed inlet ends are all higher than the discharge outlet ends.
7. The three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 6 is characterized by: The left side ends of the first-stage separation bin (2) and the third-stage separation bin (4) are feed inlets and the right side ends are discharge outlets, while the right side end of the second-stage separation bin (3) is a feed inlet and the left side end is a discharge outlet.
8. A method for using a three-stage oil-stone separation device for recycling asphalt pavement materials according to any one of claims 1 to 7, characterized in that: In the first step, the heating wires of each separation chamber are turned on to preheat the first-stage separation drum (2-2), the second-stage separation drum (3-2) and the third-stage separation drum (4-2); The second step is to turn on the first-stage motor (2-6), the second-stage motor (3-6) and the third-stage motor (4-6); In the third step, the recycled asphalt pavement material is loaded into the primary feed port (2-9), and the recycled asphalt pavement material enters the primary separation drum (2-2) for low-speed oil-stone separation. The recycled asphalt pavement material will collide and rub against each other under the action of rotation, and will collide and rub against the protrusion A (2-5) in the primary separation drum (2-2), so that the asphalt on the surface of the coarse particles will be peeled off. After separation, the particles smaller than the primary screen (2-10) will enter the secondary feed port (3-9), and the particles larger than the primary screen (2-10) will be discharged from the primary discharge port (2-11); In the fourth step, the material entering the secondary feed port (3-9) enters the secondary separation drum (3-2) under the action of gravity for medium-speed oilstone separation. After separation, particles smaller than the secondary screen (3-10) enter the tertiary feed port (4-9), and particles larger than the secondary screen (3-10) are discharged from the secondary discharge port (3-11); In the fifth step, the material entering the tertiary feed port (4-9) will further enter the tertiary separation drum (4-2) under the action of gravity for high-speed oil-stone separation, and the separated material will be discharged from the tertiary discharge port (4-10) under the action of gravity.
9. The method for using the three-stage oil-stone separation equipment for recycling asphalt pavement materials according to claim 8, characterized in that: During the separation process, the rotation speed of the tertiary motor (4-6) is higher than that of the secondary motor (3-6), and the rotation speed of the secondary motor (3-6) is higher than that of the primary motor (2-6).