A regenerative asphalt mixture stripping device
Patent Information
- Application Number
- CN202521272546.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-20
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-06-20
AI Technical Summary
[0005]为此，本实用新型的一个目的在于提出一种再生沥青混合料剥离装置，以解决背景技术中所提到的问题，克服现有技术中存在的不足
[0032]该再生沥青混合料剥离装置，通过仓体、粉碎辊、加热板、内缘、底道的配合设置，利用其表面的粉碎齿对沥青废块进行破碎，仓体的仓壁为斜向的，仓壁上安装加热板和其顶端斜向的内缘，两个加热板配合内缘将粉碎辊破碎区域包围在内，形成一个加热空间，通过PLC温度控制实现60-90℃的低温加热破碎。该设计可软化沥青粘结层，使骨料剥离率大幅度提高，加热板与内缘形成的定向加热腔，使热效率提升，对粉碎区进行充分加热。
Smart Images
Figure CN224884517U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of recycled asphalt processing technology, and in particular to a recycled asphalt mixture stripping device. Background Technology
[0002] With the rapid development of road maintenance projects, the recycling of large quantities of waste asphalt mixtures has become an important issue in the field of resource recycling. Statistics show that my country generates over 300 million tons of waste asphalt mixtures annually. Effective recycling of these mixtures can not only alleviate the shortage of natural aggregate resources but also reduce the environmental pressure caused by solid waste accumulation. Traditional recycling processes mainly employ cold milling-crushing and screening technology, but this technology suffers from technical bottlenecks such as low aggregate-asphalt separation rates (typically <75%) and severe fine aggregate coating, making it difficult for recycled aggregates to meet the requirements of high-grade roads.
[0003] Therefore, there is an urgent need in this field to develop a new type of recycled asphalt mixture stripping device that can achieve low-temperature and efficient stripping of asphalt material under the premise of optimizing the thermal field distribution, while solving the technical problems of high energy consumption, large aggregate damage, and incomplete grading of existing equipment. Utility Model Content
[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0005] Therefore, one objective of this utility model is to provide a stripping device for recycled asphalt mixtures to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.
[0006] To achieve the above objectives, one embodiment of the present invention provides a recycled asphalt mixture stripping device, including a frame, a bin body, and a bin cover. The bin body is fixedly connected to the top of the frame, and the top of the bin body has an inclined bin opening. The bin cover is movably connected to the bin opening of the bin body, and an electric cylinder is movably connected to the inner side of the bin body. The end of the output end of the electric cylinder is movably connected to the middle part of the edge of the bin cover.
[0007] The inner width of the chamber decreases from top to bottom. Two sets of opposing rotating crushing rollers are movably connected to the inner side of the chamber. Several protruding crushing teeth are fixedly connected to the outer surface of the crushing rollers.
[0008] A heating plate is fixedly connected to the wall of the hopper, and an inward-facing inner edge is fixedly connected to the top of the heating plate.
[0009] The heating plate has a built-in heating wire, the bottom of the chamber is fixedly connected to a bottom channel, a motor is installed at the outer end of the bottom channel, the output end of the motor is fixedly connected to a screw, and a motor that powers the crushing roller is installed on the outside of the chamber.
[0010] The bottom channel is fixedly connected to a discharge port, the bottom of the discharge port is fixedly connected to a screen plate, the two sides and the top of the screen plate are fixedly connected to baffles, and a vibration motor is fixedly connected to one of the baffles.
[0011] Preferably, as described in any of the above embodiments, the compartment cover is equipped with a tempered glass observation window, and the compartment cover can be automatically opened and closed.
[0012] The above technical solution is adopted: This device is specially used for crushing old asphalt waste blocks and realizing the separation of coarse aggregate (stone) and fine material.
[0013] The overall workflow of the device is as follows: the output end of the electric cylinder pushes out, the bin cover opens, the motor starts, and the two crushing rollers inside the bin rotate in opposite directions. The crushing teeth on their surfaces break down the asphalt waste blocks. The bin walls are sloping, and heating plates and their sloping inner edges are installed on the walls. The two heating plates, together with the inner edges, surround the crushing area of the crushing rollers, forming a heated space. Low-temperature heating and crushing at 60-90℃ is achieved through PLC temperature control. This design softens the asphalt binder layer, significantly improving the aggregate stripping rate.
[0014] The crushed asphalt material enters the bottom channel, the corresponding motor works, the screw rotates, driving the crushed material to be output from the outlet and fall onto the screen plate. The screen plate vibrates under the action of the vibrating motor. Large particles of crushed stone slide down the screen plate and are output, while fine material passes through the screen plate and is output, realizing the stripping of asphalt recycled material.
[0015] Preferably, in any of the above embodiments, the crushing rollers are located between the heating plates and are parallel to each other.
[0016] The device consists of the following components:
[0017] This device comprises the following core structures: a frame serving as the main supporting framework, with a bin body welded to the top. An angled opening is formed at the top of the bin body, and a bin cover is hinged to the opening. The bin cover is equipped with a tempered glass observation window for real-time monitoring of the breakage status. The piston rod of the electric cylinder is hinged to the edge of the bin cover, enabling automatic opening and closing of the cover.
[0018] The chamber adopts an internally decreasing width structure (1200mm at the top and 800mm at the bottom), with two sets of symmetrically installed inclined heating plates on the inner wall. The heating plates contain built-in nickel-chromium heating wires, and the heating temperature is precisely controlled within the range of 60-90℃ via PLC. The top of heating plate 6 extends with a 30° inclined inner edge, forming a semi-enclosed heating chamber with the opposite heating plate, completely surrounding the crushing roller within the heating area.
[0019] The crushing rollers are arranged in parallel between the heating plates, with conical crushing teeth of 50mm height staggered on the surface of the two rollers. The roller spacing is adjustable (10-30mm). The crushing rollers are driven by a 15kW motor on the outside of the chamber through a gear set, achieving counter-rotation at 200-400r / min.
[0020] The bottom channel connects to the bottom opening of the silo and contains a variable-diameter screw. The screw has a large end diameter of 300mm (feed section) and a small end diameter of 200mm (discharge section), with the pitch decreasing from 150mm to 80mm. A 7.5kW motor drives the screw to rotate at 20-40r / min, achieving uniform conveying of the crushed material.
[0021] The screen plate is installed at a 30° angle below the discharge port. The vibrating motor generates a high-frequency vibration of 2000 times / minute, which, together with the baffle, forms a directional sliding channel, allowing coarse aggregate to slide out along the inclined surface of the screen plate, while fine material falls vertically to be collected.
[0022] Preferably, in any of the above embodiments, the heating plate is installed by screws and is angled.
[0023] Using the above technical solution, the workflow is divided into three stages:
[0024] Feeding and crushing stage: The electric cylinder pushes out to open the bin cover, and after the asphalt waste blocks are fed in, the bin cover is closed. The heating plate is energized and heated to 70°C, softening the asphalt. The crushing rollers rotate in opposite directions, and the crushing teeth peel off the aggregate bonding layer in the heated environment.
[0025] Material conveying stage: Crushed material falls from the bottom of the silo into the bottom channel, and the screw pushes the material to the discharge port at a speed of 25 r / min. The variable diameter design generates a squeezing effect to prevent fine material from adhering to the screw.
[0026] Grading and screening stage: The mixture falls onto the screen plate through the discharge port, and the vibrating motor drives the screen plate to vibrate at high frequency. Fine materials with a particle size of <5mm pass through the screen holes and are collected directly, while coarse aggregates with a particle size of >5mm slide down the inclined surface of the screen plate into the collection hopper, achieving a separation efficiency of over 98%.
[0027] Preferably, in any of the above embodiments, the angle between the heating plate and the inner edge is an obtuse angle, and the bottom channel is connected to the bottom opening of the compartment.
[0028] The directional heating cavity formed by the heating plate and the inner edge improves thermal efficiency and fully heats the crushing zone.
[0029] The coordinated layout of the crushing roller and the heating plate ensures that the aggregate is peeled off in a softened state, greatly improving the peeling rate.
[0030] Preferably, in any of the above embodiments, the screw is movably connected inside the bottom channel, the screen plate is arranged obliquely, and the screen plate has densely packed screen holes.
[0031] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:
[0032] This recycled asphalt mixture stripping device, through the coordinated arrangement of a bin, crushing rollers, heating plates, inner edge, and bottom channel, utilizes the crushing teeth on its surface to break up asphalt waste blocks. The bin walls are sloping, and heating plates and their sloping inner edges are installed on the bin walls. The two heating plates, together with the inner edge, surround the crushing area of the crushing rollers, forming a heated space. Low-temperature heating and crushing at 60-90℃ is achieved through PLC temperature control. This design softens the asphalt binder layer, significantly increasing the aggregate stripping rate. The directional heating cavity formed by the heating plates and inner edge enhances thermal efficiency, ensuring thorough heating of the crushing zone.
[0033] The coordinated layout of the crushing roller and the heating plate ensures that the aggregate is peeled off in a softened state, greatly improving the peeling rate.
[0034] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0035] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0036] Figure 1 This is a first-view structural schematic diagram of the present invention;
[0037] Figure 2 This is a structural schematic diagram of the present invention from a second perspective;
[0038] Figure 3 This is a schematic diagram of the structure of the sieve plate of this utility model;
[0039] Figure 4 This is a schematic diagram of the structure of the discharge port of this utility model.
[0040] In the diagram: 1-Frame, 2-Blouse, 3-Blouse cover, 4-Electric cylinder, 5-Crushing roller, 6-Heating plate, 7-Inner edge, 8-Bottom channel, 9-Motor, 10-Screw, 11-Discharge port, 12-Screw plate, 13-Baffle, 14-Vibration motor. Detailed Implementation
[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0043] like Figure 1-4 As shown, this recycled asphalt mixture stripping device includes a frame 1, a bin 2, and a bin cover 3. The top of the frame 1 is fixedly connected to the bin 2. The top of the bin 2 has an inclined bin opening. The bin cover 3 is movably connected to the bin opening of the bin 2. An electric cylinder 4 is movably connected to the inner side of the bin 2. The end of the output end of the electric cylinder 4 is movably connected to the middle part of the edge of the bin cover 3.
[0044] The inner width of the chamber 2 decreases from top to bottom. Two sets of opposing rotating crushing rollers 5 are movably connected to the inner side of the chamber 2. Several protruding crushing teeth are fixedly connected to the outer surface of the crushing rollers 5.
[0045] A heating plate 6 is fixedly connected to the wall of the compartment 2, and an inward-facing inner edge 7 is fixedly connected to the top of the heating plate 6;
[0046] The heating plate 6 has a built-in heating wire. The bottom of the chamber 2 is fixedly connected to the bottom channel 8. The outer end of the bottom channel 8 is equipped with a motor 9. The output end of the motor 9 is fixedly connected to the screw 10. The power source motor 9 of the crushing roller 5 is installed on the outside of the chamber 2.
[0047] The bottom channel 8 is fixedly connected to the end of the discharge port 11, the bottom of the discharge port 11 is fixedly connected to the screen plate 12, the two sides and the top of the screen plate 12 are fixedly connected to the baffle 13, and a vibration motor 14 is fixedly connected to one of the baffles 13.
[0048] Example 1: A tempered glass observation window is installed on the bin cover 3, which can open and close automatically. This device is specifically designed for crushing old asphalt waste blocks and separating coarse aggregate (stone) from fine aggregate. The crushing rollers 5 are located between the heating plates 6, and the crushing rollers 5 are parallel to each other. The heating plates 6 are installed by screws and are set at an angle. The angle between the heating plate 6 and the inner edge 7 is an obtuse angle, and the bottom channel 8 is connected to the bottom opening of the bin body 2. The screw 10 is movably connected inside the bottom channel 8, and the screen plate 12 is set at an angle with densely packed screen holes.
[0049] Example 2: Overall working process of the device: The output end of the electric cylinder 4 pushes out, the bin cover 3 opens, the motor 9 starts, driving the two crushing rollers 5 inside the bin 2 to rotate in opposite directions. The crushing teeth on their surfaces crush the asphalt waste blocks. The bin wall of the bin 2 is inclined, and heating plates 6 and their inclined inner edges 7 are installed on the bin wall. The two heating plates 6, together with the inner edges 7, surround the crushing area of the crushing rollers 5, forming a heating space. Low-temperature heating and crushing at 60-90℃ is achieved through PLC temperature control. This design can soften the asphalt binder layer, significantly improving the aggregate stripping rate.
[0050] The crushed asphalt material enters the bottom channel 8, and the corresponding motor 9 operates, causing the screw 10 to rotate. This drives the crushed material to be output from the outlet 11 and fall onto the screen plate 12. The screen plate 12 vibrates under the action of the vibrating motor 14. Large particles of crushed stone slide down the screen plate 12 and are output, while fine particles pass through the screen plate 12 and are output, thus realizing the stripping of the asphalt recycled material. The device consists of the following components:
[0051] This device comprises the following core structures: a frame 1 serves as the main supporting framework, with a bin 2 welded to the top. The top of the bin 2 has an angled opening, to which a bin cover 3 is hinged. The bin cover 3 is equipped with a tempered glass observation window for real-time monitoring of the breakage status. The piston rod of the electric cylinder 4 is hinged to the edge of the bin cover 3, enabling automatic opening and closing of the bin cover 3.
[0052] The chamber 2 adopts an inner width decreasing structure (1200mm at the top and 800mm at the bottom), with two sets of inclined heating plates 6 symmetrically installed on the inner wall. The heating plates 6 have built-in nickel-chromium heating wires, and the heating temperature is precisely controlled within the range of 60-90℃ by a PLC. The top of the heating plate 6 extends with a 30° inclined inner edge 7, forming a semi-enclosed heating chamber with the opposite heating plate, completely surrounding the crushing roller 5 within the heating area.
[0053] The crushing rollers 5 are arranged in parallel between the heating plates 6, with conical crushing teeth of 50mm height staggered on the surface of the two rollers. The roller spacing is adjustable (10-30mm). The crushing rollers 5 are driven by a 15kW motor 9 on the outside of the chamber 2 through a gear set to achieve counter-rotation at 200-400r / min.
[0054] Bottom channel 8 connects to the bottom opening of bin 2 and contains a variable diameter screw 10. The screw 10 has a large end diameter of 300mm (feed section) and a small end diameter of 200mm (discharge section), with the pitch decreasing from 150mm to 80mm. A 7.5kW motor 9 drives the screw 10 to rotate at 20-40r / min, achieving uniform conveying of the crushed material.
[0055] The sieve plate 12 is installed at a 30° angle below the discharge port 11. The sieve hole diameter is divided into two levels: the front end with a 5mm hole diameter removes fine materials, and the rear end with a 10mm hole diameter separates coarse aggregates. The vibrating motor 14 generates a high-frequency vibration of 2000 times / minute, which, together with the baffle 13, forms a directional sliding channel, allowing the coarse aggregates to slide out along the inclined surface of the sieve plate 12, while the fine materials fall vertically for collection.
[0056] Example 3: The core design of this device: the directional heating cavity formed by the heating plate 6 and the inner edge 7 improves thermal efficiency and fully heats the crushing zone.
[0057] The coordinated arrangement of the crushing roller 5 and the heating plate 6 ensures that the aggregate is peeled off in a softened state, greatly improving the peeling rate.
[0058] The working principle of this utility model is as follows:
[0059] The workflow is divided into three stages:
[0060] Feeding and crushing stage: The electric cylinder 4 pushes out to open the bin cover 3, and after the asphalt waste blocks are fed in, the bin cover 3 closes. The heating plate 6 is energized and heated to 70°C to soften the asphalt. The crushing rollers 5 rotate in opposite directions, and the crushing teeth peel off the aggregate bonding layer in the heated environment.
[0061] Material conveying stage: Crushed material falls from the bottom of bin 2 into the bottom channel 8, and screw 10 pushes the material to discharge port 11 at a speed of 25 r / min. The variable diameter design generates a squeezing effect to prevent fine material from adhering to the screw.
[0062] Grading and screening stage: The mixture falls from the discharge port 11 to the screen plate 12, and the vibrating motor 14 drives the screen plate 12 to vibrate at high frequency. Fine materials with a particle size <5mm pass through the screen holes and are collected directly, while coarse aggregates >5mm slide along the inclined surface of the screen plate 12 into a collection hopper, achieving a separation efficiency of over 98%.
[0063] Compared with the prior art, the present invention has the following advantages:
[0064] This recycled asphalt mixture stripping device, through the coordinated arrangement of a bin 2, crushing roller 5, heating plate 6, inner edge 7, and bottom channel 8, utilizes the crushing teeth on its surface to crush asphalt waste blocks. The bin 2 has an inclined wall, on which heating plate 6 and its inclined inner edge 7 are installed. The two heating plates 6, together with the inner edge 7, surround the crushing area of the crushing roller 5, forming a heated space. Low-temperature heating and crushing at 60-90℃ is achieved through PLC temperature control. This design softens the asphalt binder layer, significantly increasing the aggregate stripping rate. The directional heating cavity formed by the heating plate 6 and the inner edge 7 improves thermal efficiency, ensuring sufficient heating of the crushing area.
[0065] The coordinated arrangement of the crushing roller 5 and the heating plate 6 ensures that the aggregate is peeled off in a softened state, greatly improving the peeling rate.
Claims
1. A stripping device for recycled asphalt mixture, characterized in that, The machine includes a frame (1), a compartment (2), and a compartment cover (3). The top of the frame (1) is fixedly connected to the compartment (2). The top of the compartment (2) has an inclined compartment opening. The compartment cover (3) is movably connected to the compartment opening of the compartment (2). An electric cylinder (4) is movably connected to the inner side of the compartment (2). The end of the output end of the electric cylinder (4) is movably connected to the middle part of the edge of the compartment cover (3). The inner width of the chamber (2) decreases from top to bottom. Two sets of opposing rotating crushing rollers (5) are movably connected to the inner side of the chamber (2). Several protruding crushing teeth are fixedly connected to the outer surface of the crushing rollers (5). A heating plate (6) is fixedly connected to the wall of the chamber (2), and an inward-facing inner edge (7) is fixedly connected to the top of the heating plate (6); The heating plate (6) has an internal heating wire, the bottom of the chamber (2) is fixedly connected to a bottom channel (8), the outer end of the bottom channel (8) is equipped with a motor (9), the output end of the motor (9) is fixedly connected to a screw (10), and the outside of the chamber (2) is equipped with a motor (9) that is the power source of the crushing roller (5). The bottom channel (8) is fixedly connected to a discharge port (11), and a screen plate (12) is fixedly connected to the bottom of the discharge port (11). Baffles (13) are fixedly connected to both sides and the top of the screen plate (12), and a vibration motor (14) is fixedly connected to one of the baffles (13).
2. The recycled asphalt mixture stripping device as described in claim 1, characterized in that: The compartment cover (3) is equipped with a tempered glass observation window, and the compartment cover (3) can be opened and closed automatically.
3. The recycled asphalt mixture stripping device as described in claim 2, characterized in that: The crushing rollers (5) are located between the heating plates (6), and the crushing rollers (5) are parallel to each other.
4. The recycled asphalt mixture stripping device as described in claim 3, characterized in that: The heating plate (6) is installed by screws and is set at an angle.
5. A recycled asphalt mixture stripping device as described in claim 4, characterized in that: The angle between the heating plate (6) and the inner edge (7) is an obtuse angle, and the bottom channel (8) is connected to the bottom opening of the compartment (2).
6. A recycled asphalt mixture stripping device as described in claim 5, characterized in that: The screw (10) is movably connected inside the bottom channel (8), the sieve plate (12) is obliquely arranged, and the sieve plate (12) has dense sieve holes.