A constant temperature vibration mixing device for foamed asphalt cold recycled mixture
By designing a constant-temperature vibration mixing device, the problems of uneven mixing and low efficiency of foamed asphalt mixtures were solved, achieving uniform and efficient mixing of the mixture and enhancing the scientific nature of indoor tests and the simulation capability of actual construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 南京市公路事业发展中心
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-26
AI Technical Summary
Existing foamed asphalt mixing equipment suffers from problems such as uneven mixing, low efficiency, and inability to simulate actual construction conditions, resulting in discrepancies between indoor test results and actual construction conditions, which affects the performance of foamed asphalt cold recycled mixtures.
Design a constant temperature vibration mixing device that includes a pretreatment device for recycled materials, a constant temperature protection system, a foamed asphalt injection device, and a vibration mixing device. The constant temperature system ensures a constant temperature for the recycled materials, the vibration mixing device achieves uniform and efficient mixing of the mixture, and the foamed asphalt injection device enables precise control.
It improves the mixing quality of foamed asphalt cold recycled mixtures, enhances the scientific nature of indoor tests, and can simulate the actual construction process under multiple working conditions, thereby improving the scientific nature and efficiency of mixing.
Smart Images
Figure CN224412250U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of road asphalt mixture mixing technology, and specifically relates to a constant temperature vibration mixing device for foamed asphalt cold recycled mixture. Background Technology
[0002] With the continuous development of highway transportation construction, the construction technology and requirements for road pavements are becoming increasingly complex and standardized. As one of the main forms of road pavement, the construction quality of asphalt pavement directly affects the performance and service life of the road. Against this backdrop, indoor simulation testing plays a crucial role in improving asphalt pavement construction methods. Many studies have optimized indoor testing equipment to better reflect actual construction conditions. Among these, multi-condition simulation of the asphalt mixture mixing process provides strong support for the correct application of materials, scientific pavement design, feedback on construction performance, and evaluation of road performance.
[0003] Foamed asphalt mixtures are an important pavement material, and their mixing quality significantly impacts road performance and service life. However, current indoor foamed asphalt mixture mixing equipment suffers from problems such as uneven mixing, low mixing efficiency, and inability to simulate actual construction conditions. These issues lead to discrepancies between indoor test results and actual construction conditions, thus affecting the practical performance of foamed asphalt cold recycled mixtures. Utility Model Content
[0004] The purpose of this invention is to provide a constant temperature vibration mixing device for foamed asphalt cold recycled mixtures, to solve the problems existing in the prior art, and to improve the scientific nature of indoor foamed asphalt mixture mixing.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a constant-temperature vibrating mixing device for foamed asphalt cold recycled mixture, characterized in that it includes a waste material pretreatment device, a constant-temperature protection system, a foamed asphalt injection device, and a vibrating mixing device; the waste material pretreatment device is placed inside the constant-temperature protection system, and a conduit conveying device for transporting the waste material to the vibrating mixing device is provided at the bottom of the waste material pretreatment device; the foamed asphalt injection device includes a foamed asphalt foamer and a foamed asphalt nozzle; the foamed asphalt nozzle is used to inject the foamed asphalt generated by the foamed asphalt foamer into the vibrating mixing device.
[0006] Preferably, the waste material pretreatment device includes a waste material silo for holding waste materials, a heating device for heating waste materials, and a stirring device for stirring waste materials.
[0007] Preferably, the constant temperature protection system includes an outer shell, an insulation layer, a heating device mounted on the outer shell, a controller electrically connected to the heating device, and a temperature sensor connected between the heating device and the controller.
[0008] Preferably, the vibrating mixing device includes a bottom box, a cover box, and a mixing pot for mixing materials disposed in the bottom box, and a conduit conveying device transports the old materials in the old material pretreatment device to the bottom box.
[0009] Preferably, the mixing pot includes a first motor, a vibrating stirring rod, a set of stirring blades mounted on the vibrating stirring rod, and a second motor; limit grooves are respectively opened on both sides of the cover box, and the first output shaft of the first motor is connected to the vibrating stirring rod through a first transmission mechanism to drive the vibrating stirring rod to rotate.
[0010] Preferably, a second transmission mechanism is also included, which includes a slider installed in the limiting groove. The bottom of the slider is connected to an eccentric wheel via an eccentric connecting rod. The eccentric wheel is coaxially connected to the output shaft of the second motor via a flexible coupling (elastic pin coupling), which is used to drive the slider to reciprocate up and down along the limiting groove by rotating the eccentric wheel when the motor is running.
[0011] Preferably, the slider has a limiting hole in the middle, the vibrating stirring rod passes through the limiting hole and is connected to the output shaft of the first motor for transmission, and a rubber ring is provided between the limiting hole and the vibrating stirring rod.
[0012] Preferably, a flexible damping pad or a rubber vibration isolation layer is provided between the slider and the limiting groove.
[0013] Preferably, the bottom box is provided with an injection port for receiving foamed asphalt nozzle spray and water injection.
[0014] Preferably, the device also includes a fixed column and a tilting control device, with both ends of the vibrating mixing device mounted on the fixed column via the tilting control device.
[0015] When the flipping control device is turned off, the vibrating mixing device is fixedly connected to the fixed column, and the vibrating mixing device is in the state of bottom box down and top box up;
[0016] When the flipping control device is turned on, the vibrating mixing device is movably connected to the fixed column, flipping the vibrating mixing device 180° so that the bottom box is on top and the top box is on the bottom.
[0017] The beneficial effects of this utility model are:
[0018] 1. This utility model pre-treats recycled materials by adjusting a constant temperature system, ensuring that the recycled materials are mixed with foamed asphalt under the condition of constant temperature.
[0019] 2. The vibration mixing device designed in this utility model can achieve uniform and efficient mixing of the mixture; the adjustable foamed asphalt injection device can achieve precise control of the amount of foamed asphalt, so as to adapt to the mixing needs of foamed asphalt mixture under multiple working conditions in actual construction, improve the mixing quality of foamed asphalt cold recycled mixture, and improve the scientific nature of indoor foamed asphalt mixture mixing. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0021] Figure 1 This is a three-dimensional schematic diagram of the constant temperature vibration mixing device in the embodiment of this utility model.
[0022] Figure 2 This is a foamed asphalt injection device in an embodiment of the present invention.
[0023] Figure 3 This is a top view of the waste material pretreatment device in an embodiment of the present invention.
[0024] Figure 4 This is a schematic diagram of the internal structure of the mixing pot lid box in an embodiment of the present invention.
[0025] Figure 5 This is a schematic diagram of the structural principle of the vibrating stirring rod drive mechanism in an embodiment of this utility model.
[0026] Figure 6 This is a schematic diagram of the second motor driving the eccentric wheel in an embodiment of this utility model.
[0027] Explanation of reference numerals in the attached drawings: 1. Reclaimed material pretreatment device; 1-1. Reclaimed material silo; 1-2. Mixing device; 2. Constant temperature protection system; 2-1. Outer shell; 2-2. Insulation layer; 3. Foamed asphalt injection device; 3-1. Foamed asphalt foamer; 3-2. Foamed asphalt nozzle; 4. Vibrating mixing device; 4-1. Bottom box; 4-2. Cover box; 4-2-1. Limiting chute; 4-3. Mixing pot; 4-3-1. First motor; 4-3-2. Vibrating mixing rod; 4-3-3. Mixing fan blade; 4-3-4. Second motor; 5. Conduit conveying device; 6. Fixed column; 7. Tilting control device; 8. Injection port; 9. Cover plate; 10. Sliding block; 11. Eccentric wheel; 12. Eccentric connecting rod; 13. Limiting hole. Detailed Implementation
[0028] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0029] This embodiment provides a constant-temperature vibration mixing device for foamed asphalt cold recycled mixtures, such as... Figures 1-6 As shown, the system includes a waste material pretreatment device 1, a constant temperature protection system 2, a foamed asphalt injection device 3, and a vibrating mixing device 4. Specifically: the waste material pretreatment device 1 is located inside the constant temperature protection system 2, and a conduit conveying device 5 is installed at the bottom of the waste material pretreatment device 1 to transport the waste material to the vibrating mixing device 4; the foamed asphalt injection device 3 includes a foamed asphalt foamer 3-1 and a foamed asphalt nozzle 3-2; the foamed asphalt nozzle 3-2 is used to inject the foamed asphalt generated by the foamed asphalt foamer 3-1 into the vibrating mixing device 4.
[0030] Preferably, the waste material pretreatment device 1 includes a waste material bin 1-1 for holding waste materials, a heating device for heating the waste materials, and a stirring device 1-2 for stirring the waste materials.
[0031] As a preferred embodiment, the constant temperature protection system 2 includes an outer shell 2-1, an insulation layer 2-2, a heating device mounted on the outer shell, a controller electrically connected to the heating device, and a temperature sensor connected between the heating device and the controller.
[0032] Preferably, the vibrating mixing device 4 includes a bottom box 4-1, a cover box 4-2, and a mixing pot 4-3 disposed in the bottom box 4-1, and the conduit conveying device 5 transports the old material in the old material pretreatment device 2 to the bottom box 4-1.
[0033] Preferably, the mixing pot 4-3 includes a first motor 4-3-1, a vibrating stirring rod 4-3-2, and a set of stirring blades 4-3-3 mounted on the vibrating stirring rod 4-3-2. Limiting grooves 4-2-1 are provided on both sides of the cover box 4-2, and sliders 10 are installed in the limiting grooves. A waist-shaped limiting hole 13 is provided in the middle of the slider 10. The vibrating stirring rod 4-3-2 passes through the limiting hole 13 and is connected to the first output shaft of the first motor 4-3-1 for driving the vibrating stirring rod 4-3-2 to rotate when the first motor is running.
[0034] Preferably, the bottom of the slider 10 is connected to the eccentric wheel 11 via an eccentric connecting rod 12. The eccentric wheel 11 is coaxially mounted on the output shaft of the second motor 4-3-4 via a flexible coupling (elastic pin coupling). When the motor is running, the eccentric wheel rotates to drive the slider 10 to make high-frequency, low-amplitude reciprocating motion along the limiting groove. This, in turn, drives the vibrating stirring rod 4-3-2 to achieve high-frequency vibration motion via a rubber ring, thus realizing a combined mixing of rotation and up-and-down vibration. At the same time, the high-frequency vibration impact force generated by the vibrating stirring rod is mainly absorbed by the damping of the mixture in the mixing pot. The actual kinetic energy transmitted to the transmission structure is limited, and the device operates non-continuously with a short vibration duration, which will not cause long-term fatigue to the related equipment.
[0035] Preferably, the bottom box 4-1 is provided with three injection ports 8 for receiving spray from foamed asphalt nozzles 3-2 and water injection.
[0036] As a preferred embodiment, this embodiment also includes a fixed column 6 and a flipping control device 7. The flipping control device in this embodiment is the WLM30 product of Wirtgen, Germany. Both ends of the vibrating mixing device 4 are installed on the fixed column 6 through the flipping control device 7. The flipping control device 7 has a built-in strong magnetic force limiting structure and is controlled by a jog switch. After the magnetic force limiting is released, the mixing pot 4-3 is flipped 360° manually.
[0037] When the flipping control device is turned off, the vibrating mixing device 4 is fixedly connected to the fixed column 6, and the vibrating mixing device 4 is in the state with the bottom box 4-1 at the bottom and the top box 4-2 at the top.
[0038] When the flipping control device is turned on, the vibrating mixing device 4 is movably connected to the fixed column 6, and the vibrating mixing device 4 is flipped 180°, so that the bottom box 4-1 is on top and the cover box 4-2 is on the bottom.
[0039] Preferably, a cover plate 9 is hinged above the injection port in this embodiment.
[0040] Preferably, an elastic hinge is provided between the bottom of the slider 10 and the eccentric connecting rod 12 to reduce hard impact.
[0041] Preferably, the first transmission mechanism between the output shaft of the first motor 4-3-1 and the vibrating stirring rod 4-3-2 can use a flexible coupling, such as a plum blossom-shaped coupling, to absorb minor coaxial errors and impacts.
[0042] Preferably, a flexible coupling, such as an elastic pin coupling, can be used in the transmission mechanism between the output shaft of the second motor 4-3-4 and the eccentric wheel 11 to absorb the vibration and impact generated by the eccentric wheel 11, and to compensate for the small deviation between the motor shaft and the center of the eccentric wheel, thereby reducing the impact on the bearings and extending their service life.
[0043] Preferably, the eccentric wheel 11 can be designed as an adjustable eccentricity structure, such as a grooved adjustable eccentric block, which allows users to adjust the amplitude according to different mixing intensity requirements.
[0044] Preferably, rubber pads or spring shock absorbers are installed at the bottom of the base box 4-1 or the bottom of the overall device support to absorb vibration impact, reduce the upward transmission of vibration at the frame level, and improve the stability and durability of the device.
[0045] This utility model discloses a test method for a constant-temperature vibration mixing device for foamed asphalt cold recycled mixtures:
[0046] The first step is to put the old material into the old material silo, heat the old material with a heating device, stir the old material with a stirring device, and transport the old material to the bottom box through a conduit conveying device.
[0047] The second step is to turn on the mixing pot tilting control device, manually tilt the mixing pot 180° up and down, and start the vibration mixing device.
[0048] The third step is to pause the vibratory mixing device, inject an appropriate amount of water through the foamed asphalt injection port, restart the vibratory mixing device, and stop it after mixing for a certain period of time.
[0049] The fourth step involves generating foamed asphalt using a foamed asphalt foaming device. The foamed asphalt sprayed from the foamed asphalt nozzle is then injected into the mixing pot through the foamed asphalt injection port.
[0050] In the fifth step, while the first motor drives the vibrating agitator to rotate, the second motor drives the slider to slide up and down along the limiting groove through the eccentric wheel, causing the vibrating agitator to vibrate up and down. Thus, under the combined action of rotation and vibration, the agitator blades are driven to fully mix the mixture.
[0051] In this embodiment, a temperature sensor detects the temperature inside the outer casing, and a controller controls the operation of the heating device to maintain a constant temperature inside the casing. Pre-treatment of the recycled material can be performed by adjusting the temperature of the constant temperature system. The uniformity of foamed asphalt spraying can be altered by setting the position and number of foamed asphalt injection ports, thus achieving efficient utilization of the foamed asphalt. A vibrating mixing device enables efficient and uniform mixing of the mixture, simulating the actual mixing conditions of foamed asphalt mixtures under various working conditions during actual construction, thereby improving the scientific nature of indoor foamed asphalt mixture mixing.
[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A thermostatic vibration mixing device for foamed asphalt cold recycled mixture, characterized in that, It includes a pre-treatment device for old materials (1), a constant temperature protection system (2), a foamed asphalt injection device (3), and a vibrating mixing device (4). The old material pretreatment device (1) is placed inside the constant temperature protection system (2). The bottom of the old material pretreatment device (1) is provided with a conduit conveying device (5) for transporting the old material to the vibrating mixing device (4). The foamed asphalt injection device (3) includes a foamed asphalt foamer (3-1) and a foamed asphalt nozzle (3-2). The foamed asphalt nozzle (3-2) is used to inject the foamed asphalt generated by the foamed asphalt foamer (3-1) into the vibrating mixing device (4).
2. The constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 1, characterized in that, The old material pretreatment device (1) includes an old material silo (1-1) for holding old materials, a heating device for heating the old materials, and a stirring device (1-2) for stirring the old materials.
3. The constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 2, characterized in that, The constant temperature protection system (2) includes an outer shell (2-1), an insulation layer (2-2), a heating device installed on the outer shell, a controller electrically connected to the heating device, and a temperature sensor connected between the heating device and the controller.
4. The constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 1, characterized in that, The vibrating mixing device (4) includes a bottom box (4-1), a cover box (4-2), and a mixing pot (4-3) set in the bottom box (4-1). The conduit conveying device (5) transports the old material in the old material pretreatment device (1) to the bottom box (4-1).
5. A constant-temperature vibrating mixing device for foamed asphalt cold recycled mixture according to claim 4, characterized in that, The mixing pot (4-3) includes a first motor (4-3-1), a vibrating stirring rod (4-3-2), a set of stirring blades (4-3-3) mounted on the vibrating stirring rod (4-3-2), and a second motor (4-3-4). Limiting grooves (4-2-1) are respectively provided on both sides of the cover box (4-2). The output shaft of the first motor (4-3-1) is connected to the vibrating stirring rod (4-3-2) through the first transmission mechanism to drive the vibrating stirring rod (4-3-2) to rotate.
6. A constant-temperature vibrating mixing device for foamed asphalt cold recycled mixture according to claim 5, characterized in that, It also includes a second transmission mechanism, which includes a slider (10) installed in the limiting groove (4-2-1). The bottom of the slider (10) is connected to an eccentric wheel (11) through an eccentric connecting rod (12). The eccentric wheel (11) is coaxially connected to the output shaft of the second motor (4-3-4) through a flexible coupling. It is used to drive the slider (10) to move up and down along the limiting groove (4-2-1) by rotating the eccentric wheel when the motor is running.
7. A constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 6, characterized in that, The slider (10) has a limiting hole (13) in the middle. The vibrating stirring rod (4-3-2) passes through the limiting hole (13) and is connected to the output shaft of the first motor (4-3-1). A rubber ring is provided between the limiting hole (13) and the vibrating stirring rod (4-3-2).
8. A constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 5, characterized in that, A flexible damping pad or rubber vibration isolation layer is provided between the slider (10) and the limiting groove (4-2-1).
9. A constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 4, characterized in that, The bottom box (4-1) is provided with an injection port for receiving spray from foamed asphalt nozzles (3-2) and water injection.
10. A constant-temperature vibratory mixing device for foamed asphalt cold recycled mixture according to claim 4, characterized in that, It also includes a fixed column (6) and a flipping control device (7), wherein the two ends of the vibration mixing device (4) are mounted on the fixed column (6) through the flipping control device (7); When the flipping control device is turned off, the vibrating mixing device (4) is fixedly connected to the fixed column (6), and the vibrating mixing device (4) is in a state where the bottom box (4-1) is below and the top box (4-2) is above. When the flipping control device is turned on, the vibrating mixing device (4) is movably connected to the fixed column (6), and the vibrating mixing device (4) is flipped 180°, so that the bottom box (4-1) is on top and the cover box (4-2) is on the bottom.