Testing device for emulsified asphalt evaporation residue preparation and automatic content determination

Abstract

The utility model discloses a test device for emulsified asphalt evaporation residue preparation and automatic content determination, which relates to the technical field of emulsified asphalt test devices and comprises an environmental box, a weighing device is arranged in the environmental box, a base is arranged at the top of the weighing device, a heating pot is arranged at the top of the base, a stirring mechanism is arranged in the heating pot, and a stirring mechanism is arranged in the stirring mechanism. A lifting mechanism is arranged on the top of the environment box, and a controller is fixedly arranged on the front side of the environment box. A large amount of emulsified asphalt evaporation residues can be prepared through the heating pot to be used for testing three conventional indexes and other indexes, the heating intensity and the stirring speed in the experiment process are set by the controller, and the controller can monitor the mass change of emulsified asphalt in real time and automatically judge the experiment end point, so that the experiment efficiency is improved. The accuracy and scientificity of evaporation residue content determination are improved, the whole experiment process can be automatically carried out in a closed environment, the risk that personnel are exposed to harmful gas is reduced, and the personal safety of experimenters is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of emulsified asphalt testing devices, in particular to a testing device for preparing emulsified asphalt evaporation residue and automatically measuring its content. Background Art

[0002] With the gradual improvement of my country's highway construction, repair and maintenance have become the focus of the next phase of highway construction, resulting in the emergence of a variety of maintenance technologies. In the prevention phase, when structural damage has not yet occurred, the base layer is stable, and the surface layer has not developed extensive cracks, applying a micro-surfacing overlay to the existing pavement can significantly improve aging and cracking, enhance the pavement's resistance to water damage, and extend its service life. Furthermore, in response to the national call for energy conservation and emission reduction, cold recycling technology has attracted considerable attention for its advantages in waste reuse, economic savings, and environmental protection.

[0003] In micro-surfacing and cold recycling technologies, emulsified asphalt is the primary material. Its evaporation residue is a key indicator for evaluating emulsified asphalt performance and performance. During emulsified asphalt testing, the asphalt sample needs to be continuously stirred. Currently, this is mainly done manually, and the decision to stop stirring and stopping the test is largely based on human judgment. This is prone to errors, resulting in inaccurate calculated residue content.

[0004] In order to solve the above problems, the present application proposes a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content. Utility Model Content

[0005] The utility model provides a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, so as to solve the above technical problems.

[0006] In order to solve the above technical problems, the utility model provides a test device for the preparation and automatic determination of the content of emulsified asphalt evaporation residue, including an environmental chamber, a weighing device is provided inside the environmental chamber, a base is provided on the top of the weighing device, a heating pot is provided on the top of the base, the heating pot base is connected by threads, a stirring mechanism is provided inside the heating pot, a lifting mechanism is provided on the top of the environmental chamber, a controller is fixed on the front side of the environmental chamber, and the weighing device and the controller are electrically connected.

[0007] Preferably, the lifting mechanism includes a hollow cylinder, which is fixed on the top of the environmental chamber. A mounting plate is provided inside the hollow cylinder, an electric push rod is fixed on the top of the mounting plate, the top of the electric push rod is fixedly connected to the top of the hollow cylinder, and the electric push rod is electrically connected to the controller.

[0008] Preferably, the lifting mechanism includes a rotating rod, which is arranged inside the heating pot and extends to the inside of the hollow cylinder. A motor is fixedly provided at the bottom of the mounting plate. The motor and the controller are electrically connected. The output end of the motor is fixedly connected to the top of the rotating rod. A plurality of stirring paddles are fixedly provided at the outer end of the rotating rod. The stirring paddles are arranged inside the heating pot.

[0009] Preferably, an electric heating tube and a temperature sensor are fixedly provided on the inner side wall of the heating pot, and the electric heating tube and the temperature sensor are electrically connected to the controller respectively.

[0010] Preferably, a plurality of buckles are fixedly provided on the outer side of the base, and the buckles are fixed to the top of the weighing device through the buckles.

[0011] Preferably, an exhaust pipe is fixedly provided on one side of the top of the environmental box, and a door panel is movably connected to the rear side of the environmental box through a hinge.

[0012] Preferably, a temperature control display screen, a speed display screen, a quality display screen, a temperature control knob, a lifting knob and a speed knob are installed on the front side of the controller. The temperature control display screen is arranged on one side of the quality display screen, and the speed display screen is arranged between the temperature control display screen and the quality display screen. The temperature control knob, lifting knob and speed knob are respectively arranged at the bottom of the temperature control display screen, the speed display screen and the quality display screen.

[0013] Compared with related technologies, the test device for preparing and automatically measuring the content of emulsified asphalt evaporation residue provided by the utility model has the following beneficial effects:

[0014] A large amount of emulsified asphalt evaporation residue can be prepared by the heating pot for use in the testing of the three conventional indicators and other indicators. During the experiment, the heating intensity and stirring rate are set by the controller. The controller can also monitor the quality changes of the emulsified asphalt in real time and automatically determine the experimental endpoint, which is conducive to improving the accuracy and scientificity of the evaporation residue content determination. The entire experimental process can be carried out automatically in a closed environment, reducing the risk of personnel exposure to harmful gases and protecting the personal safety of the experimenters. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, as proposed by the present invention;

[0016] Figure 2 This is a rear view of a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, as proposed by the present invention;

[0017] Figure 3 This is a schematic diagram of the overall cross-sectional three-dimensional structure of a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, as proposed by the present invention;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the weighing device and base of a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content proposed by the utility model;

[0019] Figure 5 This is a front cross-sectional view of a heating pot of a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, as proposed in the present invention;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the stirring mechanism of a test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, as proposed by the utility model.

[0021] Numbers in the figure: 1. Environmental chamber, 2. Scale, 3. Base, 4. Buckle, 5. Heating pot, 6. Electric heating tube, 7. Temperature sensor, 8. Hollow cylinder, 9. Mounting plate, 10. Motor, 11. Rotating rod, 12. Stirring paddle, 13. Electric push rod, 14. Controller, 15. Temperature control display, 16. Speed ​​display, 17. Quality display, 18. Temperature control knob, 19. Lift knob, 20. Speed ​​knob, 21. Exhaust pipe, 22. Door panel. DETAILED DESCRIPTION

[0022] Example, by Figure 1-6 The utility model includes an environmental chamber 1, wherein a weighing device 2 is provided inside the environmental chamber 1, a base 3 is provided on the top of the weighing device 2, a heating pot 5 is provided on the top of the base 3, the heating pot 5 and the base 3 are connected by threads, a stirring mechanism is provided inside the heating pot 5, a lifting mechanism is provided on the top of the environmental chamber 1, a controller 14 is fixed on the front side of the environmental chamber 1, the weighing device 2 and the controller 14 are electrically connected, and the volume of the heating pot 5 is 100-2000mL.

[0023] The lifting mechanism includes a hollow cylinder 8, which is fixed on the top of the environmental chamber 1. A mounting plate 9 is provided inside the hollow cylinder 8. An electric push rod 13 is fixed on the top of the mounting plate 9. The top of the electric push rod 13 is fixedly connected to the top of the hollow cylinder 8. The electric push rod 13 is electrically connected to the controller 14. The lifting mechanism can control the stirring mechanism to move up and down.

[0024] The stirring mechanism includes a rotating rod 11, which is arranged inside the heating pot 5 and extends to the inside of the hollow cylinder 8. A motor 10 is fixedly provided at the bottom of the mounting plate 9, and the motor 10 is electrically connected to the controller 14. The output end of the motor 10 is fixedly connected to the top of the rotating rod 11. A plurality of stirring paddles 12 are fixedly provided at the outer end of the rotating rod 11, and the stirring paddles 12 are arranged inside the heating pot 5. The stirring mechanism can stir the asphalt sample in the heating pot 5. A circular hole is opened at the top of the environmental box 1, and the rotating rod 11 passes through the circular hole. When the stirring mechanism is controlled to rise and fall by the lifting mechanism, the rotating rod 11 can pass through the circular hole without interfering with the environmental box 1. The rotation speed of the stirring mechanism is 0-400r / min.

[0025] An electric heating tube 6 and a temperature sensor 7 are fixedly provided on the inner wall of the heating pot 5. The electric heating tube 6 and the temperature sensor 7 are electrically connected to the controller 14 respectively. The temperature sensor 7 can detect the temperature of the asphalt sample inside the heating pot 5 when it is heated. The electric heating tube 6 can heat the asphalt sample in the heating pot 3. The heating temperature adjustment range is 0-200°C, and the heating rate is 1-2°C / s.

[0026] A plurality of buckles 4 are fixedly provided on the outer side of the base 3 , and the buckles 4 are fixed to the top of the weighing device 2 through the buckles 4 . The base 3 can be fixed above the weighing device 2 through the buckles 4 .

[0027] An exhaust pipe 21 is fixedly provided on one side of the top of the environmental box 1, and a door panel 22 is movably connected to the rear side of the environmental box 1 through a hinge. The exhaust pipe 21 can discharge toxic gases generated when the asphalt sample is heated and emulsified.

[0028] A temperature control display screen 15, a speed display screen 16, a mass display screen 17, a temperature control knob 18, a lifting knob 19 and a speed knob 20 are installed on the front side of the controller 14. The temperature control display screen 15 is arranged on one side of the mass display screen 17, and the speed display screen 16 is arranged between the temperature control display screen 15 and the mass display screen 17. The temperature control knob 18, the lifting knob 19 and the speed knob 20 are respectively arranged at the bottom of the temperature control display screen 15, the speed display screen 16 and the mass display screen 17. The temperature control display screen 15, the speed display screen 16, the mass display screen 17, the temperature control knob 18, the lifting knob 19 and the speed knob 20 are respectively electrically connected to the internal circuit board of the controller 14. Before the test, the controller 14 can record the initial mass m1 of the sample weighed by the weighing device 2. After the test, the mass of the sample is m2. The residue content can be automatically calculated according to the formula m2 / m1×100%.

[0029] Working principle:

[0030] Place the asphalt sample in the heating pot 5, and rotate the temperature control knob 18 to make the controller 14 control the electric heating tube 6 to heat the asphalt sample in the heating pot 5. During this period, the temperature sensor 7 can detect the temperature of the asphalt sample inside the heating pot 5, and the temperature detected by the temperature sensor 7 will be displayed on the temperature control display screen 15. Rotate the lifting knob 19 to make the controller 14 control the electric push rod 13 to operate, and the electric push rod 13 pushes the mounting plate 9 to move downward, thereby causing the stirring mechanism to move downward. At the same time, the speed knob 20 can also be rotated to control the speed of the motor 10 driving the rotating rod 11 and the stirring paddle 12 to rotate through the controller 14, and the speed will be displayed on the speed display screen 16. During this period, the weighing device 2 weighs the mass of the sample in the heating pot 5 in real time, and its mass will be displayed on the mass display screen 17. When the mass of the asphalt sample does not change within 60-100s, the test is stopped immediately. At this time, the residue content can be calculated based on the initial mass of the sample and the mass at the end of the experiment.

Claims

1. A test device for preparing emulsified asphalt evaporation residue and automatically measuring its content, comprising an environmental chamber (1), characterized in that: The environmental chamber (1) is provided with a weighing device (2) inside, a base (3) is provided on the top of the weighing device (2), a plurality of buckles (4) are fixedly provided on the outside of the base (3), the base (3) is fixed to the top of the weighing device (2) by the plurality of buckles (4), a heating pot (5) is provided on the top of the base (3), the heating pot (5) and the base (3) are connected by threads, a stirring mechanism is provided inside the heating pot (5), a lifting mechanism is provided on the top of the environmental chamber (1), a controller (14) is fixedly provided on the front side of the environmental chamber (1), and the weighing device (2) and the controller (14) are electrically connected.

2. The test device for preparing and automatically determining the content of emulsified asphalt evaporation residue according to claim 1, characterized in that: The lifting mechanism comprises a hollow cylinder (8), the hollow cylinder (8) being fixedly mounted on the top of the environmental chamber (1), a mounting plate (9) being provided inside the hollow cylinder (8), an electric push rod (13) being fixedly mounted on the top of the mounting plate (9), the top end of the electric push rod (13) being fixedly connected to the top end of the hollow cylinder (8), and the electric push rod (13) being electrically connected to a controller (14).

3. The test device for preparing and automatically determining the content of emulsified asphalt evaporation residue according to claim 2, characterized in that: The lifting mechanism comprises a rotating rod (11), the rotating rod (11) is arranged inside the heating pot (5) and extends into the hollow cylinder (8), a motor (10) is fixedly arranged at the bottom of the mounting plate (9), the motor (10) and the controller (14) are electrically connected, the output end of the motor (10) and the top end of the rotating rod (11) are fixedly connected, and a plurality of stirring paddles (12) are fixedly arranged at the outer end of the rotating rod (11), and the stirring paddles (12) are arranged inside the heating pot (5).

4. The test device for preparing and automatically determining the content of emulsified asphalt evaporation residue according to claim 1, characterized in that: An electric heating tube (6) and a temperature sensor (7) are fixedly provided on the inner wall of the heating pot (5), and the electric heating tube (6) and the temperature sensor (7) are electrically connected to a controller (14) respectively.

5. The test device for preparing and automatically determining the content of emulsified asphalt evaporation residue according to claim 1, characterized in that: An exhaust pipe (21) is fixedly provided on one side of the top of the environmental box (1), and a door panel (22) is movably connected to the rear side of the environmental box (1) via a hinge.

6. The test device for preparing and automatically determining the content of emulsified asphalt evaporation residue according to claim 1, characterized in that: The controller (14) is provided with a temperature control display screen (15), a speed display screen (16), a quality display screen (17), a temperature control knob (18), a lifting knob (19) and a speed knob (20) on the front side thereof; the temperature control display screen (15) is arranged on one side of the quality display screen (17); the speed display screen (16) is arranged between the temperature control display screen (15) and the quality display screen (17); and the temperature control knob (18), the lifting knob (19) and the speed knob (20) are arranged at the bottom of the temperature control display screen (15), the speed display screen (16) and the quality display screen (17), respectively.

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