Warm mix asphalt foaming device test platform

Abstract

The invention relates to the field of detection equipment, and discloses a warm mix asphalt foaming device test platform, which comprises an asphalt circulation unit, a heating unit and a foaming water system, the asphalt circulation unit comprises an asphalt weighing box, an asphalt output pipe, an asphalt pump and an asphalt return pipe, and the foaming water system comprises an asphalt foaming device, a water pipe and an asphalt standing box. After asphalt is heated to a test temperature by the heating unit in the asphalt weighing box, the asphalt is conveyed into the asphalt foaming device by the asphalt pump, an external water source conveys water to the asphalt foaming device by the water conveying pipe, the high-temperature asphalt and the water are mixed and foamed in the asphalt foaming device, and the foamed asphalt can be sampled and tested by the sampling port. According to the invention, a physical test mode is adopted, the test accuracy is improved, the asphalt circulation unit can realize asphalt self-circulation and improve the asphalt heating uniformity, the foamed asphalt can flow back into the asphalt weighing box again for cyclic utilization after being conveyed into the asphalt standing box for standing, the test efficiency is improved, and the cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of warm mix asphalt foaming performance detection, in particular to a warm mix asphalt foaming device test platform. BACKGROUND

[0002] At present, in the field of performance test of warm mix asphalt foaming device, there are mainly two kinds of mainstream technologies, but both have obvious limitations. On the one hand, the industry generally uses computer simulation technology to carry out performance prediction. Although this method can quickly obtain basic data and shorten the pre-evaluation period, it is difficult to accurately reproduce the actual operation conditions of the asphalt foaming device. The simulation model often simplifies key field factors such as material viscosity change, equipment vibration interference, and environmental temperature fluctuation, resulting in a significant deviation between the simulation results and the working state of the device in the real production scene, and cannot provide completely reliable reference for product performance optimization.

[0003] On the other hand, the more traditional test method is to install the asphalt foaming device in the asphalt mixing station, and directly verify its working state through the industrial production process. Although this physical test mode can reflect the real performance of the device, it has many practical problems. First, the installation process needs to adapt to the existing pipeline and control system of the mixing station, and only the pre-installation and debugging process needs to consume several weeks or even months, so the overall cycle is long. Second, the installation process involves many complex links such as mechanical connection, circuit debugging, and safety detection, which requires high technical level of construction personnel and high operation difficulty. In addition, the test process consumes a large amount of asphalt raw materials and power resources, and occupies the normal production time of the mixing station, resulting in high cost of single test.

[0004] Therefore, how to change the current situation that the performance test of the warm mix asphalt foaming device cannot balance the test accuracy, test efficiency and test cost in the prior art has become a problem to be solved by those skilled in the art. SUMMARY

[0005] The purpose of the present application is to provide a warm mix asphalt foaming device test platform to solve the problems in the related art and improve the test accuracy of warm mix asphalt foaming performance, while improving the test efficiency and saving the test cost.

[0006] To achieve the above-mentioned purpose, the present application provides the following solutions.

[0007] The present application provides a warm mix asphalt foaming device test platform, comprising:

[0008] An asphalt circulating unit comprises an asphalt weighing tank, an asphalt output pipe, an asphalt pump and an asphalt return pipe, the asphalt weighing tank is capable of containing asphalt and monitoring the mass of asphalt, the asphalt weighing tank is connected to the inlet of the asphalt pump through the asphalt output pipe, the outlet of the asphalt pump is connected to one end of the asphalt return pipe, and the other end of the asphalt return pipe is connected to the asphalt weighing tank to realize asphalt return;

[0009] A heating unit is capable of heating asphalt;

[0010] A foaming water system comprises an asphalt foaming device, a water pipe and an asphalt standing tank, the outlet of the asphalt pump is connected to the inlet of the asphalt foaming device, one end of the water pipe is connected to the asphalt foaming device, and the other end of the water pipe is capable of being connected to an external water source, and the asphalt delivered by the asphalt pump and the water delivered by the water pipe can form foamed asphalt in the asphalt foaming device; the asphalt foaming device has a sampling port to realize sampling of foamed asphalt in the asphalt foaming device; the outlet of the asphalt foaming device is connected to the asphalt standing tank, and the asphalt standing tank is connected to the asphalt weighing tank.

[0011] Preferably, control valves are arranged at the inlet and outlet of the asphalt pump; and a safety valve is further connected to one side of the outlet of the asphalt pump.

[0012] Preferably, the asphalt output pipe extends into the asphalt weighing tank and is close to the inner wall of the bottom of the asphalt weighing tank, and the asphalt return pipe extends into the asphalt weighing tank, and the depth of the asphalt return pipe extending into the asphalt weighing tank is less than the depth of the asphalt output pipe extending into the asphalt weighing tank.

[0013] Preferably, the heating unit comprises a heating coil, a pipe heating interlayer and a heating medium source, the heating coil is arranged in the asphalt weighing tank, the heating medium source is connected in series with the heating coil and the pipe heating interlayer to form a heating loop, and the heating medium source delivers heating medium to the heating coil to heat and keep warm the asphalt in the asphalt weighing tank.

[0014] Preferably, the asphalt foaming device is in a tubular structure, one end of the asphalt foaming device is an inlet, and the other end is an outlet.

[0015] Temperature sensors and pressure sensors are connected to the inlet end and the outlet end of the asphalt foaming device.

[0016] Preferably, the water pipe is arranged close to the inlet end of the asphalt foaming device; and the water pipe is connected with a quick connector, and the water pipe is capable of being connected to the external water source through the quick connector.

[0017] Preferably, a sampling tube is connected to the sampling port, and the sampling tube is arranged on the outer wall of the bitumen foaming device near the end of the bitumen foaming device close to the outlet, and a sampling valve is arranged on the sampling tube.

[0018] Preferably, the bitumen foaming device is connected to the bitumen storage tank in communication through a foamed bitumen conveying pipe, and the foamed bitumen conveying pipe extends into the bitumen storage tank away from the end of the bitumen foaming device.

[0019] Preferably, a pneumatic cock valve is arranged between the bitumen foaming device and the foamed bitumen conveying pipe.

[0020] Preferably, the warm mix bitumen foaming device test platform further comprises a rack, and the bitumen weighing tank is arranged on the rack.

[0021] The present application has the following technical effects relative to the related art: the warm mix bitumen foaming device test platform comprises a bitumen circulating unit, a heating unit, and a foaming water system, wherein the bitumen circulating unit comprises a bitumen weighing tank, a bitumen output pipe, a bitumen pump, and a bitumen return pipe, the bitumen weighing tank can accommodate bitumen and monitor the mass of the bitumen, the bitumen weighing tank is connected to the inlet of the bitumen pump in communication through the bitumen output pipe, the outlet of the bitumen pump is connected to one end of the bitumen return pipe in communication, and the other end of the bitumen return pipe is connected to the bitumen weighing tank to realize bitumen return; the heating unit can heat the bitumen; the foaming water system comprises a bitumen foaming device, a water conveying pipe, and a bitumen storage tank, the outlet of the bitumen pump is connected to the inlet of the bitumen foaming device in communication, one end of the water conveying pipe is connected to the bitumen foaming device in communication, the other end of the water conveying pipe can be connected to an external water source in communication, and the bitumen pumped by the bitumen pump and the water pumped by the water conveying pipe can form foamed bitumen in the bitumen foaming device; the bitumen foaming device has a sampling port to realize sampling of the foamed bitumen in the bitumen foaming device; the outlet of the bitumen foaming device is connected to the bitumen storage tank in communication, and the bitumen storage tank is connected to the bitumen weighing tank in communication.

[0022] The warm-mixed asphalt foaming device test platform of the present application, after the asphalt in the asphalt weighing box is heated to the test temperature by the heating unit, the asphalt is conveyed into the asphalt foaming device by the asphalt pump, and the asphalt weighing box is weighed and measured, the external water source conveys water to the asphalt foaming device by the water conveying pipe, the high-temperature asphalt is mixed and foamed with water in the asphalt foaming device, the foamed asphalt can be sampled by the sampling port, and the subsequent asphalt foaming performance test is facilitated. The warm-mixed asphalt foaming device test platform of the present application adopts a physical test mode, and the accuracy of the warm-mixed asphalt foaming performance test is improved. At the same time, in the asphalt circulating unit, the asphalt in the asphalt weighing box can be returned to the asphalt weighing box through the asphalt input pipe, the asphalt pump and the asphalt return pipe, realizing self-circulation of the asphalt, thereby effectively improving the uniformity of the asphalt heating, improving the test efficiency, and further improving the test accuracy. After the foamed asphalt in the asphalt static box is conveyed by the foaming water system and is allowed to stand, it can be returned to the asphalt weighing box for recycling and further test, thereby improving the test efficiency and saving the test cost. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the related art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Fig. 1 The structural schematic diagram of the warm-mixed asphalt foaming device test platform disclosed in the embodiments of the present application;

[0025] Fig. 2 The structural schematic diagram of the warm-mixed asphalt foaming device test platform disclosed in the embodiments of the present application from another angle.

[0026] In the figure: 1, asphalt weighing box; 2, asphalt output pipe; 3, asphalt pump; 4, asphalt return pipe; 5, asphalt foaming device; 6, water conveying pipe; 7, asphalt static box; 8, sampling port; 9, control valve; 10, safety valve; 11, foamed asphalt conveying pipe; 12, pneumatic plug valve; 13, rack. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0028] The application aims to provide a warm-mixed asphalt foaming device test platform to solve the problems in the prior art, improve the accuracy of warm-mixed asphalt foaming performance test, improve the test efficiency, and save the test cost.

[0029] In order to make the above-mentioned objects, features and advantages of the application more obvious and easy to understand, the application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] Embodiment one

[0031] The embodiment provides a warm-mixed asphalt foaming device test platform, which comprises an asphalt circulating unit, a heating unit and a foaming water system. Figs. 1-2 The asphalt circulating unit comprises an asphalt weighing tank 1, an asphalt output pipe 2, an asphalt pump 3 and an asphalt return pipe 4. The asphalt weighing tank 1 can accommodate asphalt and monitor the mass of the asphalt. The asphalt weighing tank 1 is connected to the inlet of the asphalt pump 3 through the asphalt output pipe 2. The outlet of the asphalt pump 3 is connected to one end of the asphalt return pipe 4. The other end of the asphalt return pipe 4 is connected to the asphalt weighing tank 1 to realize asphalt return. The heating unit can heat the asphalt. The foaming water system comprises an asphalt foaming device 5, a water delivery pipe 6 and an asphalt standing tank 7. The outlet of the asphalt pump 3 is connected to the inlet of the asphalt foaming device 5. One end of the water delivery pipe 6 is connected to the asphalt foaming device 5. The other end of the water delivery pipe 6 can be connected to an external water source. The asphalt delivered by the asphalt pump 3 and the water delivered by the water delivery pipe 6 can form foamed asphalt in the asphalt foaming device 5. The asphalt foaming device 5 has a sampling port 8 to realize sampling of the foamed asphalt in the asphalt foaming device 5. The outlet of the asphalt foaming device 5 is connected to the asphalt standing tank 7. The asphalt standing tank 7 is connected to the asphalt weighing tank 1.

[0032] The warm mix asphalt foaming device test platform of the present application, after the asphalt in the asphalt weighing box 1 is heated to the test temperature by the heating unit, the asphalt is conveyed into the asphalt foaming device 5 by the asphalt pump 3, and the asphalt weighing box 1 is weighed and measured, the external water source conveys water to the asphalt foaming device 5 by the water conveying pipe 6, the high-temperature asphalt is mixed and foamed with water in the asphalt foaming device 5, the foamed asphalt can be sampled by the sampling port 8, and the subsequent asphalt foaming performance test is facilitated. The warm mix asphalt foaming device test platform of the present application adopts a physical test mode, and the accuracy of the warm mix asphalt foaming performance test is improved. At the same time, in the asphalt circulating unit, the asphalt in the asphalt weighing box 1 can be returned to the asphalt weighing box 1 through the asphalt input pipe, the asphalt pump 3 and the asphalt return pipe 4, realizing self-circulation of the asphalt, thereby effectively improving the uniformity of the asphalt heating, improving the test efficiency, and further improving the test accuracy. After the foamed asphalt is conveyed into the asphalt standing box 7 and stands, it can be returned to the asphalt weighing box 1 for recycling and further test, thereby improving the test efficiency and saving the test cost.

[0033] It should be explained here that the warm mix asphalt foaming device test platform of the present application can test the asphalt foaming device, the water spray head and the static mixer are built-in the asphalt foaming device, along the fluid inflow direction, the water spray head is located in front of the static mixer, and the water spray head injects a certain amount of water into the high-temperature asphalt in the form of atomization or special spraying. After the water contacts the high-temperature asphalt, it vaporizes rapidly and generates a large number of bubbles. After the water and the asphalt are initially contacted, various types of plate elements of the static mixer are impacted, the velocity gradient of the fluid laminar flow is increased or the turbulent flow is formed, the fluid (asphalt, water vapor and air) is forced to split, move and recombine, the bubbles are more uniformly distributed in the asphalt, local bubble aggregation or breakage is avoided, thereby stabilizing the foaming effect and ensuring the uniformity and durability of the asphalt foam. The specific structure and working principle of the asphalt foaming device are known to those skilled in the art, and will not be described here. It should be further explained that the foaming water system is also connected with the external water self-circulation system, and the external water self-circulation system is also a common means for those skilled in the art. When not testing, the asphalt circulating unit and the foaming water system can be adjusted to the self-circulation mode, after the foam asphalt in the asphalt standing box 7 returns to the initial original state, the asphalt in the asphalt standing box 7 is conveyed into the asphalt weighing box 1, thereby facilitating the subsequent warm mix asphalt foaming test.

[0034] In order to facilitate control, the inlet and outlet of the asphalt pump 3 are provided with control valves 9, which can be selected as pneumatic three-way valves in the specific embodiment, meeting the asphalt conveying requirements, with high control accuracy, fast corresponding speed, high safety of the pneumatic three-way valve, and improved working reliability and safety of the test platform. At the same time, the safety valve 10 is connected to the outlet side of the asphalt pump 3, which avoids asphalt backflow and prevents overpressure at the outlet of the asphalt pump 3, thereby improving the operation stability and reliability of the test platform.

[0035] The asphalt output pipe 2 extends into the asphalt weighing tank 1 and is close to the inner wall of the bottom of the asphalt weighing tank 1, so as to ensure that the asphalt in the asphalt weighing tank 1 can smoothly enter the asphalt output pipe 2 and be smoothly output. The asphalt return pipe 4 extends into the asphalt weighing tank 1 to realize asphalt backflow and build an asphalt self-circulation system. The depth of the asphalt return pipe 4 extending into the asphalt weighing tank 1 is less than the depth of the asphalt output pipe 2 extending into the asphalt weighing tank 1, so as to ensure that the asphalt can smoothly backflow and avoid affecting the work of the asphalt output pipe 2, thereby ensuring the working reliability of the asphalt circulation unit.

[0036] In the specific embodiment that can be realized by the present application, the heating unit includes a heating coil, a pipe heating interlayer, and a heating medium source. The heating coil is arranged in the asphalt weighing tank 1. The heating medium source is connected in series with the heating coil and the pipe heating interlayer and forms a heating loop. The heating medium source supplies heating medium to the heating coil to heat and keep warm the asphalt in the asphalt weighing tank 1. The heating medium can be selected as heat conducting oil. The heat conducting oil enters the heating coil along the heating loop. The pipe heating interlayer heats the heat conducting oil. The heat conducting oil exchanges heat with the asphalt in the asphalt weighing tank 1 to heat the asphalt. Adjusting the asphalt circulation unit to a self-circulation working state is beneficial to improving the uniformity of asphalt heating and avoiding the problem of uneven asphalt heating temperature, thereby further improving the test accuracy of the test platform.

[0037] Specifically, the asphalt foaming device 5 is of a tubular structure. One end of the asphalt foaming device 5 is an inlet, and the other end is an outlet. The asphalt circulation unit is connected in communication with the inlet end of the asphalt foaming device 5 to smoothly convey the asphalt into the asphalt foaming device 5. After the asphalt is foamed, it is guided out of the outlet and conveyed into the asphalt standing tank 7. The asphalt foaming device 5 is built-in with a static mixer, which can be arbitrarily replaced in type and structure to meet different test requirements. In the specific embodiment, the asphalt foaming device 5 adopts a 1:1 ratio real reduction liquid supply production warm mix asphalt foaming device 5, which avoids the test error problem caused by scaling and guarantees the test result accuracy of the test platform.

[0038] In order to facilitate monitoring, the inlet end and the outlet end of the asphalt foaming device 5 are connected with temperature sensors and pressure sensors, which can not only observe the temperature and pressure changes of the foaming process in real time, but also facilitate the test personnel to store data by themselves, thereby providing convenience for subsequent analysis work.

[0039] More specifically, the water delivery pipe 6 is arranged near the inlet end of the asphalt foaming device 5, which facilitates the delivery of water into the asphalt foaming device 5, ensures the smooth operation of the asphalt foaming device 5, and makes the asphalt foam. In order to facilitate the communication between the water delivery pipe 6 and the external water source, the water delivery pipe 6 is connected with a quick connector, and the water delivery pipe 6 can be connected with the external water source through the quick connector, thereby improving the operation convenience of the test platform.

[0040] It should be further pointed out that the asphalt foaming device 5 is provided with a water spray head, so that the water and the asphalt entering the asphalt foaming device 5 can be quickly mixed to realize foaming. The water spray head is connected with a detachable base, which facilitates the replacement of different types of water spray heads according to different test requirements, thereby improving the flexible adaptability of the test platform. In the specific embodiment, the water spray head is threadedly connected with the detachable base, which is fastened and disassembled conveniently, thereby providing a convenient condition for meeting various specific test requirements, and further improving the operation convenience.

[0041] In order to facilitate the sampling of the test personnel, the sampling port 8 is connected with a sampling pipe, which is arranged on the outer side wall of the asphalt foaming device 5 near the outlet end of the asphalt foaming device 5, so that the test personnel can smoothly sample the foamed asphalt. The sampling pipe is provided with a sampling valve, which can be a ball valve to avoid leakage and facilitate control, thereby improving the operation convenience of the test platform.

[0042] Further, the asphalt foaming device 5 is connected with the asphalt standing tank 7 through the foamed asphalt delivery pipe 11, and the foamed asphalt delivery pipe 11 is inserted into the asphalt standing tank 7 at the end away from the asphalt foaming device 5, so that the foamed asphalt can be smoothly delivered into the asphalt standing tank 7 through the foamed asphalt delivery pipe 11.

[0043] It should be further emphasized that the pneumatic cock valve 12 is arranged between the asphalt foaming device 5 and the foamed asphalt delivery pipe 11, and the opening size of the pneumatic cock valve 12 is controlled to change the pressure in the asphalt foaming device 5.

[0044] In addition, the warm mix asphalt foaming device test platform of the present application further comprises a rack 13, and the asphalt weighing tank 1 is arranged on the rack 13, so that the asphalt weighing tank 1 can smoothly work to weigh the asphalt, thereby ensuring the operation reliability of the test platform.

[0045] Furthermore, the warm mix asphalt foaming device test platform of the present application further comprises a control unit, and the asphalt circulating unit, the heating unit and the foaming water system are communicatively connected with the control unit, thereby improving the controllability and operation convenience of the test platform.

[0046] The warm mix asphalt foaming device test platform of the present application, the asphalt is heated to the required temperature in the asphalt weighing box 1 by the heat conducting oil, the asphalt pump 3 is opened, and the pneumatic three-way valve at the inlet and outlet of the asphalt pump 3 is adjusted, the asphalt is self-circulated to make the asphalt temperature uniform at each position, and the foaming water system is simultaneously opened and in self-circulation mode; before foaming, the pneumatic three-way valve at the outlet of the asphalt pump 3 is adjusted to make the asphalt enter the foaming water system, and the pressure in the pipeline of the asphalt foaming device 5 is adjusted to the required pressure by adjusting the opening degree of the pneumatic plug valve 12; when foaming is needed, the pneumatic three-way valve at the outlet of the asphalt pump 3 is adjusted to make the asphalt enter the asphalt foaming device 5, at the same time the asphalt weighing box 1 starts to measure, the foaming water system is opened, the high-temperature asphalt and water are mixed with each other in the asphalt foaming device 5 by the static mixer to start foaming, temperature and pressure sensors are installed before and after the asphalt foaming device 5, which can collect the temperature and pressure values before and after the asphalt foaming, and facilitate the analysis of the temperature and pressure changes in the asphalt foaming device 5; when sampling is needed, the ball valve of the sampling port 8 is opened and put into the sampling barrel, the ball valve switch is closed after sampling is completed, and the foaming mode is stopped, the asphalt circulation unit and the foaming water system continue to be adjusted to the self-circulation mode; after the foamed asphalt in the asphalt static box 7 recovers to the initial original state, the asphalt transfer mode is opened, and the asphalt after static is transferred to the asphalt weighing box 1, so as to carry out the foaming operation task subsequently.

[0047] Example two

[0048] The structure of the warm mix asphalt foaming device test platform of the present embodiment is the same as that of example one, and when the test operation is carried out, the specific steps include the following:

[0049] ①Before starting the test, it is necessary to check whether the test platform is in good condition, ensure that the power connection is correct, the grounding wire is intact, and each part is in the asphalt self-circulation mode (check whether the asphalt pump 3 and the control valve 9 are opened, whether the valve opening degree is fully opened, whether each drain valve is closed, etc. in the control panel of the control unit);

[0050] ②Pour the heated asphalt into the asphalt weighing box 1, and start the test platform to enter the asphalt self-circulation mode;

[0051] ③After the test platform runs normally in the asphalt self-circulation mode, adjust the asphalt pressure, asphalt temperature, water flow, water temperature and pressure to the required values;

[0052] ④After all parameters are adjusted, adjust the three-way valve at the outlet of the asphalt pump 3 so that the asphalt enters the asphalt foaming device 5. At this time, keep the water delivery pipe 6 closed, observe the values of the pressure and temperature sensors, and calibrate the asphalt pressure (adjust the end valve to control the pressure in the asphalt foaming device 5) and temperature to ensure that the asphalt pressure and temperature in the asphalt foaming device 5 are set values. At the same time, the asphalt weighing tank 1 starts to work (only during parameter calibration and foaming, the asphalt weighing tank 1 works, and in other modes it is closed). Complete the asphalt flow calibration. The above calibration work needs to be completed quickly (the asphalt pump 3 has a large flow, and the available asphalt is limited);

[0053] ⑤Adjust the three-way valve at the inlet of the asphalt pump 3 to pump the asphalt in the asphalt static tank 7 into the asphalt weighing tank 1. After pumping is completed, continue to enter the asphalt self-circulation mode to prepare for foaming and sampling work;

[0054] ⑥Adjust the three-way valve at the outlet of the asphalt pump 3 by operating the control panel of the control unit so that the asphalt enters the asphalt foaming device 5. At the same time, open the water delivery pipe 6 for asphalt foaming (due to the limited volume of the asphalt static tank 7, continuous foaming is not possible, and foaming work needs to be stopped immediately when the foamed asphalt is about to overflow). After a while, after stable foaming, quickly perform sampling work. The sampling work steps refer to the foamed asphalt detection process described in the standard T / HNCAA044-2023 "Foamed Asphalt Foaming Quality and Detection Method";

[0055] ⑦After the sampling work is completed, quickly close the water delivery pipe 6 and adjust the asphalt circulation unit to the asphalt self-circulation mode;

[0056] ⑧After the foamed asphalt in the asphalt static tank 7 is left for a period of time to recover to the initial state, adjust the three-way valve at the inlet of the asphalt pump 3 to pump the asphalt in the asphalt static tank 7 into the asphalt weighing tank 1 to carry out subsequent foaming work;

[0057] ⑨After the foaming work is completed on the same day, the asphalt in the asphalt weighing tank 1 and the asphalt static tank 7 needs to be pumped out in time and stored for insulation. Turn off the heating unit, export and backup the sensor test data for the day, check whether all parts are in the initial state, and then turn off the test platform to stop working and cut off the power;

[0058] ⑩After the test is completed on the same day, the cleaning and arrangement work must be done in time. The test personnel must clean the workbench, instruments and equipment, and utensils, and put the instruments and equipment and utensils in the specified categories.

[0059] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used for helping to understand the method of the present application and its core idea; meanwhile, for the general technical personnel in the art, according to the idea of the present application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the present specification should not be understood as the limitation of the present application.

Claims

1. A test platform for a warm-mix asphalt foaming device, characterized in that, include: An asphalt circulation unit includes an asphalt weighing tank, an asphalt output pipe, an asphalt pump, and an asphalt return pipe. The asphalt weighing tank can hold asphalt and monitor its quality. The asphalt weighing tank is connected to the inlet of the asphalt pump via the asphalt output pipe. The outlet of the asphalt pump is connected to one end of the asphalt return pipe, and the other end of the asphalt return pipe is connected to the asphalt weighing tank to achieve asphalt return. A heating unit capable of heating asphalt; A foaming water system includes an asphalt foaming device, a water supply pipe, and an asphalt settling tank. The outlet of the asphalt pump is connected to the inlet of the asphalt foaming device. One end of the water supply pipe is connected to the asphalt foaming device, and the other end of the water supply pipe can be connected to an external water source. The asphalt pumped by the asphalt pump and the water supplied by the water supply pipe can form foamed asphalt within the asphalt foaming device. The asphalt foaming device has a sampling port to sample the foamed asphalt within the device. The outlet of the asphalt foaming device is connected to the asphalt settling tank, and the asphalt settling tank is connected to the asphalt weighing tank.

2. The test platform for the warm-mix asphalt foaming device according to claim 1, characterized in that: The asphalt pump is equipped with control valves at both its inlet and outlet; a safety valve is also connected to the outlet side of the asphalt pump.

3. The test platform for the warm-mix asphalt foaming device according to claim 1, characterized in that: The asphalt output pipe extends into the asphalt weighing box and is close to the bottom inner wall of the asphalt weighing box. The asphalt return pipe extends into the asphalt weighing box, and the depth of the asphalt return pipe into the asphalt weighing box is less than the depth of the asphalt output pipe into the asphalt weighing box.

4. The test platform for the warm-mix asphalt foaming device according to claim 1, characterized in that: The heating unit includes a heating coil, a pipe heating jacket, and a heating medium source. The heating coil is installed inside the asphalt weighing box. The heating medium source is connected in series with the heating coil and the pipe heating jacket to form a heating circuit. The heating medium source supplies heating medium to the heating coil to heat and keep the asphalt inside the asphalt weighing box warm.

5. The testing platform for the warm-mix asphalt foaming device according to claim 1, characterized in that: The asphalt foaming device has a tubular structure, with one end being the inlet and the other end being the outlet. Temperature sensors and pressure sensors are connected to both the inlet and outlet ends of the asphalt foaming device.

6. The test platform for the warm-mix asphalt foaming device according to claim 5, characterized in that: The water supply pipe is located near the inlet end of the asphalt foaming device; the water supply pipe is connected to a quick connector, which allows the water supply pipe to connect to an external water source.

7. The test platform for the warm-mix asphalt foaming device according to claim 5, characterized in that: The sampling port is connected to a sampling tube, and the sampling tube is located on the outer wall of the asphalt foaming device near the outlet end of the sampling tube. A sampling valve is provided on the sampling tube.

8. The testing platform for the warm-mix asphalt foaming device according to claim 1, characterized in that: The asphalt foaming device is connected to the asphalt settling box via a foamed asphalt delivery pipe, with one end of the foamed asphalt delivery pipe, away from the asphalt foaming device, extending into the asphalt settling box.

9. The testing platform for the warm-mix asphalt foaming device according to claim 8, characterized in that: A pneumatic stopcock valve is installed between the asphalt foaming device and the foamed asphalt delivery pipe.

10. The testing platform for the warm-mix asphalt foaming device according to claim 1, characterized in that: It also includes a frame, on which the asphalt weighing box is mounted.

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