Emulsified asphalt solid content testing device

Abstract

The utility model discloses an emulsified asphalt solid content testing device which comprises a base and a cover plate which are hinged, a halogen lamp for heating is arranged on the inner side of the cover plate, a sample vessel is arranged at the top of the base, a stirring paddle is arranged in the base, a plurality of magnetic blocks are arranged on one side and / or the tail end of the stirring paddle close to the bottom surface of the sample vessel, and a rotor is arranged in the sample vessel. And the rotor is driven by the stirring paddle to do circular motion. When the emulsion is heated, the rotor in the sample vessel does circular motion in the sample vessel, so that the emulsion is kept uniform in the heating process; after heating is finished, the rotor is separated from the stirring paddle and directly remains in the sample vessel, and the solid content of the emulsion can be measured by measuring the total increased weight of the stirring paddle and the sample vessel, so that the measurement is more accurate.

Description

Technical Field

[0001] The utility model relates to an experimental testing device, in particular to a testing device for the solid content of emulsified asphalt. Background Technique

[0002] Emulsified asphalt is an oil-in-water emulsion formed by asphalt under the action of a surfactant. It has good fluidity at room temperature and is more suitable for use at room temperature or below 100°C. During construction, production personnel will emulsify asphalt into emulsified asphalt. The content of asphalt in emulsified asphalt is called the solid content, which is the most basic technical index that needs to be detected during the production and application of emulsified asphalt.

[0003] The electric furnace evaporation method for measuring the solid content of emulsified asphalt is a uniformly recognized standard method and the only method for measuring the solid content of emulsified asphalt in the current specification. In this method, 300g ± 1g of emulsified asphalt sample is weighed into a container, and the container containing the sample is slowly heated on an electric furnace or a gas furnace while stirring. It is heated until it is confirmed that the water in the sample has completely evaporated, and then heated at 163°C for 1 minute. The sample container is taken down and cooled to room temperature, and the weight of the remaining asphalt in the container is weighed. The percentage of the weight of the remaining asphalt in the emulsified asphalt sample is the solid content of the emulsified asphalt.

[0004] During the heating process, as the water evaporates, the viscosity of the emulsion increases. If the emulsion is unevenly distributed, it is easy to cause experimental errors. The invention patent application with the publication number CN 116577237 A discloses a device for measuring the evaporation residue content of emulsified asphalt, which adds a mechanical stirring device inside the weighing device to ensure uniform distribution of the emulsion during the test process. Although this solution ensures uniformity, in the later stage of the experiment, the emulsion after water evaporation is easy to adhere to the stirring paddle, and the accuracy of measuring the residual mass of the emulsion decreases. Content of the Utility Model

[0005] Purpose of the Utility Model: The purpose of the utility model is to provide a testing device for the solid content of emulsified asphalt that improves heating uniformity and measurement accuracy.

[0006] Technical Solution: A testing device for the solid content of emulsified asphalt described in the utility model includes a base and a cover plate hinged to each other. A halogen lamp for heating is provided inside the cover plate. A sample dish is provided on the top of the base. A stirring paddle is provided inside the base. Several magnetic blocks are provided on one side and / or the end of the stirring paddle close to the bottom surface of the sample dish. A rotor is provided inside the sample dish, and the rotor is driven by the stirring paddle to perform circular motion.

[0007] When heating the emulsion, the rotor in the sample dish moves in a circular motion within the sample dish to keep the emulsion heating process uniform; after heating, the rotor disengages from the stirring paddle and remains directly in the sample dish. By measuring the total weight increase of the stirring paddle and the sample dish, the solid content of the emulsion can be measured more accurately.

[0008] Preferably, a receiving cavity for installing the sample dish is provided at the top of the base, and the outside of the sample dish is detachably connected to the receiving cavity.

[0009] Preferably, buckles are respectively arranged on the outer wall of the sample dish and the inner wall of the receiving cavity, and the sample dish and the receiving cavity are detachably connected through the buckles.

[0010] Preferably, a weighing sensor is provided at the bottom of the receiving cavity, and leveling feet are provided at the bottom of the base. After the test is completed and the instrument is stable, the weight of the sample dish can be directly measured to obtain the weight of the residual solid in the sample dish.

[0011] Preferably, in order to facilitate the evaporation of moisture, exhaust holes are provided around the receiving cavity. The exhaust holes can be connected to a vacuum pump or other devices that form negative pressure to quickly discharge the moisture inside the device.

[0012] Preferably, there are no less than 4 stirring paddles, and the middle parts of the stirring paddles are fixedly connected to the motor rotating shaft.

[0013] Preferably, the rotor is a steel ball or an iron block with a polytetrafluoroethylene protective layer.

[0014] Preferably, a temperature sensor is provided on the cover plate in the middle of the halogen lamp, and the cover plates around are made of transparent materials. The transparent materials facilitate visual inspection of the water content of the emulsion and prevent the emulsion from splashing due to local overheating at the same time. The cover plate around can be made of heat-resistant plastic or glass material, and the sensor is used to prevent the experimental device or the sample to be measured from overheating.

[0015] Preferably, a sieve cylinder is sleeved inside the sample dish, and the sieve mesh of the sieve cylinder is hemispherical. After the sample is screened by the sieve cylinder and enters the sample dish to filter impurities, the sieve cylinder is detachable after the sample addition is completed. Since the emulsion is viscous, the hemispherical sieve mesh helps the emulsion to be concentrated and screened out, reducing the residue of the emulsion in the sieve cylinder.

[0016] Preferably, the middle parts of the stirring paddles and the motor rotating shaft are connected through bevel gear assemblies, which is convenient for the installation of the motor.

[0017] Preferably, the outer wall of the sample dish and the inner wall of the receiving cavity are both regular polygons.

[0018] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: 1. It improves the heating uniformity and the measurement accuracy of the sample; 2. It simplifies the experimental operation: the sample addition and the weighing operation of the residual sample can be directly completed by the base; 3. It improves the experimental safety. Description of the Drawings

[0019] Figure 1 This is a three-dimensional structure diagram of the present utility model.

[0020] Figure 2 This is a partial structure diagram of the present utility model;

[0021] Figure 3 This is a top view of the sieve barrel structure of the present utility model;

[0022] Figure 4 This is a top view cross-sectional view of the base structure of the present utility model. Specific embodiments

[0023] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings.

[0024] Embodiment: The present utility model discloses an emulsified asphalt solid content detection device. As Figure 1 shown, the detection device mainly consists of a base 3 and a cover plate 15. One side of the base 3 is hinged with a cover plate 15 through a hinge 16. In the middle of the top inside the cover plate 15, a halogen lamp 8 is fixedly installed by screws for heating; buffer pads 6 are provided around the top inside the cover plate 15.

[0025] A temperature sensor 7 is installed on the cover plate 15 in the middle of the halogen lamp 8, and the cover plate 15 around is a transparent plate.

[0026] A receiving cavity 9 is arranged in the middle of the top surface of the base 3. A sample dish 1 is installed in the receiving cavity 9, and exhaust holes 10 are arranged around.

[0027] As Figure 2 shown, inside the base 3, which is also the bottom outside the receiving cavity 9 and the sample dish 1, a stirring paddle 24 is centrally provided. A magnetic block 23 is embedded in the side or end of the stirring paddle 24. A rotor 22 is placed inside the sample dish 1. The rotor 22 itself has magnetism or can be magnetized by the magnetic block 23. When the stirring paddle 24 approaches the sample dish 1 and rotates, the rotor 22 can make a circular motion along with the stirring paddle 24 to form a stirring effect. The rotor 22 and the stirring paddle 24 are respectively inside and outside the sample dish 1, and the rotor 22 can be separated from the stirring paddle 24 along with the sample dish 1. The rotor 22 can be a steel ball, a stainless steel block or a small iron block with a polytetrafluoroethylene protective layer. The middle sleeve 21 of the stirring paddle 24 is directly connected to the rotating shaft 25 of the motor 20, or can be connected after being reversed through a bevel gear assembly to facilitate the installation of the motor 20. The bevel gear is a prior art and will not be elaborated here. A weighing sensor 11 is arranged at the bottom of the receiving cavity 9, which can weigh when adding samples and at the end of heating.

[0028] The outer wall of the sample dish 1 can be circular or regular polygon, preferably polygon. Correspondingly, the inside of the accommodating cavity 9 is also polygon, so as to prevent the sample dish 1 from rotating when the stirring paddle 24 attracts the rotor 22. The sample dish 1 can be directly placed in the accommodating cavity 9 or be detachably connected. When detachably connected, buckles 26 are respectively arranged on the outer wall of the sample dish 1 and the inner wall of the accommodating cavity 9 of the base 3. Press the sample dish 1 downward to assemble it. Gently bend the outer wall of the accommodating cavity 9 to deform it, then the sample dish 1 can be disassembled.

[0029] When necessary, a sieve cylinder 19 can be installed above the sample dish 1 to remove large particle substances and impurities in the sample. The bottom 193 of the sieve cylinder 19 has a reduced diameter so that the bottom 193 can be sleeved in the sample dish 1 and prevent the sample from leaking during sample addition. The outer diameter of the top 191 of the sieve cylinder 19 is not less than the inner diameter of the sample dish 1. A step is formed between the top 191 and the bottom 193. After assembly, the step can be placed on the top of the sample dish 1 and direct sample addition can be carried out. Or a tripod can be placed on the base 3 to support the sieve cylinder 19 for sample addition. As Figure 3 shown, a sieve mesh 192 is installed at the step. The sieve mesh 192 is a hemispherical sieve mesh, which is convenient for sample addition. The outer diameter of the sieve mesh 192 is not less than the inner diameter of the bottom 193.

[0030] As Figure 4 shown, there are at least 4 stirring paddles 24, forming a cross shape. The two opposite stirring paddles are on the same straight line, and the lengths of the two adjacent stirring paddles are inconsistent.

[0031] A control module (not shown) for regulating the halogen lamp 8 and the stirring paddle 24, a display module 2 for displaying the weighing sensor 11, the temperature sensor 7 and other information, a connector 18 and a main switch 17 can be arranged on the side of the base 3, so as to facilitate adjusting the stirring speed and displaying the experimental state in real time.

[0032] Leveling feet 5 can be arranged at the bottom of the base 3, and a bubble window 4 can be arranged on the side, so as to improve the measurement accuracy of the weighing sensor 11.

[0033] During the experiment, connect the power supply, turn on the main switch 17, lift the cover plate 15, install the sample dish 1, put the rotor 22 in, record the first weight. Place a tripod on the base 3, suspend the sieve cylinder 19 directly above the sample dish 1, then slowly pour the emulsified asphalt sample to be measured into the sieve cylinder 19. After adding the specified weight of the sample, record the second weight. Subtract the first weight from the second weight to get the sample weight. Remove the tripod and the sieve cylinder, close the cover plate 15, start stirring and heating, and exhaust at the same time. After visually observing that there is basically no water residue, stop stirring, let it stand, measure the third weight. Subtract the first weight from the third weight to get the mass of all asphalt. Subtract the weights multiple times to avoid the magnetic force between the rotor 22 and the stirring paddle 24 affecting the weighing accuracy. After the measurement is completed, disassemble the sample dish 1 for cleaning.

Claims

1. An emulsified asphalt solid content testing device, comprising a base (3) and a cover plate (15) hinged to each other. A halogen lamp (8) for heating is provided inside the cover plate (15), and a sample dish (1) is provided on the top of the base (3). It is characterized in that, The base (3) is provided with a stirring paddle (24), and a plurality of magnetic blocks are arranged on one side and / or the end of the stirring paddle (24) close to the bottom surface of the sample dish (1). A rotor (22) is arranged inside the sample dish (1), and the rotor (22) is driven by the stirring paddle (24) to perform circular motion.

2. The emulsified asphalt solid content testing device according to claim 1, characterized in that, A receiving cavity (9) for installing the sample dish (1) is arranged at the top of the base (3), and the outside of the sample dish (1) is detachably connected to the receiving cavity (9).

3. The emulsified asphalt solid content testing device according to claim 2, characterized in that, Clasps (26) are respectively arranged on the outer wall of the sample dish (1) and the inner wall of the receiving cavity (9), and the sample dish (1) and the receiving cavity (9) are detachably connected through the clasps (26).

4. The emulsified asphalt solid content testing device according to claim 2, characterized in that, A weighing sensor (11) is arranged at the bottom of the receiving cavity (9), and leveling feet (5) are arranged at the bottom of the base (3).

5. The emulsified asphalt solid content testing device according to claim 2, characterized in that, Exhaust holes (10) are arranged around the receiving cavity (9).

6. The emulsified asphalt solid content testing device according to claim 1, characterized in that, There are no less than 4 stirring paddles (24), and the middle part of the stirring paddle (24) is fixedly connected to the rotating shaft (25) of the motor (20).

7. The emulsified asphalt solid content testing device according to claim 1, characterized in that The rotor (22) is a steel ball or an iron block with a polytetrafluoroethylene protective layer.

8. The emulsified asphalt solid content testing device according to claim 1, wherein, A temperature sensor (7) is arranged on the cover plate (15) in the middle of the halogen lamp (8), and the cover plates (15) around are made of transparent materials.

9. The emulsified asphalt solid content testing device according to claim 1, characterized in that, A sieve cylinder (19) is sleeved inside the sample dish (1), and the sieve mesh (192) of the sieve cylinder is hemispherical.

10. The emulsified asphalt solid content testing device according to claim 2, wherein, The outer wall of the sample dish (1) and the inner wall of the receiving cavity (9) are both regular polygons.

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