Treatment device for asphalt chemical detection samples

Abstract

The utility model is suitable for bitumen detection technical field provides the processing apparatus for bitumen chemical detection sample, including constant temperature casing, be provided with ring in constant temperature casing, the outer surface of ring is pasted with constant temperature casing inner wall and is along constant temperature casing inner wall sliding, the inner ring of ring is equipped with metal screen, be provided with the mounting panel of metal screen just above on the inner wall of constant temperature casing, the lower surface of mounting panel is close to metal screen and is opened with the bottom groove, the movable rod is provided with in bottom groove, the movable rod is equipped with a plurality of the board that pushes and moves on the sleeve, the downside of board that pushes and moves extends the bottom groove, and is contacted with the bitumen on metal screen, the inside of mounting panel is close to the one side of ring and is opened with control cavity, control cavity is provided with the control assembly that can control movable rod back and forth displacement, the utility model discloses through control metal screen rotation and board that pushes and moves back and forth displacement, makes bitumen can distribute on metal screen, to filter the speed of bitumen can be accelerated, has improved the processing effect to bitumen.

Description

Technical Field

[0001] This utility model relates to the field of asphalt testing technology, and more specifically, to a processing device for asphalt chemical testing samples. Background Technology

[0002] During transportation or storage, asphalt may be mixed with impurities such as sand and fibers. These particles can significantly affect viscosity test results. For example, unfiltered asphalt samples may cause rotor jamming or data fluctuations in a rotational viscometer, with errors reaching 10% to 15% (refer to ASTM D4402-23). ​​Filtration can ensure sample homogeneity, which is especially critical for modified asphalt (such as SBS modified asphalt) because its polymer components are prone to forming gel clumps.

[0003] The common practice in the laboratory is to use a 0.6 mm (30 mesh) metal sieve for filtration. This specification balances the impurity removal rate with the retention rate of effective asphalt components. If the particulate matter content in the sample exceeds 0.1% (by mass), filtration is necessary; otherwise, it may violate the requirements of the "Test Procedures for Asphalt and Asphalt Mixtures in Highway Engineering" (JTG E20-2011).

[0004] Currently, most asphalt chemical testing sample filtration methods employ constant-temperature filtration devices. These devices heat the asphalt to a fluid state and then filter it through a metal screen within the device. However, existing constant-temperature filtration devices have the following problems: when the fluid asphalt falls onto the metal screen, it generally clumps together, requiring inertia for sieving. This results in a longer filtration time, affecting the filtration speed and reducing the processing efficiency of asphalt chemical testing samples. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a processing device for asphalt chemical testing samples, which can uniformly distribute asphalt on a metal screen, thereby accelerating the filtration speed of asphalt and improving the processing effect of asphalt.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A processing device for asphalt chemical testing samples includes a constant temperature shell, inside which is a circular ring. The outer surface of the circular ring is in contact with and slides along the inner wall of the constant temperature shell. A metal screen is provided on the inner ring of the circular ring. An installation plate is provided on the inner wall of the constant temperature shell, directly above the metal screen. A bottom groove is formed on the lower surface of the installation plate near the metal screen. A movable rod is provided in the bottom groove. Multiple actuating plates are sleeved on the movable rod. The lower side of the actuating plates extends out of the bottom groove and contacts the asphalt on the metal screen. A control cavity is formed inside the installation plate near the circular ring. One end of the movable rod near the control cavity slides through the control cavity. A control component is provided in the control cavity to control the back-and-forth movement of the movable rod.

[0007] The present invention is further configured such that: a top cover is provided on the top of the constant temperature shell, the bottom of the constant temperature shell is conical, a discharge pipe communicating with the interior of the constant temperature shell is provided at the bottom of the constant temperature shell, a valve is provided on the discharge pipe, and a feed pipe penetrating through the lower surface of the top cover is provided at the top of the top cover, and a valve is also provided on the feed pipe.

[0008] The present invention is further configured such that: the outer surface of the constant temperature shell and the top cover is provided with heat insulation material, the inner wall of the constant temperature shell is provided with heating element and temperature sensor, and the constant temperature shell is provided with controller, which is electrically connected to the temperature sensor and heating element respectively.

[0009] The present invention is further configured such that: an annular base is provided on the inner wall of the constant temperature shell, located directly below the ring; the annular base has an annular groove on its upper surface; an annular slider is provided on the lower surface of the ring; the lower side of the annular slider extends into the annular groove and slides along the inner wall of the annular groove.

[0010] The present invention is further configured such that: a toothed ring is provided on the lower surface of the ring, the toothed ring is located on the outside of the annular slider, a gear is meshed on the lower side of the toothed ring, a transmission shaft is provided on the right side surface of the gear, a motor is provided on the outer surface of the constant temperature housing, and one end of the motor output shaft rotates through into the constant temperature housing and is connected to the transmission shaft.

[0011] The present invention is further configured such that: the control component includes a contact rod, the contact rod is disposed in the control cavity, the lower end of the contact rod slides through the lower surface of the mounting plate and slides in contact with the upper surface of the ring, the upper end of the contact rod and the end of the movable rod located in the control cavity are hinged to a rotating plate, the upper surface of the ring is provided with a plurality of protrusions arranged in a circumferential array, the lower end of the contact rod contacts the outer arc surface of the protrusions and slides.

[0012] The present invention is further configured such that: a sleeve plate is sleeved on the outer surface of the movable rod located in the control cavity, and a spring is movably sleeved on the outer surface of the movable rod between the sleeve plate and the inner wall of the control cavity.

[0013] The advantages of this utility model are: This invention controls the rotation of a metal screen and the back-and-forth movement of a toggle plate, allowing asphalt to be evenly distributed on the metal screen, thereby accelerating the filtration speed of asphalt and improving the processing efficiency of asphalt. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the device for processing samples for chemical testing of asphalt according to this utility model; Figure 2 This is a cross-sectional schematic diagram of the constant temperature shell of this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0015] In the diagram: 1. Thermostatic housing; 2. Top cover; 3. Discharge pipe; 4. Heating element; 5. Ring; 6. Metal screen; 7. Annular base; 8. Annular slider; 9. Annular groove; 10. Pulley; 11. Gear ring; 12. Motor; 13. Drive shaft; 14. Gear; 15. Mounting plate; 16. Bottom groove; 17. Movable rod; 18. Actuating plate; 19. Control cavity; 20. Sleeve plate; 21. Spring; 22. Contact rod; 23. Rotating plate; 24. Protrusion. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Please see Figure 1-4 The present invention provides the following technical solution: Specifically, it refers to a processing device for asphalt chemical testing samples, including a constant temperature shell 1, a top cover 2 covering the top of the constant temperature shell 1, a conical bottom of the constant temperature shell 1, a discharge pipe 3 communicating with the interior of the constant temperature shell 1, and a valve on the discharge pipe 3, a feed pipe penetrating the lower surface of the top cover 2, and a valve on the feed pipe, a ring 5 inside the constant temperature shell 1, the outer surface of the ring 5 fitting against the inner wall of the constant temperature shell 1 and sliding along the inner wall of the constant temperature shell 1, and a metal screen 6 on the inner ring of the ring 5.

[0019] During use, the heated asphalt is fed into the constant temperature shell 1 through the feed pipe on the top cover 2. The heated asphalt falls onto the metal screen 6 due to inertia. Since the heated asphalt is in a flowing state, it can drip down along the mesh of the metal screen 6. At the same time, impurities such as sand and fiber mixed in the asphalt are blocked by the metal screen 6, thus achieving the purpose of filtering the asphalt and minimizing the impact of these particles on the asphalt viscosity test results.

[0020] In practical applications, when filtering ordinary asphalt, a 0.6mm sieve (compliant with ASTM standards) is used. For high-viscosity modified asphalt, the filtration width can be increased to 1.18mm (16 mesh) to prevent excessive shearing from damaging the polymer structure.

[0021] Meanwhile, after filtration, the asphalt needs to be left to stand for 2 minutes to defoam, so as to avoid bubbles interfering with the viscometer reading.

[0022] The outer surfaces of the constant temperature housing 1 and the top cover 2 are provided with heat insulation material. The inner wall of the constant temperature housing 1 is provided with a heating element 4 and a temperature sensor. The constant temperature housing 1 is provided with a controller, which is electrically connected to the temperature sensor and the heating element 4. The controller sets the operating temperature inside the constant temperature housing 1. The temperature sensor detects the temperature change inside the constant temperature housing 1 in real time. When the temperature drops, the controller controls the heating element 4 to start. The heating element 4 generates heat to raise the temperature of the constant temperature housing 1 to the set temperature, thus avoiding the asphalt from solidifying during the filtration process and affecting the asphalt filtration effect.

[0023] An annular base 7 is located directly below the ring 5 on the inner wall of the thermostatic housing 1. An annular groove 9 is formed on the upper surface of the annular base 7. An annular slider 8 is provided on the lower surface of the ring 5. The lower side of the annular slider 8 extends into the annular groove 9 and slides along the inner wall of the annular groove 9. A toothed ring 11 is provided on the lower surface of the ring 5. The toothed ring 11 is located outside the annular slider 8. A gear 14 is meshed on the lower side of the toothed ring 11. A drive shaft 13 is provided on the right side surface of the gear 14. A motor 12 is provided on the outer surface of the thermostatic housing 1. One end of the output shaft of the motor 12 rotates through the thermostatic housing 1 and is connected to the drive shaft 13. A toggle assembly that can move asphalt is provided on the metal screen 6.

[0024] When in use, the motor 12 starts, and the output shaft of the motor 12 synchronously drives the transmission shaft 13 and the gear 14 to rotate, so that the gear 14 can mesh with the transmission gear ring 11, causing the ring 5 to slide circumferentially on the annular base 7.

[0025] The lower surface of the annular slider 8 is provided with multiple pulleys 10 that slide on the bottom wall of the annular groove 9. Therefore, the pulleys 10 can provide support for the annular slider 8, reduce the friction between the annular slider 8 and the annular groove 9, and minimize the problem of mechanical jamming caused by excessive friction in the annular groove 9.

[0026] The actuating assembly includes a mounting plate 15, which is located on the upper side of the metal screen 6 and connected to the inner wall of the constant temperature housing 1. A bottom groove 16 is formed on the lower surface of the mounting plate 15 near the metal screen 6. A movable rod 17 is disposed within the bottom groove 16, and multiple actuating plates 18 are sleeved on the movable rod 17. The lower side of each actuating plate 18 extends out of the bottom groove 16 and contacts the asphalt on the metal screen 6. A control cavity 19 is formed inside the mounting plate 15 near the annular ring 5. One end of the movable rod 17 near the control cavity 19 slides through the control cavity 19, and the movable rod 17 is located within the control cavity 19. A sleeve plate 20 is fitted on the outer surface of the ring 15. A spring 21 is movably fitted on the outer surface of the movable rod 17 between the sleeve plate 20 and the inner wall of the control cavity 19. A contact rod 22 is provided inside the control cavity 19. The lower end of the contact rod 22 slides through the lower surface of the mounting plate 15 and slides in contact with the upper surface of the ring 5. A rotating plate 23 is hinged between the upper end of the contact rod 22 and the end of the movable rod 17 located in the control cavity 19. A plurality of protrusions 24 arranged in a circumferential array are provided on the upper surface of the ring 5. The lower end of the contact rod 22 contacts the outer arc surface of the protrusions 24 and slides.

[0027] In use, when the ring 5 rotates, multiple protrusions 24 rotate synchronously with the ring 5. When the lower end of the contact rod 22 contacts the protrusion 24, the protrusion 24 will exert a pushing force on the contact rod 22, causing the contact rod 22 to move upward. At this time, the rotating plate 23 will exert a pushing force on the movable rod 17, causing the movable rod 17 to move to one side in the bottom groove 16. The spring 21 is stressed and contracts, and the actuating plate 18 moves synchronously. When the contact rod 22 is not in contact with the protrusion 24, the spring 21 releases the pushing force, and the spring 21 pulls the movable rod 17 to move closer to the control cavity 19. The actuating plate 18 moves synchronously, thereby controlling the back-and-forth movement of the actuating plate 18. Through the above structure, the asphalt on the metal screen 6 can be agitated during the asphalt process, so that the asphalt can be distributed on the metal screen 6, thereby accelerating the filtration speed of the asphalt and improving the asphalt treatment effect.

[0028] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A processing device for asphalt chemical testing samples, comprising a constant temperature shell (1), a ring (5) disposed inside the constant temperature shell (1), the outer surface of the ring (5) being in contact with the inner wall of the constant temperature shell (1) and sliding along the inner wall of the constant temperature shell (1), and a metal screen (6) disposed on the inner ring of the ring (5), characterized in that: The inner wall of the constant temperature housing (1) is provided with an installation plate (15) located directly above the metal screen (6). The installation plate (15) has a bottom groove (16) on its lower surface near the metal screen (6). A movable rod (17) is provided in the bottom groove (16). Multiple actuating plates (18) are sleeved on the movable rod (17). The lower side of the actuating plates (18) extends out of the bottom groove (16) and contacts the asphalt on the metal screen (6). A control cavity (19) is provided inside the installation plate (15) near the ring (5). The end of the movable rod (17) near the control cavity (19) slides into the control cavity (19). A control component that can control the back-and-forth movement of the movable rod (17) is provided in the control cavity (19).

2. The processing device for asphalt chemical testing samples according to claim 1, characterized in that: The top of the constant temperature shell (1) is covered with a top cover (2). The bottom of the constant temperature shell (1) is conical. The bottom of the constant temperature shell (1) is provided with a discharge pipe (3) that communicates with its interior. A valve is provided on the discharge pipe (3). The top of the top cover (2) is provided with a feed pipe that extends through the lower surface of the top cover (2). A valve is also provided on the feed pipe.

3. The processing device for asphalt chemical testing samples according to claim 1, characterized in that: The outer surfaces of the constant temperature shell (1) and the top cover (2) are provided with heat insulation material. The inner wall of the constant temperature shell (1) is provided with a heating element (4) and a temperature sensor. The constant temperature shell (1) is provided with a controller, which is electrically connected to the temperature sensor and the heating element (4) respectively.

4. The processing device for asphalt chemical testing samples according to claim 1, characterized in that: The inner wall of the constant temperature housing (1) is provided with an annular base (7) located directly below the ring (5). The upper surface of the annular base (7) is provided with an annular groove (9). The lower surface of the ring (5) is provided with an annular slider (8). The lower side of the annular slider (8) extends into the annular groove (9) and slides along the inner wall of the annular groove (9).

5. The processing device for asphalt chemical testing samples according to claim 4, characterized in that: The lower surface of the ring (5) is provided with a toothed ring (11), which is located on the outside of the annular slider (8). The lower side of the toothed ring (11) is meshed with a gear (14). The right side surface of the gear (14) is provided with a transmission shaft (13). The outer surface of the constant temperature housing (1) is provided with a motor (12). One end of the output shaft of the motor (12) rotates through into the constant temperature housing (1) and is connected to the transmission shaft (13).

6. The processing device for asphalt chemical testing samples according to claim 5, characterized in that: The control component includes a contact rod (22), which is located in the control cavity (19). The lower end of the contact rod (22) slides through the lower surface of the mounting plate (15) and slides in contact with the upper surface of the ring (5). A rotating plate (23) is hinged between the upper end of the contact rod (22) and the end of the movable rod (17) located in the control cavity (19). The upper surface of the ring (5) is provided with a plurality of protrusions (24) arranged in a circumferential array. The lower end of the contact rod (22) contacts the outer arc surface of the protrusion (24) and slides.

7. The processing device for asphalt chemical testing samples according to claim 6, characterized in that: The movable rod (17) is fitted with a sleeve plate (20) on its outer surface inside the control cavity (19). A spring (21) is movably fitted on the outer surface of the movable rod (17) between the sleeve plate (20) and the inner wall of the control cavity (19).

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