A cleaning device for a viscometer used in asphalt dynamic viscosity testing

Abstract

This application relates to the field of cleaning testing equipment, and in particular to a cleaning device for a viscometer used in asphalt dynamic viscosity testing. The viscometer is U-shaped and includes a sample tube and a capillary tube, with one end of the sample tube connected to one end of the capillary tube. A cleaning solvent is injected into the viscometer. A suction assembly is used to drive the cleaning solvent to reciprocate between the sample tube and the capillary tube. A first connecting component has a first connecting port, which is connected to the end of the sample tube away from the capillary tube via the first connecting component. A second connecting component has a second connecting port, which is connected to the end of the capillary tube away from the sample tube via the second connecting component.

Description

Technical Field

[0001] This application relates to the field of cleaning test equipment, and in particular to a cleaning device for a viscometer used for testing the dynamic viscosity of asphalt. Background Technology

[0002] The vacuum depressurization capillary method is a commonly used method for determining the dynamic viscosity of asphalt. It is applicable to materials such as viscous petroleum asphalt and polymer-modified asphalt. This test can measure the time it takes for asphalt to flow through a vacuum depressurization capillary at a specific temperature and calculate the dynamic viscosity by combining the capillary constant, thereby reflecting the internal friction resistance characteristics of asphalt in the flow state.

[0003] Currently, the main cleaning method for vacuum depressurization capillary viscometers is manual brushing. Manual brushing involves inserting a thin, long brush into the capillary for cleaning. This method is relatively direct, and operators can control the force and brushing range based on experience. However, manual brushing is inefficient, and because the capillary diameter is small, the brush is difficult to insert completely and can easily damage the inner wall of the capillary. As a result, the vacuum depressurization capillary viscometer cannot be cleaned efficiently and thoroughly, which in turn affects the accuracy of subsequent test results. Utility Model Content

[0004] To improve the efficiency of viscometer cleaning, this application provides a cleaning device for a viscometer used in asphalt dynamic viscosity testing.

[0005] This application provides a cleaning device for a viscometer used in asphalt dynamic viscosity testing, which adopts the following technical solution:

[0006] A cleaning device for a viscometer used in asphalt dynamic viscosity testing, comprising:

[0007] The viscometer is U-shaped and includes a sample tube and a capillary tube, with one end of the sample tube connected to one end of the capillary tube.

[0008] Clean the solvent and inject it into the viscometer;

[0009] The suction assembly is used to drive the cleaning solvent to flow back and forth between the sample tube and the capillary tube;

[0010] The first connecting component and the suction assembly are provided with a first communication port, which is connected to the end of the sample tube away from the capillary tube through the first connecting component.

[0011] The second connecting component, the suction assembly is provided with a second communication port, and the second communication port is connected to the end of the capillary tube away from the sample tube through the second connecting component.

[0012] By adopting the above technical solution, when the viscometer needs to be cleaned, the cleaning solvent is injected into the U-shaped viscometer, which connects the sample tube and the capillary. Then, the first connecting part of the suction assembly is connected to the end of the sample tube furthest from the capillary using the first connecting part, and the second connecting part is connected to the end of the capillary furthest from the sample tube using the second connecting part. The suction assembly is then activated, driving the cleaning solvent to flow back and forth between the sample tube and the capillary. This back-and-forth flow of the cleaning solvent utilizes its flushing action to thoroughly and continuously flush every corner inside the capillary, thereby completely removing residual asphalt. This reduces the possibility of damage to the capillary caused by manual brushing, which is difficult to fully insert and prone to contact with the inner wall of the capillary. Moreover, compared to manual brushing that cleans each part individually, the suction operation can clean the entire capillary and sample tube simultaneously, greatly improving cleaning efficiency and thus enhancing the viscometer cleaning efficiency.

[0013] Optionally, the capillary includes an opening, a thin tube, and a connecting part. One end of the opening is connected to the thin tube, the end of the thin tube away from the opening is connected to the connecting part, and the end of the connecting part away from the thin tube is connected to the sample tube.

[0014] By adopting the above technical solution, the capillary is provided with an opening, a narrow tube, and a connecting part that are sequentially connected to the sample tube. This facilitates the connection of the second connecting part to the opening, allowing the cleaning solvent to flow more smoothly inside the capillary, effectively improving the cleaning effect on residual asphalt inside the capillary, and more thoroughly removing residual asphalt.

[0015] Optionally, the viscometer also includes a support tube, in which the capillary is inserted, and the support tube is used to support and connect the capillary.

[0016] By adopting the above technical solutions, the stability of the capillary is enhanced, reducing the possibility of shaking or deformation due to external forces during the cleaning process, thereby ensuring the smooth progress of the cleaning operation and extending the service life of the capillary.

[0017] Optionally, the first connecting component includes a flexible sleeve, a clamp, a connector, and a locking component. The flexible sleeve is fitted onto the end of the sample tube away from the capillary tube. The inner wall of the clamp fits against the outer wall of the flexible sleeve. The clamp has an insertion port. The connector is inserted into the insertion port. The connector is threadedly connected to the locking component. The clamp is pressed tightly against the outer wall of the flexible sleeve by the locking component.

[0018] By adopting the above technical solution, the flexible sleeve is fitted onto the end of the sample tube furthest from the capillary, so that the inner wall of the clamp fits against the outer wall of the flexible sleeve. At this time, the clamp is in its initial installation state. Then, the connector is inserted into the insertion port of the clamp, and then the connector is threaded to the locking part. During the tightening of the locking part, the clamp will gradually press against the outer wall of the flexible sleeve, thereby achieving a firm connection. This connects the first communication port of the suction assembly with the sample tube, reducing the possibility of leakage at the connection when the suction assembly drives the cleaning solvent to flow back and forth, improving the stability and effectiveness of the cleaning process, and facilitating more efficient removal of residual asphalt in the capillary.

[0019] Optionally, the clamp includes a semi-circular clamp, two of which are hinged together. The semi-circular clamps are connected to a fixing plate, and an insertion port is opened on the fixing plate. The two fixing plates fit together, and the connector is inserted into the two insertion ports in sequence.

[0020] By adopting the above technical solution, when installing the clamp, open the two hinged semi-circular clamps and put them on the hose sleeve. Then, fit the two fixing plates together. Subsequently, insert the connectors into the two insertion holes in sequence and tighten them with the locking parts. This allows the clamp to fit tightly against the outer wall of the hose sleeve, improving the reliability of the connection between the suction assembly and the sample tube. It also facilitates the stable reciprocating flow of the cleaning solvent between the sample tube and the capillary, better cleaning of residual asphalt in the capillary. At the same time, it also facilitates the disassembly and assembly of the hose sleeve and the sample tube, improving convenience.

[0021] Optionally, a limiting sleeve is connected to the outer wall of the hose sleeve, with one end of the limiting sleeve abutting against the clamp.

[0022] By adopting the above technical solution, the limiting sleeve can reduce the possibility of the clamp sliding and shifting on the hose sleeve, improve the stability of the connection of the first connecting component, and thus ensure that the cleaning solvent flows stably back and forth in the device, thereby improving the reliability of the cleaning process.

[0023] Optionally, the suction assembly is connected to an installation tube located at the first communication port. The installation tube is threadedly connected to a fixing sleeve, and the fixing sleeve is rotatably connected to a communication tube, which is connected to a flexible sleeve.

[0024] By adopting the above technical solution, the connection between the suction component and the first connecting component is made more stable and reliable, thereby improving the stability of the cleaning device operation.

[0025] Optionally, a control panel is also included for setting the operating parameters of the suction device, including the suction direction switching time, suction frequency, and total cleaning time. The control panel is electrically connected to the suction device.

[0026] By adopting the above technical solution, setting up a control console and electrically connecting it to the suction device, the suction direction switching time can be precisely set, allowing the cleaning solvent to flow more rationally between the sample tube and the capillary, thus improving the cleaning effect. The suction frequency can be accurately set, adjusting the solvent flow intensity according to the different conditions of residual asphalt in the capillary to ensure effective removal of residual asphalt. Furthermore, the total cleaning time can be determined, ensuring that cleaning is stopped after completion, reducing the possibility of insufficient cleaning leading to low accuracy in subsequent tests, and reducing the possibility of over-cleaning causing resource waste. This achieves automated control of the cleaning process, reduces manual intervention, and greatly improves cleaning efficiency and quality.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. When cleaning the viscometer is required, the cleaning solvent is injected into the U-shaped viscometer, where the sample tube and capillary tube are connected. Then, the first connecting part of the suction assembly is connected to the end of the sample tube furthest from the capillary tube using the first connecting part, and the second connecting part is connected to the end of the capillary tube furthest from the sample tube using the second connecting part. The suction assembly is then activated, driving the cleaning solvent to flow back and forth between the sample tube and the capillary tube. This back and forth flow of the cleaning solvent effectively and continuously flushes every corner of the capillary tube, thoroughly removing any residual asphalt. This reduces the possibility of damage to the capillary tube caused by manual brushing, which is difficult to fully insert and may come into contact with the inner wall of the capillary. Moreover, compared to manual brushing that cleans each part individually, the suction operation can clean the entire capillary tube and sample tube simultaneously, greatly improving cleaning efficiency and thus enhancing the viscometer cleaning efficiency.

[0029] 2. Place the flexible sleeve on the end of the sample tube furthest from the capillary tube, so that the inner wall of the clamp fits against the outer wall of the flexible sleeve. At this point, the clamp is in its initial installation state. Next, insert the connector into the insertion port of the clamp, and then connect the connector to the locking part with threads. During the tightening of the locking part, the clamp will gradually press against the outer wall of the flexible sleeve, thus achieving a firm connection. This connects the first communication port of the suction assembly to the sample tube, reducing the possibility of leakage at the connection when the suction assembly drives the cleaning solvent to flow back and forth, improving the stability and effectiveness of the cleaning process, and facilitating more efficient removal of residual asphalt in the capillary tube.

[0030] 3. By setting up a control console and electrically connecting it to the suction device, the switching time of the suction direction can be precisely set, allowing the cleaning solvent to flow more rationally between the sample tube and the capillary, thus improving the cleaning effect. The suction frequency can be accurately set, adjusting the solvent flow intensity according to the different conditions of residual asphalt in the capillary to ensure effective removal of residual asphalt. The total cleaning time can also be determined, ensuring that cleaning stops after completion, reducing the possibility of insufficient cleaning leading to low accuracy in subsequent tests, and reducing the possibility of over-cleaning causing resource waste. This achieves automated control of the cleaning process, reduces manual intervention, and greatly improves cleaning efficiency and quality. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0032] Figure 2 This is a schematic diagram showing the position of the clamp component in an embodiment of this application.

[0033] Figure 3 yes Figure 1 Enlarged view of point A in the middle.

[0034] Figure 4 yes Figure 1 Enlarged view of section B in the middle.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Viscometer; 11. Sample tube; 12. Capillary tube; 121. Opening; 122. Thin tube section; 123. Connecting part; 13. Support tube; 2. Suction assembly; 21. First connecting port; 22. Second connecting port; 23. Mounting tube; 24. Fixing sleeve; 25. Connecting tube; 3. First connecting component; 31. Flexible sleeve; 311. Limiting sleeve; 32. Clamp; 321. Semi-ring clamp; 322. Fixing plate; 33. Connecting component; 34. Locking component; 4. Second connecting component; 5. Control console. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0038] This application discloses a cleaning device for a viscometer used in asphalt dynamic viscosity testing.

[0039] Reference Figure 1 and Figure 2A cleaning device for a viscometer used in asphalt dynamic viscosity testing includes a viscometer 1, a cleaning solvent, a suction assembly 2, a first connecting component 3, and a second connecting component 4. The viscometer 1 is U-shaped and includes a sample tube 11 and a capillary tube 12. One end of the sample tube is connected to one end of the capillary tube 12. The cleaning solvent is injected into the viscometer 1. The suction assembly 2 drives the cleaning solvent to reciprocate between the sample tube 11 and the capillary tube 12. The suction assembly 2 is provided with a first connecting port 21, which is connected to the end of the sample tube 11 away from the capillary tube 12 through the first connecting component 3. The suction assembly 2 is provided with a second connecting port 22, which is connected to the end of the capillary tube 12 away from the sample tube 11 through the second connecting component 4. Activating the suction assembly 2 enables the suction assembly 2 to drive the cleaning solvent to flow back and forth between the sample tube 11 and the capillary tube 12, thereby achieving the effect of using the solvent flow to flush the inner wall of the capillary tube 12, achieving the effect of efficient and thorough cleaning of the viscometer 1. The reciprocating flow of the cleaning solvent can act on the inner wall of the capillary tube 12 in all directions, which is more comprehensive and efficient than manual brushing, avoids damage to the inner wall of the capillary tube 12 by the brush, and improves the cleaning efficiency of the viscometer 1.

[0040] In this example, the suction component 2 uses a bidirectional micro vacuum pump, and the suction function is switched by the forward and reverse rotation of the motor in the micro vacuum pump. At the same time, in this example, the cleaning solvent is trichloroethylene solvent.

[0041] The viscometer 1 also includes a support tube 13, with a capillary tube 12 inserted inside the support tube 13. The support tube 13 is used to support and connect the capillary tube 12, providing stable support for the capillary tube 12.

[0042] The capillary tube 12 includes an opening 121, a thin tube 122, and a connecting part 123. One end of the opening 121 is connected to the thin tube 122, and the end of the thin tube 122 away from the opening 121 is connected to the connecting part 123. The end of the connecting part 123 away from the thin tube 122 is connected to the sample tube 11. The outer diameter of the opening 121 is larger than the outer diameter of the thin tube 122. In this embodiment, the outer diameter of the thin tube 122 is 2 mm. The connecting part 123 serves as a transition and connection, allowing the capillary tube 12 and the sample tube 11 to be smoothly connected. The support tube 13 is located at the thin tube 122. One end of the support tube 13 is connected to the end of the opening 121 near the thin tube 122, and the end of the support tube 13 away from the opening 121 is connected to the end of the connecting part 123 near the thin tube 122. The outer diameters of the opening 121, the support tube 13, and the connecting part 123 are the same, forming a smooth annular surface.

[0043] Reference Figure 2 and Figure 3The first connecting component 3 includes a flexible sleeve 31, a clamp 32, a connector 33, and a locking component 34. The flexible sleeve 31 is fitted onto the end of the sample tube 11 away from the capillary tube 12. The inner wall of the clamp 32 fits against the outer wall of the flexible sleeve 31. The clamp 32 has an insertion port. The connector 33 is inserted into the insertion port. The connector 33 is T-shaped. The head of the connector 33 abuts against one of the fixing plates 322. The tail of the connector 33 is threadedly connected to the locking component 34. One side of the locking component 34 abuts against the fixing plate 322. The connector 33 and the locking component 34 abut against the two fixing plates 322 respectively. The clamp 32 is pressed tightly against the outer wall of the hose sleeve 31 by the locking member 34. In this example, the hose sleeve 31 is made of silicone, which has good flexibility and sealing performance. When the hose sleeve 31 is in the relaxed state, the diameter of the hose sleeve 31 is smaller than the diameter of the sample tube 11. When the hose sleeve 31 is fitted onto the sample tube 11, the hose sleeve 31 is in the taut state and can be tightly fitted onto the sample tube 11, reducing the possibility of cleaning solvent leakage. The clamp 32 is used to fix the hose sleeve 31, making its connection with the sample tube 11 more secure. In this example, the connector 33 is a bolt, and the locking member 34 is a nut.

[0044] Specifically, the clamp 32 includes two semi-circular clamps 321, which are hinged together. The semi-circular clamps 321 are connected to a fixing plate 322, and an insertion port is opened on the fixing plate 322. The two fixing plates 322 fit together, and the connecting piece 33 is inserted into the two insertion ports in sequence. This structure makes the clamp 32 easy to install and remove. When replacing the hose sleeve 31, simply loosen the locking piece 34 and open the semi-circular clamp 321.

[0045] Furthermore, a limiting sleeve 311 is fixedly connected to the outer wall of the flexible sleeve 31. The limiting sleeve 311 and the flexible sleeve 31 are integrally formed. The material of the limiting sleeve 311 is the same as that of the flexible sleeve 31. The end of the limiting sleeve 311 near the sample tube 11 abuts against one side of the clamp 32, reducing the possibility of the clamp 32 sliding and further enhancing the stability of the connection.

[0046] Reference Figure 1 and Figure 4 The suction assembly 2 is fixedly connected to an installation tube 23, which is located at the first connecting port 21 and surrounds the first connecting port 21. The installation tube 23 is threadedly connected to a fixing sleeve 24, and the fixing sleeve 24 is rotatably connected to a connecting tube 25. The end of the connecting tube 25 away from the fixing sleeve 24 is fixedly connected to the end of the flexible sleeve 31 away from the limiting sleeve 311. The threaded connection between the installation tube 23 and the fixing sleeve 24 facilitates disassembly and installation, and makes it convenient to maintain and replace the suction assembly 2. The connecting tube 25 serves to connect the suction assembly 2 and the flexible sleeve 31, so that the cleaning solvent can flow smoothly between the sample tube 11 and the capillary tube 12.

[0047] The connection structure between the suction assembly 2 and the sample tube 11 is consistent with the connection structure between the suction assembly 2 and the opening 121. That is, the structures of the first connecting part 3 and the second connecting part 4 are also consistent, which will not be elaborated further here.

[0048] The cleaning device also includes a control console 5, which is used to set the operating parameters of the suction device, including the suction direction switching time, suction frequency and total cleaning time. The control console 5 is electrically connected to the suction device and is equipped with a display screen, so that the operator can intuitively see the various parameters and make adjustments according to actual needs, setting different suction direction switching times and suction frequencies to achieve the best cleaning effect.

[0049] The implementation principle of the cleaning device for a viscometer used in asphalt dynamic viscosity testing according to this application embodiment is as follows: The operator first sets the operating parameters of the suction device via the control panel 5, such as the suction direction switching time, suction frequency, and total cleaning time. Then, the operator rotates the fixing sleeve 24 to tighten the threads of the fixing sleeve and the installation sleeve, thereby connecting the connecting pipe 25 to the suction assembly 2. The hose sleeve 31 is then placed on the sample tube 11. The clamp 32 is opened, and the semi-circular clamp 321 is clamped onto the hose sleeve 31, so that the inner wall of the semi-circular clamp 321 fits against the outer wall of the hose sleeve 31. Simultaneously, one end of the semi-circular clamp 321 abuts against the end of the limiting sleeve 311 near the connecting pipe 25, and the two fixing plates 322 are in contact. The connecting piece 33 is then inserted into the two insertion holes in sequence. The locking piece 34 is fitted onto the connecting piece 33, and the locking piece 34 and the connecting piece 33 are threaded together, thereby causing the two fixing plates 322 to abut against each other, thus achieving clamping of the hose sleeve 31 by the clamp 32. The connection between the suction assembly 2 and the sample tube 11 is established. Subsequently, the connection between the suction assembly 2 and the opening 121 is established using the same structure and steps. The suction assembly 2 is then activated, and the cleaning solvent is driven to reciprocate between the sample tube 11 and the capillary tube 12 using the pressure difference. The cleaning solvent flows from the sample tube 11 into the capillary tube 122. During the flow, its high flow rate and scouring force act on the inner wall of the capillary tube 122, gradually removing the dirt adhering to the inner wall. As the cleaning solvent continues to reciprocate, the dirt is continuously flushed and flows with the cleaning solvent. When the preset total cleaning time is reached, the suction assembly 2 is stopped. At this time, the dirt on the inner wall of the capillary tube 122 has been fully removed, achieving the cleaning of the viscometer 1. This reduces the inefficiency and incompleteness of manual brushing, and also reduces damage to the inner wall of the capillary tube 122, greatly improving cleaning efficiency and quality, increasing the cleaning efficiency of the viscometer 1, and extending the service life of the viscometer 1.

[0050] The above are all preferred embodiments of this application. These embodiments are only explanations of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cleaning device for a viscometer used in asphalt dynamic viscosity testing, characterized in that, include: The viscometer (1) is U-shaped and includes a sample tube (11) and a capillary tube (12). One end of the sample tube is connected to one end of the capillary tube (12). Clean the solvent and inject it into the viscometer (1); The suction assembly (2) is used to drive the cleaning solvent to reciprocate between the sample tube (11) and the capillary tube (12); The first connecting component (3) and the suction assembly (2) are provided with a first connecting port (21), and the first connecting port (21) is connected to the end of the sample tube (11) away from the capillary tube (12) through the first connecting component (3); The second connecting component (4) and the suction assembly (2) are provided with a second connecting port (22), which is connected to the end of the capillary tube (12) away from the sample tube (11) through the second connecting component (4).

2. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 1, characterized in that, The capillary (12) includes an opening (121), a thin tube (122), and a connecting part (123). One end of the opening (121) is connected to the thin tube (122), the end of the thin tube (122) away from the opening (121) is connected to the connecting part (123), and the end of the connecting part (123) away from the thin tube (122) is connected to the sample tube (11).

3. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 1, characterized in that, The viscometer (1) also includes a support tube (13), and a capillary tube (12) is inserted inside the support tube (13). The support tube (13) is used to support and connect the capillary tube (12).

4. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 1, characterized in that, The first connecting part (123) includes a hose sleeve (31), a clamp (32), a connector (33), and a locking part (34). The hose sleeve (31) is fitted onto the end of the sample tube (11) away from the capillary tube (12). The inner wall of the clamp (32) fits against the outer wall of the hose sleeve (31). The clamp (32) has an insertion port. The connector (33) is inserted into the insertion port. The connector (33) is threadedly connected to the locking part (34). The clamp (32) is tightly pressed against the outer wall of the hose sleeve (31) by the locking part (34).

5. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 4, characterized in that, The clamp (32) includes a semi-circular clamp (321), two semi-circular clamps (321) are provided, the two semi-circular clamps (321) are hinged together, the semi-circular clamps (321) are connected to a fixing plate (322), the insertion port is opened in the fixing plate (322), the two fixing plates (322) are fitted together, and the connector (33) is inserted into the two insertion ports in sequence.

6. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 4, characterized in that, The outer wall of the hose sleeve (31) is connected to a limiting sleeve (311), and one end of the limiting sleeve (311) abuts against the clamp (32).

7. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 4, characterized in that, The suction assembly (2) is connected to an installation tube (23), which is located at the first communication port (21). The installation tube (23) is threadedly connected to a fixing sleeve (24), which is rotatably connected to a communication tube (25). The communication tube (25) is connected to a flexible sleeve (31).

8. The cleaning device for a viscometer used for asphalt dynamic viscosity testing according to claim 1, characterized in that, It also includes a control console (5) for setting the operating parameters of the suction device, including the suction direction switching time, suction frequency and total cleaning time. The control console (5) is electrically connected to the suction device.

Images