Asphalt viscosity testing device

Abstract

The present invention discloses an asphalt viscosity testing device, specifically relating to the technical field of asphalt viscosity testing, comprising a device body, a table top fixed to the upper end of the device body, a controller fixed to the front of the upper end of the table top, an installation cavity provided at the left portion of the rear end of the device body, a base provided slidingly on the bottom wall of the installation cavity, a fixing ring fixed to the upper end of the base, a test body placed in the inner cavity of the fixing ring, and a plurality of placement slots provided at the upper end of the fixing ring. The asphalt viscosity testing device described in the present invention can push a cleaning ring to move with the cooperation of an L-shaped drive plate, etc. by pressing the test mechanism, and the cleaning ring will return to its initial position and reset with the cooperation of a follow-up reset mechanism, ensuring that it can be used subsequently and extending the use time. Each time the test mechanism is installed, the inner surface of the glass shell will be cleaned once, thereby improving the light transmittance of the glass shell and facilitating the observation of the state of the asphalt during the detection process.

Description

Technical Field

[0001] The present invention relates to the technical field of asphalt viscosity testing, and in particular to an asphalt viscosity testing device. Background Art

[0002] Asphalt is a dark brown complex mixture of hydrocarbons of different molecular weights and their non-metallic derivatives;

[0003] The viscosity of asphalt is one of the important indicators that determine the quality of asphalt;

[0004] Asphalt viscosity refers to the ability of asphalt to resist shear deformation when asphalt particles displace relative to each other under external forces. Viscosity varies depending on the composition and temperature of the asphalt. Asphalt with a high asphaltene content has a high viscosity, while asphalt viscosity decreases as the ambient temperature rises. Asphalt viscosity is closely related to the mechanical behavior of the asphalt pavement.

[0005] When asphalt is used in scenarios such as road construction, various additives need to be added to the asphalt to modify it so that the asphalt is suitable for the current scenario. In order to detect the impact of the type and weight ratio of additives on the asphalt, the viscosity of the modified asphalt needs to be tested.

[0006] During the test, the asphalt is usually heated. After the asphalt melts, negative pressure is used to draw the asphalt upwards. The rising height of the asphalt under the same pressure, temperature and time is observed to determine the viscosity of the asphalt.

[0007] Asphalt dynamic viscometers in the existing technology all use a water bath heating method to heat the asphalt to be tested. After the water is heated for a long time, scale and other debris in the water will slowly precipitate from the water and adhere to the outer shell containing the water. Generally, the outer shell is made of glass to facilitate observation of the state of the asphalt during the test. Since scale and other debris will adhere to the glass, the light transmittance of the glass will become lower and lower, affecting the line of sight and making it difficult to observe the state of the asphalt. Summary of the Invention

[0008] The main purpose of the present invention is to provide an asphalt viscosity testing device that can effectively solve the problem that scale and the like adhere to the glass, which causes the light transmittance of the glass to become lower and lower, affects the line of sight, and makes it difficult to observe the state of the asphalt.

[0009] To achieve the above object, the technical solution adopted by the present invention is:

[0010] An asphalt viscosity testing device includes an equipment body, a table top is fixed to the upper end of the equipment body, a controller is fixed to the front of the upper end of the table top, an installation cavity is opened at the left portion of the rear end of the equipment body, a base is slidingly provided on the bottom wall of the installation cavity, a fixing ring is fixed to the upper end of the base, a test body is placed in the inner cavity of the fixing ring, a plurality of placement grooves are opened at the upper end of the fixing ring, and a plurality of placement holes are opened in a circular array on the left portion of the upper end of the table top;

[0011] Preferably, a plurality of negative pressure straws are installed on the left rear side of the controller.

[0012] Preferably, the test body includes a glass shell, a plurality of limit plates matching the placement groove 1 on the same side are fixed to the lower part of the outer surface of the glass shell, a glass cover is bonded to the upper end of the glass shell, a plurality of placement grooves 2 matching the placement holes are opened in a ring array on the glass cover, and a testing mechanism is placed in the inner cavity of the plurality of placement grooves 2, a motor heat pipe is fixed to the inner cavity of the glass shell through a rubber ring, a cleaning mechanism is provided on the upper part of the inner cavity of the glass shell, a resetter is fixed to the bottom wall of the inner cavity of the device body, and the input and output ends of the motor heat pipe are provided with power connectors.

[0013] Preferably, the power connector includes two plastic shells, and a permanent magnet and a conductive sheet are fixed to the upper and lower parts of one end of the two plastic shells close to each other, respectively, and a cable is connected to the upper end of one of the plastic shells and the lower end of the other plastic shell;

[0014] Preferably, the magnetic properties of two adjacent permanent magnets are opposite.

[0015] Preferably, the cleaning mechanism includes an upper ring piece fixed to the top of the inner wall of the glass shell and a lower ring piece fixed to the middle of the inner part of the glass shell, the lower end of the upper ring piece is fixedly connected to a plurality of L-shaped lower pressure plates and spring 1 in a circular array, the lower ends of the plurality of springs are all fixedly connected to a cleaning ring, a central mechanism is fixed to the upper part of the resetter, and a plurality of heat collectors are arranged in a circular array outside the central mechanism.

[0016] Preferably, the central mechanism includes an upper fixed plate, a plurality of L-shaped drive plates are fixed in a circular array on the outer side of the upper fixed plate, a support ring is commonly fixed on the outer sides of two adjacent L-shaped drive plates, a plurality of the testing mechanisms are respectively installed in the inner cavities of the plurality of support rings, a plurality of follow-up reset mechanisms are fixed in a common circular array on the inner surface of the lower ring piece and the inner surface of the cleaning ring, and each of the follow-up reset mechanisms is installed below the L-shaped drive plate on the same side.

[0017] Preferably, the follow-up reset mechanism includes a hook-shaped plate 1 fixed to the inner surface of the lower ring piece and a rocking plate rotating on the inner surface of the cleaning ring, the hook-shaped plate 1 is located between the rocking plate and the L-shaped driving plate on the same side, an elastic plate is fixed between the side of the rocking plate away from the hook-shaped plate 1 and the inner surface of the cleaning ring, a triangular fixing block is fixed to the upper end of the rocking plate, the horizontal part of the triangular fixing block is fitted with a hook-shaped plate 2, a lower pressure plate 1 is fixed to the upper end of the hook-shaped plate 2 and is rotatably connected to the upper part of the inner surface of the cleaning ring, and a spring 3 is fixed between the side of a lower end of the lower pressure plate away from the hook-shaped plate 2 and the cleaning ring.

[0018] Preferably, the resetter includes two guide rods, the upper ends of the two guide rods are fixedly connected to the lower end of the upper fixed plate, the outer surfaces of the two guide rods are commonly sliding with a top plate, the middle part of the lower end of the top plate is fixedly connected to a top rod, the lower ends of the two guide rods are commonly fixed with a bottom plate that slides on the outer surface of the top rod, and a spring four is commonly fixed to the outer side of the upper end of the bottom plate and the outer side of the lower end of the top plate.

[0019] Preferably, the heat collector includes a trumpet-shaped heat collecting pipe, which is fixed between two adjacent central mechanisms, and a plurality of spiral guide plates are fixed in a circular array in the inner cavity of the trumpet-shaped heat collecting pipe.

[0020] Preferably, the testing mechanism comprises a rubber round block, the upper end of the rubber round block is provided with two mounting holes, a U-shaped testing tube is placed in the inner cavities of the two mounting holes, and a sealing cap is threadedly mounted on the upper end of the rubber round block.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, after the test mechanism is placed in the support ring cavity, the cleaning ring can be pushed to move with the cooperation of the L-shaped driving plate, etc. by pressing the test mechanism, so as to clean the scale and other debris in the upper observation area on the inner surface of the glass shell. Then, with the cooperation of the follow-up reset mechanism, the cleaning ring will return to its initial position again and automatically reset its own structure to ensure that it can continue to be used. In this way, there is no need to frequently clean the inner cavity of the glass shell, thereby extending the service life. In addition, the inner surface of the glass shell will be cleaned once each time the test mechanism is installed, thereby improving the light transmittance of the glass shell and facilitating the observation of the state of the asphalt during the detection process.

[0023] 2. In the present invention, after the test body is pushed into the installation cavity, the two adjacent permanent magnets attract each other, and the two adjacent conductive sheets can be automatically connected together without the need for separate connection, saving time and effort.

[0024] 3. In the present invention, the range of heat collection can be expanded through the lower opening of the trumpet-shaped heat collection pipe. At the same time, the hot water entering the inner cavity of the trumpet-shaped heat collection pipe can automatically rotate and mix under the spiral action of a number of spiral guide plates, thereby improving the uniformity of heat rise and further increasing the melting speed of asphalt. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0027] Figure 3 For the present invention Figure 2 A in the middle is an enlarged schematic diagram;

[0028] Figure 4 This is a schematic diagram of the overall structure of the test body of the present invention;

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the test body of the present invention;

[0030] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0031] Figure 7 It is a schematic diagram of the overall structure of the cleaning mechanism of the present invention;

[0032] Figure 8 For the present invention Figure 7 Enlarged schematic diagram at point C in the middle;

[0033] Figure 9 This is a schematic diagram of the overall structure of the central mechanism of the present invention;

[0034] Figure 10 For the present invention Figure 9 The enlarged schematic diagram of point D in the middle;

[0035] Figure 11 For the present invention Figure 10 The enlarged schematic diagram at E in the middle;

[0036] Figure 12 This is a schematic diagram of the overall structure of the cleaning mechanism of the present invention from another perspective;

[0037] Figure 13 For the present invention Figure 12 The enlarged schematic diagram at F in the middle;

[0038] Figure 14 It is a schematic diagram of the local structure of the present invention;

[0039] Figure 15 It is a schematic diagram of the local structure of the present invention.

[0040] In the figure: 1. Equipment body; 2. Mounting cavity; 3. Base; 4. Fixing ring; 5. Test body; 51. Glass shell; 52. Limiting plate; 53. Test mechanism; 531. Rubber round block; 532. U-shaped test tube; 533. Sealing cap; 54. Motor heat pipe; 55. Cleaning mechanism; 551. Upper ring piece; 552. L-shaped lower pressure plate; 553. Spring 1; 554. Cleaning ring; 555. Lower ring piece; 556. Center mechanism; 5561. Upper fixing plate; 5562. Support ring; 5563. L-shaped driving plate; 5565. Follow-up reset mechanism; 5571. Hook plate 1; 55 72. Rocking plate; 5573. Elastic sheet; 5574. Triangular fixing block; 5575. Lower pressure plate 1; 5576. Hook plate 2; 5577. Spring 3; 558. Heat collector; 5581. Trumpet-shaped heat collector tube; 5582. Spiral guide plate; 56. Resetter; 561. Guide rod; 562. Top plate; 563. Spring 4; 564. Bottom plate; 565. Push rod; 57. Power connector; 571. Plastic housing; 572. Permanent magnet; 573. Conductive sheet; 58. Glass cover; 6. Table top; 7. Controller; 8. Negative pressure straw; 9. Placement hole; 10. Placement slot 1. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0042] Example 1, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, an asphalt viscosity testing device includes an equipment body 1, a table 6 is fixed to the upper end of the equipment body 1, a controller 7 is fixed to the front of the upper end of the table 6, an installation cavity 2 is opened at the left side of the rear end of the equipment body 1, a base 3 is slidingly provided on the bottom wall of the installation cavity 2, a fixing ring 4 is fixed to the upper end of the base 3, a test body 5 is placed in the inner cavity of the fixing ring 4, a plurality of placement grooves 10 are opened at the upper end of the fixing ring 4, and a plurality of placement holes 9 are opened in a circular array on the left side of the upper end of the table 6;

[0043] The device body 1, table 6 and controller 7 in this case can together constitute a test device;

[0044] Several negative pressure pumps are also installed on the right side of the inner cavity of the equipment body 1 to provide negative pressure. The controller 7 can control multiple negative pressure pumps to operate individually or simultaneously. In addition, several negative pressure suction pipes 8 respectively pass through the controller 7 and extend into the interior of the equipment body 1 and are respectively connected to the input ends of the negative pressure pumps in the inner cavity of the equipment body 1 for performing negative pressure extraction operations on the melted asphalt.

[0045] During the implementation process, magnets with opposite magnetic properties are installed on the lower part of the rear side wall of the installation cavity 2 and on the front end of the base 3 to fix the position of the base 3 so that it will not shake due to external forces during use, thereby improving the safety and accuracy of the test.

[0046] A plurality of limiting plates 52 are fixed to the lower portion of the outer surface of the glass shell 51 and are matched with the placement groove 10 on the same side;

[0047] In this case, the test body 5 and the device body 1 in the test device are designed to be split, that is, the test body 5 and other structures can be taken out, and the user can perform subsequent maintenance, cleaning and other operations on the device by himself.

[0048] For ease of use, the present invention also provides a plurality of placement slots 10 on the fixing ring 4 and a plurality of limiting plates 52 on the outside of the test body 5. When placing the test body 5 into the inner cavity of the fixing ring 4, the two power connectors 57 are first arranged on the left and the right, and the limiting plates 52 are aligned with the placement slots 10 respectively. Subsequently, the limiting plates 52 are respectively inserted into the inner cavities of the placement slots 10 and cooperate with the fixing ring 4 to fix the test body 5.

[0049] The fixing ring 4 in this case is made of metal material, and a rubber sheet is pasted on its inner surface to provide friction between it and the test body 5.

[0050] In this case, a spotlight is installed on the top wall of the installation cavity 2 to increase the brightness of the inner cavity of the glass shell 51. At the same time, multiple infrared thermometers are installed on the vertical side walls of the inner cavity of the installation cavity 2 to monitor the temperature of the water in the inner cavity of the glass shell 51 in real time.

[0051] In the second embodiment, in order to better display the status of the sample during the test, that is, to more conveniently observe the sample being tested, refer to Figure 5 In this embodiment, the test body 5 includes a glass shell 51, and a plurality of placement slots are each provided with a test mechanism 53. A motor heat pipe 54 is fixed to the inner cavity of the glass shell 51 via a rubber ring. A cleaning mechanism 55 is provided on the upper portion of the inner cavity of the glass shell 51. A resetter 56 is fixed to the bottom wall of the inner cavity of the device body 1. The input and output ends of the motor heat pipe 54 are both provided with power connectors 57.

[0052] During the implementation of this embodiment, the viscosity of the asphalt is tested using the testing mechanism 53, and the testing process is as follows:

[0053] A plurality of negative pressure suction pipes 8 are installed on the left side of the rear side of the controller 7;

[0054] A plurality of placement grooves 2 that match the placement holes 9 are formed in an annular array on the glass cover 58 .

[0055] The testing mechanism 53 includes a rubber round block 531 . Two mounting holes are provided on the upper end of the rubber round block 531 . U-shaped testing tubes 532 are placed in the inner cavities of the two mounting holes. A sealing cap 533 is threadedly mounted on the upper end of the rubber round block 531 .

[0056] As explained in the prior art, asphalt is liquid at room temperature and pressure. Asphalt has a very high viscosity at room temperature, its natural collapse rate is very slow, and changes in the asphalt's appearance cannot be observed with the naked eye. Therefore, in order to improve the efficiency of asphalt viscosity detection, it is necessary to use the motor heat pipe 54 in this case to increase the temperature of the asphalt.

[0057] In addition, the inner cavity of the glass shell 51 in this case is filled with water, and the asphalt is heated by water bath heating.

[0058] Depend on Figure 12 and Figure 13 It can be seen that the U-shaped test tube 532 is composed of a glass tube with a larger diameter and a thin glass tube with a smaller diameter. The two are hot-melt-molded into one piece at high temperature, and scales are etched on the thin glass tube. When not in use, they are respectively passed through the two mounting holes on the rubber round block 531 and the opening of the U-shaped test tube 532 is sealed using the sealing cap 533.

[0059] The rubber ball 531 is made of rubber material, which can provide friction to fix the position of the U-shaped test tube 532 during the implementation process.

[0060] In combination with the above, it can be seen that the method of using the testing mechanism 53 is:

[0061] First, prepare multiple groups of asphalt sample particles to be tested;

[0062] Then, the sealing cap 533 is rotated to separate the sealing cap 533 from the rubber round block 531;

[0063] Next, a sufficient amount of asphalt granules is poured into the opening of the thick glass tube, and the rubber ball 531 is placed on the support ring 5562 through the placement hole 9 and the placement groove 2 on the same side. The motor heat pipe 54 is used to heat the water in the inner cavity of the glass shell 51 to melt the asphalt granules.

[0064] Finally, connect the negative pressure pipette 8 to the thin glass tube, and use the controller 7 to start the negative pressure pump to generate negative pressure to draw the molten asphalt in the thin glass tube upward. Under the same time, pressure and temperature, observe the rising height of the asphalt in the cavity of the thin glass tube in each group, and then determine the viscosity of the asphalt;

[0065] The number of the placement holes 9, the placement groove 2 and the support ring 5562 mentioned above is the same, and they can all be customized according to user needs. The number of the placement holes 9, the placement groove 2 and the support ring 5562 can be selected according to different usage scenarios or different detection frequencies.

[0066] In addition, a glass cover 58 is bonded to the upper end of the glass housing 51. The glass cover 58 is connected to the glass housing 51 using hot melt adhesive or the like. This prevents water from overflowing from the inner cavity of the glass housing 51 due to inertia during the movement of the glass housing 51. The hot melt adhesive can be melted again when exposed to high temperatures, thus facilitating later maintenance operations on the parts inside the glass housing 51.

[0067] Generally, the melting point of hot melt adhesive is 150℃, so during the process of heating asphalt in a water bath, the temperature of the asphalt is generally 60℃±0.1℃. The temperature difference between the two is large, so the temperature of the water will not affect the stability of the hot melt adhesive during the heating process.

[0068] Example 3: In order to accurately observe the state of the asphalt and the scale position of the asphalt liquid level after the test, refer to Figure 5 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 and Figure 12 The cleaning mechanism 55 includes an upper ring piece 551 fixed to the top of the inner wall of the glass shell 51 and a lower ring piece 555 fixed to the middle part of the glass shell 51. The lower end of the upper ring piece 551 is fixedly connected to a plurality of L-shaped lower pressure plates 552 and springs 553 in a circular array. The lower ends of the plurality of springs 553 are all fixedly connected to a cleaning ring 554. A central mechanism 556 is fixed to the upper part of the resetter 56.

[0069] The outer diameters of the upper ring piece 551 and the lower ring piece 555 are both larger than the inner diameter of the glass shell 51. The upper ring piece 551 and the lower ring piece 555 are both composed of a metal ring and a rubber ring. The rubber ring is adhered to the outside of the metal ring. The outer diameter of the rubber ring is slightly larger than the inner diameter of the glass shell 51. By utilizing the high friction coefficient of rubber, the upper ring piece 551 is firmly installed in the upper part of the inner cavity of the glass shell 51 to prevent it from sliding downward under the drag of the spring 1 553. The lower ring piece 555 is installed in the middle of the inner cavity of the glass shell 51 to prevent it from moving arbitrarily under the pressure of the spring 1 553.

[0070] During implementation, when the cleaning ring 554 is not in use, it is located at the upper part of the inner cavity of the glass shell 51. During use, it can be moved to the middle of the inner cavity of the glass shell 51 to clean the inner surface of the glass at the observation position, thereby ensuring the cleanliness of the observation area, improving the accuracy of observation, and facilitating use.

[0071] The cleaning ring 554 is made of engineering plastic, and the Mohs hardness of the engineering plastic is lower than the hardness of the glass housing 51, but higher than the Mohs hardness of scale. Therefore, the cleaning ring 554 will not damage the inner surface of the glass housing 51 during the operation.

[0072] In addition, the upper and lower end surfaces of the cleaning ring 554 are chamfered, so that the upper and lower end surfaces of the cleaning ring 554 can be used to easily clean the attachments on the inner surface of the glass shell 51 .

[0073] For details, see Figure 9 In this embodiment, the resetter 56 includes two guide rods 561, the upper ends of the two guide rods 561 are fixedly connected to the lower end of the upper fixed plate 5561, the outer surfaces of the two guide rods 561 are commonly sliding with a top plate 562, the middle part of the lower end of the top plate 562 is fixedly connected to a top rod 565, the lower ends of the two guide rods 561 are commonly fixed with a bottom plate 564 that slides on the outer surface of the top rod 565, and the outer side of the upper end of the bottom plate 564 and the outer side of the lower end of the top plate 562 are commonly fixed with a spring four 563.

[0074] For details, see Figure 9 In this embodiment, the central mechanism 556 includes an upper fixed plate 5561, and a plurality of L-shaped driving plates 5563 are fixed in a circular array on the outer side of the upper fixed plate 5561. A supporting ring 5562 is commonly fixed on the outer sides of two adjacent L-shaped driving plates 5563. A plurality of testing mechanisms 53 are respectively installed in the inner cavities of the plurality of supporting rings 5562. A plurality of follow-up reset mechanisms 5565 are fixed in a circular array on the inner surface of the lower ring piece 555 and the inner surface of the cleaning ring 554. Each follow-up reset mechanism 5565 is installed below the L-shaped driving plate 5563 on the same side.

[0075] For details, see Figure 9 5576 , which is a horizontal part of the triangular fixing block 5574 , is affixed to the upper end of the rocking plate 5575 , which is rotatably connected to the upper inner surface of the cleaning ring 554 . A spring three 5577 is affixed to the lower end of the lower pressing plate 5575 , which is a horizontal part of the triangular fixing block 5574 .

[0076] As can be seen from the above, after the glass housing 51 is installed in the inner cavity of the fixing ring 4 and pushed into the inner cavity of the installation cavity 2 through the base 3, the plurality of supporting rings 5562 are aligned with the plurality of placement holes 9 respectively, and then the test mechanism 53 containing asphalt particles is placed in sequence on the upper part of the inner cavity of the supporting ring 5562 on the same side through the placement holes 9, and the testing mechanism 53 is supported by the supporting ring 5562. Then, the testing mechanism 53 is pressed hard, thereby driving the upper fixing plate 5561, the supporting ring 5562, and the L-shaped driving plate 5563 to move downward synchronously. When the L-shaped driving plate 5563 contacts the follow-up reset mechanism 5565, it drives the cleaning ring 554 to move synchronously, and the observation area on the upper part of the inner cavity of the glass housing 51 is scraped and cleaned by the cleaning ring 554. During this process, the plurality of springs 553 will be stretched to generate torque.

[0077] When the cleaning ring 554 gradually approaches the lower ring piece 555, refer to Figure 11 , the hook-shaped plate 1 5571 will contact the rocking plate 5572. Since the rocking plate 5572 is tilted in its natural state, the hook-shaped plate 1 5571 will push open the rocking plate 5572 during its descent, causing it to rotate counterclockwise, thereby gradually separating the triangular fixing block 5574 from the hook-shaped plate 2 5576.

[0078] After the hook plate 2 5576 is separated from the triangular fixing block 5574, the lower pressing plate 1 5575 rotates clockwise under the drag of the spring 3 5577 and the pressure of the hook plate 2 5576. The L-shaped driving plate 5563 instantly moves under the lower pressing plate 1 5575, releasing the connection between the L-shaped driving plate 5563 and the lower pressing plate 1 5575.

[0079] Then, under the pull of spring 1 553 , the cleaning ring 554 moves upward to the upper part of the inner cavity of the glass shell 51 to the initial position;

[0080] When the cleaning ring 554 gradually moves to the initial position, the triangular fixing block 5574 and the lower pressure plate 1 5575 are in a separated state. After the lower pressure plate 1 5575 contacts the L-shaped lower pressure plate 552 located directly above it, the lower pressure plate 1 5575 will be squeezed away from one side of the L-shaped driving plate 5563 by the L-shaped lower pressure plate 552. At the same time, the hook plate 2 5576 will squeeze the triangular fixing block 5574 to make it rotate again to squeeze the elastic sheet 5573. When the hook plate 2 5576 moves below the triangular fixing block 5574 again, under the elastic force of the elastic sheet 5573, the triangular fixing block 5574 will be connected with the hook plate 2 5576 again, and the position of the lower pressure plate 1 5575 will be locked again. At the same time, the spring 3 5577 will be pulled again to generate elastic force.

[0081] Secondly, when pressure is applied to the test mechanism 53, the two guide rods 561 will press the bottom plate 564 downward, and then the spring four 563 will be stretched to generate elastic force. When the pressure applied to the test mechanism 53 is released, the spring four 563 will release the accumulated elastic force, and push the upper fixing plate 5561, the supporting ring 5562 and the L-shaped driving plate 5563 upward and restore them to their initial positions. In the process of the L-shaped driving plate 5563 moving upward, the L-shaped driving plate 5563 will lift the side of the lower pressing plate 5575 close to the L-shaped driving plate 5563 upward, and the lower pressing plate 5575 will be lifted upward. 575 rotates counterclockwise again, and the lower pressure plate 1 5575 squeezes the triangular fixing block 5574 outward, and the hook plate 2 5576 separates from the triangular fixing block 5574. When the L-shaped driving plate 5563 moves to the upper part of the lower pressure plate 1 5575, the lower pressure plate 1 5575 rotates clockwise again under the drag of the spring 3 5577, and the hook plate 2 5576 and the triangular fixing block 5574 fit together again and return to the initial state, waiting for the next time to continue to push the cleaning ring 554 to move by the L-shaped driving plate 5563 to clean the inner surface of the glass shell 51.

[0082] Example 5: In this embodiment, in order to facilitate subsequent maintenance and installation, the power can be automatically disconnected or connected. Figure 6 In this case, the power connector 57 includes two plastic shells 571. A permanent magnet 572 and a conductive sheet 573 are fixed to the upper and lower parts of the ends of the two plastic shells 571 that are close to each other, respectively. A cable is connected to the upper end of one plastic shell 571 and the lower end of the other plastic shell 571.

[0083] The magnetic properties of two adjacent permanent magnets 572 are opposite.

[0084] The permanent magnet 572 mentioned above can be replaced with a rectangular ring magnet according to the actual situation. The conductive sheet 573 is placed at the center of the rectangular ring magnet. The distance between the two conductive sheets 573 is smaller than the distance between the two permanent magnets 572. That is, when the two conductive sheets 573 are tightly attached, the two permanent magnets 572 are only close to each other but not attached together. There is a gap between the two permanent magnets 572, which serves to tightly attach the two conductive sheets 573 to ensure normal power transmission.

[0085] The conductive sheet 573 may be made of a conductive material such as copper.

[0086] In this case, a rubber ring is installed on the upper portion of the outer surface of the motor heat pipe 54, and the motor heat pipe 54 is inserted into the hole reserved for the motor heat pipe 54 in the glass cover 58 through the rubber ring;

[0087] The motor heat pipe 54 in this case is composed of the following structure:

[0088] Heating wire: This is the core component of the entire electric heating rod, responsible for generating heat. The heating wire is usually made of nickel-chromium alloy wire or tungsten wire.

[0089] Protective sleeve: The protective sleeve is used to protect the heating wire from mechanical damage and external environmental influences. It is usually made of corrosion-resistant materials such as stainless steel, copper, and aluminum.

[0090] Insulation material: Insulation material is used to isolate the heating wire and the protective sleeve to prevent current leakage and short circuit. Commonly used insulation materials include alumina ceramic, silica, quartz, glass fiber, etc.

[0091] Cable: The cable is the part that connects the electric heating rod to the power supply. It is usually composed of conductive copper or aluminum wire, insulation layer, etc.

[0092] The cable in this case is electrically connected to the cable inside the motor heat pipe 54, and a hollow elastic plastic rod is sheathed on the outer surface of the cable in this case. The upper and lower ends of one elastic plastic rod are respectively connected to the plastic shell 571 and the motor heat pipe 54, and the other elastic plastic rod is connected to the other plastic shell 571 and the table 6. The elastic plastic rod can be deformed and bent, but its length will not change, and is used to protect the cable in this case from being pulled and dragged, thereby ensuring stable power transmission;

[0093] After the test body 5 is pushed into the inner cavity of the installation cavity 2, the two adjacent permanent magnets 572 attract each other, and the two adjacent conductive sheets 573 are automatically connected together, without the need for separate connection, saving time and effort.

[0094] In order to ensure that there is no leakage during the power transmission process, a baffle can be added during the implementation process to isolate the power connector 57 from the adjacent test mechanism 53.

[0095] Example 6: To improve thermal efficiency, the asphalt pellets are heated rapidly. Figure 14 In this case, a plurality of heat collectors 558 are arranged in an annular array outside the central mechanism 556. The heat collectors 558 include trumpet-shaped heat collecting pipes 5581. The trumpet-shaped heat collecting pipes 5581 are fixed between two adjacent central mechanisms 556. A plurality of spiral guide pieces 5582 are fixed in an annular array inside the trumpet-shaped heat collecting pipes 5581.

[0096] During the process of heating water, according to the characteristics of heat, the heat generated by the motor heat pipe 54 will move upward and dissipate. In order to gather heat, a trumpet-shaped heat collection pipe 5581 and a spiral guide plate 5582 are added in this case. The lower mouth of the trumpet-shaped heat collection pipe 5581 can expand the range of heat collection. At the same time, the hot water entering the inner cavity of the trumpet-shaped heat collection pipe 5581 can automatically rotate and mix under the spiral action of several spiral guide plates 5582, thereby improving the uniformity of heat rise and further increasing the melting speed of asphalt.

[0097] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt viscosity testing device, comprising a device body (1), characterized in that: A table top (6) is fixed to the upper end of the device body (1), a controller (7) is fixed to the front of the upper end of the table top (6), a mounting cavity (2) is provided at the left of the rear end of the device body (1), a base (3) is provided on the bottom wall of the inner cavity of the mounting cavity (2), a fixing ring (4) is fixed to the upper end of the base (3), a test body (5) is placed in the inner cavity of the fixing ring (4), a plurality of placement grooves (10) are provided at the upper end of the fixing ring (4), and a plurality of placement holes (9) are provided in a circular array at the left of the upper end of the table top (6); A plurality of negative pressure suction pipes (8) are installed on the left rear side of the controller (7); The test body (5) includes a glass shell (51), a plurality of limit plates (52) matched with the placement groove 1 (10) on the same side are fixed on the lower part of the outer surface of the glass shell (51), a glass cover (58) is bonded to the upper end of the glass shell (51), a plurality of placement grooves 2 matched with the placement holes (9) are opened in a circular array on the glass cover (58), and a test mechanism (53) is placed in the inner cavity of the plurality of placement grooves 2, a motor heat pipe (54) is fixed to the inner cavity of the glass shell (51) through a rubber ring, a cleaning mechanism (55) is provided on the upper part of the inner cavity of the glass shell (51), a resetter (56) is fixed to the bottom wall of the inner cavity of the device body (1), and the input end and output end of the motor heat pipe (54) are both provided with a power connector (57); The cleaning mechanism (55) includes an upper ring piece (551) fixed to the top of the inner wall of the glass shell (51) and a lower ring piece (555) fixed to the middle of the inner wall of the glass shell (51); the lower end of the upper ring piece (551) is fixedly connected to a plurality of L-shaped lower pressure plates (552) and springs (553) in an annular array; the lower ends of the plurality of springs (553) are all fixedly connected to a cleaning ring (554); the upper part of the resetter (56) is fixed to a central mechanism (556); and the outer side of the central mechanism (556) is provided with a plurality of heat collectors (558) in an annular array; The resetter (56) includes two guide rods (561), the upper ends of the two guide rods (561) are fixedly connected to the lower end of the upper fixed plate (5561), the outer surfaces of the two guide rods (561) are commonly slid with a top plate (562), the middle part of the lower end of the top plate (562) is fixedly connected to a top rod (565), the lower ends of the two guide rods (561) are commonly fixed with a bottom plate (564) that slides on the outer surface of the top rod (565), and the outer side of the upper end of the bottom plate (564) and the outer side of the lower end of the top plate (562) are commonly fixed with a spring four (563).

2. The asphalt viscosity testing device according to claim 1, characterized in that: The power connector (57) includes two plastic shells (571), and a permanent magnet (572) and a conductive sheet (573) are fixed to the upper and lower parts of the ends of the two plastic shells (571) close to each other, respectively. The upper end of one of the plastic shells (571) and the lower end of the other plastic shell (571) are both connected to cables. The magnetism of two adjacent permanent magnets (572) is opposite.

3. The asphalt viscosity testing device according to claim 1, characterized in that: The central mechanism (556) includes an upper fixed plate (5561), a plurality of L-shaped drive plates (5563) are fixed in a circular array on the outer side of the upper fixed plate (5561), a support ring (5562) is fixed on the outer sides of two adjacent L-shaped drive plates (5563), a plurality of the testing mechanisms (53) are respectively installed in the inner cavities of the plurality of support rings (5562), a plurality of follow-up reset mechanisms (5565) are fixed in a circular array on the inner surface of the lower ring plate (555) and the inner surface of the cleaning ring (554), and each of the follow-up reset mechanisms (5565) is installed below the L-shaped drive plate (5563) on the same side.

4. The asphalt viscosity testing device according to claim 3, characterized in that: The follow-up reset mechanism (5565) includes a hook-shaped plate (5571) fixed to the inner surface of the lower ring plate (555) and a rocking plate (5572) rotating on the inner surface of the cleaning ring (554). The hook-shaped plate (5571) is located between the rocking plate (5572) and the L-shaped driving plate (5563) on the same side. An elastic plate (5573) is fixed between the side of the rocking plate (5572) away from the hook-shaped plate (5571) and the inner surface of the cleaning ring (554). A triangular fixing block (5574) is fixed to the upper end of the rocking plate (5572), a hook-shaped plate 2 (5576) is attached to the horizontal portion of the triangular fixing block (5574), a lower pressure plate 1 (5575) rotatably connected to the upper inner surface of the cleaning ring (554) is fixed to the upper end of the hook-shaped plate 2 (5576), and a spring 3 (5577) is fixed between the side of the lower end of the lower pressure plate 1 (5575) away from the hook-shaped plate 2 (5576) and the cleaning ring (554).

5. The asphalt viscosity testing device according to claim 1, characterized in that: The heat collector (558) includes a trumpet-shaped heat collecting pipe (5581), which is fixed between two adjacent central mechanisms (556). A plurality of spiral guide plates (5582) are fixed in a circular array in the inner cavity of the trumpet-shaped heat collecting pipe (5581).

6. The asphalt viscosity testing device according to claim 1, characterized in that: The testing mechanism (53) comprises a rubber round block (531), the upper end of the rubber round block (531) is provided with two mounting holes, a U-shaped testing tube (532) is placed in the inner cavity of the two mounting holes, and a sealing cap (533) is threadedly mounted on the upper end of the rubber round block (531).

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