Asphalt viscosity testing device

Abstract

The invention discloses an asphalt viscosity testing device, and particularly relates to the technical field of asphalt viscosity test.The asphalt viscosity testing device comprises an equipment body, a table plate is fixed to the upper end of the equipment body, a controller is fixed to the front portion of the upper end of the table plate, a mounting cavity is formed in the left portion of the rear end of the equipment body, and a base is slidably arranged on the bottom wall of an inner cavity of the mounting cavity; a fixing ring is fixed at the upper end of the base, a test main body is placed in an inner cavity of the fixing ring, and a plurality of placing grooves I are formed in the upper end of the fixing ring. According to the asphalt viscosity testing device disclosed by the invention, the cleaning ring can be pushed to move under the cooperation of the L-shaped driving plate and the like by pressing the testing mechanism, and the cleaning ring can be reset to the initial position again under the cooperation of the follow-up resetting mechanism, so that the asphalt viscosity testing device can be continuously used subsequently, and the service time is prolonged; and the inner surface of the glass shell is cleaned once when the testing mechanism is mounted every time, so that the light transmission of the glass shell is improved, and the state of asphalt in the detection process is convenient to observe.

Description

Technical Field

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

[0002] Bitumen 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] The viscosity of asphalt refers to the ability of asphalt to resist shear deformation when asphalt particles are displaced relative to each other under the action of external forces. The viscosity depends on the composition and temperature of the asphalt. Asphalt with a high asphaltene content has a high viscosity, and the viscosity of asphalt decreases when the ambient temperature rises. The viscosity of asphalt is closely related to the mechanical behavior of asphalt pavement;

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

[0006] During the test, the asphalt generally needs to be heated. After the asphalt is melted, negative pressure is used to draw the asphalt upward to see how high it rises under the same pressure, temperature and time, and then determine the viscosity of the asphalt.

[0007] Asphalt dynamic viscometers in the prior art 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 out of the water and adhere to the outer shell that holds the water. Generally, the outer shell is made of glass, which is convenient for observing the state of the asphalt during the test. Since scale and the like 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, which can effectively solve the problem that scale and the like will adhere to the glass, which will cause the light transmittance of the glass to become lower and lower, affecting the line of sight and making 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, comprising an equipment body, a table top is fixed on the upper end of the equipment body, a controller is fixed on the front of the upper end of the table top, an installation cavity is opened on the left of the rear end of the equipment body, a base is slidably provided on the bottom wall of the installation cavity, a fixing ring is fixed on 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 on the upper end of the fixing ring, and a plurality of placement holes are opened in a circular array on the left 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 comprises 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 arranged in a circular array on the glass cover, a plurality of the placement grooves 2 are placed in the inner cavities with test mechanisms, 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 equipment body, and power connectors are provided at the input and output ends of the motor heat pipe.

[0013] Preferably, the power connector comprises two plastic shells, and permanent magnets and conductive sheets are fixed to the upper and lower parts of the ends of the two plastic shells close to each other, respectively, and cables are 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 comprises 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 part of the glass shell, a plurality of L-shaped lower pressure plates and springs are fixedly connected in an annular array at the lower end of the upper ring piece, a cleaning ring is fixedly connected to the lower ends of the plurality of springs, a central mechanism is fixed to the upper part of the resetter, and a plurality of heat collectors are arranged in an annular 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 sheet and the inner surface of the cleaning ring, and each of the follow-up reset mechanisms is installed under the L-shaped drive plate on the same side.

[0017] Preferably, the follow-up reset mechanism includes a hook plate 1 fixed to the inner surface of the lower ring plate and a rocking plate rotating on the inner surface of the cleaning ring, the hook plate 1 is located between the rocking plate and the L-shaped driving plate on the same side, an elastic sheet is fixed between the side of the rocking plate away from the hook plate 1 and the inner surface of the cleaning ring, a triangular fixing block is fixed to the upper end of the rocking plate, a hook plate 2 is attached to the horizontal part of the triangular fixing block, a lower pressure plate 1 rotatably connected to the upper part of the inner surface of the cleaning ring is fixed to the upper end of the hook plate 2, a spring 3 is fixed between the side of a lower end of the lower pressure plate away from the hook 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, a top plate is commonly slid on the outer surfaces of the two guide rods, a top rod is fixedly connected to the middle part of the lower end of the top plate, a bottom plate that slides on the outer surface of the top rod is commonly fixed to the lower ends of the two guide rods, 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 comprises 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 up the scale and other debris in the upper observation area of ​​the inner surface of the glass shell. Then, with the cooperation of the follow-up reset mechanism, the cleaning ring will return to the initial position again and automatically reset its own structure to ensure that it can continue to be used later. In this way, there is no need to frequently clean the inner cavity of the glass shell, thereby extending the use time. 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 inner cavity of 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, thus 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 be automatically rotated and mixed 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 The enlarged schematic diagram at A in the middle;

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

[0029] Figure 5 It 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 The enlarged schematic diagram at C in the middle;

[0033] Fig. 9 It is a schematic diagram of the overall structure of the central mechanism of the present invention;

[0034] Fig.10 For the present invention Fig. 9 The enlarged schematic diagram at D in the middle;

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

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

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

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

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

[0040] In the figure: 1. Equipment body; 2. Installation 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 one; 5576. Hook plate two; 5577. Spring three; 558. Heat collector; 5581. Trumpet heat collector tube; 5582. Spiral guide sheet; 56. Resetter; 561. Guide rod; 562. Top sheet; 563. Spring four; 564. Bottom sheet; 565. Top rod; 57. Power connector; 571. Plastic shell; 572. Permanent magnet; 573. Conductive sheet; 58. Glass cover; 6. Table top; 7. Controller; 8. Negative pressure straw; 9. Placement hole; 10. Placement slot one. DETAILED DESCRIPTION

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

[0042] Embodiment 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 on the upper end of the equipment body 1, a controller 7 is fixed on the front of the upper end of the table 6, an installation cavity 2 is opened at the left of the rear end of the equipment body 1, a base 3 is slidably provided on the bottom wall of the inner cavity of the installation cavity 2, a fixing ring 4 is fixed on 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 on the upper end of the fixing ring 4, and a plurality of placement holes 9 are opened in a circular array on the left of the upper end of the table 6;

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

[0044] A plurality of negative pressure pumps are installed on the right side of the inner cavity of the equipment body 1 to provide negative pressure. The controller 7 can control the plurality of negative pressure pumps to operate individually or simultaneously. In addition, a plurality of negative pressure suction pipes 8 respectively penetrate the controller 7 and extend into the equipment body 1 and are respectively connected to the input end of the negative pressure pump in the inner cavity of the equipment body 1 to perform 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 limit plates 52 are fixed to the lower part of the outer surface of the glass shell 51 and are matched with the placement grooves 10 on the same side;

[0047] In this case, the test body 5 and the equipment 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 the convenience of use, in this case, a plurality of placement grooves 10 are provided on the fixing ring 4, and a plurality of limit plates 52 are installed on the outside of the test body 5. When the test body 5 is placed in the inner cavity of the fixing ring 4, the two power connectors 57 are first arranged on the left and the right, and the plurality of limit plates 52 are respectively aligned with the plurality of placement grooves 10, and then the plurality of limit plates 52 are respectively inserted into the inner cavities of the plurality of placement grooves 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 the inner surface thereof to provide friction between the fixing ring 4 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 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, a plurality of placement slots are provided with test mechanisms 53 in their inner cavities, 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 at 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 a power connector 57 is provided at the input end and the output end of the motor heat pipe 54;

[0052] In the implementation process of this embodiment, the testing mechanism 53 is used to test the viscosity of asphalt, and the testing process is as follows:

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

[0054] A plurality of placement grooves 2 matching the placement holes 9 are provided in an annular array on the glass upper 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 . A U-shaped testing tube 532 is placed in the inner cavities of the two mounting holes. A sealing cap 533 is threadedly installed 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 and collapses very slowly, and the changes in the appearance of asphalt cannot be observed by the naked eye. Therefore, in order to improve the detection efficiency of asphalt viscosity, 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 Fig.12 and Fig.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 round block 531 mentioned above is made of rubber material, and the rubber material 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 particles is poured into the opening of the thick glass tube, and the rubber ball 531 is placed in the position of the support ring 5562 through the placement hole 9 and the placement groove 2 on the same side, and the motor heat pipe 54 is used to heat the water in the inner cavity of the glass shell 51 to melt the asphalt particles;

[0064] Finally, the negative pressure suction tube 8 is connected to the thin glass tube, and the negative pressure pump is turned on by the controller 7 to generate negative pressure to draw the melted asphalt in the thin glass tube upward. Under the same time, pressure and temperature, the rising height of the asphalt in the inner cavity of the thin glass tube in each group is observed, and then the viscosity of the asphalt is determined;

[0065] The number of the placement holes 9, the placement grooves 2 and the support rings 5562 mentioned above is the same and can be customized according to user needs. The number of the placement holes 9, the placement grooves 2 and the support rings 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 shell 51, and the glass cover 58 is connected to the glass shell 51 using hot melt adhesive or the like, so as to prevent the water in the inner cavity of the glass shell 51 from overflowing to the outside due to inertia during the movement of the glass shell 51. Moreover, the hot melt adhesive can be melted again after encountering high temperature, so it is also convenient to perform maintenance operations on the parts inside the glass shell 51 later.

[0067] Generally, the melting point of hot melt adhesive is 150℃, so during the water bath heating of asphalt, the temperature of asphalt is generally 60℃±0.1℃. The temperature difference between the two is large, so the temperature of 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 , Fig. 9 , Fig.10 , Fig.11 and Fig.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 an annular 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 mentioned above 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 on the upper part of the inner cavity of the glass shell 51 so that it will not slide 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 so that it will not move at will 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 part 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 plastics, and the Mohs hardness of the engineering plastics is less than the hardness of the glass shell 51, and the Mohs hardness of the engineering plastics is greater than the Mohs hardness of scale, so the cleaning ring 554 will not cause damage to the inner surface of the glass shell 51 during the implementation process;

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

[0073] For details, see Fig. 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, a top plate 562 is slidingly connected to the outer surfaces of the two guide rods 561, a top rod 565 is fixedly connected to the middle part of the lower end of the top plate 562, a bottom plate 564 sliding on the outer surface of the top rod 565 is fixedly connected to the lower ends of the two guide rods 561, and a spring 563 is fixedly connected to 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.

[0074] For details, see Fig. 9 In this embodiment, the central mechanism 556 includes an upper fixed plate 5561, 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 support 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 support rings 5562, a plurality of follow-up reset mechanisms 5565 are commonly fixed in a circular array on the inner surface of the lower ring sheet 555 and the inner surface of the cleaning ring 554, and each follow-up reset mechanism 5565 is installed below the L-shaped driving plate 5563 on the same side.

[0075] For details, see Fig. 9 In this embodiment, the follow-up reset mechanism 5565 includes a hook plate 5571 fixed to the inner surface of the lower ring piece 555 and a rocking plate 5572 that rotates on the inner surface of the cleaning ring 554, the hook plate 5571 is located between the rocking plate 5572 and the L-shaped driving plate 5563 on the same side, an elastic sheet 5573 is fixed between the side of the rocking plate 5572 away from the hook 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 plate 2 5576 is attached to the horizontal part of the triangular fixing block 5574, a lower pressure plate 1 5575 that is rotatably connected to the upper part of the inner surface of the cleaning ring 554 is fixed to the upper end of the hook 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 plate 2 5576 and the cleaning ring 554.

[0076] As can be seen from the above, after the glass shell 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 sequentially placed 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, and 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, and when the L-shaped driving plate 5563 contacts the follow-up reset mechanism 5565, it will drive the cleaning ring 554 to move synchronously, and the observation area on the upper part of the inner cavity of the glass shell 51 will be scraped and cleaned by the cleaning ring 554, and in this process, the plurality of springs 553 will be stretched to generate torque;

[0077] When the cleaning ring 554 gradually approaches the lower ring plate 555, refer to Fig.11 , the hook-shaped plate 1 5571 will contact with 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 fixed block 5574, under the drag of the spring 3 5577 and the pressure of the hook plate 2 5576, the lower pressing plate 1 5575 rotates clockwise, and the L-shaped driving plate 5563 instantly moves to the bottom of 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 drag of spring 1 553, the cleaning ring 554 moves upward to the upper part of the inner cavity of the glass housing 51 to the initial position;

[0080] When the cleaning ring 554 gradually moves to the initial position, the triangular fixed block 5574 and the lower pressure plate 1 5575 are in a separated state. When 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 by the L-shaped lower pressure plate 552 to move away from the side of the L-shaped driving plate 5563. At the same time, the hook plate 2 5576 will squeeze the triangular fixed block 5574 to make it rotate again to squeeze the elastic sheet 5573. When the hook plate 2 5576 moves to the bottom of the triangular fixed block 5574 again, under the elastic force of the elastic sheet 5573, the triangular fixed 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 the upper fixing plate 5561, the supporting ring 5562 and the L-shaped driving plate 5563 will be lifted up and restored to the initial position. 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 up. 575 rotates counterclockwise again, and the lower pressure plate 1 5575 squeezes the triangular fixing block 5574 outward, and the hook plate 2 5576 and the triangular fixing block 5574 are separated. When the L-shaped driving plate 5563 moves to the upper part of the lower pressure plate 1 5575, under the drag of the spring 3 5577, the lower pressure plate 1 5575 rotates clockwise again, and the hook plate 2 5576 and the triangular fixing block 5574 fit together again and return to the initial state, and wait for the next time to continue to push the cleaning ring 554 to move through the L-shaped driving plate 5563 to clean the inner surface of the glass shell 51.

[0082] Embodiment 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, and the upper and lower parts of the two plastic shells 571 close to each other are respectively fixed with permanent magnets 572 and conductive sheets 573, and the upper end of one plastic shell 571 and the lower end of the other plastic shell 571 are connected to cables;

[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 implementation situation, and 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 closely attached, the two permanent magnets 572 are just close 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, rubber rings are installed on the upper part 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 upper 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 ceramics, silicon dioxide, 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 sleeved on the outer surface of the cable in this case, wherein 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 board 6. The elastic plastic rod can be deformed and bent, but its length will not change, so as 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 can be automatically connected together without the need for separate connection, thus saving time and effort.

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

[0095] Example 6: In order to improve the thermal efficiency, the asphalt particles are heated quickly. Fig.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 collector pipes 5581. The trumpet-shaped heat collector 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 collector pipes 5581.

[0096] In 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 above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached 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 portion of the rear end of the device body (1), a base (3) is slidably 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 portion 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).

2. The asphalt viscosity testing device according to claim 1, characterized in that: The test body (5) comprises a glass shell (51), a plurality of limit plates (52) matched with the placement grooves (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 arranged 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 the output end of the motor heat pipe (54) are provided with power connectors (57).

3. The asphalt viscosity testing device according to claim 2, characterized in that: The power connector (57) comprises two plastic shells (571), and permanent magnets (572) and conductive sheets (573) are respectively fixed to the upper and lower parts of the ends of the two plastic shells (571) close to each other, and cables are connected to the upper end of one of the plastic shells (571) and the lower end of the other plastic shell (571); The magnetic properties of two adjacent permanent magnets (572) are opposite.

4. The asphalt viscosity testing device according to claim 2, characterized in that: The cleaning mechanism (55) comprises 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 part of the glass shell (51); a plurality of L-shaped lower pressure plates (552) and springs (553) are fixedly connected in an annular array at the lower end of the upper ring piece (551); a cleaning ring (554) is fixedly connected to the lower ends of the plurality of springs (553); a central mechanism (556) is fixed to the upper part of the resetter (56); and a plurality of heat collectors (558) are arranged in an annular array outside the central mechanism (556).

5. The asphalt viscosity testing device according to claim 4, characterized in that: The central mechanism (556) comprises an upper fixed plate (5561), 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 the 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 commonly 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 driving plate (5563) on the same side.

6. The asphalt viscosity testing device according to claim 5, characterized in that: The follow-up reset mechanism (5565) comprises a hook 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 plate (5571) is located between the rocking plate (5572) and the L-shaped driving plate (5563) on the same side; an elastic sheet (5573) is fixed between the side of the rocking plate (5572) away from the hook 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), and 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 lower end of the lower pressure plate 1 (5575) away from the hook-shaped plate 2 (5576) and the cleaning ring (554).

7. The asphalt viscosity testing device according to claim 5, characterized in that: The resetter (56) comprises 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), a top plate (562) is slidably connected to the outer surfaces of the two guide rods (561), a top rod (565) is fixedly connected to the middle of the lower end of the top plate (562), a bottom plate (564) is fixedly connected to the outer surface of the top rod (565) at the lower ends of the two guide rods (561), and a spring four (563) is fixedly connected to the outer side of the upper end of the bottom plate (564) and the lower end of the top plate (562).

8. The asphalt viscosity testing device according to claim 4, 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).

9. The asphalt viscosity testing device according to claim 5, 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 cavities 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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