Flash point detection equipment for asphalt and method thereof

Abstract

The flash point detection equipment comprises an operation table, a heating mechanism is mounted at the top of the operation table, a detection cup is placed in the heating mechanism, a mounting cavity is formed in one side of the interior of the operation table, a sweeping and sliding mechanism is mounted in the mounting cavity, a clamping assembly is mounted at the power output end of the sweeping and sliding mechanism, and an ignition mechanism is mounted in the clamping assembly. Stand columns are installed at the four corners of the top of the operation table, a clamping assembly is installed on the stand column on one side, a thermometer is installed in the clamping assembly, a top plate is installed at the tops of the stand columns, a moving mechanism is installed at the bottom of the top plate, a high-temperature-resistant cover is connected to the power output end of the moving mechanism, and an air suction cover is installed on one side of the top of the high-temperature-resistant cover. The air suction cover is connected with a hose, the output end of the hose is connected with an air purification mechanism, the air purification mechanism is installed on the top of the top plate, an electric control module is installed in the operation table, the electric control module is connected with the heating mechanism, the sweeping and sliding mechanism, the moving mechanism and the air purification mechanism, and the electric control module is connected with a control screen.

Description

Technical Field

[0001] The present invention belongs to the technical field of asphalt detection, and particularly relates to a flash point detection device and method for asphalt. Background Art

[0002] Asphalt is a dark brown complex mixture composed of hydrocarbon compounds with different molecular weights and their non-metallic derivatives. It is a kind of highly viscous organic liquid, mostly existing in the form of liquid or semi-solid petroleum, with a black surface, soluble in carbon disulfide and carbon tetrachloride. Asphalt is a waterproof, moisture-proof and anti-corrosion organic cementing material, commonly used in industry and paving roads, etc. The flash point index of asphalt is used to determine the safe temperature limit when asphalt is heated and melted, ensuring the safe use of asphalt. The flash point of asphalt is an index to evaluate the construction safety of asphalt. The flash point refers to the lowest temperature at which the vapor volatilized from a flammable liquid forms a flammable mixture with air and can flash when encountering a fire source. At this temperature, combustion cannot continue. If the temperature continues to rise, it may cause the combustion of asphalt and lead to the occurrence of a fire. Therefore, detection equipment is needed to detect the flash point of asphalt. However, most of the igniters of the existing flash point detection equipment can only perform ignition detection at a fixed position and cannot rotate flexibly at various positions on the asphalt surface for detection, resulting in possible deviations in the detection results and unable to comprehensively and accurately reflect the overall flash point situation of asphalt. At the same time, the waste gas containing harmful substances generated during the detection process is directly discharged without treatment, posing a serious threat to the environment and the health of operators. Summary of the Invention

[0003] Aiming at the problems raised in the above background art, the purpose of the present invention is to provide a flash point detection device and method for asphalt.

[0004] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0005] A flash point detection device for asphalt, comprising an operating table. A heating mechanism is installed on the top of the operating table. A detection cup is placed inside the heating mechanism. An installation cavity is provided on one side inside the operating table. A sweeping and sliding mechanism is installed in the installation cavity. A clamping component is installed at the power output end of the sweeping and sliding mechanism. An ignition mechanism is installed inside the clamping component. Columns are installed at the four corners of the top of the operating table. A clamping component is installed on one of the columns. A thermometer is installed inside the clamping component. A top plate is installed at the top of the column. A moving mechanism is installed at the bottom of the top plate. The power output end of the moving mechanism is connected to a high-temperature resistant cover. An air suction cover is installed on one side of the top of the high-temperature resistant cover. The air suction cover is connected to a hose. The output end of the hose is connected to an air purification mechanism. The air purification mechanism is installed on the top of the top plate. An electric control module is installed inside the operating table. The electric control module is connected to the heating mechanism, the sweeping and sliding mechanism, the moving mechanism and the air purification mechanism. The electric control module is connected to an operation screen. The operation screen is installed on the surface of the operating table.

[0006] Further defined, the heating mechanism includes a heating base. A heating wire is installed at the inner bottom of the heating base. The heating wire is arranged in a spiral shape at the bottom of the heating base. Positioning grooves are provided on both sides of the top of the heating base. Such a structural design can achieve a uniform heating effect on the asphalt.

[0007] Further defined, the detection cup is installed inside the heating base. Positioning blocks matching the positioning grooves are installed on both sides of the top of the detection cup. A threaded hole is provided on one of the positioning blocks. The positioning block is threadedly connected with a threaded handle through the threaded hole. A handle placement groove is provided on the surface of the operating table. Such a structural design facilitates the positioning and placement of the detection cup for use.

[0008] Further defined, the sweeping and sliding mechanism includes a servo motor installed at the inner top of the installation cavity. The power output end of the servo motor is connected to a driving wheel. The driving wheel is connected to a transmission belt. The other side of the transmission belt is connected to a driven wheel. The driven wheel is connected to a lead screw. Bearings are installed on both sides of the lead screw. The bearings are installed in the installation cavity. The lead screw is connected to a nut moving seat. A tooth seat is installed on the outside of the nut moving seat. Sensor contact blocks are installed on both sides of the back of the tooth seat. Sensors are installed on both sides of the installation cavity where the sensor contact blocks are located. The sensors are connected to the servo motor. A gear is meshed and connected to the front of the tooth seat. The gear is connected to a rotating rod. A bearing seat is installed at the bottom of the rotating rod. The bearing seat is installed in the installation cavity. The top of the rotating rod penetrates through the operating table and extends to its upper side. The top of the rotating rod is connected to the clamping component. Such a structural design can drive the ignition mechanism to rotate flexibly at various positions on the asphalt surface for detection.

[0009] Further defined, the clamping assembly includes a clamping seat installed at the top of the rotating rod. A clamping groove is provided inside the clamping seat. A clamping block is slidably installed at the top of the clamping groove of the clamping seat. The top of the clamping seat is installed with a clamping frame arranged in a U-shaped structure. The clamping frame is slidably installed with a pull rod arranged in a T-shaped structure. The bottom of the pull rod is connected to the top of the clamping block. A spring is installed at the top of the clamping block, and the free end of the spring is installed at the inner top of the clamping frame. Such a structural design facilitates the adjustment and clamping of the ignition mechanism.

[0010] Further defined, the ignition mechanism includes a gas tank arranged on one side of the bottom of the operation table. A gas cylinder is installed inside the gas tank. The output end of the gas cylinder is connected with a regulating valve. The output end of the regulating valve is connected with a gas hose. The output end of the gas hose is connected with an igniter. The igniter is installed in the clamping groove. A flame nozzle is provided at the output end of the igniter, and the flame nozzle is arranged at the top of the detection cup. Such a structural design facilitates ignition detection.

[0011] Further defined, the clamping assembly includes a clamping seat slidably installed on the column. One side of the clamping seat is installed with a pressing bolt. A notch groove is provided on the other side of the clamping seat. Assembly positions are provided on both sides of the notch groove of the clamping seat. The thermometer is installed between the two assembly positions on both sides. The clamping seat is installed with dovetail bolts on both sides of the thermometer, and dovetail nuts are installed on the other sides of the dovetail bolts. Such a structural design facilitates the adjustment of the installation of the thermometer.

[0012] Further defined, the moving mechanism includes a cylinder installed at the bottom of the top plate. The power output end of the cylinder is connected with a push plate. The push plate is connected with a moving frame. Sliders are installed on both sides of the top of the moving frame. The sliders are connected with a guide rail frame, and the top of the guide rail frame is installed at the bottom of the top plate. An electric push rod is installed at the bottom of the moving frame. The power output end of the electric push rod is connected with a high-temperature resistant cover. A guide post is installed at the top of the high-temperature resistant cover. The guide post is slidably connected with a guide sleeve, and the guide sleeve is installed at the bottom of the moving frame. Such a structural design facilitates driving the high-temperature resistant cover to move for waste gas adsorption treatment.

[0013] Further defined, the air purification mechanism includes a treatment box installed on the top of the top plate. A negative pressure fan is installed at the input end of the treatment box. A water tank is installed on the top of the treatment box. A micro water pump is installed in the water tank. The output end of the micro water pump is connected to a distribution plate. The output end of the distribution plate is connected to a number of cooling pipes. The bottoms of the number of cooling pipes are connected to a confluence plate. The output end of the confluence plate is communicated with the water tank. Two groups of sealed inlay frames are installed on the left side of the cooling pipes in the treatment box. An adsorption plate and an activated carbon purification plate are installed in the sealed inlay frames. A mesh window is installed at the output end of the treatment box. Such a structural design purifies the waste gas generated during detection.

[0014] A detection method for a flash point detection device for asphalt, characterized in that it includes the following steps:

[0015] S1: Pour the asphalt to be subjected to flash point detection into the detection cup, and place the detection cup into the heating mechanism;

[0016] S2: Adjust the clamping assembly so that the clamping assembly drives the thermometer to insert into the asphalt to detect the temperature of the asphalt in real time, and adjust the position of the ignition mechanism on the asphalt through the clamping assembly;

[0017] S3: Control the heating mechanism to heat up the asphalt in the detection cup, and when it is heated to the expected flash point temperature, slow down the heating speed of the heating mechanism;

[0018] S4: Start the ignition mechanism and the sweeping mechanism. After the ignition mechanism is ignited, drive the clamping assembly through the sweeping mechanism. The clamping assembly drives the ignition mechanism to sweep on the surface of the asphalt, and observe whether there is a flash. When there is no flash, continuously heat up the asphalt in the detection cup through the heating mechanism. When a flash appears, record the temperature at which the flash appears;

[0019] S5: While S is working, the air purification mechanism is started, and the waste gas generated when the asphalt is detected is sucked into the air purification mechanism by the suction hood in the high-temperature resistant cover for purification treatment;

[0020] S6: After recording the temperature at which the flash appears, turn off the heating mechanism, and adjust the clamping assembly so that the clamping assembly drives the thermometer to remove from the detection cup. At the same time, start the moving mechanism so that the moving mechanism drives the high-temperature resistant cover to move to the heating mechanism and cover the detection cup with the high-temperature resistant cover. Then, the air purification mechanism adsorbs and purifies the tail gas generated after the asphalt detection and discharges it.

[0021] The beneficial effects of the present invention are as follows: By providing a sweeping and sliding mechanism and a clamping assembly, the sweeping and sliding mechanism can drive the clamping assembly, and the clamping assembly drives the ignition mechanism to flexibly rotate and detect at various positions on the asphalt surface, thereby improving the detection result and reducing the occurrence of deviation. Moreover, the clamping assembly adjusts the ignition mechanism, further increasing the moving range of the ignition mechanism on the asphalt surface and improving the detection effect. Meanwhile, during the detection process, the air purification mechanism can adsorb and treat the waste gas generated by the asphalt during detection and the tail gas generated after detection, preventing the untreated waste gas of harmful substances from being directly discharged, which poses a serious threat to the environment and the health of operators. By providing a clamping assembly, it is convenient for the installation, use, and removal of the thermometer, improving the use effect. The heating wire distributed in a spiral shape can evenly transfer heat to various parts in the detection cup, thereby enabling uniform heating treatment of the asphalt and avoiding the problem of inaccurate detection results caused by uneven local heating of the asphalt, greatly improving the accuracy of detection. Brief Description of the Drawings

[0022] The present invention can be further illustrated by the non-limiting embodiments given in the drawings;

[0023] Figure 1 It is an axonometric structure schematic diagram of a flash point detection device for asphalt according to an embodiment of the present invention;

[0024] Figure 2 It is a vertical sectional structure schematic diagram of a flash point detection device for asphalt according to an embodiment of the present invention;

[0025] Figure 3 It is a transverse sectional structure schematic diagram of the detection cup of a flash point detection device for asphalt according to an embodiment of the present invention;

[0026] Figure 4 It is a plane sectional structure schematic diagram of the sweeping and sliding mechanism of a flash point detection device for asphalt according to an embodiment of the present invention;

[0027] Figure 5 It is an axonometric structure schematic diagram of the sweeping and sliding mechanism of a flash point detection device for asphalt according to an embodiment of the present invention;

[0028] Figure 6 It is an axonometric structure schematic diagram of the clamping assembly of a flash point detection device for asphalt according to an embodiment of the present invention;

[0029] Figure 7 It is an enlarged structure schematic diagram at position A of a flash point detection device for asphalt according to an embodiment of the present invention;

[0030] Figure 8 It is an enlarged structure schematic diagram at position B of a flash point detection device for asphalt according to an embodiment of the present invention;

[0031] The main element symbols are explained as follows:

[0032] Operating table 1, heating mechanism 2, test cup 3, installation cavity 4, sweeping and sliding mechanism 5, clamping assembly 6, ignition mechanism 7, column 8, clamping assembly 9, thermometer 10, top plate 11, moving mechanism 12, high-temperature resistant cover 13, suction hood 14, hose 15, air purification mechanism 16, electronic control module 17, control panel 18, heating base 19, heating wire 20, positioning groove 21, positioning block 22, threaded handle 23, handle placement groove 24, servo motor 25, driving wheel 26, transmission belt 27, driven wheel 28, lead screw 29, bearing 30, nut moving seat 31, tooth seat 32, inductor contact block 33, inductor 34, gear 35, rotating rod 36, bearing seat 37, clamping seat 38, clamping groove 39, clamping block 40, clamping frame 41, pull rod 42, spring 43, gas tank 44, gas cylinder 45, regulating valve 46, gas hose 47, igniter 48, flame nozzle 49, clamping seat 50, extrusion bolt 51, notch groove 52, assembly position 53, dovetail bolt 54, dovetail nut 55, cylinder 56, push plate 57, moving frame 58, slider 59, guide rail frame 60, electric push rod 61, guide post 62, guide sleeve 63, treatment box 64, negative pressure fan 65, water tank 66, micro water pump 67, distribution plate 68, cooling pipe 69, confluence plate 70, sealing inlay frame 71, adsorption plate 72, activated carbon purification plate 73, mesh window 74. Specific implementation mode

[0033] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below with reference to the drawings and embodiments.

[0034] Embodiment 1, as Figure 1 and Figure 2 shown, a flash point detection device for asphalt, a heating mechanism 2 is installed on the top of the operating table 1, a test cup 3 is placed in the heating mechanism 2, an installation cavity 4 is arranged on one side inside the operating table 1, a sweeping and sliding mechanism 5 is installed in the installation cavity 4, a clamping assembly 6 is installed at the power output end of the sweeping and sliding mechanism 5, an ignition mechanism 7 is installed in the clamping assembly 6, columns 8 are installed at the four corners of the top of the operating table 1, a clamping assembly 9 is installed on one of the columns 8, a thermometer 10 is installed in the clamping assembly 9, a top plate 11 is installed at the top of the column 8, a moving mechanism 12 is installed at the bottom of the top plate 11, the power output end of the moving mechanism 12 is connected to a high-temperature resistant cover 13, a suction hood 14 is installed on one side of the top of the high-temperature resistant cover 13, the suction hood 14 is connected to a hose 15, the output end of the hose 15 is connected to an air purification mechanism 16, the air purification mechanism 16 is installed on the top of the top plate 11, an electronic control module 17 is installed inside the operating table 1, the electronic control module 17 is connected to the heating mechanism 2, the sweeping and sliding mechanism 5, the moving mechanism 12 and the air purification mechanism 16, and the electronic control module 17 is connected to a control panel 18, and the control panel 18 is installed on the surface of the operating table 1.

[0035] In this embodiment, when in use, first pour the asphalt to be subjected to flash point detection into the detection cup 3, and place the detection cup 3 into the heating mechanism 2. The heating mechanism 2 heats up the asphalt in the detection cup 3. At the same time, by adjusting the clamping assembly 9, the clamping assembly 9 drives the thermometer 10 to insert into the asphalt to detect the temperature of the asphalt in real time. When the heating mechanism 2 heats the asphalt to the expected flash point temperature, slow down the heating speed of the heating mechanism 2, and at the same time start the ignition mechanism 7 and the sweeping mechanism 5. After the ignition mechanism 7 is ignited, the sweeping mechanism 5 drives the ignition mechanism 7 to slide on the surface of the asphalt, and observe whether there is a flash. At this time, the air purification mechanism 16 is started, and the waste gas generated during the detection of the asphalt is sucked into the air purification mechanism 16 by the suction hood 14 in the high-temperature resistant cover 13 for purification treatment. At the same time, observe the surface of the asphalt. When there is no flash, continuously heat up the asphalt in the detection cup 3 by the heating mechanism 2. When a flash appears, record the temperature at which the flash appears, and turn off the heating mechanism 2. Then adjust the clamping assembly 9 to drive the thermometer 10 to remove from the detection cup 3. At the same time, start the moving mechanism 12 to drive the high-temperature resistant cover 13 to move to the heating mechanism 2 and cover the detection cup 3 with the high-temperature resistant cover 13. After that, the air purification mechanism 16 adsorbs and purifies the tail gas generated after the asphalt detection and then discharges it.

[0036] Embodiment 2, as Figure 2 and Figure 3 shown, this embodiment adds the following structure on the basis of Embodiment 1. The heating mechanism 2 includes a heating base 19. A heating wire 20 is installed at the inner bottom of the heating base 19. The heating wire 20 is arranged in a spiral shape at the bottom of the heating base 19. Positioning grooves 21 are provided on both sides of the top of the heating base 19.

[0037] In this embodiment, during the use process, the heat can be evenly transferred to each part in the detection cup 3 through the helically distributed heating wire 20, so as to uniformly heat the asphalt, avoiding the problem that the detection result is inaccurate due to uneven local heating of the asphalt, and greatly improving the accuracy of the detection.

[0038] Embodiment 3, as Figure 1 、 Figure 2 and Figure 3 shown, this embodiment adds the following structure on the basis of Embodiment 1. The detection cup 3 is installed in the heating base 19. Positioning blocks 22 matching the positioning grooves 21 are installed on both sides of the top of the detection cup 3. A threaded hole is provided on one of the positioning blocks 22. The positioning block 22 is threadedly connected with a threaded handle 23 through the threaded hole. A handle placement groove 24 is provided on the surface of the operation table 1.

[0039] In this embodiment, after the test cup 3 is placed into the heating base 19, the positioning blocks 22 on both sides of the test cup 3 are installed into the positioning grooves 21 at the top of the heating base 19, so that the test cup 3 is positioned and placed for use. Then, the threaded handle 23 is rotated, removed from the test cup 3, and placed into the handle placement groove 24 of the operation table 1. Placing the threaded handle 23 prevents it from getting too hot after heating and causing burns when picked up later. Also, after removing the threaded handle 23, it is convenient to subsequently adsorb and purify the exhaust gas generated after the test. After the test is completed, the threaded handle 23 in the hand placement groove 24 is taken out and rotated and installed into the threaded hole in the positioning block 22, and then the test cup 3 can be taken out of the heating base 19.

[0040] Embodiment 4, as Figure 3 , Figure 4 and Figure 5 shown, this embodiment adds the following structure on the basis of Embodiment 1. The sweeping and sliding mechanism 5 includes a servo motor 25 installed at the inner top of the installation cavity 4. The power output end of the servo motor 25 is connected to a driving wheel 26. The driving wheel 26 is connected to a transmission belt 27. The other side of the transmission belt 27 is connected to a driven wheel 28. The driven wheel 28 is connected to a lead screw 29. Bearings 30 are installed on both sides of the lead screw 29, and the bearings 30 are installed in the installation cavity 4. The lead screw 29 is connected to a nut moving seat 31. A tooth seat 32 is installed on the outside of the nut moving seat 31. Inductor contact blocks 33 are installed on both sides of the back of the tooth seat 32. Inductors 34 are installed on both sides of the installation cavity 4 where the inductor contact blocks 33 are located. The inductors 34 are connected to the servo motor 25. A gear 35 is meshed and connected to the front of the tooth seat 32. The gear 35 is connected to a rotating rod 36. A bearing seat 37 is installed at the bottom of the rotating rod 36, and the bearing seat 37 is installed in the installation cavity 4. The top of the rotating rod 36 penetrates through the operation table 1 and extends to its upper side. The top of the rotating rod 36 is connected to the clamping assembly 6.

[0041] In this embodiment, during use, by controlling the start of the servo motor 25, the servo motor 25 drives the driving wheel 26 to rotate. The driving wheel 26 drives the transmission belt 27, the transmission belt 27 drives the driven wheel 28, and the driven wheel 28 drives the lead screw 29 to rotate along the bearing 30. The lead screw 29 then drives the nut moving seat 31, and the nut moving seat 31 drives the tooth seat 32 to move horizontally. During the movement of the tooth seat 32, the engaged gear 35 will be driven to rotate. After the gear 35 rotates, it drives the rotating rod 36 to rotate along the bearing seat 37. Furthermore, the rotating rod 36 drives the clamping assembly 6, and the clamping assembly 6 drives the ignition mechanism 7 to move and detect on the surface of the asphalt. During the movement of the tooth seat 32, the tooth seat 32 will synchronously drive the sensor contact blocks 33 on both sides of the back to move. When the sensor contact block 33 on the left side of the back contacts the left sensor 34, the left sensor 34 sends a signal to the servo motor 25 to make the servo motor 25 reverse. After the reverse movement, when the sensor contact block 33 on the right side contacts the right sensor 34, the right sensor 34 sends a signal to the servo motor 25 to make the servo motor 25 resume forward rotation. Thus, the rotating rod 36 can drive the ignition mechanism 7 to flexibly rotate and detect at various positions on the surface of the asphalt.

[0042] Embodiment 5, as Figure 8 shown, on the basis of Embodiment 1, the following structure is added to this embodiment. The clamping assembly 6 includes a clamping seat 38 installed at the top of the rotating rod 36. A clamping groove 39 is provided in the clamping seat 38. A clamping block 40 is slidably installed at the top of the clamping groove 39 of the clamping seat 38. A clamping frame 41 arranged in a U-shaped structure is installed at the top of the clamping seat 38. A pull rod 42 arranged in a T-shaped structure is slidably installed on the clamping frame 41. The bottom of the pull rod 42 is connected to the top of the clamping block 40. A spring 43 is installed at the top of the clamping block 40, and the free end of the spring 43 is installed at the inner top of the clamping frame 41.

[0043] In this embodiment, during the use process, when it is necessary to adjust the length position of the ignition mechanism 7, pull up the pull rod 42 to make the pull rod 42 slide upward along the clamping frame 41 and drive the clamping block 40 to move upward. During the upward movement of the clamping block 40, the spring 43 will be compressed. Then, the ignition mechanism 7 installed in the clamping groove 39 is slidably adjusted for subsequent flash point detection. After adjusting the ignition mechanism 7, release the pull rod 42. Under the action of the rebound force of the spring 43, the clamping block 40 is pushed to press the surface of the ignition mechanism 7, thereby clamping and fixing the ignition mechanism 7.

[0044] Embodiment 6, as Figure 1 、 Figure 2 and Figure 3As shown in the figure, the following structure is added to this embodiment on the basis of Embodiment 1. The ignition mechanism 7 includes a gas tank 44 arranged on one side of the bottom of the operating platform 1. A gas cylinder 45 is installed in the gas tank 44. The output end of the gas cylinder 45 is connected to a regulating valve 46. The output end of the regulating valve 46 is connected to a gas hose 47. The output end of the gas hose 47 is connected to an igniter 48. The igniter 48 is installed in the clamping groove 39. The output end of the igniter 48 is provided with a flame nozzle 49. The flame nozzle 49 is arranged on the top of the test cup 3.

[0045] In this embodiment, during use, the regulating valve 46 is adjusted to enable the gas cylinder 45 to output gas, and the gas is input into the igniter 48 through the gas hose 47, and finally ejected from the flame nozzle 49 and ignited, so as to facilitate the detection of the flash point after ignition.

[0046] Embodiment 7, as Figure 6 As shown in the figure, the following structure is added to this embodiment on the basis of Embodiment 1. The clamping assembly 9 includes a clamping seat 50 slidably installed on the column 8. One side of the clamping seat 50 is installed with a pressing bolt 51. The other side of the clamping seat 50 is provided with a notch groove 52. The clamping seat 50 is provided with assembly positions 53 on both sides of the notch groove 52. The thermometer 10 is installed between the two assembly positions 53. The clamping seat 50 is installed with dovetail bolts 54 on both sides of the thermometer 10. The other side of the dovetail bolts 54 is installed with dovetail nuts 55.

[0047] In this embodiment, by loosening or tightening the pressing bolt 51, the clamping seat 50 can move or be fixed along the column 8, so as to facilitate the adjustment of the use position of the clamping seat 50. After adjusting the position of the clamping seat 50, loosen the dovetail bolts 54 and the dovetail nuts 55 again, so that the thermometer 10 between the two assembly positions 53 can be adjusted up and down, so as to insert the thermometer 10 into the asphalt for temperature detection. After inserting the thermometer 10 into the asphalt, twist the dovetail bolts 54 and the dovetail nuts 55 again to lock, so that the assembly position 53 clamps and fixes the thermometer 10, ensuring that the thermometer 10 can be used stably.

[0048] Embodiment 8, as Figure 2 and Figure 3 As shown in the figure, the following structure is added to this embodiment on the basis of Embodiment 1. The moving mechanism 12 includes a cylinder 56 installed at the bottom of the top plate 11. The power output end of the cylinder 56 is connected to a push plate 57. The push plate 57 is connected to a moving frame 58. The top of the moving frame 58 is installed with sliders 59 on both sides. The sliders 59 are connected to a guide rail frame 60. The top of the guide rail frame 60 is installed at the bottom of the top plate 11. The bottom of the moving frame 58 is installed with an electric push rod 61. The power output end of the electric push rod 61 is connected to the high-temperature resistant cover 13. The top of the high-temperature resistant cover 13 is installed with a guide post 62. The guide post 62 is slidably connected to a guide sleeve 63. The guide sleeve 63 is installed at the bottom of the moving frame 58.

[0049] In this embodiment, during use, the push plate 57 is pushed by the air cylinder 56. The push plate 57 pushes the moving frame 58, and the moving frame 58 drives the slider 59 to move along the guide rail frame 60 for guiding movement. Furthermore, the moving frame 58 drives the electric push rod 61, and the electric push rod 61 drives the high-temperature resistant cover 13 to move to the top of the test cup 3. After that, the electric push rod 61 is started, so that the electric push rod 61 pushes the high-temperature resistant cover 13 to move downward. When the high-temperature resistant cover 13 moves downward, it synchronously drives the guide post 62 to move downward along the guide sleeve 63, ensuring that the high-temperature resistant cover 13 can move vertically, enabling the high-temperature resistant cover 13 to cover the outside of the test cup 3. Then, the exhaust gas generated by the asphalt is sucked through the suction hood 14.

[0050] Example 9, as Figure 7 shown, the following structure is added to this embodiment on the basis of Example 1. The air purification mechanism 16 includes a treatment box 64 installed on the top of the top plate 11. A negative pressure fan 65 is installed at the input end of the treatment box 64. A water tank 66 is installed on the top of the treatment box 64. A micro water pump 67 is installed in the water tank 66. The output end of the micro water pump 67 is connected to a distribution plate 68. The output end of the distribution plate 68 is connected to a number of cooling pipes 69. The bottoms of the number of cooling pipes 69 are connected to a confluence plate 70. The output end of the confluence plate 70 is connected and communicated with the water tank 66. Two groups of sealed inlay frames 71 are installed on the left side of the cooling pipes 69 in the treatment box 64. An adsorption plate 72 and an activated carbon purification plate 73 are installed in the sealed inlay frames 71. A mesh window 74 is installed at the output end of the treatment box 64.

[0051] In this embodiment, during the detection process, by starting the negative pressure fan 65, the negative pressure fan 65 generates a suction force, so that the exhaust gas generated during the detection of the asphalt is adsorbed by the suction hood 14 in the high-temperature resistant cover 13. And when the high-temperature resistant cover 13 covers the test cup 3 and sucks the exhaust gas generated by the asphalt, it is input into the treatment box 64 through the hose 15. At the same time, the micro water pump 67 is started, so that the micro water pump 67 pumps the water in the water tank 66 out to the distribution plate 68. After the water is distributed by the distribution plate 68, the water flows into the respective cooling pipes 69 respectively, and flows into the confluence plate 70 from the bottom of the cooling pipes 69, and then flows back to the water tank 66 through the output pipe on the confluence plate 70. When the exhaust gas passes through the cooling pipes 69, the exhaust gas is cooled by the cooling pipes 69. The cooled exhaust gas passes through the adsorption plate 23 and the activated carbon purification plate 24 in sequence. The adsorption plate 23 and the activated carbon purification plate 24 can adsorb the harmful substances in the exhaust gas, reduce the content of harmful substances, and finally be discharged from the mesh window 74.

[0052] A detection method for a flash point detection device for asphalt, characterized in that it includes the following steps:

[0053] S1: Pour the asphalt to be flash-point detected into the detection cup 3, and place the detection cup 3 into the heating mechanism 2;

[0054] S2: Adjust the clamping assembly 9 to drive the thermometer 10 to insert into the asphalt, detect the temperature of the asphalt in real time, and adjust the position of the ignition mechanism 7 on the asphalt through the clamping assembly 6;

[0055] S3: Control the heating mechanism 2 to heat up the asphalt in the detection cup 3, and when it is heated to the expected flash-point temperature, slow down the heating speed of the heating mechanism 2;

[0056] S4: Start the ignition mechanism 7 and the sweeping mechanism 5, after the ignition mechanism 7 is ignited, drive the clamping assembly 6 through the sweeping mechanism 5, the clamping assembly 6 drives the ignition mechanism 7 to sweep on the surface of the asphalt, and observe whether there is a flash. When there is no flash, continuously heat up the asphalt in the detection cup 3 through the heating mechanism 2. When a flash appears, record the temperature at which the flash appears;

[0057] S5: While the operation in S4 is in progress, start the air purification mechanism 16, and the waste gas generated during the detection of the asphalt is sucked into the air purification mechanism 16 by the suction hood 14 in the high-temperature resistant cover 13 for purification treatment;

[0058] S6: After recording the temperature at which the flash appears, turn off the heating mechanism 2, and adjust the clamping assembly 9 to drive the thermometer 10 to remove from the detection cup 3. At the same time, start the moving mechanism 12 to drive the high-temperature resistant cover 13 to move to the heating mechanism 2 and cover the detection cup 3 with the high-temperature resistant cover 13. Then, the air purification mechanism 16 adsorbs and purifies the tail gas generated after the asphalt detection and discharges it.

[0059] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A flash point detection device for asphalt, characterized in that: The operating table (1) comprises a heating mechanism (2) installed on the top of the operating table (1), a detection cup (3) being placed in the heating mechanism (2), a mounting cavity (4) being provided on one side of the interior of the operating table (1), a sweeping mechanism (5) being installed in the mounting cavity (4), a clamping assembly (6) being installed at the power output end of the sweeping mechanism (5), an ignition mechanism (7) being installed in the clamping assembly (6), columns (8) being installed at the four corners of the top of the operating table (1), a clamping assembly (9) being installed on one side of the columns (8), a thermometer (10) being installed in the clamping assembly (9), a top plate (11) being installed on the top of the column (8), a moving machine being installed at the bottom of the top plate (11), and a thermometer (10) being installed in the clamping assembly (9). The movable mechanism (12) is provided with a high temperature resistant cover (13) at its power output end, an air suction cover (14) is installed on one side of the top of the high temperature resistant cover (13), the air suction cover (14) is connected to a hose (15), the output end of the hose (15) is connected to an air purification mechanism (16), the air purification mechanism (16) is installed on the top of the top plate (11), an electric control module (17) is installed in the operating table (1), the electric control module (17) is connected to the heating mechanism (2), the sweeping mechanism (5), the movable mechanism (12) and the air purification mechanism (16), the electric control module (17) is connected to a control panel (18), and the control panel (18) is installed on the surface of the operating table (1).

2. A flash point detection device for asphalt according to claim 1, characterized in that: The heating mechanism (2) comprises a heating seat (19), a heating wire (20) is installed at the inner bottom of the heating seat (19), the heating wire (20) is arranged in a spiral shape at the bottom of the heating seat (19), and positioning grooves (21) are provided on both sides of the top of the heating seat (19).

3. A flash point detection device for asphalt according to claim 2, characterized in that: The detection cup (3) is installed in the heating seat (19), and positioning blocks (22) matching the positioning grooves (21) are installed on both sides of the top of the detection cup (3), one side of the positioning block (22) is provided with a threaded hole, and the positioning block (22) is threadedly connected to a threaded handle (23) through the threaded hole, and the surface of the operating table (1) is provided with a handle placement groove (24).

4. The flash point detection device for asphalt according to claim 3, characterized in that: The sweeping mechanism (5) comprises a servo motor (25) mounted on the top of the inner side of the mounting cavity (4), the power output end of the servo motor (25) is connected to a driving wheel (26), the driving wheel (26) is connected to a transmission belt (27), the other side of the transmission belt (27) is connected to a driven wheel (28), the driven wheel (28) is connected to a screw rod (29), bearings (30) are mounted on both sides of the screw rod (29), the bearings (30) are mounted in the mounting cavity (4), the screw rod (29) is connected to a nut moving seat (31), the outer side of the nut moving seat (31) is installed with a gear seat (32), the gear Sensor contacts (33) are installed on both sides of the back of the seat (32), and sensors (34) are installed on both sides of the sensor contacts (33) in the installation cavity (4). The sensor (34) is connected to the servo motor (25). The front of the gear seat (32) is meshingly connected with a gear (35), and the gear (35) is connected to a rotating rod (36). A bearing seat (37) is installed at the bottom of the rotating rod (36), and the bearing seat (37) is installed in the installation cavity (4). The top of the rotating rod (36) passes through the operating table (1) and extends to the upper side thereof. The top of the rotating rod (36) is connected to the clamping assembly (6).

5. The flash point detection device for asphalt according to claim 4, characterized in that: The clamping assembly (6) includes a clamping seat (38) installed on the top of the rotating rod (36), a clamping groove (39) is provided in the clamping seat (38), a clamping block (40) is slidably installed on the top of the clamping groove (39) of the clamping seat (38), a clamping frame (41) with a U-shaped structure is installed on the top of the clamping seat (38), a pull rod (42) with a T-shaped structure is slidably installed on the clamping frame (41), the bottom of the pull rod (42) is connected to the top of the clamping block (40), a spring (43) is installed on the top of the clamping block (40), and the free end of the spring (43) is installed on the inner top of the clamping frame (41).

6. The flash point detection device for asphalt according to claim 5, characterized in that: The ignition mechanism (7) comprises a gas box (44) arranged at one side of the bottom of the operating table (1), a gas tank (45) being installed in the gas box (44), an output end of the gas tank (45) being connected to a regulating valve (46), an output end of the regulating valve (46) being connected to a gas hose (47), an output end of the gas hose (47) being connected to an igniter (48), the igniter (48) being installed in a clamping groove (39), a flame nozzle (49) being provided at the output end of the igniter (48), and the flame nozzle (49) being arranged at the top of the detection cup (3).

7. The flash point detection device for asphalt according to claim 6, characterized in that: The clamping assembly (9) comprises a clamping seat (50) slidably mounted on a column (8); a squeeze bolt (51) is mounted on one side of the clamping seat (50); a notch groove (52) is provided on the other side of the clamping seat (50); the clamping seat (50) is provided with assembly positions (53) on both sides of the notch groove (52); the thermometer (10) is mounted between the assembly positions (53) on both sides; the clamping seat (50) is provided with dovetail bolts (54) on both sides of the thermometer (10); and a dovetail nut (55) is mounted on the other side of the dovetail bolt (54).

8. The flash point detection device for asphalt according to claim 7, characterized in that: The moving mechanism (12) comprises a cylinder (56) installed at the bottom of the top plate (11), the power output end of the cylinder (56) is connected to a push plate (57), the push plate (57) is connected to a moving frame (58), sliders (59) are installed on both sides of the top of the moving frame (58), the sliders (59) are connected to a guide rail frame (60), the top of the guide rail frame (60) is installed at the bottom of the top plate (11), an electric push rod (61) is installed at the bottom of the moving frame (58), the power output end of the electric push rod (61) is connected to a high temperature resistant cover (13), the top of the high temperature resistant cover (13) is installed with a guide column (62), the guide column (62) is slidably connected to a guide sleeve (63), and the guide sleeve (63) is installed at the bottom of the moving frame (58).

9. The flash point detection device for asphalt according to claim 8, characterized in that: The air purification mechanism (16) comprises a treatment box (64) installed on the top of the top plate (11), a negative pressure fan (65) is installed at the input end of the treatment box (64), a water tank (66) is installed on the top of the treatment box (64), a micro water pump (67) is installed in the water tank (66), the output end of the micro water pump (67) is connected to a distribution plate (68), the output end of the distribution plate (68) is connected to a plurality of cooling tubes (69), the bottom of the plurality of cooling tubes (69) is connected to a confluence plate (70), the output end of the confluence plate (70) is connected to the water tank (66), the treatment box (64) is installed with two sets of sealing mosaic frames (71) on the left side of the cooling tube (69), an adsorption plate (72) and an activated carbon purification plate (73) are installed in the sealing mosaic frame (71), and a mesh window (74) is installed at the output end of the treatment box (64).

10. A detection method based on the flash point detection equipment for asphalt according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Pour the asphalt to be tested for flash point into the test cup, and place the test cup into the heating mechanism; S2: adjusting the clamping assembly so that the clamping assembly drives the thermometer to be inserted into the asphalt, detecting the temperature of the asphalt in real time, and adjusting the position of the ignition mechanism on the asphalt through the clamping assembly; S3: Control the heating mechanism to heat the asphalt in the test cup, and when the temperature reaches the expected flash point temperature, slow down the heating speed of the heating mechanism; S4: Start the ignition mechanism and the sweeping mechanism, so that after the ignition mechanism is ignited, the ignition mechanism drives the clamping assembly through the sweeping mechanism, and the clamping assembly drives the ignition mechanism to sweep and slide on the surface of the asphalt, and observe whether there is a flash. When no flash appears, the asphalt in the test cup is continuously heated by the heating mechanism. When a flash appears, the temperature at which the flash appears is recorded; S5: The air purification mechanism starts while S is working, and the waste gas generated during the asphalt testing is sucked into the air purification mechanism by the air suction hood in the high temperature resistant hood for purification; S6: After recording the temperature at which the flash appears, turn off the heating mechanism, and adjust the clamping assembly so that the clamping assembly drives the thermometer to remove the test cup. At the same time, start the moving mechanism so that the moving mechanism drives the high-temperature resistant cover to move to the heating mechanism, and cover the test cup with the high-temperature resistant cover. After that, the air purification mechanism adsorbs and purifies the exhaust gas generated after the asphalt test and discharges it.

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