Safe sampling device in modified asphalt production

Abstract

The utility model relates to the technical field of modified asphalt production, in particular to a safe sampling device in modified asphalt production. The safe sampling device in modified asphalt production comprises a development tank, a tank body sampler is arranged on the vertical wall of the development tank, a discharge port of the development tank is connected with a circulating discharge pump through a pipeline, and the circulating discharge pump is connected with a feed port of the development tank through a pipeline. A sampling return pipeline is connected between the pipeline entering the circulating discharge pump and the pipeline exiting the circulating discharge pump, a discharge port is connected to the sampling return pipeline, and a filter A is connected to the tank body sampler. According to the device, the tank body sampler and the filter A are matched for use, steam heat tracing is additionally arranged on the outer side of the tank body sampler, the filter A performs filtering in a lower-in and upper-out manner, and then the tank body sampler and the filter A are purged through industrial wind, so that the sampling efficiency is greatly improved, and the stability of subsequent detection is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of modified asphalt production, and concretely relates to a safety sampling device in modified asphalt production. BACKGROUND

[0002] Modified asphalt is a material that adds a certain amount of modifier to base asphalt and changes the performance of asphalt through physical or chemical methods. The modifier mainly includes SBS (improving elasticity and toughness, commonly used in cold regions), EVA (enhancing adhesion and anti-aging, mainly used in waterproofing membranes), rubber powder (improving elasticity, fatigue resistance and wear resistance, suitable for heavy load roads) and the like. It is widely used in the fields of road engineering and waterproof engineering.

[0003] In the production process of modified asphalt, after shearing is completed, it is often necessary to develop a tank for development, and for the entire development process, continuous sampling for detection is required. When producing modified asphalt, the existing device has the problems that due to a large temperature difference between the inside and outside of the tank, the part of the sampler outside the tank is gelled, sampling is difficult, and the content of particulate impurities in the product is high, which affects subsequent detection; and for modified asphalt with a long storage time, the performance thereof needs to be detected before loading, and the existing device only samples on the pipe wall, which has the problems of uneven sampling and difference between the detection result and the actual performance. SUMMARY

[0004] In view of the above problems in the prior art, the utility model aims to provide a safety sampling device in modified asphalt production, which is characterized in that a steam tracing is additionally arranged outside the tank sampler, filter A is used in a "down-in and up-out" mode for filtration, and then the tank sampler and filter A are purged by industrial air, so that the sampling efficiency is greatly improved, and the stability of subsequent detection is improved; the sampling return pipeline, the discharge port and filter B are used in cooperation, the pressure difference between the inlet and outlet of the circulating discharge pump is utilized, sampling is performed at the sampling return pipeline, the uniformity of sampling is greatly improved, and the accuracy of the detection result is improved.

[0005] The utility model is implemented by adopting the following technical solutions:

[0006] The safety sampling device in modified asphalt production comprises a development tank, a tank sampler is arranged on the vertical wall of the development tank, a discharge port of the development tank is connected with a circulating discharge pump through a pipeline, the circulating discharge pump is connected with an inlet of the development tank through a pipeline, a sampling return pipeline is connected between the pipeline into the circulating discharge pump and the pipeline out of the circulating discharge pump, a discharge port is connected to the sampling return pipeline, and filter A is connected to the tank sampler.

[0007] All asphalt pipelines in the device are provided with heat conduction oil insulation.

[0008] The inside of the development tank is provided with a stirring paddle driven by a driving motor, and the outside of the stirring paddle is provided with a heating coil.

[0009] The sampling return pipeline is connected with the circulating discharge pump in parallel, the sampling return pipeline is provided with a control valve, and the discharge port is provided with a filter B.

[0010] The tank sampler is provided with a vertical sampling pipe and a horizontal sampling pipe, the vertical sampling pipe is located in the inside of the development tank, and the vertical sampling pipe is provided with an inlet.

[0011] The outside of the horizontal sampling pipe is provided with a sampling port insulation sleeve, the horizontal sampling pipe is provided with a sampling valve, and the horizontal sampling pipe is provided with a sampling port.

[0012] The sampling port insulation sleeve is connected with a steam inlet pipeline, the horizontal sampling pipe is connected with an industrial air blowing pipeline, and the sampling port insulation sleeve is connected with a steam exhaust pipeline below.

[0013] The inside of the filter A is provided with a filter plate, the vertical wall of the filter A is provided with a filter inlet and a filter outlet, the filter inlet is located below the filter plate, and the filter outlet is located above the filter plate.

[0014] The industrial air blowing pipeline is connected with the filter A, the connection is located above the filter plate, the filter plate is provided with an impurity outlet below, and the sampling port is connected with the filter inlet through a pipeline.

[0015] The working principle of the utility model is as follows:

[0016] After the sheared asphalt mixture in the colloid mill enters the development tank, the stirring paddle driven by the driving motor starts to work, the heating coil starts to work, after a development period, sampling is started, high-temperature and high-pressure steam is introduced into the sampling port insulation sleeve through the steam inlet pipeline to heat the tank sampler, then the sampling valve is opened, the modified asphalt enters the filter A through the sampling port to be filtered, sampling is completed, then the tank sampler and the filter A are reversely blown through the industrial air.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] The safety sampling device for modified asphalt production using this invention employs a tank sampler and filter A in combination. Steam tracing is added to the outside of the tank sampler, and filter A filters the material in a "bottom-in, top-out" manner. Industrial air is then used to purge the tank sampler and filter A, significantly improving sampling efficiency and the stability of subsequent testing. Furthermore, the combined use of the sampling return pipe, discharge port, and filter B, utilizing the pressure difference between the inlet and outlet of the circulating discharge pump, allows for sampling at the sampling return pipe, greatly enhancing sampling uniformity and improving the accuracy of test results. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the safety sampling device for modified asphalt production according to this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the sampler in the tank of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of filter A of this utility model;

[0022] In the diagram: 1. Development tank; 2. Agitator; 3. Drive motor; 4. Heating coil; 5. Tank sampler; 6. Filter A; 7. Circulating discharge pump; 8. Sampling return pipeline; 9. Discharge port; 10. Filter B; 11. Vertical sampling pipe; 12. Sampling valve; 13. Sampling port insulation sleeve; 14. Horizontal sampling pipe; 15. Steam inlet pipeline; 16. Industrial air purging pipeline; 17. Steam exhaust pipeline; 18. Sampling port; 19. Feed inlet; 20. Filter plate; 21. Filter feed inlet; 22. Filter discharge outlet; 23. Impurity outlet. Detailed Implementation

[0023] To make the objectives and technical solutions of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figure 1 As shown, the safety sampling device for modified asphalt production includes a development tank 1. A tank sampler 5 is installed on the vertical wall of the development tank 1. The outlet of the development tank 1 is connected to a circulating discharge pump 7 via a pipe. The circulating discharge pump 7 is connected to the inlet of the development tank 1 via a pipe. A sampling return pipe 8 is connected between the pipes inlet and outlet of the circulating discharge pump 7. An outlet 9 is connected to the sampling return pipe 8. A filter A6 is connected to the tank sampler 5. The circulating discharge pump 7 can be used for circulating the development tank and for discharging and loading materials.Figures 2-3 As shown, the inside of the development tank 1 is provided with a stirring paddle 2 driven by a driving motor 3, and the outside of the stirring paddle 2 is provided with a heating coil 4. A sampling return pipeline 8 is connected in parallel with a circulating discharge pump 7, and a control valve is arranged on the sampling return pipeline 8, and a filter B 10 is arranged on a discharge port 9. A vertical sampling pipe 11 and a horizontal sampling pipe 14 are arranged on a tank sampler 5, the vertical sampling pipe 11 is located in the inside of the development tank 1, and a feeding port 19 is arranged on the vertical sampling pipe 11. The outside of the horizontal sampling pipe 14 is provided with a sampling port heat preservation sleeve 13, a sampling valve 12 is arranged on the horizontal sampling pipe 14, and a sampling port 18 is arranged on the horizontal sampling pipe 14. The sampling port heat preservation sleeve 13 is connected with a steam inlet pipeline 15, the horizontal sampling pipe 14 is connected with an industrial air purge pipeline 16, and the sampling port heat preservation sleeve 13 is connected with a steam exhaust pipeline 17 below. The inside of the filter A 6 is provided with a filter plate 20, and a filter feeding port 21 and a filter discharge port 22 are arranged on the vertical wall of the filter A 6, the filter feeding port 21 is located below the filter plate 20, and the filter discharge port 22 is located above the filter plate 20. The industrial air purge pipeline 16 is connected with the filter A 6, and the connection is located above the filter plate 20, and an impurity outlet 23 is arranged below the filter plate 20, and the sampling port 18 is connected with the filter feeding port 21 through a pipeline.

[0026] The safety sampling device for modified asphalt production has the following steps during work:

[0027] (1) After the sheared asphalt mixture in the colloid mill enters the development tank 1, the stirring paddle 2 driven by the driving motor 3 starts to work, the heating coil 4 starts to work, and after a development period, sampling is started, high-temperature and high-pressure steam is introduced into the sampling port heat preservation sleeve 13 through the steam inlet pipeline 15 to heat the tank sampler 5, then the sampling valve 12 is opened, the modified asphalt enters the filter A 6 through the sampling port 18 for filtration, the sampling is completed, and then the tank sampler 5 and the filter A 6 are back purged by industrial air; (2) when the produced modified asphalt is stored for a long time, the circulating discharge pump 7 is started to circulate, and then the valve on the sampling return pipeline 8 is opened, and the modified asphalt is sampled through the filter B 10 and the discharge port 9.

Claims

1. A device for safely sampling a modified asphalt production, characterized in that, The development tank (1) is provided with a tank sampler (5) on the vertical wall, the discharge port of the development tank (1) is connected with the circulating discharge pump (7) through a pipeline, the circulating discharge pump (7) is connected with the feed inlet of the development tank (1) through a pipeline, a sampling return pipeline (8) is connected between the pipeline into the circulating discharge pump (7) and the pipeline out of the circulating discharge pump (7), the sampling return pipeline (8) is connected with a discharge port (9), and the tank sampler (5) is connected with a filter A (6).

2. The device for safe sampling of modified bitumen production according to claim 1, characterized in that, The inside of the development tank (1) is provided with a stirring paddle (2) driven by a driving motor (3), and the outside of the stirring paddle (2) is provided with a heating coil (4).

3. The device for safe sampling of modified bitumen production according to claim 1, characterized in that, The sampling return pipeline (8) is connected with the circulating discharge pump (7) in parallel, the sampling return pipeline (8) is provided with a control valve, and the discharge port (9) is provided with a filter B (10).

4. The device for safe sampling of modified bitumen production according to claim 1, characterized in that, The tank sampler (5) is provided with a vertical sampling pipe (11) and a horizontal sampling pipe (14), the vertical sampling pipe (11) is located in the inside of the development tank (1), and the vertical sampling pipe (11) is provided with a feed inlet (19).

5. The device for safe sampling of modified bitumen production according to claim 4, characterized in that, The horizontal sampling pipe (14) is provided with a sampling valve (12) and a sampling port (18).

6. The device for safe sampling of modified bitumen production according to claim 5, characterized in that, The sampling port heat preservation sleeve (13) is connected with a steam inlet pipeline (15), the horizontal sampling pipe (14) is connected with an industrial air purging pipeline (16), and the sampling port heat preservation sleeve (13) is connected with a steam discharge pipeline (17) below.

7. The device for safe sampling of modified bitumen production according to claim 6, characterized in that, The filter A (6) is provided with a filter inlet (21) and a filter outlet (22) on the vertical wall, the filter inlet (21) is located below the filter plate (20), and the filter outlet (22) is located above the filter plate (20).

8. The device for safe sampling of modified bitumen production according to claim 7, characterized in that, The industrial air purging pipeline (16) is connected with the filter A (6), the connection is located above the filter plate (20), the filter plate (20) is provided with an impurity outlet (23) below, and the sampling port (18) is connected with the filter inlet (21) through a pipeline.

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