Safe loading system for modified asphalt

Abstract

The utility model relates to the technical field of modified asphalt, in particular to a safe loading system for modified asphalt. The modified asphalt safe loading system comprises a finished product tank, the finished product tank is connected with a metal net filter through a discharging circulating pump, the metal net filter is connected with a vehicle-mounted oil storage tank through a fine-hole filter, a filter plate is arranged in the fine-hole filter, a rotary scraper is arranged below the filter plate, and an oil storage tank inlet is formed in the vehicle-mounted oil storage tank. According to the device, a two-stage filtering structure of the metal net filter and the fine hole filter is adopted, the inclined filtering net is arranged in the metal net filter, large-particle impurities can be preliminarily intercepted, and the large-particle impurity discharging opening facilitates impurity discharging; a filter plate and a rotary scraper are arranged in the fine-hole filter, and the rotary scraper can clean impurities on the filter plate in time and scrape the impurities to a fine-particle impurity discharge port to be discharged. Two-stage filtration has a synergistic effect, so that the problem of blockage caused by only one-time filtration is effectively avoided, and the loading efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of modified asphalt technology, specifically a modified asphalt safe loading system. Background Technology

[0002] Modified asphalt is a new type of asphalt material whose performance is significantly improved by adding modifiers such as SBS (styrene-butadiene-styrene block copolymer) and SBR (styrene-butadiene rubber) to ordinary asphalt. It exhibits better high and low temperature stability, aging resistance, and rutting resistance, and is widely used in road construction, waterproofing projects, and other fields.

[0003] Although modified asphalt undergoes a series of processing steps during production, the finished product inevitably still contains a significant amount of SBS or SBR particles. Currently, the filtration process before loading often employs a single-stage filtration method, which is highly prone to clogging. Once clogged, manual cleaning is required, a process that is not only tedious and time-consuming but also severely impacts loading efficiency and increases production costs.

[0004] Furthermore, during the loading of asphalt, the modified asphalt is heated to a high temperature, typically between 160-180℃, generating a large amount of asphalt fumes. These fumes contain various harmful substances, such as polycyclic aromatic hydrocarbons, which not only endanger the health of workers but also cause serious pollution to the surrounding environment, failing to meet environmental protection requirements and limiting the sustainable development of modified asphalt production enterprises. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a modified asphalt safety loading system. This system employs a two-stage filtration structure: a metal mesh filter and a fine-pore filter. The metal mesh filter contains an inclined screen that initially intercepts larger particles, and the outlet for these larger particles facilitates their discharge. The fine-pore filter contains a filter plate and a rotating scraper. The rotating scraper promptly cleans impurities from the filter plate, scraping them towards the fine-particle outlet for discharge. This two-stage filtration works synergistically, effectively avoiding clogging issues caused by single-stage filtration, reducing the frequency of manual cleaning, and significantly improving loading efficiency.

[0006] This utility model is achieved using the following technical solution:

[0007] The modified asphalt safety loading system includes a finished product tank, which is connected to a metal mesh filter via a discharge circulation pump. The metal mesh filter is connected to an on-board oil storage tank via a fine pore filter. The fine pore filter has a filter plate inside and a rotating scraper below the filter plate. The on-board oil storage tank has an oil storage tank inlet.

[0008] The finished product tank is equipped with an agitator driven by a stirring motor inside, and an insulation sleeve is installed on the outside of the tank. The agitator ensures that the modified asphalt inside the tank is mixed evenly, preventing component sedimentation; the insulation sleeve maintains the temperature of the asphalt, ensuring its fluidity and facilitating subsequent transportation and filtration.

[0009] The discharge circulation pump is connected to the finished product tank through a circulation pipe, and the circulation pipe is connected to the metal mesh filter through the discharge pipe.

[0010] The circulation pipeline is connected to the inlet pipeline of the discharge circulation pump via a connecting pipeline, and a sampling port is connected to the connecting pipeline.

[0011] The metal mesh filter features an inclined filter screen, a backwashing pipe, and a large particle discharge port located near the discharge circulation pump. The inclined filter screen increases the filtration area, facilitating impurity interception and allowing impurities to slide down to the large particle discharge port for discharge. The backwashing pipe facilitates filter cleaning and extends its service life.

[0012] The fine-pore filter is provided with a fine particulate impurity outlet, which is located below the filter plate.

[0013] The fine-pore filter is connected to the inlet of the oil storage tank through the oil outlet. A smoke hood is provided on the outside of the oil outlet. The smoke hood is connected to the condenser through an induced draft fan. The condenser is connected to the adsorption tower.

[0014] The working principle of this utility model is as follows:

[0015] Check that all connections are tight and leak-free. Pay particular attention to the pipe connections between the finished product tank, metal mesh filter, fine pore filter, and on-board oil storage tank, as well as the connections of the discharge circulation pump and induced draft fan. Start the mixing motor to agitate the modified asphalt in the finished product tank, and simultaneously open the insulation jacket to maintain the modified asphalt temperature at 160-180℃ to ensure its fluidity. Check that the filter screens and plates in the metal mesh filter and fine pore filter are clean; pre-clean if necessary.

[0016] Start the discharge circulation pump to transport the modified asphalt from the finished product tank to the metal mesh filter. During the transport process, control the flow rate of the discharge circulation pump to ensure that the modified asphalt enters the metal mesh filter at a flow rate of 0.5-1 cubic meters per minute. The modified asphalt undergoes preliminary filtration in the metal mesh filter; the inclined filter screen intercepts large particles of impurities, which are discharged through the large particle impurity outlet. At this time, the pressure inside the metal mesh filter should be maintained at 0.2-0.3 MPa to ensure filtration efficiency and smooth asphalt passage. The asphalt after filtration by the metal mesh filter enters the fine pore filter. Inside the fine pore filter, the filter plates further filter fine particles of impurities, and a rotating scraper continuously scrapes impurities from the filter plates to the fine particle impurity outlet for discharge. The pressure inside the fine pore filter is controlled at 0.1-0.2 MPa to prevent excessive pressure from damaging the filter plates. The filtered modified asphalt then enters the inlet of the vehicle-mounted oil storage tank through the oil outlet. At the oil outlet, the induced draft fan is turned on, drawing the generated asphalt fumes into the fume hood. The fumes are then cooled to 50-60°C by the condenser, causing most of the asphalt fumes to condense into liquid before entering the adsorption tower for further treatment. During loading, samples can be taken periodically through the sampling port on the connecting pipeline to test the quality of the modified asphalt and ensure that the loaded asphalt meets the standards.

[0017] After loading is completed, turn off the discharge circulation pump, mixing motor, induced draft fan, and other equipment. Backwash the metal mesh filter and fine pore filter. Pass clean water or a special cleaning agent into the filters through the backwash pipe to flush away any remaining impurities for future use. Clean the discharge ports for large and fine particles to ensure they are unobstructed.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] (1) This loading system adopts a two-stage filtration mode combining a metal mesh filter and a fine-pore filter. The inclined filter screen design inside the metal mesh filter expands the filtration area, effectively intercepting large particles of impurities, and the outlet for large particles facilitates timely discharge of impurities; the filter plate inside the fine-pore filter can further filter fine particles, and the rotating scraper below it continuously cleans the filter plate, scraping fine particles of impurities to the outlet for discharge. The two-stage filtration works in tandem, greatly reducing the occurrence of filter clogging, avoiding the tedious process of manual cleaning due to filter clogging, significantly improving loading efficiency, reducing labor costs, and ensuring the efficient and continuous operation of modified asphalt loading.

[0020] (2) The backwashing pipe installed on the metal mesh filter enables automatic backwashing. After loading is completed, clean water or special cleaning solution is introduced through the backwashing pipe to thoroughly rinse the metal mesh filter and completely remove the trapped impurities. This design completely eliminates the need for manual filter cleaning, saving manpower and avoiding the potential for incomplete cleaning by manual methods. It also extends the service life of the metal mesh filter and reduces the difficulty and frequency of equipment maintenance.

[0021] (3) A fume hood was installed outside the oil outlet of the fine-pore filter, forming a complete asphalt fume treatment system in conjunction with the induced draft fan, condenser, and adsorption tower. During loading, the induced draft fan rapidly draws the generated asphalt fumes into the fume hood, where they are then cooled in the condenser. Most of the asphalt fumes condense into a liquid state, while the remaining gaseous pollutants enter the adsorption tower and are effectively adsorbed by the adsorbent inside. This system significantly reduces the emission of harmful substances in asphalt fumes, substantially improves the working environment, protects the health of workers, and ensures that the company's production process meets environmental protection requirements, thus promoting the company's sustainable development. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the modified asphalt safety loading system of this utility model;

[0023] In the diagram: 1. Finished product tank; 2. Metal mesh filter; 3. Fine pore filter; 4. Vehicle-mounted oil storage tank; 5. Oil outlet; 6. Exhaust fan; 7. Condenser; 8. Adsorption tower; 9. Agitator; 10. Agitator motor; 11. Insulation jacket; 12. Discharge circulation pump; 13. Filter screen; 14. Backwash pipe; 15. Large particle impurity discharge port; 16. Rotary scraper; 17. Fine particle impurity discharge port; 18. Oil storage tank inlet; 19. Fume hood; 20. Circulation pipe; 21. Discharge pipe; 22. Connecting pipe; 23. Sampling port. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figure 1As shown, the modified asphalt safety loading system includes a finished product tank 1. The finished product tank 1 is connected to a metal mesh filter 2 via a discharge circulation pump 12. The metal mesh filter 2 is connected to an on-board oil storage tank 4 via a fine-pore filter 3. The fine-pore filter 3 has a filter plate inside, and a rotating scraper 16 is located below the filter plate. The on-board oil storage tank 4 has an oil storage tank inlet 18. The finished product tank 1 has an agitator 9 driven by a stirring motor 10 inside, and an insulation sleeve 11 on the outside. The discharge circulation pump 12 is connected to the finished product tank 1 via a circulation pipe 20, and the circulation pipe 20 is connected to the metal mesh filter 2 via a discharge pipe 21. The circulation pipe 20 is connected to the inlet pipe of the discharge circulation pump 12 via a connecting pipe 22, and a sampling port 23 is connected to the connecting pipe 22. The metal mesh filter 2 has an inclined filter screen 13 inside, a backwash pipe 14 on the metal mesh filter 2, and a large particle impurity outlet 15 on the metal mesh filter 2, located on the side close to the discharge circulation pump 12. The fine-pore filter 3 is equipped with a fine particulate impurity outlet 17, located below the filter plate. The fine-pore filter 3 is connected to the oil storage tank inlet 18 via an oil outlet 5. A fume hood 19 is located outside the oil outlet 5, connected to a condenser 7 via an induced draft fan 6. The condenser 7 is connected to an adsorption tower 8. The fume hood 19 collects asphalt fumes, the induced draft fan 6 provides suction to draw the asphalt fumes into subsequent treatment devices; the condenser 7 cools the asphalt fumes, causing them to condense and reducing gaseous pollutants; the adsorption tower 8 adsorbs remaining harmful components, purifying the exhaust gas and reducing pollution.

[0027] The modified asphalt safety loading system described above, when in operation, includes the following steps:

[0028] (1) Start the stirring motor 10 to stir the modified asphalt in the finished product tank 1. At the same time, open the insulation jacket 11 to maintain the temperature of the modified asphalt at 160-180℃ to ensure the fluidity of the asphalt. Check whether the filter screens 13 and filter plates in the metal mesh filter 2 and fine pore filter 3 are clean. If necessary, perform pre-cleaning. (2) Start the discharge circulation pump 12 to transport the modified asphalt in the finished product tank 1 to the metal mesh filter 2. During the transportation process, control the flow rate of the discharge circulation pump 12 so that the modified asphalt enters the metal mesh filter 2 at a flow rate of 0.5-1 cubic meters / minute. The modified asphalt undergoes preliminary filtration in the metal mesh filter 2. The inclined filter screen 13 intercepts large particles of impurities, which are discharged through the large particle impurity outlet 15. At this time, the pressure in the metal mesh filter 2 should be maintained at 0.2-0.3 MPa to ensure the filtration effect and the smooth passage of the asphalt. The asphalt filtered by the metal mesh filter 2 enters the fine pore filter 3. Inside the fine pore filter 3, the filter plate further filters out fine particulate impurities. The rotating scraper 16 rotates continuously, scraping the impurities on the filter plate to the fine particulate impurity outlet 17 for discharge. The pressure inside the fine pore filter 3 is controlled at 0.1-0.2 MPa to prevent excessive pressure from damaging the filter plate. (3) The filtered modified asphalt enters the oil tank inlet 18 of the vehicle-mounted oil tank 4 through the oil outlet 5. At the oil outlet 5, the induced draft fan 6 is turned on, drawing the generated asphalt fumes into the fume hood 19. The condenser 7 cools the asphalt fumes to 50-60℃, causing most of the asphalt fumes to condense into liquid, and then enters the adsorption tower 8 for adsorption treatment. During the loading process, samples can be taken periodically through the sampling port 23 on the connecting pipe 22 to test the quality of the modified asphalt and ensure that the loaded asphalt meets the standards.

Claims

1. A modified asphalt safety loading system, characterized in that, It includes a finished product tank (1), which is connected to a metal mesh filter (2) via a discharge circulation pump (12). The metal mesh filter (2) is connected to an on-board oil storage tank (4) via a fine pore filter (3). The fine pore filter (3) has a filter plate inside, and a rotating scraper (16) is provided below the filter plate. The on-board oil storage tank (4) has an oil storage tank inlet (18).

2. The modified asphalt safe loading system according to claim 1, characterized in that, The finished product tank (1) is equipped with a stirring paddle (9) driven by a stirring motor (10) inside, and an insulation sleeve (11) is provided on the outside of the finished product tank (1).

3. The modified asphalt safe loading system according to claim 1, characterized in that, The discharge circulation pump (12) is connected to the finished product tank (1) through the circulation pipe (20), and the circulation pipe (20) is connected to the metal mesh filter (2) through the discharge pipe (21).

4. The modified asphalt safe loading system according to claim 3, characterized in that, The circulation pipe (20) is connected to the inlet pipe of the discharge circulation pump (12) via a connecting pipe (22), and a sampling port (23) is connected to the connecting pipe (22).

5. The modified asphalt safe loading system according to claim 1, characterized in that, The metal mesh filter (2) is provided with an inclined filter screen (13) inside, a backwash pipe (14) is provided on the metal mesh filter (2), and a large particle impurity outlet (15) is provided on the metal mesh filter (2), which is located on the side close to the discharge circulation pump (12).

6. The modified asphalt safe loading system according to claim 1, characterized in that, The fine pore filter (3) is provided with a fine particulate impurity outlet (17), which is located below the filter plate.

7. The modified asphalt safe loading system according to claim 1, characterized in that, The fine pore filter (3) is connected to the oil storage tank inlet (18) through the oil outlet (5). A smoke hood (19) is provided on the outside of the oil outlet (5). The smoke hood (19) is connected to the condenser (7) through the induced draft fan (6). The condenser (7) is connected to the adsorption tower (8).

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