A processing device for modified bitumen

Abstract

The utility model discloses a kind of processing device of modified asphalt, it is related to asphalt processing equipment technical field.Processing device of modified asphalt includes main frame, feeding assembly, the front side of main frame, for carrying out feeding operation in each tank body in the process of asphalt processing, stirring assembly, in the mixing tank and development tank in main frame, for mixing asphalt in tank and its medium.The utility model under the synergic cooperation of combustion machine and flue, high-temperature flue gas generated by combustion machine flows in flue, heats asphalt in the mode of heat conduction and heat radiation, to meet process temperature requirement, establish multiple feeding assembly responsible for the supply of different materials, realize classified feeding, can avoid raw material mixing, accurately convey raw material to corresponding tank body, utilize scraper can scrape the material adhered to the inner wall of mixing tank, development tank, avoid coking to affect product quality, when arc-shaped stirring paddle rotates, can form up and down convection vortex, promote tank material mixing, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of asphalt processing equipment, specifically to a processing device for modified asphalt. Background Technology

[0002] Currently, asphalt pavement dominates highway construction in my country. However, with increasing traffic volume and load, early-stage problems such as rutting, embrittlement, and potholes in asphalt pavements are becoming increasingly serious. In recent years, the design of high-grade asphalt pavements has generally upgraded from the original design of modified surface layers and ordinary asphalt intermediate and base layers to a design of modified upper and intermediate surface layers and ordinary asphalt base layers.

[0003] Currently, most modified asphalt processing equipment uses fully manual or semi-automatic methods for process control, with materials being added intermittently by hand. This requires repeated shutdowns, adjustments, and manual intervention, resulting in poor production continuity and low efficiency of high-dosage modified asphalt, wasting manpower, and making it unsuitable for large-scale production and high-capacity requirements. Therefore, a modified asphalt processing device is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a processing apparatus for modified asphalt to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modified asphalt processing apparatus, comprising: a main frame,

[0006] The feeding assembly, located at the front of the main frame, is used to feed materials into the various tanks during the asphalt processing process.

[0007] The mixing assembly, located inside the mixing tank and development tank within the main frame, is used to mix the asphalt and its medium within the tank;

[0008] The main frame is equipped with a high-temperature tank, and a flue is provided inside the high-temperature tank. One end of the flue extends to the outside and is connected to the flue gas treatment equipment, and the other end extends to the outside and is connected to the burner.

[0009] The stirring assembly includes a scraper, which is located on the inner wall of the mixing tank and the development tank. An upper plate and a lower plate are respectively provided at the upper and lower ends of the scraper. A sleeve is provided on the inner side of the upper plate and the lower plate. The sleeve and the scraper are connected by a stirring paddle, and a stirring shaft is provided on the inner side of the sleeve.

[0010] Preferably, the feeding assembly includes auger blades, which are located inside the hollow column on the front side of the main frame. The auger blades are sleeved on the outer wall of the upright, and the bottom end of the upright extends into the base and is connected to the gear. A feeding hopper is provided on the front side of the hollow column, and a feeding pipe is provided on the rear side.

[0011] Preferably, the gears mesh with each other, and there are three sets of gears. The left gear has a rotating shaft inside, the middle gear has a round rod inside, and the right gear has a vertical rod inside. The gears are located inside the base.

[0012] Preferably, a monitoring room is located on the left side of the main frame, and a low-temperature tank and a high-temperature tank are located on the right side of the monitoring room. The low-temperature tank and the high-temperature tank are connected by a No. 1 pipe, and a flue is provided inside the high-temperature tank.

[0013] Preferably, the high-temperature tank is connected to the mixing tank via a second pipeline, and a flow meter and branch pipelines are installed on the second pipeline.

[0014] Preferably, the mixing tank is connected to the high-shear mill via pipeline No. 3, and the high-shear mill is connected to the development tank via pipeline No. 4. The pipeline transportation is controlled by an asphalt pump.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The modified asphalt processing device, with the coordinated operation of the burner and flue, uses high-temperature flue gas generated by the burner to heat the asphalt through heat conduction and radiation to meet the process temperature requirements. Multiple feeding components are set up to supply different materials, achieving classified feeding, which can avoid raw material mixing and accurately deliver the raw materials to the corresponding tanks. Scrapers can be used to scrape off the materials adhering to the inner walls of the mixing tank and the development tank to avoid coking and affecting product quality. When the arc-shaped stirring paddle rotates, it can form an upward and downward convection vortex to promote the mixing of materials in the tank, so that the asphalt is fully mixed with the SBS modifier and stabilizer, improving production efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional cross-sectional view of the present invention;

[0019] Figure 3 This is an internal front view of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal rear side right view of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal rear left view of this utility model;

[0022] Figure 6 This is an internal top view of the present invention;

[0023] Figure 7This is a schematic diagram of the internal cross-section of the present invention;

[0024] Figure 8 This is a cross-sectional schematic diagram of the feeding component of this utility model;

[0025] Figure 9 This is a schematic cross-sectional view of the base of this utility model;

[0026] Figure 10 This is a cross-sectional schematic diagram of the stirring assembly of this utility model;

[0027] Figure 11 This is a cross-sectional schematic diagram of the high-temperature tank of this utility model.

[0028] In the diagram: 1. Main frame; 2. Hollow column; 3. Feeding assembly; 301. Base; 302. Feeding hopper; 303. Discharge pipe; 304. Screwdriver blade; 305. Vertical pole; 306. Rotating shaft; 307. Round rod; 308. Gear; 4. Pipeline No. 2; 5. Monitoring room; 6. Pipeline No. 4; 7. Mixing assembly; 701. Mixing paddle; 702. Sleeve; 703. Lower plate; 704. Upper plate; 705. Scraper; 706. Mixing shaft; 9. Low-temperature tank; 10. Mixing tank; 11. Development tank; 12. High-shear mill; 13. Flow meter; 14. Branch pipe; 15. High-temperature tank; 16. Pipeline No. 3; 17. Asphalt pump; 18. Pipeline No. 1; 19. Flue; 20. Burner. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only for descriptive distinction and should not be construed as indicating or implying relative importance. All electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventionally known device such as a computer that provides control.

[0031] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] like Figures 1-11 As shown, this utility model provides a technical solution: a modified asphalt processing device, including a main frame 1, which is a stepped structure welded from steel profiles, and is generally rectangular. The bottom of the main frame is provided with support legs to maintain the stability of the main frame 1, thereby ensuring the stability of the equipment operation. The main frame 1 is divided into multiple functional areas for installing various processing tanks and supporting equipment. The feeding component 3 is located on the front side of the main frame 1 and is used to feed materials into each tank during the asphalt processing. The mixing component 7 is located in the mixing tank 10 and the development tank 11 inside the main frame 1 and is used to mix the asphalt and its medium in the tank.

[0033] like Figures 1-11As shown, a high-temperature tank 15 is installed inside the main frame 1 of this application. A flue 19 is installed inside the high-temperature tank 15. One end of the flue 19 extends to the outside and connects to the flue gas treatment equipment, and the other end extends to the outside and connects to the burner 20. Specifically, the high-temperature tank 15 is located inside the main frame 1 and has a double-layer jacket structure, that is, a heating layer is provided between the inner wall and the outer wall. One end of the flue 19 is connected to the burner 20, and the other end is connected to the flue gas (tail gas) treatment equipment. The flue gas treatment equipment is prior art and is not shown in the figure. The output end of the burner 20 is connected to the flue 19. The flue 19 enters the heating layer of the high-temperature tank 15 and is spirally wound into a heating coil. Finally, it exits from one side of its top. The heating layer is filled with a thermally conductive silicone layer to enhance heat transfer efficiency. The burner 20 uses the combustion fuel to generate high-temperature flue gas. The flue gas, as a heat source, directly enters the flue 19. At this time, the flue gas exists in the form of internal energy. When the flue gas flows within flue 19, the flow causes heat exchange between the high-temperature and low-temperature flue gas. The flue gas transfers heat to the wall of flue 19, while the high-temperature flue gas releases heat to the wall of flue 19 via thermal radiation (radiative heat transfer from a high-temperature object to a low-temperature object). Under the combined effect of these two processes, the temperature of the flue 19 wall rises rapidly. The heated flue 19 wall then transfers heat to the inner wall of the high-temperature tank 15. For the portion of the inner wall of the high-temperature tank 15 in direct contact with the asphalt, heat is transferred through molecular collisions between the inner wall and the asphalt, i.e., heat conduction, thus achieving heating. The asphalt in contact with the inner wall of the high-temperature tank 15 absorbs heat, its temperature rises, and its density decreases, causing it to flow upwards. Meanwhile, the low-temperature asphalt, which has not absorbed heat and has a higher density, flows downwards to replenish the asphalt, forming natural convection. This convection causes the asphalt within the tank to circulate continuously, diffusing the heat transferred from the inner wall of the high-temperature tank 15 to the entire asphalt system, achieving overall heating. The flue gas is ultimately treated and discharged in compliance with standards.

[0034] like Figures 1-11As shown in the embodiments of this application, the stirring assembly 7 includes a scraper 705, which is located on the inner wall of the mixing tank 10 and the development tank 11. An upper plate 704 and a lower plate 703 are respectively provided at the upper and lower ends of the scraper 705. A sleeve 702 is provided inside the upper plate 704 and the lower plate 703. The sleeve 702 and the scraper 705 are connected by a stirring paddle 701, and a stirring shaft 706 is provided inside the sleeve 702. Specifically, the stirring assembly 7 is located inside the mixing tank 10 and the development tank 11 to ensure uniform dispersion of materials. The scraper 705 is attached to the inner wall of the mixing tank 10 and the development tank 11. The scraper 705 is made of high-temperature resistant material, and the gap between it and the inner wall of the tank is less than 5mm, which can scrape off the asphalt mixture adhering to the tank wall. The upper and lower ends of the scraper 705 are respectively provided with an upper plate 704 and a lower plate 703. The cover plate is provided with an upper plate 704 and a lower plate 703, which are fixedly connected to the scraper 705 to enhance the overall rigidity of the cover plate. A sleeve 702 is fixedly installed on the inner side of the upper plate 704 and the lower plate 703. The sleeve 702 is fixedly sleeved on the outer wall of the stirring shaft 706. One end of the stirring shaft 706 passes through the upright and is connected to the motor. When the motor is started, the motor can drive the stirring shaft 706 to rotate. During the rotation of the stirring shaft 706, the sleeve 702 will be rotated synchronously. A stirring paddle 701 is arranged in an array between the sleeve 702 and the scraper 705. The stirring paddle 701 is set as an arc blade and forms a 45° angle with the horizontal plane. When the sleeve 702 drives the stirring paddle 701 to rotate, an upward and downward convection vortex can be formed to promote the circulation and mixing of materials in the tank.

[0035] like Figures 1-11 As shown in the embodiment of this application, the feeding assembly 3 includes an auger blade 304, which is located inside the hollow column 2 on the front side of the main frame 1. The auger blade 304 is sleeved on the outer wall of the upright 305, and the bottom end of the upright 305 extends into the base 301 and is connected to the gear 308. A feeding hopper 302 is provided on the front side of the hollow column 2, and a discharging pipe 303 is provided on its rear side. Specifically, the upright 305 is rotatably arranged inside the hollow column 2. The outer wall of 305 is fitted with auger blades 304, which are located inside the hollow column 2 and are used to convey materials. The bottom front end of the hollow column 2 is provided with a feeding hopper 302, which is funnel-shaped and has a matching top cover. The top cover is not shown in the figure. The feeding hopper 302 is used to hold materials. The discharge pipe 303 is located at the top rear end of the hollow column 2 and is connected to the feed port of the tank to realize the feeding operation.

[0036] like Figures 1-11As shown in the embodiment of this application, the gears 308 mesh with each other. There are three sets of gears 308: a rotating shaft 306 is provided inside the left gear 308; a round rod 307 is provided inside the middle gear 308; and a vertical rod 305 is provided inside the right gear 308. The gears 308 are located inside the base 301. Specifically, a base 301 is provided at the bottom of the hollow column 2, and the gears 308 are located inside the base 301. The bottom of the vertical rod 305 inside the hollow column 2 extends into the base 301 and is fixedly connected to the right gear 308. The middle gear 308 is rotatably connected to the round rod 307, which is fixedly installed inside the base 301. The left gear 308... Gear 308 is fixedly connected to shaft 306, shaft 306 is rotatably connected to base 301, and the top of shaft 306 is connected to motor. When the motor is started, the motor will drive shaft 306 to rotate, thereby driving gear 308 on the left to rotate. Under the action of gear 308 meshing, gear 308 on the right will drive upright 305 to rotate. During the rotation of upright 305, it will drive auger blade 304 to rotate, thereby pushing the material in hopper 302 upward and discharging it from discharge pipe 303 to target tank. In this application, multiple sets of feeding components 3 are provided, which are named No. 1 material, No. 2 material, No. 3 material, and No. 4 material from left to right.

[0037] like Figures 1-11As shown in the embodiment of this application, a monitoring room 5 is arranged on the left side of the main frame 1, and a low-temperature tank 9 and a high-temperature tank 15 are arranged on the right side of the monitoring room 5. The low-temperature tank 9 and the high-temperature tank 15 are connected by a first pipe 18. A flue 19 is arranged inside the high-temperature tank 15. The high-temperature tank 15 is connected to the mixing tank 10 by a second pipe 4. A flow meter 13 and a branch pipe 14 are arranged on the second pipe 4. The mixing tank 10 is connected to the high-shear mill 12 by a third pipe 16. The high-shear mill 12 is connected to the development tank 11 by a fourth pipe 6. The pipeline transportation is controlled by an asphalt pump 17. Specifically, the monitoring room 5 is used to monitor and control the asphalt processing progress. It uses a PLC as the control core and is equipped with a control system, which can be controlled by the operator. Throughout the production process, to improve production efficiency, during asphalt processing, the initial asphalt is fed into the low-temperature tank 9. The low-temperature asphalt in the low-temperature tank 9 is extracted by the asphalt pump 17 and flows through the first pipeline 18 to the high-temperature tank 15 for heating. In this application, the low-temperature tank 9 and the high-temperature tank 15 do not refer to the temperature of the tank body, but are just names for the tank body. The low-temperature asphalt in the high-temperature pump is heated into high-temperature asphalt by the combined action of the burner 20 and the flue 19. The high-temperature asphalt flows in the second pipeline 4 under the action of the asphalt pump 17 and enters the mixing tank 10. A flow meter 13 is installed on the second pipeline 4 to monitor the asphalt flow rate in real time. In this application, two sets of mixing tanks 10 are set up, with the mixing tank 10 and the high-temperature tank 15 located on the right side. The mixing tank 10 on the left side is directly connected to the No. 2 pipe 4 via a branch pipe 14. A valve is installed on the No. 2 pipe 4 to the right of the branch pipe 14 to control whether the high-temperature asphalt ultimately enters both sets of mixing tanks 10 or only enters the left mixing tank 10 via the branch pipe 14. After entering the mixing tank 10, the high-temperature asphalt maintains a certain liquid level and exists as base asphalt within the mixing tank 10. The inlet of the mixing tank 10 is connected to the No. 2 and No. 3 materials respectively. The No. 2 and No. 3 materials add SBS modifier to the mixing tank 10. Using the stirring component 7, the SBS modifier and base asphalt in the mixing tank 10 are mixed and blended to form a blend. The blend is then pumped by the asphalt pump 17. Under the action of the material, it enters the No. 3 pipe 16 and flows to the high-shear mill 12. The high-shear mill 12 is used to shear and grind the blended material. The high-shear mill 12 is existing technology, and its working principle will not be described in detail. The ground material enters the development tank 11 through the No. 4 pipe 6. The feed inlet of the development tank 11 is connected to the No. 4 material. After the material enters the development tank 11, a certain amount of stabilizer is added using the No. 4 material, and the mixture is stirred by the stirring component 7. After development is completed and the sample is tested and found to be qualified, it can be put into use. In this application, the connection points between the beginning and end of each pipe and the tank are distributed according to the specific processing operation. The location of the pipe and tank connection points in this application is for ease of description, and each pipe is equipped with a corresponding asphalt pump 17.To facilitate the transportation of asphalt.

[0038] The working principle of this utility model is as follows:

[0039] Based on the coordinated operation of the entire modified asphalt processing process, continuous production is achieved through the organic coordination of stages such as feeding, heating, mixing, grinding, and development. The specific process is as follows:

[0040] S1: The feeding assembly 3 drives the upright 305 to rotate via the gear 308. The upright 305 drives the auger blades 304 inside the hollow column 2 to rotate, pushing the raw materials (such as base asphalt, SBS modifier, and stabilizer) in the feeding hopper 302 along the hollow column 2 and accurately conveying them to the corresponding tanks (low temperature tank 9, mixing tank 10, and development tank 11) through the discharge pipe 303. Multiple feeding assemblies 3 are responsible for supplying different materials to ensure that raw materials are added as needed.

[0041] S2: The low-temperature asphalt in the low-temperature tank 9 is transported to the high-temperature tank 15 through the asphalt pump 17 and the No. 1 pipeline 18. After the burner 20 is started, high-temperature flue gas is generated. The flue gas flows along the flue 19 inside the high-temperature tank 15. Through heat conduction and heat radiation, the heat is transferred to the asphalt in the high-temperature tank 15, raising its temperature to the required process temperature. The flue gas treatment equipment connected to the end of the flue 19 purifies the exhaust gas, achieving environmentally friendly emissions.

[0042] S3: The high-temperature asphalt in the high-temperature tank 15 enters the mixing tank 10 through the No. 2 pipe 4 (equipped with a flow meter 13 to monitor the flow rate). At the same time, the feeding component 3 adds SBS modifier to the mixing tank 10. The stirring component 7 in the mixing tank 10 is started. The stirring shaft 706 drives the sleeve 702, scraper 705 and stirring paddle 701 to rotate. The scraper 705 scrapes off the material attached to the tank wall to avoid coking. The arc-shaped stirring paddle 701 forms an upward and downward convection vortex, so that the asphalt and modifier are fully mixed and blended to form a preliminary blended material.

[0043] S4: The mixed material is transported to the high-shear mill 12 by the asphalt pump 17 through the No. 3 pipeline 16. The high-speed shearing action of the equipment is used to grind the initially blended material, laying the foundation for the subsequent development reaction.

[0044] S5: The ground material enters the development tank 11 through pipe 4 6. The feed component 3 adds stabilizer at the same time, and the stirring component 7 continuously stirs at low speed so that the material completes the development reaction and forms a modified asphalt with stable performance.

[0045] The entire process is monitored in real time by a PLC control system in monitoring room 5, which monitors parameters (temperature, flow rate, stirring rate, etc.) at each stage. Operators can adjust the process through the control panel to ensure that each batch of products meets quality standards. Finally, the finished product can be output after passing inspection.

[0046] In summary, this utility model discloses a modified asphalt processing device, including a main frame 1, a feeding component 3 located on the front side of the main frame 1 for feeding materials into various tanks during the asphalt processing, and a mixing component 7 located in the mixing tank 10 and the development tank 11 inside the main frame 1 for mixing the asphalt and its medium in the tanks. A high-temperature tank 15 is provided inside the main frame 1, and a flue 19 is provided inside the high-temperature tank 15. One end of the flue 19 extends to the outside and is connected to the flue gas treatment equipment, and the other end extends to the outside and is connected to the burner 20. In this invention, with the coordinated operation of the burner 20 and the flue 19, the high-temperature flue gas generated by the burner 20 flows within the flue 19, heating the asphalt through heat conduction and radiation to meet the process temperature requirements. Multiple sets of feeding components 3 are set up to supply different materials, achieving classified feeding, avoiding raw material mixing, and accurately conveying the raw materials to the corresponding tanks. The scraper 705 can scrape off the material adhering to the inner wall of the mixing tank 10 and the development tank 11 to avoid coking and affecting product quality. When the arc-shaped stirring paddle 701 rotates, it can form an upward and downward convection vortex to promote the mixing of materials in the tank, so that the asphalt is fully mixed with the SBS modifier and stabilizer, thereby improving production efficiency.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A processing apparatus for modified bitumen, comprising: The main frame is characterized by: The feeding assembly, located at the front of the main frame, is used to feed materials into the various tanks during the asphalt processing process. The mixing assembly, located inside the mixing tank and development tank within the main frame, is used to mix the asphalt and its medium within the tank; The main frame is equipped with a high-temperature tank, and a flue is provided inside the high-temperature tank. One end of the flue extends to the outside and is connected to the flue gas treatment equipment, and the other end extends to the outside and is connected to the burner. The stirring assembly includes a scraper, which is located on the inner wall of the mixing tank and the development tank. An upper plate and a lower plate are respectively provided at the upper and lower ends of the scraper. A sleeve is provided on the inner side of the upper plate and the lower plate. The sleeve and the scraper are connected by a stirring paddle, and a stirring shaft is provided on the inner side of the sleeve.

2. The apparatus for processing modified bitumen of claim 1, wherein: The feeding assembly includes auger blades, which are located inside the hollow column on the front side of the main frame. The auger blades are sleeved on the outer wall of the upright, and the bottom end of the upright extends into the base and is connected to the gear. A feeding hopper is provided on the front side of the hollow column, and a feeding pipe is provided on the rear side.

3. The apparatus for processing modified bitumen of claim 2, wherein: The gears mesh with each other, and there are three sets of gears. The gear on the left has a rotating shaft inside, the gear in the middle has a round rod inside, and the gear on the right has a vertical rod inside. The gears are located inside the base.

4. The apparatus for processing modified bitumen of claim 1, wherein: A monitoring room is located on the left side of the main frame, and a low-temperature tank and a high-temperature tank are located on the right side of the monitoring room. The low-temperature tank and the high-temperature tank are connected by a No. 1 pipe, and a flue is installed inside the high-temperature tank.

5. The apparatus for processing modified bitumen of claim 4, wherein: The high-temperature tank is connected to the mixing tank via pipe number two, which is equipped with a flow meter and branch pipes.

6. The apparatus for processing modified bitumen of claim 5, wherein: The mixing tank is connected to the high-shear mill via pipeline No. 3, and the high-shear mill is connected to the development tank via pipeline No.

4. The pipeline transportation is controlled by an asphalt pump.

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