A photocatalytic modifier asphalt mixture pavement laying equipment and method
By developing a photocatalytic modifier asphalt mixture paving equipment and method, the problem of air bubble generation in modified asphalt mixtures during the mixing process has been solved, achieving high-quality pavement paving and exhaust gas decomposition effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-23
- Publication Date
- 2026-03-10
AI Technical Summary
Existing modified asphalt mixtures are prone to generating air bubbles during the mixing and preparation process, which prevents the components from fully integrating and affects the quality of pavement laying.
The asphalt pavement equipment using photocatalytic modifiers includes a mixing tank, auxiliary material tank, extrusion mechanism, defoaming mechanism, and feeding mechanism. Through the cooperation of screw conveyor extrusion, heating wire defoaming, and mixing mechanism, the raw materials and solvents of photocatalytic modifiers are fully mixed, eliminating air bubbles and forming high-quality photocatalytic modifier mixtures.
It improves the paving quality of modified asphalt mixtures, enhances photocatalytic effects, reduces the generation of bubbles during the mixing process, and improves the road surface's ability to decompose vehicle exhaust.
Smart Images
Figure CN116334984B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of road construction, in particular to a photocatalytic modifier asphalt mixture pavement laying device and laying method. BACKGROUND
[0002] With the increase of road traffic volume, the increase of traffic load and the deterioration of climate environment, the requirements for pavement materials are getting higher and higher in highway construction, maintenance and repair and reconstruction projects, and ordinary pavement materials cannot meet the demand of the current traffic conditions. When using traditional modified asphalt mixture to lay pavement, the exhaust gas generated during the driving of the automobile is accumulated on the modified asphalt mixture pavement, which also causes air pollution of the pavement. The modified asphalt mixture has been widely used due to its excellent road performance. The traditional technical scheme of producing modified asphalt and then producing modified mixture is used to form modified asphalt mixture by mixing modified asphalt, mineral powder and a proper amount of modified mixture under appropriate conditions. The traditional technical scheme has some technical, environmental and economic bottlenecks and deficiencies, for example, the modified mixture is prone to produce bubbles in the mixing and preparation process, so that the components in the modified mixture cannot be fully mixed. SUMMARY
[0003] The technical problem to be solved by the present application is to solve the problem that the modified mixture cannot be fully mixed when laying pavement. The present application provides a photocatalytic modifier asphalt mixture pavement laying device and laying method to solve the above problem.
[0004] The technical scheme adopted by the present application to solve the technical problem is: a photocatalytic modifier asphalt mixture pavement laying device and laying method, which comprises a mixing box and an auxiliary material tank, the auxiliary material tank is fixed on the side of the mixing box, the mixing box contains photocatalytic modifier raw materials, a spraying head is also installed on the mixing box, the auxiliary material tank contains photocatalytic modifier solvent, and the photocatalytic modifier asphalt mixture pavement laying device and laying method further comprises an extrusion mechanism, a defoaming mechanism and a material adding mechanism, the extrusion mechanism comprises a spiral conveying rod and a conveying cylinder, the conveying cylinder is fixed in the mixing box, the spiral conveying rod is rotatably installed in the conveying cylinder, one end of the conveying cylinder is provided with a feeding port and the other end is provided with a discharging port, and the spiral conveying rod is driven to rotate by a motor; the defoaming mechanism comprises a heating wire and a guide plate, the heating wire is fixed at the bottom of the guide plate, a guide cavity is arranged in the guide plate, the guide cavity is communicated with the conveying cylinder through the discharging port, and a discharging head is arranged at the end of the guide plate; the material adding mechanism comprises a material pump, the material pump is fixed on the outer wall of the mixing box, and the material pump can convey the photocatalytic modifier solvent in the auxiliary material tank into the guide cavity.
[0005] Preferably, the material guide plate is an arc-shaped plate, the material guide plate is fixed on the conveying cylinder, and the heating wire is located between the material guide plate and the conveying cylinder and is attached to the surface of the conveying cylinder.
[0006] Preferably, the material discharging head comprises a cylinder, a guide rod, a rod seat, an annular material disc, a pressing plate and an impeller, the cylinder is communicated with the material guide cavity, the annular material disc is fixed at the top end of the cylinder and is coaxial with the cylinder, the rod seat is fixed at the center of the cylinder, the guide rod is slidingly installed on the rod seat, the pressing plate is fixed at the top end of the guide rod and is located above the annular material disc, and the impeller is rotationally arranged in the cylinder and is fixed coaxially with the guide rod.
[0007] Preferably, the material feeding mechanism further comprises a connecting pipe, a material conveying pipe and a material conveying head, two ends of the connecting pipe are respectively communicated with the auxiliary material tank and the material pump, two ends of the material conveying pipe are respectively communicated with the material pump and the material conveying head, and the material conveying head can be inserted on the material guide plate.
[0008] Preferably, the material guide plate is provided with a feeding opening communicated with the material guide cavity, a one-way sealing plate is installed at the feeding opening, the one-way sealing plate can be opened towards the material guide cavity, the material conveying head is provided with a spout, the material conveying head can be inserted and sealed with the feeding opening, and the spout can be inserted into the material guide cavity.
[0009] Preferably, a sealing strip is further included, and the sealing strip is used for sealing the gap between the material guide plate and the conveying cylinder.
[0010] Preferably, the feeding opening is directed towards the bottom of the mixing box, the top of the mixing box is provided with an equipment opening, the material conveying head can be put into the mixing box from the equipment opening, the bottom of the mixing box is inclined towards one side and is provided with a discharging opening, a conveying pump is connected to the discharging opening, and the outlet end of the conveying pump is connected to the spraying head.
[0011] Preferably, a stirring mechanism is further included, the stirring mechanism comprises a stirring box, a high-speed stirring head, a stirring rod and a stirring motor, the stirring box is communicated with the feeding opening, a material suction pipe is fixed on the side of the stirring box, the high-speed stirring head is rotationally installed in the material suction pipe, the stirring motor is fixed on the mixing box, and the output shaft of the stirring motor is coaxially connected with the high-speed stirring head through a shaft coupling.
[0012] A method for laying a photocatalytic modified asphalt mixture pavement, comprising the photocatalytic modified asphalt mixture pavement laying device described above, and further comprising the following steps:
[0013] S1, raw material preparation, the asphalt, aggregate, mineral powder and photocatalytic modifier raw materials are mixed at a mixing station to form a modified asphalt mixture, the mixed modified asphalt mixture is transported to the construction site, part of the photocatalytic modifier raw material is poured into the mixing box, and the photocatalytic modifier solvent is filled into the auxiliary tank;
[0014] S2, raw material compaction, the photocatalytic modifier raw material in the mixing box is sucked into the conveying cylinder through the spiral conveying rod and is extruded along the conveying cylinder to the guide plate, and the lumpy powder in the photocatalytic modifier raw material is crushed;
[0015] S3, auxiliary material addition, the photocatalytic modifier solvent in the auxiliary tank is conveyed into the guide cavity through the material pump;
[0016] S4, raw material defoaming, after the photocatalytic modifier raw material and the photocatalytic modifier solvent enter the guide plate, they spread along the inner surface of the guide cavity, the guide plate is heated by the heating wire, the small bubbles in the photocatalytic modifier raw material and the photocatalytic modifier solvent are heated and expanded, and the bubbles are broken after floating up;
[0017] S5, repeat S1-S4, so that the photocatalytic modifier raw material and the photocatalytic modifier solvent are fully mixed to form a photocatalytic modifier mixture, and the mixed photocatalytic modifier mixture flows into the mixing box from the guide cavity, and the photocatalytic modifier mixture is stirred at high speed in the mixing box;
[0018] S6, pavement laying, the modified asphalt mixture transported to the construction site is poured into the paving equipment for pavement laying, and after the pavement laying is completed, the photocatalytic modifier mixture in the auxiliary tank is uniformly sprayed onto the laid modified asphalt mixture pavement by the spraying head.
[0019] The beneficial effects of the present application are that, first, the photocatalytic modifier raw material and the photocatalytic modifier solvent are fully mixed by the cooperation of the extrusion mechanism and the defoaming mechanism, and the bubbles generated during stirring are reduced, and the paving quality of the modified asphalt mixture pavement is improved.
[0020] Secondly, when the photocatalytic modifier raw material is stirred, the photocatalytic modifier solvent is added to the photocatalytic modifier raw material through the feeding mechanism, so that the photocatalytic modifier raw material and the photocatalytic modifier solvent are fully mixed to form a photocatalytic modifier mixture, and after the modified asphalt mixture is laid, the photocatalytic modifier mixture is sprayed onto the modified asphalt mixture by the spraying head, so that the photocatalytic modifier is fully combined with the asphalt, the paving quality of the modified asphalt mixture is improved, and the photocatalytic effect of the photocatalytic modifier on automobile exhaust is improved. BRIEF DESCRIPTION OF DRAWINGS
[0021] The present application will be further described below in conjunction with the drawings and examples.
[0022] Figure 1 is a structural schematic view of an optimal embodiment of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0023] Figure 2 is a structural schematic view of an internal structure of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0024] Figure 3 is a structural schematic view of an extrusion mechanism of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0025] Figure 4 is a structural schematic view of a stirring mechanism of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0026] Figure 5 is a structural schematic view of a material adding mechanism of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0027] Figure 6 is a structural schematic view of a defoaming mechanism of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0028] Figure 7 is a structural schematic view of a material discharging head of a photocatalytic modifier asphalt mixture pavement paving device of the present application;
[0029] Figure 8 is a structural schematic view of a material conveying head of a photocatalytic modifier asphalt mixture pavement paving device of the present application.
[0030] The drawing label: 1, mixing box; 2, auxiliary material tank; 3, extrusion mechanism; 4, defoaming mechanism; 5, material adding mechanism; 6, spiral conveying rod; 7, conveying cylinder; 8, feeding port; 9, discharging port; 10, motor; 11, heating wire; 12, guide plate; 13, guide cavity; 14, discharging head; 15, material pump; 16, material cylinder; 17, guide rod; 18, rod seat; 19, annular material disc; 20, pressing plate; 21, impeller; 22, connecting pipe; 23, material conveying pipe; 24, material conveying head; 25, feeding port; 26, one-way sealing plate; 27, nozzle; 28, sealing strip; 29, equipment port; 30, conveying pump; 31, spraying head; 32, stirring box; 33, high-speed stirring head; 34, stirring rod; 35, stirring motor. DETAILED DESCRIPTION
[0031] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0032] As Figures 1 to 8 shown, the application provides an embodiment of photocatalytic modifier asphalt mixture pavement laying device and laying method, including mixing box 1 and auxiliary material tank 2, auxiliary material tank 2 is fixed on the side of mixing box 1, mixing box 1 is filled with photocatalytic modifier raw materials, the mixing box is also provided with spray head 31, auxiliary material tank 2 is filled with photocatalytic modifier solvent, further including extrusion mechanism 3, defoaming mechanism 4 and feeding mechanism 5, extrusion mechanism 3 includes screw conveying rod 6 and conveying cylinder 7, conveying cylinder 7 is fixed in mixing box 1, screw conveying rod 6 is rotatably installed in conveying cylinder 7, one end of conveying cylinder 7 is provided with feeding port 8, the other end is provided with discharging port 9, feeding port 8 faces the bottom of mixing box 1, screw conveying rod 6 is driven to rotate by motor 10.
[0033] When the photocatalytic modifier raw materials are stirred, the photocatalytic modifier raw materials at the bottom of the mixing box 1 are made to enter the conveying cylinder 7 by driving the screw conveying rod 6 to rotate by the motor 10, the photocatalytic modifier raw materials can be extruded in the conveying process, the agglomerated powder in the photocatalytic modifier raw materials is crushed, the photocatalytic modifier raw materials are fully dispersed, the raw materials are prevented from agglomerating, and the photocatalytic modifier raw materials after being crushed are discharged from the discharging port 9 of the conveying cylinder 7.
[0034] The defoaming mechanism 4 includes heating wire 11 and guide plate 12, the heating wire 11 is fixed at the bottom of the guide plate 12, the guide plate 12 is provided with guide cavity 13, the guide cavity 13 is communicated with the conveying cylinder 7 through the discharging port 9, the guide plate 12 is an arc plate, the guide plate 12 is fixed on the conveying cylinder 7, the heating wire 11 is located between the guide plate 12 and the conveying cylinder 7 and is attached to the surface of the conveying cylinder 7, the heating wire 11 can also preheat the photocatalytic modifier raw materials in the conveying cylinder 7 while heating the guide plate 12, so that part of the agglomerated photocatalytic modifier raw materials is more easily crushed by the screw conveying rod 6, and the flowability of the photocatalytic modifier raw materials is improved, so that the photocatalytic modifier raw materials are prevented from blocking the screw conveying rod 6, further including sealing strip 28, the sealing strip 28 is used for sealing the gap between the guide plate 12 and the conveying cylinder 7, that is, the heating wire 11 is sealed between the guide plate and the conveying cylinder 7 by the sealing strip 28, so that the photocatalytic modifier raw materials are prevented from directly contacting the heating wire 11, the service life of the heating wire 11 is improved, and the heating wire 11 heats the photocatalytic modifier raw materials through the guide plate and the conveying cylinder 7, so that the heat distribution is more uniform.
[0035] The working principle of the defoaming mechanism 4 is that when the extruded photocatalytic modifier raw material enters the guide plate 12, it can spread along the inner wall of the guide material cavity 13, thereby reducing the thickness of the photocatalytic modifier raw material, and the small bubbles in the photocatalytic modifier raw material are more easily floated to the surface of the photocatalytic modifier raw material. At this time, the guide plate 12 is heated by the heating wire 11, the temperature in the guide material cavity 13 is raised, and the small bubbles are broken after being heated and expanded, thereby eliminating the bubbles in the photocatalytic modifier raw material.
[0036] The end of the guide plate 12 is provided with a discharge head 14, the discharge head 14 includes a barrel 16, a guide rod 17, a rod seat 18, an annular material disc 19, a pressing plate 20 and an impeller 21, the barrel 16 communicates with the guide material cavity 13, the annular material disc 19 is fixed at the top end of the barrel 16 and coaxial with the barrel 16, the rod seat 18 is fixed at the center of the barrel 16, the guide rod 17 is slidingly installed on the rod seat 18, the pressing plate 20 is fixed at the top end of the guide rod 17 and located above the annular material disc 19, and the impeller 21 is rotationally arranged in the barrel 16 and coaxially fixed with the guide rod 17.
[0037] The working principle of the discharge head 14 is that when the photocatalytic modifier raw material flows out of the guide material cavity 13, it will first flow through the barrel 16, and then the photocatalytic modifier raw material will lift the pressing plate 20 on the annular material disc 19, and the photocatalytic modifier raw material will flow out from the gap between the annular material disc 19 and the pressing plate 20, so that the thickness of the photocatalytic modifier raw material on the annular material disc 19 is further reduced. At the same time, the photocatalytic modifier raw material pushes the impeller 21 to rotate slowly during movement, so that the impeller 21 drives the guide rod 17 and the pressing plate 20 to rotate, while the annular material disc 19 remains stationary. Then, through the rotation of the pressing plate 20, the photocatalytic modifier raw material on the surface of the annular material disc 19 is pulled, the residual bubbles on the surface of the photocatalytic modifier raw material are torn apart when the photocatalytic modifier raw material flows out, and the residual bubbles in the photocatalytic modifier raw material are eliminated.
[0038] The feeding mechanism 5 includes a pump 15, a connecting pipe 22, a feeding pipe 23 and a feeding head 24, the pump 15 is fixed on the outer wall of the mixing box 1, the two ends of the connecting pipe 22 are respectively connected with the auxiliary material tank 2 and the pump 15, the two ends of the feeding pipe 23 are respectively connected with the pump 15 and the feeding head 24, the guide plate 12 is provided with a feeding port 25 communicating with the guide material cavity 13, a one-way sealing plate 26 is installed at the feeding port 25, the one-way sealing plate 26 can be opened towards the guide material cavity 13 to prevent the photocatalytic modifier raw material in the guide plate 12 from flowing out of the feeding port 25, the feeding head 24 has a spray port 27, the feeding head 24 can be inserted and sealed with the feeding port 25, the spray port 27 can extend into the guide material cavity 13, and the photocatalytic modifier solvent delivered by the pump 15 is uniformly sprayed into the guide material cavity 13 through the spray port 27.
[0039] The top of the mixing box 1 is provided with a device opening 29, and the feeding head 24 can be placed into the mixing box 1 from the device opening 29. The photocatalytic modifier raw material and the photocatalytic modifier solvent in the mixing box 1 are mixed to form a photocatalytic modifier mixture. The mixing box 1 is also provided with a stirring mechanism, which includes a stirring box 32, a high-speed stirring head 33, a stirring rod 34, and a stirring motor 35. The stirring box 32 is connected to the feeding opening 8. The stirring box 32 is provided with a suction pipe fixed on the side surface. The high-speed stirring head 33 is rotatably installed in the suction pipe. The stirring motor 35 is fixed on the mixing box 1. The output shaft of the stirring motor 35 is coaxially connected to the high-speed stirring head 33 through a shaft coupling. The high-speed stirring head 33 is rotated by the motor 35 to stir and shear the photocatalytic modifier mixture in the stirring box 32. The photocatalytic modifier mixture is further stirred and sheared before entering the stirring box 32. The photocatalytic modifier mixture can meet the construction requirements. Then, the photocatalytic modifier mixture in the stirring box 32 is sucked into the conveying cylinder 7 through the feeding opening 8 for conveying.
[0040] The photocatalytic modifier mixture can flow into the mixing box 1 from the guide cavity 13. The feeding head 24 can be placed into or taken out of the mixing box 1 from the device opening 29. The bottom of the mixing box 1 is inclined to one side and is provided with a discharge opening. The discharge opening is connected to the conveying pump 30. The outlet end of the conveying pump 30 is connected to the spray head 31. The photocatalytic modifier mixture is discharged from the mixing box 1 through the spray head 31 to adjust the laying dose and thickness of the photocatalytic modifier mixture. The photocatalytic modifier mixture is sprayed on the modified asphalt pavement after laying to further fuse the photocatalytic modifier mixture with the asphalt on the surface layer of the modified asphalt pavement, thereby increasing the content of the photocatalytic modifier mixture on the surface layer of the laid pavement. When the car drives on the pavement containing the photocatalytic modifier mixture, the photocatalytic action of the photocatalytic modifier mixture accelerates the decomposition of automobile exhaust, thereby reducing the impact of automobile exhaust on the pavement environment. When the modified asphalt pavement is used for a period of time, the surface will be worn. At this time, the photocatalytic modifier mixture near the lower layer of the modified asphalt pavement is exposed and continues to accelerate the decomposition of automobile exhaust through photocatalytic action. The device can also be moved to the pavement as a whole by a trailer to spray another layer of photocatalytic modifier mixture on the surface layer of the pavement to maintain the decomposition effect of automobile exhaust on the pavement.
[0041] A photocatalytic modifier asphalt mixture pavement laying method includes the photocatalytic modifier asphalt mixture pavement laying device described above and the following steps.
[0042] S1, raw material preparation, the asphalt, aggregate, mineral powder and photocatalytic modifier raw materials are mixed at a mixing station to form a modified asphalt mixture, the mixed modified asphalt mixture is transported to the construction site, part of the photocatalytic modifier raw material is poured into the mixing box 1, and the photocatalytic modifier solvent is filled into the auxiliary tank 2;
[0043] S2, raw material compaction, the photocatalytic modifier raw material in the mixing box 1 is sucked into the conveying cylinder 7 through the spiral conveying rod 6 and is extruded along the conveying cylinder 7 to the guide plate 12, and the lumpy powder in the photocatalytic modifier raw material is crushed;
[0044] S3, auxiliary material addition, the photocatalytic modifier solvent in the auxiliary tank 2 is conveyed into the guide cavity 13 through the material pump 15;
[0045] S4, raw material defoaming, after the photocatalytic modifier raw material and the photocatalytic modifier solvent enter the guide plate 12, they spread along the inner surface of the guide cavity 13, the guide plate 12 is heated by the heating wire 11, the small bubbles in the photocatalytic modifier raw material and the photocatalytic modifier solvent are heated and expanded, and the bubbles are broken after floating up;
[0046] S5, repeating S1-S4, the photocatalytic modifier raw material is fully mixed with the photocatalytic modifier solvent to form a photocatalytic modifier mixture, the mixed photocatalytic modifier mixture flows into the mixing box 1 from the guide cavity 13, and the photocatalytic modifier mixture is high-speed stirred by the stirring mechanism in the mixing box 1, so that the photocatalytic modifier mixture can meet the use and construction requirements after being fully stirred and sheared;
[0047] S6, pavement laying, the modified asphalt mixture transported to the construction site is poured into the paving equipment for pavement laying, the paving equipment can use a paver for pavement paving, and after the paving is completed, a roller is used for rolling, and after the laying is completed, the photocatalytic modifier mixture in the auxiliary tank 2 is uniformly sprayed onto the laid modified asphalt mixture pavement by the spraying head 31.
[0048] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0049] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application.
Claims
1. A photocatalytic modified asphalt mixture pavement laying device, comprising a mixing box (1) and an auxiliary material tank (2), the auxiliary material tank (2) is fixed on the side of the mixing box (1), the mixing box (1) contains photocatalytic modifier raw materials, and a spraying head (31) is further installed on the mixing box (1), and the auxiliary material tank (2) contains a photocatalytic modifier solvent, characterized in that: It also includes extrusion mechanism (3), defoaming mechanism (4) and material adding mechanism (5), the extrusion mechanism (3) includes screw conveying rod (6) and conveying cylinder (7), the conveying cylinder (7) is fixed in the mixing box (1), the screw conveying rod (6) is rotatably installed in the conveying cylinder (7), one end of the conveying cylinder (7) has a feed inlet (8) and the other end has a discharge port (9), the screw conveying rod (6) is driven to rotate by motor (10); The defoaming mechanism (4) includes heating wire (11) and guide plate (12), the heating wire (11) is fixed at the bottom of the guide plate (12), the guide plate (12) is provided with a guide cavity (13), the guide cavity (13) is communicated with the conveying cylinder (7) through the discharge port (9), and the end of the guide plate (12) is provided with a discharge head (14); The material adding mechanism (5) includes a pump (15), the pump (15) is fixed on the outer wall of the mixing box (1), and the pump (15) can convey the photocatalytic modifier solvent in the auxiliary material tank (2) into the guide cavity (13); The discharge head (14) includes a cylinder (16), a guide rod (17), a rod seat (18), an annular material disc (19), a pressing plate (20) and an impeller (21), the cylinder (16) is communicated with the guide cavity (13), the annular material disc (19) is fixed at the top of the cylinder (16) and coaxial with the cylinder (16), the rod seat (18) is fixed at the center of the cylinder (16), the guide rod (17) is slidably installed on the rod seat (18), the pressing plate (20) is fixed at the top of the guide rod (17) and located above the annular material disc (19), and the impeller (21) is rotatably arranged in the cylinder (16) and fixed coaxially with the guide rod (17); The guide plate (12) is provided with a feeding port (25) communicated with the guide cavity (13), a one-way sealing plate (26) is installed at the feeding port (25), the one-way sealing plate (26) can be opened towards the guide cavity (13), the feeding head (24) has a nozzle (27), the feeding head (24) can be inserted and sealed with the feeding port (25), and the nozzle (27) can extend into the guide cavity (13); It also includes a stirring mechanism, the stirring mechanism includes a stirring box (32), a high-speed stirring head (33), a stirring rod (34) and a stirring motor (35), the stirring box (32) is communicated with the feed inlet (8), the side of the stirring box (32) is fixed with a suction pipe, the high-speed stirring head (33) is rotatably installed in the suction pipe, the stirring motor (35) is fixed on the mixing box (1), and the output shaft of the stirring motor (35) is connected with the high-speed stirring head (33) coaxially through a shaft coupling.
2. A photocatalytically modified asphalt mixture pavement laying apparatus as claimed in claim 1, characterized in that: The material guide plate (12) is an arc-shaped plate, the material guide plate (12) is fixed on the conveying cylinder (7), and the heating wire (11) is located between the material guide plate (12) and the conveying cylinder (7) and is attached to the surface of the conveying cylinder (7).
3. A photocatalytically modified asphalt mixture pavement laying apparatus as claimed in claim 1, characterized in that: The material adding mechanism (5) further comprises a connecting pipe (22), a material conveying pipe (23) and a material conveying head (24), two ends of the connecting pipe (22) are respectively communicated with the auxiliary material tank (2) and the material pump (15), two ends of the material conveying pipe (23) are respectively communicated with the material pump (15) and the material conveying head (24), and the material conveying head (24) can be inserted into the material guide plate (12).
4. A photocatalytically modified asphalt mixture pavement laying apparatus as claimed in claim 2, characterized in that: Further comprising a sealing strip (28) for sealing the gap between the material guide plate (12) and the conveying cylinder (7).
5. A photocatalytically modified asphalt mixture pavement laying apparatus as claimed in claim 4, characterized in that: The feeding port (8) is towards the bottom of the mixing box (1), the top of the mixing box (1) is provided with a device port (29), the material conveying head (24) can be put into the mixing box (1) from the device port (29), the bottom of the mixing box (1) is inclined to one side and provided with a discharging port, the discharging port is connected with a conveying pump (30), and the outlet end of the conveying pump (30) is connected with the spraying head (31).
6. A method of laying a photocatalytically modified asphalt mixture pavement, characterized in that, The method comprises the following steps: S1, raw material preparation, the asphalt, aggregate, mineral powder and photocatalytic modifier raw materials are mixed in the mixing station to form modified asphalt mixture, the mixed modified asphalt mixture is transported to the construction site, part of the photocatalytic modifier raw materials is poured into the mixing box (1), and the photocatalytic modifier solvent is filled into the auxiliary material tank (2); S2, raw material compaction, the photocatalytic modifier raw materials in the mixing box (1) are sucked into the conveying cylinder (7) through the spiral conveying rod (6) and are extruded along the conveying cylinder (7) to the material guide plate (12), and the lumpy powder in the photocatalytic modifier raw materials is crushed; S3, auxiliary material adding, the photocatalytic modifier solvent in the auxiliary material tank (2) is conveyed into the material guide cavity (13) through the material pump (15); S4, raw material defoaming, after the photocatalytic modifier raw materials and the photocatalytic modifier solvent enter the material guide plate (12), they spread along the inner surface of the material guide cavity (13), the material guide plate (12) is heated by the heating wire (11), the small bubbles in the photocatalytic modifier raw materials and the photocatalytic modifier solvent are heated and expanded, and the bubbles are broken after floating up; S5, repeating S1-S4, the photocatalytic modifier raw materials and the photocatalytic modifier solvent are fully mixed to form photocatalytic modifier mixture, and the mixed photocatalytic modifier mixture flows into the mixing box (1) from the material guide cavity (13) and is high-speed stirred in the mixing box; S6, road paving, the modified asphalt mixture transported to the construction site is poured into the road paving equipment for road paving, and after the paving is completed, the photocatalytic modifier mixture in the auxiliary material tank (2) is uniformly sprayed onto the paved modified asphalt mixture road surface through the spraying head (31).
Citation Information
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