Rapid hot mixer for recycling asphalt pavement material

Abstract

The utility model relates to the field of hot mixing machine devices, and discloses an asphalt pavement material recycling rapid hot mixing machine which comprises a fixed seat, the top of the fixed seat is fixedly connected with a machine barrel, the top of the machine barrel is provided with a feeding port, an end cover is arranged in the feeding port, and the end cover is connected with the fixed seat. A pretreatment mechanism and a stirring mechanism are sequentially arranged in the machine barrel from top to bottom, the stirring mechanism comprises a bottom plate, a second rotating shaft is fixedly connected to the surface of the bottom plate, a stirring plate is rotatably connected to the surface of the second rotating shaft, and the pretreatment mechanism comprises a crushing assembly and a filtering assembly. According to the device, by arranging the crushing assembly and the filtering assembly which can be used for material pretreatment, crushing and filtering pretreatment of the asphalt pavement material is achieved, the performance of the recycled asphalt mixture can be improved, the production efficiency can be improved, and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of hot mixers, in particular to a rapid hot mixer for the recycling of asphalt pavement materials. Background Art

[0002] In recent years, with the rapid development of the national economy, the highway construction in China has increased significantly. The national highway network and the asphalt pavement network between regions have been built. Due to the rapid increase in various vehicles and the influence of overloaded trucks, after a period of use, the asphalt pavement has various diseases such as bulges, ruts, bleeding, potholes, and network cracks, which seriously affect driving safety. The mileage of asphalt pavement maintenance is increasing day by day. Some expressways and arterial roads have successively entered the major and medium repair stages. How to recycle the large amount of pavement waste materials generated during the maintenance, repair, and reconstruction of asphalt pavements is a technical topic of great strategic significance in modern highway construction. The technology of recycling asphalt pavement materials is to turn the old asphalt pavement that needs to be repaired or discarded, through excavation, recovery, crushing, and screening, and then add appropriate new aggregates, new asphalt, and other auxiliary materials, and remix them to form recycled asphalt mixture with road use performance, and then use a paver to pave the road surface or base course.

[0003] As described in a hot recycling remixing machine for asphalt pavement (authorization announcement number: CN219410423U) disclosed by the national patent network, "The utility model discloses a hot recycling remixing machine for asphalt pavement, including a machine plate, a mixing cylinder, a mixing component, a discharging component, a paving component, and a rolling component. The mixing cylinder is fixedly installed on the top of the machine plate. The mixing component and the discharging component are both arranged on the mixing cylinder. The mixing component includes a first motor, a vertical shaft, and a plurality of stirring rods. The first motor is fixedly installed on the top of the mixing cylinder, and the output shaft end of the first motor extends into the mixing cylinder. The utility model has reasonable design and good practicability. It can stir and mix the collected asphalt waste materials with new asphalt, new asphalt mixture, regenerant, etc. evenly, and can smoothly discharge the evenly mixed asphalt materials, and can also perform paving and rolling treatments on the asphalt materials in sequence, realizing the integrated operation of mixing, discharging, paving, and rolling of asphalt materials, reducing the operation process and operation time, and improving work efficiency."

[0004] Although this device is provided with multiple groups of stirring rods to mix the materials, in the actual use process, due to the lack of operations such as crushing and filtering of asphalt, large pieces of materials are difficult to be evenly mixed with new asphalt and regenerant, and various impurity particles will also affect the performance of the recycled asphalt mixture. Therefore, it is necessary to set up a rapid hot mixer for the recycling of asphalt pavement materials to solve this problem. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a rapid hot mixer for recycling asphalt pavement materials. By setting a crushing component and a filtering component that can perform material pretreatment, the device realizes the crushing and filtering pretreatment of asphalt pavement materials, which can not only improve the performance of recycled asphalt mixture, but also improve production efficiency and reduce production costs.

[0006] A rapid hot mixer for recycling asphalt pavement materials, including a fixed seat. The top of the fixed seat is fixedly connected with a cylinder. The top of the cylinder is provided with a feeding port, and an end cover is arranged inside the feeding port. Inside the cylinder, a pretreatment mechanism and a stirring mechanism are arranged from top to bottom in sequence. The stirring mechanism includes a bottom plate. The surface of the bottom plate is fixedly connected with a second rotating shaft, and a stirring plate is rotatably connected to the surface of the second rotating shaft. The pretreatment mechanism includes a crushing component and a filtering component. The crushing component includes a crushing chamber, which is opened in the upper half of the cylinder. The inner side surface of the crushing chamber is fixedly connected with an infrared heater and crushing blades. There are two groups of crushing blades, which are symmetrically distributed directly below the end of the crushing chamber far from the feeding port. The filtering component includes a moving groove, which is opened below the crushing chamber. The surface of the moving groove is provided with a fixed bottom frame. The bottom of the fixed bottom frame is fixedly connected with moving wheels, and the positions of the moving wheels correspond to the position of the moving groove. The surface of the fixed bottom frame is provided with an upper fixed frame. A filtering element is clamped between the fixed bottom frame and the upper fixed frame. The filtering element can adopt a fine network pore structure made of materials such as high-strength non-woven fabric, which can effectively intercept impurities and powder in the asphalt on the filtering material, thereby realizing the purification of asphalt.

[0007] The above technical solution further includes:

[0008] A rock wool layer is arranged on the inner side surface of the crushing chamber. A sliding groove is opened at the bottom of the crushing chamber. A first rotating shaft is arranged at the bottom of the sliding groove, and a rotating plate is rotatably connected to the surface of the first rotating shaft. There are two groups of the first rotating shaft and the rotating plate, which are symmetrically distributed on both sides of the sliding groove, and the position of the rotating plate corresponds to the position of the sliding groove.

[0009] A hot air blower is fixedly connected to the outer side of the upper half of the cylinder. The position of the infrared heater is not on the same horizontal line as the position of the crushing blades, and the height of the infrared heater is higher than the position of the crushing blades. The hot air blower can preheat the asphalt material in the crushing chamber and regulate the internal air. The crushing blades are made of heat-resistant materials, which can crush the asphalt pavement materials heated by the infrared heater above, improving the mixing effect of subsequent materials.

[0010] A positioning groove is provided on the surface of the fixed base frame, a positioning block is inserted into the positioning groove, the top of the positioning block is fixedly connected to the surface of the upper fixed frame, a locking nut is provided on the surface of the positioning block, and the positioning block is bolted to the fixed base frame through the locking nut.

[0011] The positioning grooves, positioning blocks and locking nuts are arranged in multiple groups and are evenly distributed on the top of the fixed base frame. A handle is fixedly connected to the surface of one end of the fixed base frame away from the barrel. The handles are arranged in two groups and are symmetrically distributed on the outer surface of the fixed base frame. A side cover plate is inserted into the barrel near the handle.

[0012] A motor is fixedly connected to the bottom of the fixing seat, the position of the motor corresponds to the position of the second rotating shaft, the top of the second rotating shaft is arranged in a semicircular shape, and the stirring plates are arranged in multiple groups and each group is arranged with multiple stirring plates.

[0013] A connecting rod is also provided on the surface of the second rotating shaft, and a scraper is fixedly connected to the surface of one end of the connecting rod away from the second rotating shaft. The surface of the scraper is fixedly connected to edges. The scraper can scrape and stir the attachments on the inner wall to prevent uneven stirring and adverse damage.

[0014] A feeding port is provided on the surface of the bottom plate, a movable plug plate is provided inside the feeding port, a telescopic rod is fixedly connected to the side of the movable plug plate, the telescopic rod is fixedly connected to the inside of the bottom plate, the position of the movable plug plate corresponds to the position of the feeding port, and a discharge pipe is provided at the bottom of the feeding port.

[0015] Beneficial effects:

[0016] 1. The device is provided with a crushing component and a filtering component. The device realizes the pretreatment of asphalt pavement materials by providing a pretreatment mechanism including a crushing component and a filtering component. On the one hand, the crushing component is used to refine the material, so that the surface area of ​​the material is increased, which is conducive to the penetration and mixing of materials such as regeneration agent and new asphalt, thereby improving the regeneration efficiency, and at the same time, it can reduce the impact and wear of large pieces of material on subsequent processing equipment and extend the service life of the equipment; on the other hand, the filtering component can effectively remove impurities in the recycled asphalt pavement materials, such as soil, stones, metal fragments, etc., improve the purity of the recycled asphalt mixture, and significantly improve the flatness, durability and anti-skid performance of the recycled asphalt pavement.

[0017] 2. The device is provided with a stirring mechanism, which is provided with a stirring mechanism with a scraper. On the one hand, the stirring plate and the scraper can continuously scrape and turn the mixture during the stirring process, so that the new and old asphalt, regeneration agent, aggregate and other materials are more fully mixed, thereby improving the stirring efficiency and the uniformity of the mixture; on the other hand, the setting of the scraper can help to continuously scrape off the attachments on the inner wall of the mixing drum during the stirring process, reducing the wear of the mixing drum caused by material adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0019] Figure 1 It is a schematic cross-sectional view of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of part A of the structural filter assembly of the utility model;

[0021] Figure 3 This is a schematic diagram of the stirring mechanism B of the utility model structure;

[0022] Figure 4 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 5 This is a partial exploded view of the structural filter assembly of the utility model;

[0024] Figure 6 This is a partial cross-sectional view of the stirring mechanism of the utility model structure.

[0025] In the figure: 11, fixed seat; 12, barrel; 13, feed port; 14, end cover; 2, crushing assembly; 21, infrared heater; 22, crushing blade; 23, slide; 24, rock wool layer; 25, first rotating shaft; 26, rotating plate; 27, hot air blower; 3, filter assembly; 31, movable groove; 32, fixed base; 33, movable wheel; 34, handle; 35, positioning groove; 36, upper fixed frame; 37, positioning block; 38, locking nut; 39, filter element; 310, side cover; 4, stirring mechanism; 41, bottom plate; 42, motor; 43, second rotating shaft; 44, stirring plate; 45, connecting rod; 46, scraper; 47, rib; 48, telescopic rod; 49, movable plug plate; 410, feed port; 411, discharge pipe. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0027] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Embodiment 1

[0029] Please refer to Figures 1-6 , a rapid hot mixer for recycling asphalt pavement materials, including a fixed seat 11. A machine barrel 12 is fixedly connected to the top of the fixed seat 11. A feeding port 13 is opened at the top of the machine barrel 12. An end cover 14 is arranged inside the feeding port 13. A pretreatment mechanism and a stirring mechanism 4 are sequentially arranged inside the machine barrel 12 from top to bottom. The stirring mechanism 4 includes a bottom plate 41. A second rotating shaft 43 is fixedly connected to the surface of the bottom plate 41. A stirring plate 44 is rotatably connected to the surface of the second rotating shaft 43. The pretreatment mechanism includes a crushing assembly 2 and a filtering assembly 3. A power supply, a hot air blower frame, etc. are also arranged on the surface of the fixed seat 11. Shock-absorbing support columns are arranged at the bottom of the fixed seat 11 to provide additional support and shock-absorbing capacity for the device.

[0030] The crushing assembly 2 includes a crushing chamber. The crushing chamber is opened in the upper half of the machine barrel 12. An infrared heater 21 and crushing blades 22 are fixedly connected to the inner surface of the crushing chamber. Two groups of crushing blades 22 are arranged and symmetrically distributed directly below the end of the crushing chamber far from the feeding port 13.

[0031] The filtering assembly 3 includes a moving groove 31. The moving groove 31 is opened below the crushing chamber. A fixed bottom frame 32 is arranged on the surface of the moving groove 31. A moving wheel 33 is fixedly connected to the bottom of the fixed bottom frame 32. The position of the moving wheel 33 corresponds to the position of the moving groove 31. An upper fixed frame 36 is arranged on the surface of the fixed bottom frame 32. A filtering element 39 is clamped between the fixed bottom frame 32 and the upper fixed frame 36. The filtering element 39 can adopt a fine network pore structure made of materials such as high-strength non-woven fabric, which can effectively intercept impurities and powders in the asphalt on the filtering material, thereby realizing the purification of the asphalt.

[0032] A rock wool layer 24 is provided on the inner side surface of the crushing cavity. A chute 23 is opened at the bottom of the crushing cavity. A first rotating shaft 25 is provided at the bottom of the chute 23. A rotating plate 26 is rotatably connected to the surface of the first rotating shaft 25. There are two groups of the first rotating shaft 25 and the rotating plate 26 and they are symmetrically distributed on both sides of the chute 23. The position of the rotating plate 26 corresponds to the position of the chute 23.

[0033] A hot air blower 27 is fixedly connected to the outer side of the upper half of the barrel 12. The position of the infrared heater 21 and the position of the crushing blade 22 are not on the same horizontal line and the height of the infrared heater 21 is higher than the position of the crushing blade 22. The hot air blower 27 can preheat the asphalt material in the crushing chamber and regulate the internal air. The crushing blade 22 is made of a high-temperature resistant material and can crush the asphalt pavement material heated by the infrared heater 21 above, improving the mixing effect of the subsequent materials.

[0034] A positioning groove 35 is opened on the surface of the fixed chassis 32. A positioning block 37 is inserted into the inside of the positioning groove 35. The top of the positioning block 37 is fixedly connected to the surface of the upper fixed frame 36. A locking nut 38 is provided on the surface of the positioning block 37. The positioning block 37 is bolted to the fixed chassis 32 through the locking nut 38.

[0035] There are multiple groups of the positioning groove 35, the positioning block 37, and the locking nut 38 and they are evenly distributed on the top of the fixed chassis 32. A handle 34 is fixedly connected to the surface of the end of the fixed chassis 32 away from the barrel 12. There are two groups of the handle 34 and they are symmetrically distributed on the outer surface of the fixed chassis 32. A side cover plate 310 is inserted at the position of the barrel 12 close to the handle 34.

[0036] The filter element 39 is fixed by bolting between the fixed chassis 32 and the upper fixed frame 36, so it is detachable, facilitating subsequent replacement and cleaning, improving the flexibility of the device. Only disassembling the filtering mechanism alone can help reduce the workload and improve the working efficiency of the equipment.

[0037] Working principle: During actual use, when it is necessary to recycle asphalt pavement materials, first, the end cover 14 needs to be opened, and the materials are put in from the feeding port 13. Then, the end cover 14 is closed. Next, the infrared heater 21 is started, and the hot air blower 27 is used to heat the put-in materials. The heated materials will be crushed by the crushing blades 22. After the crushing work is completed, the hot air blower 27 is started to process the internal air. Then, the first rotating shaft 25 is adjusted to drive the rotating plate 26 to rotate and open, so that the crushed materials fall from the chute 23 and land on the surface of the filter element 39. The filtered materials will then fall and wait for subsequent mixing and stirring work. When the equipment is idle and it is necessary to replace and clean the filter element 39, first, the side cover plate 310 needs to be opened. Then, hold the handle 34, and through the cooperation of the moving wheel 33 and the moving groove 31, the fixed bottom frame 32 is taken out of the equipment. Then, by rotating the locking nut 38, the positioning block 37 is separated from the positioning groove 35. Then, the upper fixing frame 36 is removed from the surface of the fixed bottom frame 32, and the sandwiched filter element 39 is removed and waiting for subsequent cleaning and replacement operations.

[0038] Embodiment 2

[0039] Please refer to Figures 1-6 , on the basis of Embodiment 1, further, a motor 42 is fixedly connected to the bottom of the fixed seat 11. The position of the motor 42 corresponds to the position of the second rotating shaft 43. The top of the second rotating shaft 43 is set to be semicircular, and multiple groups of stirring plates 44 are provided, and each group has multiple.

[0040] A connecting rod 45 is further provided on the surface of the second rotating shaft 43. One end surface of the connecting rod 45 away from the second rotating shaft 43 is fixedly connected with a scraping plate 46. The surface of the scraping plate 46 is fixedly connected with ribs 47. The scraping plate 46 can scrape and stir the inner wall attachments to prevent uneven stirring and adverse damage, etc.

[0041] Each component in the stirring mechanism 4 is arranged inside the stirring cavity opened in the lower half of the barrel 12. The side wall of the stirring cavity can be installed with an electric heating plate to ensure the temperature of the materials during stirring.

[0042] A blanking port 410 is opened on the surface of the bottom plate 41. A movable plug plate 49 is arranged inside the blanking port 410. One side of the movable plug plate 49 is fixedly connected with a telescopic rod 48. The telescopic rod 48 is fixedly connected inside the bottom plate 41. The position of the movable plug plate 49 corresponds to the position of the blanking port 410. An outlet pipe 411 is arranged at the bottom of the blanking port 410. The movable plug plate 49 can realize the sealing and opening of the blanking port 410 through the adjustment of the telescopic rod 48, which is convenient for the stirring and mixing and blanking of the materials. A conveying shaft is arranged inside the outlet pipe 411, and the materials can be output from the pipe.

[0043] Working principle: In actual use, when the material falls after being filtered by the filter element 39, the motor 42 is started, and the motor 42 drives the second rotating shaft 43 to rotate, so that the stirring plate 44 arranged on the surface of the second rotating shaft 43 stirs the material inside the lower half of the barrel 12 together. When some of the material sticks to the inner surface of the barrel 12, the surface of the second rotating shaft 43 is also provided with a connecting rod 45 and a scraper 46, which can scrape off the attachments on the inner wall of the barrel while the surface of the second rotating shaft 43 rotates, and improve the stirring efficiency. After mixing evenly, the telescopic rod 48 located inside the bottom plate 41 is started to retract and drive the movable plug plate 49 fixedly connected to its surface to move, so that the movable plug plate 49 is opened, and the discharge port 410 is not blocked. The rotation of the connecting rod 45 completes the discharge of the material, and the fallen material is discharged through the discharge pipe 411 and collected, waiting for subsequent processing.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rapid hot-mixing machine for recycling asphalt pavement materials, comprising a fixed seat (11), characterized in that: The top of the fixed seat (11) is fixedly connected to a barrel (12), the top of the barrel (12) is provided with a feed port (13), the interior of the feed port (13) is provided with an end cover (14), the interior of the barrel (12) is provided with a pretreatment mechanism and a stirring mechanism (4) from top to bottom, the stirring mechanism (4) comprises a bottom plate (41), the surface of the bottom plate (41) is fixedly connected to a second rotating shaft (43), the surface of the second rotating shaft (43) is rotatably connected to a stirring plate (44), the pretreatment mechanism comprises a crushing component (2) and a filtering component (3); The crushing assembly (2) comprises a crushing chamber, the crushing chamber is opened in the upper part of the barrel (12), an infrared heater (21) and crushing blades (22) are fixedly connected to the inner surface of the crushing chamber, and the crushing blades (22) are provided in two groups and are symmetrically distributed just below one end of the crushing chamber away from the feed inlet (13); The filter assembly (3) comprises a movable groove (31), wherein the movable groove (31) is opened below the crushing chamber, a fixed base frame (32) is arranged on the surface of the movable groove (31), a movable wheel (33) is fixedly connected to the bottom of the fixed base frame (32), and the position of the movable wheel (33) corresponds to the position of the movable groove (31), an upper fixed frame (36) is arranged on the surface of the fixed base frame (32), and a filter element (39) is sandwiched between the fixed base frame (32) and the upper fixed frame (36).

2. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 1, characterized in that: The inner side surface of the crushing chamber is provided with a rock wool layer (24), the bottom of the crushing chamber is provided with a slide groove (23), the bottom of the slide groove (23) is provided with a first rotating shaft (25), the surface of the first rotating shaft (25) is rotatably connected with a rotating plate (26), the first rotating shaft (25) and the rotating plate (26) are provided in two groups and are symmetrically distributed on both sides of the slide groove (23), and the position of the rotating plate (26) corresponds to the position of the slide groove (23).

3. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 1, characterized in that: A hot air blower (27) is fixedly connected to the outer side of the upper half of the barrel (12); the position of the infrared heater (21) and the position of the crushing blade (22) are not on the same horizontal line, and the height of the infrared heater (21) is higher than that of the crushing blade (22).

4. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 1, characterized in that: A positioning groove (35) is provided on the surface of the fixed base frame (32), a positioning block (37) is inserted into the interior of the positioning groove (35), the top of the positioning block (37) is fixedly connected to the surface of the upper fixed frame (36), a locking nut (38) is provided on the surface of the positioning block (37), and the positioning block (37) is bolted to the fixed base frame (32) via the locking nut (38).

5. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 4, characterized in that: The positioning grooves (35), positioning blocks (37), and locking nuts (38) are provided in multiple groups and are evenly distributed on the top of the fixed base frame (32); a handle (34) is fixedly connected to an end surface of the fixed base frame (32) away from the barrel (12); the handle (34) is provided in two groups and is symmetrically distributed on the outer surface of the fixed base frame (32); and a side cover plate (310) is inserted at a position of the barrel (12) close to the handle (34).

6. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 1, characterized in that: A motor (42) is fixedly connected to the bottom of the fixed seat (11), the position of the motor (42) corresponds to the position of the second rotating shaft (43), the top of the second rotating shaft (43) is arranged in a semicircular shape, and the stirring plates (44) are arranged in multiple groups and each group is provided with multiple stirring plates.

7. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 6, characterized in that: A connecting rod (45) is also provided on the surface of the second rotating shaft (43); a scraper (46) is fixedly connected to the surface of one end of the connecting rod (45) away from the second rotating shaft (43); and a rib (47) is fixedly connected to the surface of the scraper (46).

8. The rapid hot mixing machine for recycling asphalt pavement materials according to claim 1, characterized in that: A discharge port (410) is provided on the surface of the bottom plate (41), a movable plug plate (49) is provided inside the discharge port (410), a telescopic rod (48) is fixedly connected to the side of the movable plug plate (49), the telescopic rod (48) is fixedly connected to the inside of the bottom plate (41), the position of the movable plug plate (49) corresponds to the position of the discharge port (410), and a discharge pipe (411) is provided at the bottom of the discharge port (410).

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