Feeding device for asphalt mixture thermal regeneration roller

Abstract

The utility model belongs to the technical field of asphalt mixture thermal regeneration, and discloses a feeding device for an asphalt mixture thermal regeneration roller, the feeding device comprises a hopper, a material guide plate and a driving part used for driving the material guide plate to move, the hopper is internally provided with a material guide cavity, and the top of the hopper is provided with a feeding port communicated with the material guide cavity; the side portion of the hopper is provided with a discharging port communicated with the material guiding cavity, the hopper is arranged at the feeding end of the roller so that materials in the material guiding cavity can enter the roller through the discharging port, the material guiding plate is located in the material guiding cavity and provided with a first end and a second end, and the second end extends upwards from the first end to the direction away from the discharging port. Compared with the prior art, the mode for eliminating the material blockage of the feeding device is mainly characterized in that the driving piece works only when the material blockage occurs, so that the energy consumption of the feeding device is reduced, meanwhile, the working time of the driving piece is shortened, the service life of the driving piece is prolonged, and the working efficiency of the feeding device is improved. And the maintenance and use cost of the feeding device is reduced.

Description

Technical Field

[0001] This application relates to the technical field of hot recycling of asphalt mixtures, and in particular to a feeding device for a hot recycling roller of asphalt mixtures. Background Technology

[0002] Asphalt recycling technology refers to the use of specialized hot recycling equipment to loosen old asphalt pavement, add recycling agents and new asphalt mixture, and then remix, pave and compact it to achieve the recycling of old asphalt pavement.

[0003] Depending on the construction and location, asphalt hot recycling technology can be divided into two types: in-situ hot recycling and plant-mixed hot recycling. In-situ hot recycling involves heating, loosening, adding recycling agents and new asphalt mixtures on-site, then remixing, paving, and compacting. This method offers fast construction speed, minimal traffic disruption, and full utilization of old pavement materials. Plant-mixed hot recycling involves excavating the old asphalt pavement, transporting it back to a mixing plant, crushing and screening it, and then designing the mix proportions according to the quality requirements of different pavement layers. The proportions of old asphalt mixtures are determined, and recycling agents, new asphalt materials, and new aggregates are added. The mixture is then remixed in a mixing plant to form a new asphalt pavement, which is finally paved as recycled asphalt pavement. This method offers easier process control, and the recycled asphalt mixture exhibits relatively ideal performance.

[0004] Existing hot recycling equipment for asphalt mixtures includes a feeding device, a drum, and a heating furnace. When recycling asphalt mixtures, waste asphalt mixtures are poured into the feeding device, and then the asphalt mixture enters the drum under the action of the feeding device. The drum rotates to stir the mixture, and at the same time, hot air generated by the heating furnace enters the drum to heat the asphalt mixture. As a result, the asphalt melts after being heated, and the melted asphalt and aggregates are remixed under the stirring of the blades inside the drum.

[0005] In related technologies, such as Chinese invention patent with publication number CN108532412A, a feeding device for a hot recycling roller of asphalt mixture is disclosed. The device includes a housing, a conveying chamber for conveying asphalt mixture is provided inside the housing, an inlet communicating with the conveying chamber and an outlet for connecting with the inlet end of the roller are provided on the housing, and a vibrator is provided on the side wall of the housing to cause the conveying chamber inside the housing to vibrate to prevent the asphalt mixture in the conveying chamber from blocking the outlet.

[0006] When the aforementioned feeding device is in operation, the vibrator needs to work continuously, which results in high energy consumption of the feeding device and increases the recycling cost of asphalt mixture. Utility Model Content

[0007] To reduce energy consumption, this application provides a feeding device for a hot recycling drum of asphalt mixture.

[0008] This application provides a feeding device for a hot recycling drum of asphalt mixture, which adopts the following technical solution:

[0009] A feeding device for a hot recycling drum of asphalt mixture includes a hopper, a guide plate, and a driving component for driving the guide plate. The hopper has a guide cavity inside, an inlet communicating with the guide cavity at the top of the hopper, and an outlet communicating with the guide cavity at the side of the hopper. The hopper is located at the inlet end of the drum so that the material inside the guide cavity enters the drum through the outlet. The guide plate is located in the guide cavity and has a first end hinged to the outlet and a second end opposite to the first end. The second end extends upward from the first end in a direction away from the outlet.

[0010] By adopting the above technical solution, when feeding the roller with the feeding device of this application, the material is poured into the hopper, and then enters the guide cavity through the feed port. The material falls onto the guide plate and slides down the guide plate through the discharge port into the roller. If a blockage occurs in the guide cavity, the drive unit is activated, which drives the guide plate to rotate around the first end, gradually reducing the tilt angle of the guide plate. This causes the guide plate to apply a squeezing force towards the discharge port to the material in the guide cavity, allowing the material in the material cavity to enter the roller through the discharge port, thus eliminating the blockage. The main difference between the feeding device in this application and the prior art in eliminating material blockage is that the drive unit in this application only works when a blockage occurs, reducing the energy consumption of the feeding device and shortening the working time of the drive unit to extend its service life and reduce the maintenance and operating costs of the feeding device.

[0011] Optionally, the driving member is located at the bottom of the guide plate and is used to drive the guide plate to rotate around the first end.

[0012] By adopting the above technical solution, since the driving component is located at the bottom of the guide plate, the driving component is isolated from the material through the guide plate, so as to avoid the material hitting the driving component and causing damage to the driving component, thereby greatly reducing the failure rate of the driving component and extending its service life.

[0013] Optionally, the guide plate has a first position where the second end abuts against the cavity wall of the guide cavity and a second position where the second end is separated from the cavity wall of the guide cavity.

[0014] By adopting the above technical solution, when the guide plate is in the first position, the second end abuts against the cavity wall of the guide cavity, thereby enabling the cavity wall of the guide cavity to support the guide plate, thereby reducing the load on the drive component when the guide plate is in the first position, and thus extending the service life of the drive component.

[0015] Optionally, the hopper has a first side and a second side opposite to the first side, the discharge port is located on the first side, and the cavity wall of the guiding cavity is provided with a guide plate located on the first side, the guide plate being inclined from top to bottom toward the interior of the guiding cavity.

[0016] By adopting the above technical solution, since the guide plate is located on the first side and is inclined from top to bottom toward the inside of the material guiding cavity, the guide plate can guide the material into the inside of the material guiding cavity, so that there is a distance between the position of the material falling onto the guide plate and the discharge port, so as to avoid the material accumulating at the discharge port and causing the discharge port to be blocked.

[0017] Optionally, a sealing plate is provided at the bottom of the guide plate, and the sealing plate is connected to the cavity wall of the material guiding cavity so that the cavity wall of the material guiding cavity, the guide plate and the sealing plate together form a liquid receiving cavity. An inlet communicating with the liquid receiving cavity is provided on the outside of the hopper, and an outlet communicating with the liquid receiving cavity is provided on the guide plate and / or the sealing plate.

[0018] By adopting the above technical solution, when adding material to the drum through the feeding device, the external water supply equipment can be connected to the liquid inlet so that water enters the liquid chamber through the liquid outlet, and then the water in the liquid chamber is sprayed out through the liquid outlet to wet the material in the guide chamber, so as to avoid the material from generating dust and thus increase the cleanliness of the feeding device.

[0019] Optionally, the feeding device further includes a swing plate disposed in the material guiding cavity, with one top end of the swing plate hinged to the cavity wall of the material guiding cavity and one bottom end of the swing plate resting against the second end.

[0020] By adopting the above technical solution, when the driving component drives the guide plate, the second end of the guide plate swings around the first end. Since the swing plate rests against the second end, the bottom end of the swing plate swings around the top end, thereby causing the swing plate to apply a squeezing force to the material in the direction of the discharge port, so as to further improve the squeezing effect on the material. At the same time, the swing plate can also prevent the material from falling through the gap between the second end and the wall of the guide cavity due to the swing of the second end around the first end.

[0021] Optionally, the swing plate is convex outward toward the side where the guide plate is located.

[0022] By adopting the above technical solution, since the swing plate is convex outward toward the side where the guide plate is located, the swing plate fits the guide plate more closely, thereby reducing the volume of the guide cavity occupied by the swing plate and ensuring the effective volume of material contained in the guide cavity.

[0023] Optionally, a reinforcing frame is provided at the bottom of the guide plate, and the driving component is connected to the reinforcing frame.

[0024] By adopting the above technical solution, the structural strength of the guide plate is increased due to the reinforcing frame, so as to avoid the deformation of the guide plate caused by the material falling onto it. At the same time, the drive component is connected to the reinforcing frame, which can increase the connection stability between the drive component and the guide plate.

[0025] Optionally, the cavity wall of the material guiding cavity is provided with a stop rib, which is located at the bottom of the reinforcing frame and can support the reinforcing frame.

[0026] By adopting the above technical solution, since the stop rib is located at the bottom of the reinforcing frame, the reinforcing frame can rest against the stop rib when the guide plate is in the first position, so that the stop rib supports the reinforcing frame, thereby further reducing the load on the drive component, and further extending the service life and failure rate of the drive component.

[0027] Optionally, a gate is provided at the discharge port, the gate comprising multiple hinged blades, with the uppermost blade hinged to the top of the discharge port.

[0028] By adopting the above technical solution, when the material in the guide chamber enters the drum, the material exerts a force on the blades in the direction of the inside of the drum, which in turn causes the blades to move inward toward the inside of the drum and open the discharge port, so that the material enters the inside of the drum through the discharge port. After all the material has entered the drum, the gate moves away from the drum under its own gravity to close the discharge port, thereby preventing the material in the drum from being discharged through the feeding device.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The drive unit in this application only works when the material is blocked, so as to reduce the energy consumption of the feeding device and shorten the working time of the drive unit to extend the service life of the drive unit and reduce the maintenance and use costs of the feeding device;

[0031] 2. The driving component in this application is located at the bottom of the guide plate and is used to drive the guide plate to rotate around the first end, thereby separating the driving component from the material through the guide plate to avoid the material hitting the driving component and causing damage to the driving component, thus greatly reducing the failure rate of the driving component and extending the service life of the driving component.

[0032] 3. The guide plate in this application has a first position where the second end abuts against the cavity wall of the guide cavity and a second position where the second end is separated from the cavity wall of the guide cavity. When the guide plate is in the first position, the second end abuts against the cavity wall of the guide cavity, thereby enabling the cavity wall of the guide cavity to support the guide plate, thereby reducing the load on the drive component when the guide plate is in the first position, and thus extending the service life of the drive component. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the feeding device for the hot recycling drum of asphalt mixture in the embodiments of this application;

[0034] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0035] Figure 3 This is a schematic diagram of the feeding device in an embodiment of this application.

[0036] Reference numerals: 1. Hopper; 11. Guide cavity; 12. Inlet; 13. Outlet; 14. Guide plate; 15. Sealing plate; 16. Liquid chamber; 161. Outlet; 162. Inlet; 17. Stop rib; 18. Inspection port; 19. Mounting cavity; 2. Guide plate; 21. Reinforcing frame; 3. Drive component; 4. Swing plate; 5. Door body; 51. Blade; 511. Fireproof flexible pad. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0038] This application discloses a feeding device for a hot recycling drum of asphalt mixture.

[0039] refer to Figures 1 to 3 A feeding device for a hot recycling drum of asphalt mixture includes a hopper 1, a guide plate 2, and a driving component 3 for driving the guide plate 2. The hopper 1 has a guide cavity 11 inside, and the top of the hopper 1 has a feed port 12 communicating with the guide cavity 11. The side of the hopper 1 has a discharge port 13 communicating with the guide cavity 11. The hopper 1 is located at the feed end of the drum so that the material inside the guide cavity 11 enters the drum through the discharge port 13. The guide plate 2 is located in the guide cavity 11, and the guide plate 2 has a first end hinged to the discharge port 13 and a second end opposite to the first end. The second end extends upward from the first end in a direction away from the discharge port 13.

[0040] When feeding the roller using the feeding device of this application, the material is poured into the hopper 1, and then the material enters the guide chamber 11 through the feed port 12. The material falls onto the guide plate 2 and slides down the guide plate 2 through the discharge port 13 into the roller. If a blockage occurs in the guide chamber 11, the drive unit 3 is activated, and then the drive unit 3 drives the guide plate 2, so that the guide plate 2 rotates around the first end, so that the tilt angle of the guide plate 2 gradually decreases, so that the guide plate 2 applies a squeezing force to the material in the guide chamber 11 in the direction of the discharge port 13, so that the material in the material chamber enters the roller through the discharge port 13 to eliminate the blockage.

[0041] The main difference between the feeding device in this application and the prior art in eliminating material blockage is that the drive component 3 in this application only works when material blockage occurs, thereby reducing the energy consumption of the feeding device and shortening the working time of the drive component 3 to extend its service life and reduce the maintenance and use costs of the feeding device.

[0042] This application does not specifically limit the structure of the guide plate 2; preferably, refer to... Figure 1 The guide plate 2 is an arc-shaped plate to enhance its guiding effect on materials. In other embodiments, the guide plate 2 can also be a flat plate structure.

[0043] In a preferred embodiment, refer to Figure 1 The driving component 3 is located at the bottom of the guide plate 2 and is used to drive the guide plate 2 to rotate around the first end. This allows the driving component 3 to be separated from the material through the guide plate 2, so as to avoid the material hitting the driving component 3 and causing damage to the driving component 3. This greatly reduces the failure rate of the driving component 3 and extends the service life of the driving component 3.

[0044] This application does not specifically limit the structure of the driving component 3; preferably, refer to... Figure 1 The driving component 3 is a hydraulic cylinder, with its cylinder body hinged to the inner wall of the hopper 1 and its piston rod hinged to the guide plate 2. In other embodiments, the driving component 3 can also be a pneumatic cylinder, an electric actuator, or other structures capable of driving the guide plate 2 to rotate.

[0045] In a preferred embodiment, the guide plate 2 has a first position where the second end abuts against the cavity wall of the guide cavity 11 and a second position where the second end is separated from the cavity wall of the guide cavity 11.

[0046] When the guide plate 2 is in the first position, the second end abuts against the cavity wall of the guide cavity 11, thereby enabling the cavity wall of the guide cavity 11 to support the guide plate 2, thereby reducing the load on the drive component 3 when the guide plate 2 is in the first position, and thus extending the service life of the drive component 3.

[0047] In a preferred embodiment, refer to Figure 1 and Figure 2 The hopper 1 has a first side and a second side opposite to the first side. The discharge port 13 is located on the first side. The cavity wall of the guiding cavity 11 is provided with a guide plate 14 located on the first side. The guide plate 14 is inclined from top to bottom toward the inside of the guiding cavity 11, so that the guide plate 14 can guide the material into the inside of the guiding cavity 11, so that there is a distance between the position of the material falling onto the guide plate 2 and the discharge port 13, so as to avoid the material accumulating at the discharge port 13 and causing the discharge port 13 to be blocked.

[0048] Furthermore, refer to Figure 1 and Figure 2 A sealing plate 15 is provided at the bottom of the guide plate 14. The sealing plate 15 is connected to the cavity wall of the material guiding cavity 11 so that the cavity wall of the material guiding cavity 11, the guide plate 14 and the sealing plate 15 together form a liquid receiving cavity 16. An inlet 162 communicating with the liquid receiving cavity 16 is provided on the outside of the hopper 1. An outlet 161 communicating with the liquid receiving cavity 16 is provided on the guide plate 14 and / or the sealing plate 15.

[0049] When material is added to the drum via the feeding device, an external water supply device can be connected to the inlet 162 so that water enters the liquid-containing chamber 16 through the outlet 161. The water in the liquid-containing chamber 16 is then sprayed out through the outlet 161, thus wetting the material in the guide chamber 11 to prevent dust accumulation and improve the cleanliness of the feeding device. Simultaneously, the sealing plate 15 also supports the guide plate 14, increasing its stability.

[0050] Preferably, both the guide plate 14 and the sealing plate 15 are provided with liquid outlets 161 that communicate with the liquid chamber 16, so that the water entering the liquid chamber 16 can be sprayed upward and downward to improve the dust suppression effect.

[0051] In a preferred embodiment, the feeding device further includes a swing plate 4 disposed in the guide cavity 11, with one top end of the swing plate 4 hinged to the cavity wall of the guide cavity 11 and one bottom end of the swing plate 4 resting against the second end.

[0052] When the driving component 3 drives the guide plate 2, the second end of the guide plate 2 swings around the first end. Since the swing plate 4 rests against the second end, the bottom end of the swing plate 4 swings around the top end, thereby causing the swing plate 4 to apply a squeezing force to the material in the direction of the discharge port 13, so as to further improve the squeezing effect on the material. At the same time, the swing plate 4 can also prevent the material from falling through the gap between the second end and the cavity wall of the guide cavity 11 due to the swing of the second end around the first end.

[0053] This application does not specifically limit the structure of the swing plate 4. Preferably, the swing plate 4 protrudes outward toward the side where the guide plate 2 is located, that is, the swing plate 4 is an arc-shaped plate, which makes the swing plate 4 fit more closely to the guide plate 2, thereby reducing the volume of the guide cavity 11 occupied by the swing plate 4, and thus ensuring the effective volume of material contained in the guide cavity 11. In other embodiments, the swing plate 4 can also be a flat plate structure.

[0054] In a preferred embodiment, refer to Figure 1 The bottom of the guide plate 2 is provided with a reinforcing frame 21, and the driving component 3 is connected to the reinforcing frame 21, thereby increasing the structural strength of the guide plate 2 to prevent the material from falling onto the guide plate 2 and causing the guide plate 2 to deform. At the same time, the connection between the driving component 3 and the reinforcing frame 21 can increase the connection stability between the driving component 3 and the guide plate 2.

[0055] Furthermore, refer to Figure 1 The cavity wall of the feed chamber 11 is provided with a stop rib 17, which is located at the bottom of the reinforcing frame 21 and can support the reinforcing frame 21.

[0056] In other words, when the guide plate 2 is in the first position, the reinforcing frame 21 can rest against the stop rib 17 so that the stop rib 17 supports the reinforcing frame 21, thereby further reducing the load on the drive component 3 and further extending the service life and failure rate of the drive component 3.

[0057] In a preferred embodiment, refer to Figure 1 , Figure 2 and Figure 3 A gate 5 is provided at the discharge port 13. The gate 5 includes multiple hinged blades 51, with the uppermost blade 51 hinged to the top of the discharge port 13.

[0058] When the material in the feed chamber 11 enters the drum, the material exerts a force on the blades 51 in the direction of the inside of the drum, which in turn causes the blades 51 to move inward toward the inside of the drum to open the discharge port 13, so that the material enters the inside of the drum through the discharge port 13. After all the material has entered the drum, the door 5 moves away from the drum under its own gravity to close the discharge port 13, thereby preventing the material in the drum from being discharged through the feeding device.

[0059] Furthermore, refer to Figure 2 A fireproof flexible pad 511 is provided on the side of the blade 51 away from the drum, which avoids the impact of the material on the blade 51 and causes the blade 51 to deform, thereby ensuring the service life of the blade 51 and ensuring the closing effect of the door 5 on the discharge port 13.

[0060] In a preferred embodiment, refer to Figure 1 The hopper 1 also has an installation cavity 19 located at the bottom of the guide plate 2. The drive component 3 is located in the installation cavity 19. The second side of the guide plate is provided with an inspection port 18 that communicates with the installation cavity 19, so as to avoid the staff from inspecting and assembling the drive component 3 through the inspection port 18, and at the same time, it can also ensure the heat dissipation performance of the drive component 3.

[0061] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeding device for an asphalt mixture hot-recycling drum, characterized in that, The feeding device comprises a hopper (1), a guide plate (2) and a driving member (3) for driving the guide plate (2) to move. The hopper (1) has a guide cavity (11) inside. The top of the hopper (1) has a feeding port (12) communicating with the guide cavity (11). The side of the hopper (1) has a discharging port (13) communicating with the guide cavity (11). The hopper (1) is arranged at the feeding end of a roller, so that the material inside the guide cavity (11) enters the inside of the roller through the discharging port (13). The guide plate (2) is located in the guide cavity (11) and has a first end hinged at the discharging port (13) and a second end opposite to the first end, which extends upward away from the discharging port (13).

2. The feeding device for hot recycling drum of asphalt mixture according to claim 1, characterized in that, The driving member (3) is arranged at the bottom of the guide plate (2) and is used for driving the guide plate (2) to rotate around the first end.

3. The feeding device for hot-recycling drum of asphalt mixture according to claim 1, characterized in that, The guide plate (2) has a first position where the second end is in contact with the cavity wall of the guide cavity (11) and a second position where the second end is separated from the cavity wall of the guide cavity (11).

4. The feeding device for hot-recycling drum of asphalt mixture according to claim 1, characterized in that, The hopper (1) has a first side and a second side opposite to the first side. The discharging port (13) is arranged at the first side. The cavity wall of the guide cavity (11) is provided with a guide plate (14) located at the first side. The guide plate (14) is arranged to be inclined downward toward the inside of the guide cavity (11).

5. The feeding device for hot-recycling drum of asphalt mixture according to claim 4, characterized in that, The bottom of the guide plate (14) is provided with a sealing plate (15) connected to the cavity wall of the guide cavity (11). The cavity wall of the guide cavity (11), the guide plate (14) and the sealing plate (15) together form a liquid containing cavity (16). The outside of the hopper (1) is provided with a liquid inlet (162) communicating with the liquid containing cavity (16). The guide plate (14) and / or the sealing plate (15) is provided with a liquid outlet (161) communicating with the liquid containing cavity (16).

6. The feeding device for hot-recycling drum of asphalt mixture according to claim 1, characterized in that, The feeding device further comprises a swing plate (4) arranged in the guide cavity (11). The top end of the swing plate (4) is hinged to the cavity wall of the guide cavity (11). The bottom end of the swing plate (4) is arranged to abut against the second end.

7. The feeding device for hot-recycling drum of asphalt mixture according to claim 6, characterized in that, The swing plate (4) is arranged to be convex toward the side where the guide plate (2) is located.

8. The feeding device for hot-recycling drum of asphalt mixture according to claim 1, characterized in that, The bottom of the guide plate (2) is provided with a reinforcing frame (21). The driving member (3) is connected to the reinforcing frame (21).

9. The hot-in-place recycled asphalt mixture drum with a feeding device according to claim 8, characterized in that, The cavity wall of the guide cavity (11) is provided with a stop rib (17) located at the bottom of the reinforcing frame (21) and capable of supporting the reinforcing frame (21).

10. The feeding device for hot-recycling drum of asphalt mixture according to claim 1, characterized in that, The discharging port (13) is provided with a door body (5). The door body (5) comprises a plurality of blades (51) hinged to each other. The uppermost blade (51) is hinged to the top of the discharging port (13).

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