Asphalt mixture recycling processing device

Abstract

The application discloses an asphalt mixture recycling processing device, which comprises a mixing box, a stirring device and a dispersing part. The top of the mixing box is provided with an inlet, and the lower part is provided with an outlet. The top of the stirring rod of the stirring device is provided with a plurality of scattering rods, and the plurality of scattering rods are opposite to the inlet. The dispersing part comprises a dispersing cylinder and a plurality of guide plates. The stirring rod penetrates through the bottom of the dispersing cylinder, the plurality of scattering rods are located in the upper part of the dispersing cylinder, the inlet is opposite to the inside of the dispersing cylinder, a plurality of openings are arranged on the side wall of the lower part of the dispersing cylinder along the circumferential direction of the lower part of the dispersing cylinder, the plurality of guide plates are arranged on the outer side wall of the lower part of the dispersing cylinder along the circumferential direction of the lower part of the dispersing cylinder, one opening corresponds to one guide plate, each guide plate is arranged below the corresponding opening, and the lengths of at least two guide plates in the plurality of guide plates are different. The material is scattered and dispersed before stirring, so that the stirring is more uniform, and the stirring time is shortened.

Description

Technical Field

[0001] This invention relates to the field of asphalt production technology. More specifically, this invention relates to an apparatus for the recycling and processing of asphalt mixtures. Background Technology

[0002] Hot recycling of asphalt mixtures involves milling, excavating, and crushing damaged old asphalt pavements to form old asphalt mixtures, then heating and recycling them, and finally mixing them with new asphalt, aggregates, and other materials according to a certain mix ratio to form new asphalt mixtures.

[0003] Existing asphalt mixture recycling processing equipment, such as the plant-mixed hot recycled asphalt mixture mixing device authorized by announcement number CN 216040495 U, directly feeds the material into the mixing tank through the feed inlet without breaking up and dispersing the material before mixing. This will result in uneven mixing and increase the mixing time. Summary of the Invention

[0004] The purpose of this invention is to provide an asphalt mixture recycling processing device that breaks down and disperses the material before mixing, which makes the mixing more uniform and shortens the mixing time.

[0005] To achieve these objectives and other advantages of the present invention, an asphalt mixture recycling processing apparatus is provided, comprising:

[0006] The mixing tank has a feed inlet at the top, heat-conducting pipes on the side walls, and a discharge outlet at the bottom.

[0007] The mixing device has a vertically arranged mixing rod. The top of the mixing rod is a certain distance away from the top of the mixing box, and the bottom passes through the bottom of the mixing box and extends to the outside of the mixing box and is connected to the driving device. The other part of the mixing rod is located inside the mixing box. Multiple dispersing rods are arranged at intervals along the circumferential direction on the top of the mixing rod. The multiple dispersing rods are opposite to the feed inlet and are spaced a certain distance apart.

[0008] The dispersing component includes a dispersing cylinder and multiple guide plates. The stirring blades of the agitator are located below the dispersing component. The dispersing cylinder is hollow inside and open at the top. The cross-section of the dispersing cylinder is circular at all points. The cross-sectional dimensions of the upper part of the dispersing cylinder gradually decrease from top to bottom, while the dimensions of the lower part remain unchanged. The stirring rod passes through the bottom of the dispersing cylinder and is spaced a certain distance from the inner wall of the dispersing cylinder. The multiple dispersing rods are located in the upper part of the dispersing cylinder and are also spaced a certain distance from the upper sidewall of the dispersing cylinder. The feed inlet is located at the dispersing... Inside the cylinder, the lower sidewall of the dispersing cylinder has multiple openings spaced apart along its circumferential direction. Multiple guide plates are spaced apart along the lower circumferential direction of the dispersing cylinder on the lower outer sidewall of the dispersing cylinder, with one opening corresponding to one guide plate. Each guide plate is located below its corresponding opening. At least two of the multiple guide plates have different lengths. Each guide plate is inclined downward along its length, and the end connected to the dispersing cylinder is positioned higher. Each guide plate is spaced a certain distance from the inner sidewall of the mixing box.

[0009] Preferably, in the asphalt mixture recycling processing device, the top of the dispersing component is close to the top of the mixing tank.

[0010] Preferably, in the asphalt mixture recycling processing device, the opening is arc-shaped, and its center is located on the axis of the dispersing cylinder.

[0011] Preferably, in the asphalt mixture recycling processing device, a baffle is provided on each side of the guide plate along its width direction.

[0012] Preferably, the asphalt mixture recycling processing device further includes:

[0013] A dispersing plate is disposed in the upper part of the dispersing cylinder and below the multiple dispersing rods, and is spaced a certain distance from the upper side wall of the dispersing cylinder. The stirring rod passes through the dispersing plate and is fixedly connected to the dispersing plate. The feed inlet and the vertical projection of the lower part of the dispersing cylinder are both located within the vertical projection of the dispersing plate. The dispersing plate is coaxially arranged with the dispersing cylinder and the stirring rods.

[0014] Preferably, in the asphalt mixture recycling processing device, the dispersing plate is conical.

[0015] Preferably, in the asphalt mixture recycling processing device, the mixing box is cylindrical and coaxially arranged with the mixing rod, and the feed inlet is located at the center of the top of the mixing box;

[0016] The asphalt mixture recycling and processing device also includes:

[0017] The driving gear is sleeved and fixed on the lower side wall of the dispersion cylinder and located above the plurality of openings. Only a portion of the outer side wall of the driving gear is provided with teeth.

[0018] The driven gear has a ring of teeth along its circumference, and the teeth on the driven gear can mesh with the teeth on the driving gear;

[0019] A rotating shaft is rotatably connected to a driven gear, and the top of the rotating shaft is fixed to the top of the mixing box;

[0020] The gear disk contains both the driving gear and the driven gear. A ring of teeth is arranged around the circumference of the gear disk, and the teeth on the gear disk mesh with the teeth on the driven gear.

[0021] At least one scraper is vertically arranged, with its top fixedly connected to the outer wall of the gear disk. The cross-section of each scraper is arc-shaped, and the center of the arc is located on the axis of the stirring rod. Each scraper is in contact with the inner wall of the mixing box.

[0022] Preferably, the asphalt mixture recycling processing device includes one scraper.

[0023] Preferably, in the asphalt mixture recycling processing device, only one-tenth of the outer wall of the drive gear is provided with teeth.

[0024] Preferably, in the asphalt mixture recycling processing device, the bottom of the dispersion cylinder gradually slopes downward from its center towards its edge.

[0025] The present invention has at least the following beneficial effects:

[0026] This invention uses a drive device to rotate the stirring rod, which in turn causes the dispersing rod, dispersing component, and scraper to rotate synchronously, significantly reducing operating costs. The rotating dispersing rod disperses the material entering the mixing tank, promoting uniform mixing. The rotating dispersing component causes the dispersed material to be thrown out through various openings and fall into the mixing tank along the guide plates. Because at least two of the guide plates are of different lengths, the material entering the dispersing cylinder falls continuously in multiple circles during the rotation of the guide plates, further dispersing the material and improving mixing efficiency while shortening mixing time. The rotating scraper removes material adhering to the inner wall of the mixing tank.

[0027] This invention, by setting up a driving gear, a driven gear, and a gear disk, and by making only a portion of the outer wall of the driving gear have teeth, enables the scraper to intermittently scrape off the material adhering to the inner wall of the mixing box, avoiding continuous rotation of the scraper and thus reducing the workload of the drive device, and also reducing the damage to the inner wall of the mixing box and the scraper caused by friction.

[0028] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of an asphalt mixture recycling processing apparatus according to an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of the driving gear, driven gear, gear disk and scraper according to an embodiment of the present invention. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0032] It should be noted that in the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] like Figure 1 As shown, the present invention provides an asphalt mixture recycling processing apparatus, comprising:

[0034] The mixing tank 1 has a feed inlet at the top, a heat-conducting pipe on the side wall, and a discharge outlet at the bottom. The side wall of the mixing tank 1 has an installation groove, in which the heat-conducting pipe is installed. A protective plate is installed at the opening of the installation groove to protect the heat-conducting pipe.

[0035] The mixing device has a vertically arranged mixing rod 2. The top of the mixing rod 2 is a certain distance away from the top of the mixing box 1, and the bottom passes through the bottom of the mixing box 1 and extends to the outside of the mixing box 1 and is connected to the driving device. The other part of the mixing rod 2 is located inside the mixing box 1. Multiple dispersing rods 5 are arranged at intervals along the circumferential direction on the top of the mixing rod 2. The multiple dispersing rods 5 are opposite to the feed inlet and are spaced a certain distance apart, so that the material entering the mixing box 1 through the feed inlet is dispersed by the dispersing rods 5 during the falling process.

[0036] The dispersing component 3 includes a dispersing cylinder 31 and multiple guide plates 32. The stirring blades of the stirring device are located below the dispersing component 3. The dispersing cylinder 31 is hollow inside and open at the top. The cross-section of the dispersing cylinder 31 is circular at all points. The size of the cross-section of the upper part of the dispersing cylinder 31 gradually decreases from top to bottom, while the size of the cross-section of the lower part remains unchanged. That is, the upper part of the dispersing cylinder 31 is an inverted frustum shape, and the lower part is cylindrical. The stirring rod 2 passes through the bottom of the dispersing cylinder 31 and is spaced a certain distance from the inner side wall of the dispersing cylinder 31. The multiple dispersing rods 5 are all located inside the upper part of the dispersing cylinder 31 and are spaced a certain distance from the upper side wall of the dispersing cylinder 31, so that the material that flies out after being dispersed can fall to the upper part of the dispersing cylinder 31 and fall down along the side wall of the dispersing cylinder 31. The feed inlet is opposite to the interior of the dispersion cylinder 31. Multiple openings 311 are spaced apart along the circumferential direction on the lower side wall of the dispersion cylinder 31. Multiple guide plates 32 are spaced apart along the circumferential direction on the lower outer side wall of the dispersion cylinder 31. One opening 311 corresponds to one guide plate 32. Each guide plate 32 is located below its corresponding opening 311. At least two of the multiple guide plates 32 have different lengths. Each guide plate 32 is inclined downward along its length, and the end connected to the dispersion cylinder 31 is positioned higher. Each guide plate 32 is spaced a certain distance from the inner side wall of the mixing box 1 so that the inner side wall of the mixing box 1 does not affect the material falling downward on the guide plate 32.

[0037] The asphalt mixture recycling processing device provided in this solution introduces material into the mixing tank 1 through the feed inlet. Simultaneously, the driving device rotates the mixing rod 2, causing the dispersing rod 5 and the dispersing component 3 to rotate synchronously. When the dispersing rod 5 rotates, it disperses the material entering the mixing tank 1, promoting uniform mixing. The dispersed material falls onto the upper part of the dispersing cylinder 31 and down its side wall. The rotation of the dispersing component 3 causes the dispersed material to be thrown out through the openings 311 and fall into the mixing tank 1 along the guide plates 32. Because at least two of the guide plates 32 have different lengths, the material entering the dispersing cylinder 31 falls continuously in multiple circles during the rotation of the guide plates 32, thus dispersing the material. This improves mixing efficiency and shortens mixing time.

[0038] In another embodiment, in the asphalt mixture recycling processing device, the top of the dispersing component 3 is close to the top of the mixing box 1, so that all the material that flies out after being dispersed falls to the upper part of the dispersing cylinder 31 and falls down along the side wall of the dispersing cylinder 31.

[0039] In another embodiment, in the asphalt mixture recycling processing device, the opening 311 is arc-shaped, and its center is located on the axis of the dispersing cylinder 31.

[0040] In another embodiment, in the asphalt mixture recycling processing device, a baffle is provided on each side of the guide plate 32 along its width direction, so that the material falling along the guide plate 32 falls between the two baffles.

[0041] In another embodiment, the asphalt mixture recycling processing apparatus further includes:

[0042] A dispersing plate 4 is disposed in the upper part of the dispersing cylinder 31, below the multiple dispersing rods, and at a certain distance from the upper side wall of the dispersing cylinder 31. The stirring rod 2 passes through the dispersing plate 4 and is fixedly connected to the dispersing plate 4. The feed inlet and the vertical projection of the lower part of the dispersing cylinder 31 are both located within the vertical projection of the dispersing plate 4. The dispersing plate 4 is coaxially arranged with the dispersing cylinder 31 and the stirring rod 2. By setting the dispersing plate 4, the material falling onto the dispersing plate 4 can be dispersed, and then this part of the material falls back to the upper part of the dispersing cylinder 31 for further dispersion.

[0043] In another embodiment, the dispersing plate 4 in the asphalt mixture recycling processing device is conical.

[0044] In another embodiment, in the asphalt mixture recycling processing device, the mixing box 1 is cylindrical and coaxially arranged with the mixing rod 2, and the feed inlet is located at the center of the top of the mixing box 1;

[0045] like Figure 2 As shown, the asphalt mixture recycling processing device further includes:

[0046] The drive gear 6 is sleeved and fixed on the lower side wall of the dispersion cylinder 31 and located above the plurality of openings 311. Only a portion of the outer side wall of the drive gear 6 is provided with teeth.

[0047] Driven gear 7 has a ring of teeth arranged along its circumferential direction, and the teeth on driven gear 7 can mesh with the teeth on driving gear 6;

[0048] A rotating shaft 8 is rotatably connected to a driven gear 7, and the top of the rotating shaft 8 is fixed to the top of the mixing box 1;

[0049] Gear disk 9, the driving gear 6 and the driven gear 7 are both located inside the gear disk 9, and a ring of teeth is arranged inside the gear disk 9 along its circumferential direction, and the teeth on the gear disk 9 mesh with the teeth on the driven gear 7;

[0050] At least one scraper 10 is vertically arranged, and the top of the scraper 10 is fixedly connected to the outer wall of the gear disk 9. The cross-section of each scraper 10 is arc-shaped, and the center of the arc is located on the axis of the stirring rod 2. Each scraper 10 is in contact with the inner wall of the mixing box 1.

[0051] The stirring rod 2 drives the dispersing cylinder 31 to rotate, and the dispersing cylinder 31 drives the driving gear 6 to rotate. When the teeth on the driving gear 6 rotate to mesh with the teeth on the driven gear 7, the driven gear 7 rotates, and at the same time, the gear disk 9 meshing with it rotates. Since the scraper 10 is fixed on the gear disk 9, the scraper 10 can also rotate. When the driving gear 6 continues to rotate, its teeth separate from the teeth on the driven gear 7, the driven gear 7 stops rotating, and consequently the gear disk 9 and the scraper 10 also stop rotating.

[0052] By setting up a drive gear 6, a driven gear 7, and a gear disk 9, and ensuring that only a portion of the outer wall of the drive gear 6 has teeth, the scraper 10 can intermittently scrape off the material adhering to the inner wall of the mixing box 1, avoiding continuous rotation of the scraper 10 and increasing the workload of the drive device, and also reducing the damage to the inner wall of the mixing box 1 and the scraper 10 caused by friction.

[0053] In another embodiment, the scraper 10 in the asphalt mixture recycling processing device is one piece.

[0054] In another embodiment, in the asphalt mixture recycling processing device, only one-tenth of the outer wall of the drive gear 6 is provided with teeth.

[0055] In another embodiment, in the asphalt mixture recycling processing device, the bottom of the dispersion cylinder 31 gradually slopes downward from its center to its edge, so that the material falling to the bottom of the dispersion cylinder 31 can quickly fall through the opening 311.

[0056] In another embodiment, in the asphalt mixture recycling processing device, a screw conveyor 11 is installed at the top of the mixing tank 1. The side wall of the screw conveyor 11 has an inlet for crushed old asphalt material and an inlet for new asphalt material and recycling agent. The outlet of the screw conveyor 11 is connected to the inlet. The old asphalt material, new asphalt material, and recycling agent are conveyed and initially mixed via the screw conveyor 11, then dispersed and broken up in the mixing tank 1, and finally mixed by a stirring device.

[0057] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An asphalt mixture recycling processing device, characterized in that, include: The mixing tank has a feed inlet at the top, heat-conducting pipes on the side walls, and a discharge outlet at the bottom. The mixing device has a vertically arranged mixing rod. The top of the mixing rod is a certain distance away from the top of the mixing box, and the bottom passes through the bottom of the mixing box and extends to the outside of the mixing box and is connected to the driving device. The other part of the mixing rod is located inside the mixing box. Multiple dispersing rods are arranged at intervals along the circumferential direction on the top of the mixing rod. The multiple dispersing rods are opposite to the feed inlet and are spaced a certain distance apart. The dispersing component includes a dispersing cylinder and multiple guide plates. The stirring blades of the agitator are located below the dispersing component. The dispersing cylinder is hollow inside and open at the top. The cross-section of the dispersing cylinder is circular at all points. The cross-sectional dimensions of the upper part of the dispersing cylinder gradually decrease from top to bottom, while the dimensions of the lower part remain unchanged. The stirring rod passes through the bottom of the dispersing cylinder and is spaced a certain distance from the inner wall of the dispersing cylinder. The multiple dispersing rods are located in the upper part of the dispersing cylinder and are also spaced a certain distance from the upper sidewall of the dispersing cylinder. The feed inlet is located at the dispersing... Inside the cylinder, the lower sidewall of the dispersing cylinder has multiple openings spaced apart along its circumferential direction. Multiple guide plates are spaced apart along the lower circumferential direction of the dispersing cylinder on the lower outer sidewall of the dispersing cylinder, with one opening corresponding to one guide plate. Each guide plate is located below its corresponding opening. At least two of the multiple guide plates have different lengths. Each guide plate is inclined downward along its length, and the end connected to the dispersing cylinder is positioned higher. Each guide plate is spaced a certain distance from the inner sidewall of the mixing box.

2. The asphalt mixture recycling processing apparatus as described in claim 1, characterized in that, The top of the dispersant is close to the top of the mixing tank.

3. The asphalt mixture recycling processing apparatus as described in claim 1, characterized in that, The opening is arc-shaped, and its center is located on the axis of the dispersion cylinder.

4. The asphalt mixture recycling processing apparatus as described in claim 1, characterized in that, The guide plate has a baffle on each side along its width.

5. The asphalt mixture recycling processing apparatus as described in claim 1, characterized in that, Also includes: A dispersing plate is disposed in the upper part of the dispersing cylinder and below the multiple dispersing rods, and is spaced a certain distance from the upper side wall of the dispersing cylinder. The stirring rod passes through the dispersing plate and is fixedly connected to the dispersing plate. The feed inlet and the vertical projection of the lower part of the dispersing cylinder are both located within the vertical projection of the dispersing plate. The dispersing plate is coaxially arranged with the dispersing cylinder and the stirring rods.

6. The asphalt mixture recycling processing apparatus as described in claim 5, characterized in that, The dispersion plate is conical.

7. The asphalt mixture recycling processing apparatus as described in claim 6, characterized in that, The mixing box is cylindrical and coaxially arranged with the stirring rod, and the feed inlet is located at the center of the top of the mixing box; The asphalt mixture recycling and processing device also includes: The driving gear is sleeved and fixed on the lower side wall of the dispersion cylinder and located above the plurality of openings. Only a portion of the outer side wall of the driving gear is provided with teeth. The driven gear has a ring of teeth along its circumference, and the teeth on the driven gear can mesh with the teeth on the driving gear; A rotating shaft is rotatably connected to a driven gear, and the top of the rotating shaft is fixed to the top of the mixing box; The gear disk contains both the driving gear and the driven gear. A ring of teeth is arranged around the circumference of the gear disk, and the teeth on the gear disk mesh with the teeth on the driven gear. At least one scraper is vertically arranged, with its top fixedly connected to the outer wall of the gear disk. The cross-section of each scraper is arc-shaped, and the center of the arc is located on the axis of the stirring rod. Each scraper is in contact with the inner wall of the mixing box.

8. The asphalt mixture recycling and processing apparatus as described in claim 7, characterized in that, There is one scraper.

9. The asphalt mixture recycling and processing apparatus as described in claim 7, characterized in that, Only one-tenth of the outer wall of the drive gear has teeth.

10. The asphalt mixture recycling processing apparatus as described in claim 1, characterized in that, The bottom of the dispersion cylinder gradually slopes downward from its center towards its edge.

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