A drying and heating device for recycled asphalt concrete

Abstract

This utility model relates to the field of asphalt concrete processing technology and discloses a drying and heating device for recycled asphalt concrete. It includes a drying tank and several heating rods evenly distributed within the drying tank. A feed hopper is located on one side of the drying tank, and extends through it on the other side. A drying cylinder is located inside the drying tank, with several through holes evenly distributed around its circumference. The bottom end of the feed hopper extends into the drying cylinder. A rotating assembly that can drive the drying cylinder to rotate is located on the side of the drying tank near the feed hopper. Several fixed lifting plates are arranged inclined in the same direction on both sides of the drying cylinder. A movable lifting plate is hinged to the middle of the drying cylinder. An angle adjustment assembly that can drive the movable lifting plate to change its inclination angle is provided on the drying cylinder. The advantages of this utility model compared to the prior art are: easier adjustment of the movable lifting plate angle, easier extension of the mixing path, and easier improvement of drying uniformity and complete drying.

Description

Technical Field

[0001] This utility model relates to the field of asphalt concrete processing technology, specifically to a drying and heating device for recycled asphalt concrete. Background Technology

[0002] The production process of asphalt concrete includes crushing, screening, and drying of aggregates, followed by mixing sand, aggregates, and asphalt according to a specific mix proportion, and then conducting quality inspection. Additives can also be added during the mixture production process to improve the performance of the concrete.

[0003] Existing recycled asphalt concrete drying and heating equipment mainly improves the uniformity of drying by driving the drying drum to rotate and thus driving the aggregate to rotate. However, since the existing lifting plates are mostly fixed and inclined, although the aggregate can be transported, the mixing path length remains unchanged. This means that some aggregate may not be completely dried when it is discharged, and it needs to be returned to the feeding hopper for re-drying. Utility Model Content

[0004] The technical problem this invention aims to solve is that with a fixed lifting plate and an unchanged mixing path length, incomplete drying may occur, reducing drying efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a recycled asphalt concrete drying and heating device, including a drying tank and a plurality of heating tubes evenly distributed inside the drying tank. A feeding hopper is provided on one side of the drying tank and is provided through the other side. A drying cylinder is provided inside the drying tank. A plurality of through holes are evenly distributed around the circumference of the drying cylinder. The bottom end of the feeding hopper extends into the drying cylinder. A rotating component that can drive the drying cylinder to rotate is provided on the side of the drying tank near the feeding hopper. A plurality of fixed lifting plates that are inclined in the same direction are provided on both sides of the drying cylinder. A movable lifting plate is hinged in the middle of the drying cylinder. An angle adjustment component that can drive the movable lifting plate to change the tilt angle is provided on the drying cylinder.

[0006] Furthermore, a first fixed ring plate is provided on both sides of the drying cylinder, and a number of guide rollers are evenly distributed and rotated at the bottom of the drying tank. The guide rollers are provided with ring grooves that cooperate with the first fixed ring plate.

[0007] Furthermore, the rotating assembly includes a motor located on the side of the drying tank near the feed hopper. The power output end of the motor rotates through the drying tank and has a gear at its end. The end of the drying cylinder has a gear ring that meshes with the gear.

[0008] Furthermore, the angle adjustment assembly includes a first sliding hole on the drying cylinder, a movable lifting plate hinged to the drying cylinder at one end, a second sliding hole on the movable lifting plate, a sliding column slidingly passing through the first and second sliding holes, a limiting plate at one end of the sliding column, a spring sleeved on the sliding column between the limiting plate and the movable lifting plate, and a hinge rod hinged to the other end of the sliding column. A second fixed ring plate is provided on the outer wall of the drying cylinder, and telescopic cylinders are evenly distributed around the second fixed ring plate. The power end of the telescopic cylinder is hinged to the end sliding column.

[0009] Furthermore, the movable lifting plate has an L-shaped structure, and the second sliding hole is located on the side of the movable lifting plate that abuts against the drying cylinder and is arranged along the axial direction of the movable lifting plate.

[0010] Furthermore, a fixing plate is provided on the top of the drying tank on the side away from the feed hopper, and a discharge baffle is hinged to the bottom end of the fixing plate.

[0011] The advantages of this utility model compared with the prior art are as follows:

[0012] 1. Heat is generated by heating tubes, and then the aggregate is fed into the drying cylinder through the feed hopper. The drying cylinder is driven by the rotating component to rotate the aggregate. The inclined fixed lifting plates can guide the aggregate from one side of the feed hopper of the drying tank to the other side, which facilitates drying and aggregate transportation at the same time.

[0013] 2. The angle adjustment component allows for easy adjustment of the angle of the movable lifting plate, facilitating reverse mixing of aggregates in the middle of the drying drum, extending the drying path of the aggregates in the drying drum, and improving drying efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a recycled asphalt concrete drying and heating device according to the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of a recycled asphalt concrete drying and heating device according to the present invention.

[0016] Figure 3 This is a half-section structural diagram of a recycled asphalt concrete drying and heating device according to the present invention.

[0017] Figure 4 yes Figure 3 A magnified structural diagram of A in the diagram.

[0018] Figure 5 This is a schematic diagram of the drying cylinder in a recycled asphalt concrete drying and heating equipment according to this utility model.

[0019] Figure 6 yes Figure 5 A schematic diagram of the main cross-section.

[0020] Figure 7 yes Figure 6 A magnified structural diagram of B in the diagram.

[0021] As shown in the figure: 1. Drying tank, 2. Heating tube, 3. Feed hopper, 4. Drying cylinder, 5. Through hole, 6. Rotating assembly, 7. Fixed lifting plate, 8. Movable lifting plate, 9. Angle adjustment assembly, 10. First fixed ring plate, 11. Guide roller, 12. Ring groove, 13. Motor, 14. Gear, 15. Gear ring, 16. First sliding hole, 17. Second sliding hole, 18. Sliding column, 19. Limiting plate, 20. Spring, 21. Hinge rod, 22. Second fixed ring plate, 23. Telescopic cylinder, 24. Fixed plate, 25. Discharge baffle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Combined with appendix Figure 1 A drying and heating device for recycled asphalt concrete includes a drying tank 1 and several heating tubes 2 evenly distributed inside the drying tank 1. A feeding hopper 3 is provided on one side of the drying tank 1 and is installed through the other side. A fixing plate 24 is provided on the top of the side of the drying tank 1 away from the feeding hopper 3, and a discharge baffle 25 is hinged to the bottom end of the fixing plate 24.

[0024] The heating tube 2 facilitates the generation of heat, which is convenient for drying the aggregate in the drying tank 1. The aggregate is fed into the drying tank 1 from the feed hopper 3 on one side and discharged from the discharge baffle 25 at the other end, which can reduce energy waste in the drying tank 1.

[0025] Combined with appendix Figure 2 and attached Figure 3 The drying tank 1 is provided with a drying cylinder 4. The drying cylinder 4 is evenly arranged with several through holes 5. The bottom end of the feed hopper 3 extends into the drying cylinder 4. The drying cylinder 4 is provided with first fixed ring plates 10 on both sides. The bottom of the drying tank 1 is evenly arranged with several guide rollers 11. The guide rollers 11 are provided with ring grooves 12 that cooperate with the first fixed ring plates 10.

[0026] Combined with appendix Figure 1 Appendix Figure 4 and attached Figure 5The drying tank 1 is provided with a rotating assembly 6 on the side near the feed hopper 3, which can drive the drying cylinder 4 to rotate. The rotating assembly 6 includes a motor 13 located on the side of the drying tank 1 near the feed hopper 3. The power output end of the motor 13 rotates through the drying tank 1 and is provided with a gear 14 at the end. The end of the drying cylinder 4 is provided with a gear ring 15 that meshes with the gear 14.

[0027] The drying cylinder 4 is coaxially arranged with the drying tank 1. The rotating assembly 6 can drive the drying cylinder 4 to rotate. The starting motor 13 drives the drying cylinder 4 to rotate through the meshing of the gear 14 and the gear ring 15. The annular groove 12 on the first fixed ring plate 10 and the guide roller 11 cooperates to facilitate the stability of the rotation of the drying cylinder 4 and facilitate the uniform contact between the heat in the heating tube 2 and the aggregate in the drying cylinder 4. A fan can also be installed in the drying tank 1 to improve the uniformity of the hot air distribution in the drying tank 1.

[0028] Combined with appendix Figure 6 and attached Figure 7 The drying cylinder 4 has several fixed lifting plates 7 that are inclined in the same direction on both sides. A movable lifting plate 8 is hinged in the middle of the drying cylinder 4. The movable lifting plate 8 has an L-shaped structure. A second sliding hole 17 is provided on the side of the movable lifting plate 8 that abuts against the drying cylinder 4 and is arranged along the axial direction of the movable lifting plate 8. The drying cylinder 4 is provided with an angle adjustment component 9 that can drive the movable lifting plate 8 to change its tilt angle. The angle adjustment component 9 includes a first sliding hole 16 provided on the drying cylinder 4. One end of the movable lifting plate 8 is hinged to the drying cylinder 4. The movable lifting plate 8 is provided with a second sliding hole 17. A sliding column 18 is slidably passed through the first sliding hole 16 and the second sliding hole 17. A limiting plate 19 is provided at one end of the sliding column 18. A spring 20 is provided on the sliding column 18 between the limiting plate 19 and the movable lifting plate 8. A hinge rod 21 is hinged at the other end. A second fixed ring plate 22 is provided on the outer wall of the drying cylinder 4. Telescopic cylinders 23 are evenly distributed around the second fixed ring plate 22. The power end of the telescopic cylinder 23 is hinged to the end sliding column 18.

[0029] The fixed lifting plate 7 facilitates the guidance of aggregates inside the drying cylinder 4 when driving the drying cylinder 4 to rotate.

[0030] By activating the telescopic cylinder 23, the telescopic cylinder 23 drives the end slide column 18. The slide column 18, through its cooperation with the second slide hole 17, drives the end movable lifting plate 8 to rotate around the hinge point with the drying cylinder 4. The first slide hole 16 is collinear with the telescopic cylinder 23 to avoid interference with the telescopic cylinder 23. The slide column 18 drives the other slide columns 18 on the same side through the hinge rod. The other slide columns 18, through their cooperation with the first slide hole 16 and the second slide hole 17, drive the other movable lifting plates 8 on the same side to rotate synchronously around the hinge point with the drying cylinder 4, thereby realizing the synchronous angle adjustment of the other movable lifting plates 8.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0033] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A drying and heating device for recycled asphalt concrete, comprising a drying tank (1) and a plurality of heating pipes (2) evenly distributed within the drying tank (1), wherein a feed hopper (3) is provided on one side of the drying tank (1) and is provided through the other side, characterized in that: The drying tank (1) is provided with a drying cylinder (4). The drying cylinder (4) has several through holes (5) evenly distributed around its circumference. The bottom end of the feed hopper (3) extends into the drying cylinder (4). The drying tank (1) is provided with a rotating component (6) that can drive the drying cylinder (4) to rotate on the side near the feed hopper (3). Several fixed lifting plates (7) are provided on both sides of the drying cylinder (4) and are inclined in the same direction. A movable lifting plate (8) is hinged in the middle of the drying cylinder (4). An angle adjustment component (9) that can drive the movable lifting plate (8) to change the tilt angle is provided on the drying cylinder (4).

2. A regenerative asphalt concrete drying heating apparatus as claimed in claim 1, wherein: The drying cylinder (4) is provided with a first fixed ring plate (10) on both sides, and a number of guide rollers (11) are evenly distributed and rotated at the bottom of the drying tank (1). The guide rollers (11) are provided with ring grooves (12) that cooperate with the first fixed ring plate (10).

3. A regenerative asphalt concrete drying heating apparatus as defined in claim 1 wherein: The rotating assembly (6) includes a motor (13) located on the side of the drying tank (1) near the feed hopper (3). The power output end of the motor (13) rotates through the drying tank (1) and is provided with a gear (14) at the end. The end of the drying cylinder (4) is provided with a gear ring (15) that meshes with the gear (14).

4. A regenerative asphalt concrete drying heating apparatus as defined in claim 1, wherein: The angle adjustment assembly (9) includes a first sliding hole (16) on the drying cylinder (4), a movable lifting plate (8) is hinged to the drying cylinder (4) at one end, a second sliding hole (17) is provided on the movable lifting plate (8), a sliding column (18) is slidably provided in the first sliding hole (16) and the second sliding hole (17), a limiting plate (19) is provided at one end of the sliding column (18), a spring (20) is provided on the outer sleeve of the sliding column (18) between the limiting plate (19) and the movable lifting plate (8), and a hinge rod (21) is hinged to the other end. A second fixing ring plate (22) is provided on the outer wall of the drying cylinder (4), and telescopic cylinders (23) are evenly distributed around the second fixing ring plate (22). The power end of the telescopic cylinder (23) is hinged to the end sliding column (18).

5. A regenerative asphalt concrete drying heating apparatus as defined in claim 4, wherein: The movable lifting plate (8) has an L-shaped structure, and the second sliding hole (17) is located on the side of the movable lifting plate (8) that abuts against the drying cylinder (4) and is arranged along the axial direction of the movable lifting plate (8).

6. A regenerative asphalt concrete drying heating apparatus as defined in claim 1 wherein: The drying tank (1) has a fixed plate (24) on the top of the side away from the feed hopper (3), and a discharge baffle (25) is hinged to the bottom of the fixed plate (24).

Images